Technical Information

Series 90
Axial Piston Pumps

www.danfoss.com

Technical Information
Series 90 Axial Piston Pumps

Revision history

2 | © Danfoss | December 2022

Table of revisions
Date

ChangedRev

December 2022

corrections to solenoid data - page 39

0911

March 2022

Additional note onto Mating pump requirements at Features and Options

0910

September 2021

Modified KN at control option "M" on MMC

0909

June 2021

Deleted Size 042 information.

0908

March 2020

Removed restricted options

0907

February 2020

Changed document number from BC00000015 and increased version by 0101

0906

January 2020

Corrected 075 dimension drawing

0805

March 2016

Minor edit

0804

January 2015

correction to O-ring sizing - page 77

HC

May 2014

corrections to pin assignments - page 48

HB

February 2014

Danfoss Layout

HA

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Contents
General Description
Series 90 Family of Pumps and Motors.....................................................................................................................................5
PLUS+1 Compliant Controls and Sensors................................................................................................................................5
Design...................................................................................................................................................................................................6
Series 90 Pictorial Circuit Diagram............................................................................................................................................. 7
System schematic.............................................................................................................................................................................7
Technical Specifications
General Specifications.................................................................................................................................................................... 8
Features and Options......................................................................................................................................................................8
Operating Parameters.....................................................................................................................................................................9
Fluid Specification............................................................................................................................................................................9
Operating Parameters
Input Speed......................................................................................................................................................................................10
Independent Braking System...............................................................................................................................................10
System Pressure..............................................................................................................................................................................10
Servo Pressure.................................................................................................................................................................................12
Charge Pressure..............................................................................................................................................................................12
Charge Pump Inlet Pressure.......................................................................................................................................................12
Case Pressure...................................................................................................................................................................................12
External Shaft Seal Pressure....................................................................................................................................................... 13
Temperature.................................................................................................................................................................................... 13
Viscosity.............................................................................................................................................................................................13
System Design Parameters
Filtration System.............................................................................................................................................................................14
Filtration Options........................................................................................................................................................................... 14
Suction filtration – Option S................................................................................................................................................. 14
Charge pressure filtration (partial charge pump flow)............................................................................................... 15
Remote charge pressure filtration......................................................................................................................................15
Fluid Selection.................................................................................................................................................................................15
Reservoir............................................................................................................................................................................................15
Case Drain.........................................................................................................................................................................................16
Pump Life.......................................................................................................................................................................................... 16
Charge Pump...................................................................................................................................................................................16
Charge pump sizing/selection.............................................................................................................................................16
Bearing Loads and Life.................................................................................................................................................................17
Applications with external shaft loads..............................................................................................................................17
Understanding and Minimizing System Noise....................................................................................................................18
Sizing Equations............................................................................................................................................................................. 18
Mounting Flange Loads...............................................................................................................................................................19
Master Model Code
Series 90 Master Model Code Breakdown............................................................................................................................ 21
S90 Rotation and Size Options..................................................................................................................................................21
Control Options.............................................................................................................................................................................. 22
Pressure, Aux Mounting, Ports, Filtration, Displacement Limitation Options......................................................... 23
Shaft and Charging System........................................................................................................................................................24
Control Orifice Options................................................................................................................................................................ 25
Special Hardware and Pressure Settings............................................................................................................................... 26
Control Features
3-Position (FNR) Electric Control - DC, DD............................................................................................................................ 27
Response time........................................................................................................................................................................... 28
Electric Displacement Control (EDC), Options KA, KP, KT................................................................................................28
Features and Benefits..............................................................................................................................................................28
Response time........................................................................................................................................................................... 31
Pump output flow direction vs. control current............................................................................................................31
Manual Over Ride (MOR)............................................................................................................................................................. 32
Hydraulic Displacement Control (HDC), Option HF, HS................................................................................................... 33© Danfoss | December 2022

BC152886483413en-000911 | 3

Technical Information
Series 90 Axial Piston Pumps
Contents
Operation.....................................................................................................................................................................................33
Features and Benefits..............................................................................................................................................................33
Response time........................................................................................................................................................................... 34
Pump output flow direction vs. control pressure......................................................................................................... 34
Manual Displacement Control (MDC), Options MA, MB.................................................................................................. 35
Features and benefits..............................................................................................................................................................35
External control handle requirements..............................................................................................................................36
Response Time...........................................................................................................................................................................36
Pump output flow direction vs. control handle rotation........................................................................................... 37
Neutral start switch (NSS) for MDC.......................................................................................................................................... 37
Non Feedback Proportional Electric Control (NFPE) ........................................................................................................ 37
Control response.......................................................................................................................................................................37
NFPE control used with a Danfoss microcontroller......................................................................................................38
Input signal requirements..................................................................................................................................................... 38
Features and Options
Multi-Function Valves...................................................................................................................................................................40
Overpressure protection........................................................................................................................................................40
Pressure limiting function..................................................................................................................................................... 40
Bypass Function........................................................................................................................................................................ 41
Auxiliary Mounting Pads............................................................................................................................................................. 41
Mating pump requirements................................................................................................................................................. 41
Displacement Limiter................................................................................................................................................................... 42
Shaft Torque.....................................................................................................................................................................................43
Shaft torque and spline lubrication................................................................................................................................... 43
Shaft torque for tapered shafts............................................................................................................................................43
Shaft Availability and Torque Ratings.....................................................................................................................................44
Tapered Shaft Customer Acknowledgement.................................................................................................................45
Charge Pump...................................................................................................................................................................................45
Charge pump sizing/selection.............................................................................................................................................45
Charge pump flow and power curves...............................................................................................................................46
Speed Sensor................................................................................................................................................................................... 47
Connector Pin Assignments.......................................................................................................................................................49
Installation Drawings
Frame Size 055................................................................................................................................................................................ 50
Frame Size 075................................................................................................................................................................................ 54
Frame Size 075 NFPE Options FK, FL, FM, FN....................................................................................................................... 57
Frame Size 100................................................................................................................................................................................ 62
Frame Size 130................................................................................................................................................................................ 67
Frame Size 180................................................................................................................................................................................ 71
Frame Size 250................................................................................................................................................................................ 75
Cover Plate........................................................................................................................................................................................78
3-Position (F-N-R) Electric Control........................................................................................................................................... 79
Electric Displacement Control (EDC) with MS-Connector or Packard® connector.................................................80
Hydraulic Displacement Control (HDC)................................................................................................................................. 80
Manual Displacement Control (MDC) with neutral start switch................................................................................... 81
Electrohydraulic Displacement Control (NFPE)(except 075 NFPE).............................................................................. 82
Integral Pressure Filter................................................................................................................................................................. 83
Remote pressure – without filter..............................................................................................................................................83

4 | © Danfoss | December 2022

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Technical Information
Series 90 Axial Piston Pumps
General Description
Series 90 Family of Pumps and Motors
Series 90 hydrostatic pumps and motors can be applied together or combined with other products in asystem to transfer and control hydraulic power. They are intended for closed circuit applications.
• Series 90 – advanced technology

•
•
•
•
•

Seven sizes of variable displacement pumps
Proven reliability and performance
Compact, lightweightWorldwide sales and service
PLUS+1™ compliant controls and sensors

Series 90 variable displacement pumps are compact, high power density units. All models utilize theparallel axial piston/slipper concept in conjunction with a tiltable swashplate to vary the pump’s
displacement. Reversing the angle of the swashplate reverses the flow of oil from the pump and thus
reverses the direction of rotation of the motor output.
Series 90 pumps include an integral charge pump to provide system replenishing and cooling oil flow, as
well as control fluid flow. They also feature a range of auxiliary mounting pads to accept auxiliary
hydraulic pumps for use in complementary hydraulic systems. A complete family of control options isavailable to suit a variety of control systems (mechanical, hydraulic, electric).
Series 90 motors also use the parallel axial piston/slipper design in conjunction with a fixed or tiltableswashplate. They can intake/discharge fluid through either port; they are bidirectional. They also include
an optional loop flushing feature that provides additional cooling and cleaning of fluid in the working
loop. For more information on Series 90 motors, refer to Series 90 Motors Technical Information
BC152886483265.
PLUS+1 Compliant Controls and Sensors
A wide range of Series 90 controls and sensors are PLUS+1™ compliant. PLUS+1 compliance means ourcontrols and sensors are directly compatible with the PLUS+1 machine control architecture. Adding
Series 90 pumps to your application using PLUS+1 GUIDE software is as easy as drag-and-drop. Softwaredevelopment that used to take months can now be done in just a few hours. For more information on
PLUS+1 GUIDE, visit www.sauer-danfoss.com/plus1.
Series 90 pumps can be used together in combination with other Danfoss pumps and motors in theoverall hydraulic system. Danfoss hydrostatic products are designed with many different displacement,pressure and load-life capabilities.
Go to the Danfoss website or applicable product catalog to choose the components that are right foryour complete closed circuit hydraulic system.

© Danfoss | December 2022

BC152886483413en-000911 | 5

Technical Information
Series 90 Axial Piston Pumps
General Description
DesignSeries 90 pump cross-section
PistonSlider block

Slipper
Displacement control

Servo arm
Servo piston

Feedback linkage

Cradle bearing
Bushing
Cylinder block

Roller bearing

Valve plate

Shaft
seal

Rear
bushing

Input shaft

Swashplate

Charge pump

Cradle guide

P106 648E

Typical name plate501829Model-No./Ident-No.
Model Code 90L055

KA 1
6 S 3 C6 C
NNN 35 35

Model
Code
Serial-No.

N
03
24

A - 88 - 126 - 67890

Model
NumberSerialNumberMade in USA
P108494E

Place of Manufacture

Series 90 pumps are also manufactured in Europe and China. Place of manufacture shown on nameplate
will correspond with the actual place of manufacture.

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Technical Information
Series 90 Axial Piston Pumps
General Description
Series 90 Pictorial Circuit Diagram
The circuit diagram shows a hydrostatic transmission using a Series 90 axial piston variable displacement
pump and a Series 90 fixed displacement motor.
Control handle

Displacement control valve
Heat exchanger bypass valve
Reservoir

Orificed check
valve

Vacuum gauge
Heat exchanger

Purge relief valve

Charge pressure relief valve
Reversiblevariabledisplacement pump

Servo control cylinder

P102 000

Fixed displacement motor

Multi-function valve

To
pump
case

Servo
pressure
relief valves

Charge pump
Input shaft

Output shaft

Multi-function valve
Pump swashplate

Motor swashplate
Loop flushing valve

Servo control cylinder
Pump

Working loop (high pressure)

Motor
Working loop (low pressur e)Control fluid

Suction line

Case drain fluid

System schematic

M3

A

A

B

B

L2

M3

M1

M1
M4
M5

M

M2
S

© Danfoss | December 2022

L2

L1

M2

P104 286E

BC152886483413en-000911 | 7

Technical Information
Series 90 Axial Piston Pumps
Technical Specifications
General Specifications
DesignAxial piston pump of cradle swashplate design with variable displacement

Direction of rotation

Clockwise, counterclockwise

Pipe connections

Main pressure ports: ISO split flange boss
Remaining ports: SAE straight thread O-ring boss

Recommended installation position

Pump installation position is discretionary, however the recommended control position is on the top
or at the side, with the top position preferred.
Vertical input shaft installation is acceptable.
If input shaft is at the top 1 bar case pressure must be maintained during operation.
The pump housing must be filled with hydraulic fluid under all conditions; including after a long
period of shutdown. Before operating the machine, ensure the pump housing and case drain lines arefree of air.
Recommended mounting for a multiple pump stack is to arrange the highest power flow towards the
input source.
Consult Danfoss for nonconformance to these guidelines.

Auxiliary cavity pressureWill be inlet pressure with internal charge pump. For reference see Operating Parameters. Will be casepressure with external charge supply.
Please verify mating pump shaft seal capability.

Features and Options
Feature

Unit

Frame
055

075

100

130

180

250

Displacement

cm³/rev.
[in³]/rev.

55[3.35]

75[4.59]

100[6.10]

130[7.93]

180[10.98]250[15.25]

Flow at rated speed (theoretical)l/min.
[US gal/min.]

215
[57]

270
[71]

330
[87]

403
[106]

468
[124]

575
[160]

Torque at maximum displacement(theoretical)

N•m/bar[lbf•in/1000
psi]

0.88
[530]

1.19
[730]

1.59
[970]

2.07
[1260]

2.87[1750]

3.97[2433]

Mass moment of inertia of rotating
components

kg•m²[slug•ft²]

0.0060[0.0044]0.0096[0.0071]

0.0150[0.0111]0.023[0.0170]0.0380[0.0280]

0.0650[0.0479]

Weight (with control opt. MA)

kg [lb]40 [88]49 [108]

68 [150]

88 [195]

136 [300]

154 [340]

Flange152-4 (SAE D)

Flange165-4 (SAE E)

31.75[1.25]

31.75[1.25]

38.1[1.5]

1.3125–12

1.625–12

1.625–12

SAE-A, B, C, D

SAE-A, B, C, D, E

Mounting (per ISO 3019-1)

Flange127-4 (SAE C)

Rotation

Right hand or Left hand rotation

Main ports: 4-bolt split-flange(per SAE J518 code 62)

mm
[in]

Main port configuration
Case drain ports (SAE O-ring boss)

25.4
[1.0]

25.4
[1.0]

25.4
[1.0]

Twin or side port
UNF thread(in.)

1.0625–12

1.0625–12

Twin port
1.0625–12

Other ports

SAE O-ring boss

ShaftsSplined, and tapered shafts available

Auxiliary mounting

SAE-A, B, C

8 | © Danfoss | December 2022

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Technical Information
Series 90 Axial Piston Pumps
Technical Specifications
Operating Parameters
Parameter

Unit

Frame
055

075

100

130

180

250

Input speed
Minimum

500

500

500

500

500

500

Rated Speed

min-1(rpm)

3900

3600

3300

3100

2600

2300

Maximum

4250

3950

3650

3400

2850

2500

Operating parameters
System pressure

Charge pressure

Maximum working pressure

450[6525]

Maximum pressure

480[6960]

Maximum low loop

45

[650]

Minimum low loop pressure

10

[145]

18

[261]

34

[493]

14

[203]

Minimum (at corner power for NFPE)

22

[319]

Maximum

40[580]

Minimum

bar

bar

[psi]

[psi]

Maximum
Control pressure

Charge pump inlet
pressure

Case pressure

Minimum (at corner power for EDC and FNR) bar

Ratedbar (absolute)[psi][in Hg vacuum] 0.7

[9]

0.2

[24]

Minimum (cold start)
Maximum

bar

[psi]

4.0

[58]

Rated

bar

[psi]

3.0

[44]

5.0

[73]

0.4

[5.8}

Maximum
Lip seal external pressure Maximum

bar

[psi]

Fluid Specification
Viscosity
Intermittent1)

5 mm2/s [42 SUS]

Minimum

7 mm2/s [49 SUS]

Recommended range

12 – 80 mm2/s [66 – 370 SUS]

Maximum

1600 mm2/s [7500 SUS]

1) Intermittent = Short term t < 1 min per incident and not exceeding 2 % of duty cycle based load-life.

Temperature
Minimum 1)-40°C [-40°F]

Rated

104°C [220°F]

Recommended range2)

60 – 85°C [140 – 185°F]

Maximum Intermittent

115°C [240°F]

1) Cold start = Short term t > 3 min, p ≤ 50 bar [725 psi], n ≤ 1000 min-1 (rpm).
2) At the hottest point, normally case drain port.

© Danfoss | December 2022

BC152886483413en-000911 | 9

Technical Information
Series 90 Axial Piston Pumps
Operating Parameters
Input Speed
Minimum
speed

is the lowest input speed recommended during engine idle condition. Operating below
minimum speed limits the pump’s ability to maintain adequate flow for lubrication andpower transmission.

Rated speed

is the highest input speed recommended at full power condition. Operating at or
below this speed should yield satisfactory product life.
Operating conditions between rated and maximum speed should be restricted to lessthan full power and to limited periods of time.

Maximum
speed

is the highest operating speed permitted. Exceeding maximum speed reduces productlife and can cause loss of hydrostatic power and braking capacity. For most drive
systems, maximum unit speed occurs during downhill braking or negative power
conditions.

W Warning
Never exceed the maximum speed limit under any operating conditions.
During hydraulic braking and downhill conditions, the prime mover must be capable of providing
sufficient braking torque in order to avoid pump over speed. This is especially important to consider forturbo-charged and Tier 4 engines.
For more information please see Pressure and Speed Limits, BC152886484313, when determining speed
limits for a particular application.
Independent Braking System
Unintended vehicle or machine movement hazard. Exceeding maximum speed may cause a loss ofhydrostatic drive line power and braking capacity.
Machine manufacturer is responsible to provide a braking system, redundant to the hydrostatictransmission, sufficient to stop and hold the vehicle or machine in the event of hydrostatic drive power
loss. The braking system must also be sufficient to hold the machine in place when full power is applied.
System Pressure
Hydraulic unit life depends on the speed and normal operating — or weighted average — pressure thatcan only be determined from a duty cycle analysis.
System pressure is the differential pressure between high pressure system ports. It is the dominantoperating variable affecting hydraulic unit life. High system pressure, which resultsfrom high load, reduces expected life.
Applicationpressureis the high pressure relief or pressure limiter setting normally defined within theorder code of the pump. This is the applied system pressure at which the drive line
generates the maximum calculated pull or torque in the application.

Maximumworkingpressureis the highest recommended application pressure and is not intended to be acontinuous pressure. Propel systems with application pressures at, or below thispressure should yield satisfactory unit life given proper component sizing.
Application pressures above maximum working pressure will only be consideredwith duty cycle analysis and factory approval.
Pressure spikes are normal and must be considered when reviewing maximum
working pressure.

10 | © Danfoss | December 2022

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Technical Information
Series 90 Axial Piston Pumps
Operating Parameters© Danfoss | December 2022

Maximumpressureis the highest intermittent pressure allowed under any circumstances. Applications
with applied pressures between rated and maximum require factory approval withcomplete application, duty cycle, and life expectancy analysis.

Minimum low
loop pressuremust be maintained under all operating conditions to avoid cavitation.
All pressure limits are differential pressures referenced to low loop (charge) pressure.
Subtract low loop pressure from gauge readings to compute the differential.

BC152886483413en-000911 | 11

Technical Information
Series 90 Axial Piston Pumps
Operating Parameters
Servo Pressure
Servo pressure is the pressure in the servo system needed to position and hold the pump on stroke. It
depends on system pressure and speed. At minimum servo pressure the pump will run at reduced stroke
depending on speed and pressure.
Minimum servo pressure at corner power holds the pump on full stroke at max speed and max
pressure.
Maximum servo pressure is the highest pressure typically given by the charge pressure setting.

Charge Pressure
An internal charge relief valve regulates charge pressure. Charge pressure supplies the control withpressure to operate the swashplate and to maintain a minimum pressure in the low side of thetransmission loop.
The charge pressure setting listed in the order code is the set pressure of the charge relief valve with thepump in neutral, operating at 1800 min-1 (rpm), and with a fluid viscosity of 32 mm2/s [150 SUS].
Pumps configured with no charge pump (external charge supply) are set with a charge flow of 30 l/min[7.93 US gal/min] and a fluid viscosity of 32 mm2/s [150 SUS].
The charge pressure setting is referenced to case pressure. Charge pressure is the differential pressure
above case pressure.
Minimumchargepressureis the lowest pressure allowed to maintain a safe working condition in the low side ofthe loop. Minimum control pressure requirements are a function of speed, pressure,and swashplate angle, and may be higher than the minimum charge pressure shownin the Operating parameters tables.

Maximumchargepressureis the highest charge pressure allowed by the charge relief adjustment, and which
provides normal component life. Elevated charge pressure can be used as asecondary means to reduce the swashplate response time.

Charge Pump Inlet Pressure
At normal operating temperature charge inlet pressure must not fall below rated charge inlet pressure(vacuum).
Minimum charge inlet
pressureis only allowed at cold start conditions. In some applications it isrecommended to warm up the fluid (e.g. in the tank) before starting theengine and then run the engine at limited speed.

Maximum charge inlet
pressure

may be applied continuously.

Case Pressure
Under normal operating conditions, the rated case pressure must not be exceeded. During cold start casepressure must be kept below maximum intermittent case pressure. Size drain plumbing accordingly.
The auxiliary pad cavity of axial pumps configured without integral charge pumps is referenced to casepressure. Units with integral charge pumps have auxiliary mounting pad cavities referenced to charge
inlet (vacuum).
Possible component damage or leakage.
Operation with case pressure in excess of stated limits may damage seals, gaskets, and/or housings,
causing external leakage. Performance may also be affected since charge and system pressure are
additive to case pressure.
12 | © Danfoss | December 2022

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Technical Information
Series 90 Axial Piston Pumps
Operating Parameters
External Shaft Seal Pressure
In certain applications the input shaft seal may be exposed to external pressure. In order to prevent
damage to the shaft seal the maximum differential pressure from external sources must not exceed 0.4
bar (5.8 psi) over pump case pressure.
The case pressure limits of the pump must also be followed to ensure the shaft seal is not damaged.

C Caution
Regardless of the differential pressure across the shaft seal, the shaft seal has been known to pump oilfrom the external source (e. g. gear box) into the pump case.
Temperature
The high temperature limits apply at the hottest point in the transmission, which is normally the motor
case drain. The system should generally be run at or below the quoted rated temperature.
The maximum intermittent temperature is based on material properties and should never be
exceeded.
Cold oil will generally not affect the durability of the transmission components, but it may affect theability of oil to flow and transmit power; therefore temperatures should remain 16 °C [30 °F] above thepour point of the hydraulic fluid.
The minimum temperature relates to the physical properties of component materials.
Size heat exchangers to keep the fluid within these limits. Danfoss recommends testing to verify thatthese temperature limits are not exceeded.
Viscosity
For maximum efficiency and bearing life, ensure the fluid viscosity remains in the recommended range.
The minimum viscosity should be encountered only during brief occasions of maximum ambient
temperature and severe duty cycle operation.
The maximum viscosity should be encountered only at cold start.

© Danfoss | December 2022

BC152886483413en-000911 | 13

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters
Filtration System
To prevent premature wear, ensure only clean fluid enters the hydrostatic transmission circuit. A filter
capable of controlling the fluid cleanliness to ISO 4406 class 22/18/13(SAE J1165) or better, under normal operating conditions, is recommended.
These cleanliness levels can not be applied for hydraulic fluid residing in the component housing/case or
any other cavity after transport.
The filter may be located on the pump (integral) or in another location (remote).
The integral filter has a filter bypass sensor to signal the machine operator when the filter requires
changing. Filtration strategies include suction or pressure filtration. The selection of a filter depends on anumber of factors including the contaminant ingression rate, the generation of contaminants in thesystem, the required fluid cleanliness, and the desired maintenance interval. Filters are selected to meet
the above requirements using rating parameters of efficiency and capacity.
Filter efficiency can be measured with a Beta ratio¹ (βX). For simple suction-filtered closed circuit
transmissions and open circuit transmissions with return line filtration, a filter
with a β-ratio within the range of β35-45 = 75 (β10 ≥ 2) or better has been found to be satisfactory. For
some open circuit systems, and closed circuits with cylinders being supplied from the same reservoir, aconsiderably higher filter efficiency is recommended. This also applies to systems with gears or clutches
using a common reservoir.
For these systems, a charge pressure or return filtration system with a filter β-ratio in the range of β15-20 =75 (β10 ≥ 10) or better is typically required.
Because each system is unique, only a thorough testing and evaluation program can fully validate thefiltration system. Please see Design Guidelines for Hydraulic Fluid Cleanliness Technical Information,
BC152886482150 for more information.
1 Filter βx-ratio is a measure of filter efficiency defined by ISO 4572. It is defined as the ratio of the numberof particles greater than a given diameter (“x” in microns) upstream of the filter to the number of theseparticles downstream of the filter.

W Warning
Clogged filters can cause cavitation, which damages the charge pump. We recommend a filter bypass
with a filter bypass sensor to prevent damage due to blocked suction filters.

Filtration Options
Suction filtration – Option S
The suction filter is placed in the circuit between the reservoir and the inlet to the charge pump, asshown below.
The use of a filter contamination monitor is recommended.
Suction filtration
Manomete r

Hydraulic fluidreservoir

Charge pump

To lowloop andcontrol

14 | © Danfoss | December 2022

FilterAdjustablecharge pressure relief valve
To pump case

P102 003E

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters
Charge pressure filtration (partial charge pump flow)
Two types of pressure filtration exist for most Series 90 pumps. The two types are: remote pressure
filtration (filter remotely mounted on vehicle) and integral pressure filtration (filter mounted to theendcap). Verify option availability in the size specific technical information.
In either case the filtration circuit is the same with the filter element situated in the circuit downstream
the charge pump and upstream of the charge relief valve such that full charge flow is continuously
filtered, as shown in the accompanying illustrations. Charge pressure filtration can mitigate high inlet
vacuum in cold start-ups and provides fluid filtration immediately prior to entrance to the loop and thecontrol system. Pressure filtration provides a higher level of filtering efficiency than suction filtration.
Filters used in charge pressure filtration circuits must be rated to at least 35 bar [508 psi] pressure. A 100 –125 μm screen located in the reservoir or in the charge inlet line is recommended when using chargepressure filtration.
Technical data according to ISO 16889
Nominal flow at 30mm2/s and ∆P 0.5 bar[7.3 psi] (clean filter element only)

Minimum β-ratio

Short

60 l/minβ7.5(C)=75 (β5(C) ≥10)Long

105 l/min

Remote charge pressure filtration
A special adapter head is available to allow for the charge filter to be located conveniently for easy
service and replacement. Care should be taken to minimize the hydraulic pressure drops associated withlong connecting lines, small diameter hoses, or restrictive port adaptors at the filter head or endcap.
Ensure the normal operating pressure drop across the remote filtration in and out ports is sufficiently
below the crack pressure setting of the recommended filter bypass valve.
Charge pressure filtration
ScreenHydraulic fluid reservoir

Adjustablecharge pressure
relief valve
Charge pump

To lowpressureside andcontrol

FilterTo pump case
P102 004E

W Warning
Remote filter heads without bypass and poor plumbing design can encounter excessive pressure dropsthat can lead to charge pump damage in addition to contaminants being forced through the filter media
and into the transmission loop.
Fluid Selection
Ratings and performance data are based on operating with hydraulic fluids containing oxidation, rustand foam inhibitors. These fluids must possess good thermal and hydrolytic stability to prevent wear,
erosion, and corrosion of pump components.
Never mix hydraulic fluids of different types.
Reservoir
The hydrostatic system reservoir should accommodate maximum volume changes during all system
operating modes and promote de-aeration of the fluid as it passes through the tank. A suggested© Danfoss | December 2022

BC152886483413en-000911 | 15

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters
minimum total reservoir volume is 5⁄8 of the maximum charge pump flow per minute with a minimum
fluid volume equal to ½ of the maximum charge pump flow per minute. This allows 30 seconds fluid
dwell for removing entrained air at the maximum return flow. This is usually adequate to allow for aclosed reservoir (no breather) in most applications.
Locate the reservoir outlet (charge pump inlet) above the bottom of the reservoir to take advantage ofgravity separation and prevent large foreign particles from entering the charge inlet line. A 100-125 μm
screen over the outlet port is recommended. Position the reservoir inlet (fluid return) to discharge below
the normal fluid level, toward the interior of the tank. A baffle (or baffles) will further promote de-aeration
and reduce surging of the fluid.
Case Drain
All single S90 pumps are equipped with multiple drain ports. Port selection and case drain routing must
enable the pump housing to maintain a volume of oil not less than half full and normal operating casepressure limits of the unit are maintained. Case drain routing and design must consider unit case pressure
ratings.
A case drain line must be connected to one of the case outlets to return internal leakage to the system
reservoir.
Do not over torque the fitting on case drain port L2 (located on the side cover). The proper torque is 100
N•m [74 lbf•ft] maximum. Over torquing the fitting may change the neutral position of the swashplate.

Pump Life
Pump life depends on several factors, such as speed, pressure, and swashplate angle. For detailed
product life calculation, please contact your Danfoss representative.
Charge Pump
Charge flow is required on all Series 90 pumps applied in closed circuit installations. The charge pumpprovides flow to make up internal leakage, maintain a positive pressure in the main circuit, provide flow
for cooling and filtration, replace any leakage losses from external valving or auxiliary systems, and toprovide flow and pressure for the control system.
Many factors influence the charge flow requirements and the resulting charge pump size selection. These
factors include system pressure, pump speed, pump swashplate angle, type of fluid, temperature, size ofheat exchanger, length and size of hydraulic lines, control response characteristics, auxiliary flow
requirements, hydrostatic motor type, etc. When initially sizing and selecting hydrostatic units for an
application, it is frequently not possible to have all the information necessary to accurately evaluate all
aspects of charge pump size selection.
Unusual application conditions may require a more detailed review of charge pump sizing. Chargepressure must be maintained at a specified level under all operating conditions to prevent damage to thetransmission. Danfoss recommends testing under actual operating conditions to verify this.
Charge pump sizing/selection
In most applications a general guideline is that the charge pump displacement should be at least 10 % of
the total displacement of all components in the system. Unusual application conditions may require amore detailed review of charge flow requirements. Refer to Selection of Drive line Components,
BC157786484430, for a detailed procedure.
System features and conditions which may invalidate the 10 % guideline include (but are not limited to):16 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters

•
•
•
•
•

Continuous operation at low input speeds (< 1500 min-1 (rpm))
High shock loading and/or long loop lines
High flushing flow requirements
Multiple Low Speed High Torque motors
High input shaft speeds

Bearing Loads and LifeIn vehicle propel drives with no external shaft loads , and where the system pressure and swashplateangle are changing direction and magnitude regularly, the normal L20 bearing life (80% survival) will
exceed the hydraulic life of the unit.
In non-propel drives, such as vibratory drives, conveyor drives and fan drives, the operating speed andpressure are often nearly constant and the swashplate angle is predominantly at maximum. These drives
have a distinct duty cycle compared to a propulsion drive. In these types of applications, a bearing life
review is recommended.
For bearing life, speed, pressure, swashplate angle, plus external loads will be considered. Other factorsthat affect bearing life include fluid type, viscosity, and cleanliness.
Applications with external shaft loads
External loads are found in applications where the pump is driven with a side/thrust load (belt drive orgear drive) as well as in installations with misalignment and improper concentricity between the pumpand drive coupling. All external loads act to reduce bearing life.
In applications where you cannot avoid external radial shaft loads, orient the load to 0° or 180° position.
Use tapered output shafts or clamp-type couplings where radial shaft loads are present.
In addition, external thrust loads can reduce bearing life in systems with low delta pressure or in
combination with external radial loads/bending moments.
Re = Me / L
Me = Shaft moment
L = Flange distance
Re = External force
Radial load position
0°Re

B

L
Re

270°
Re

90°
Re

A

180°ReP108 549E

Maximum allowable external shaft load
Parameter

055

075

100

130

180

250

External moment (Me)N•m [lbf•in]

101
[893]

118
[1043]

126[1114]

140[1238]*** no tapered shaft available© Danfoss | December 2022

BC152886483413en-000911 | 17

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters
If continuous applied external radial loads are 25% of the maximum allowable or more or thrust loads/
bending moments known to occur, contact your Danfoss representative for an evolution of bearing life.
Avoid external thrust loads in either direction.
Understanding and Minimizing System Noise
Noise is transmitted in fluid power systems in two ways: as fluid borne noise, and structure borne noise.
Fluid-borne noise (pressure ripple or pulsation) is created as pumping elements discharge oil into thepump outlet. It is affected by the compressibility of the oil, and the pump's ability to transition pumping
elements from high to low pressure. Pulsations travel through the hydraulic lines at the speed of sound(about 1400 m/s [4600 ft/sec] in oil) until there is a change (such as an elbow) in the line. Thus, amplitudevaries with overall line length and position.
Structure born noise is transmitted wherever the pump casing connects to the rest of the system. The
way system components respond to excitation depends on their size, form, material, and mounting.
System lines and pump mounting can amplify pump noise.
Follow these suggestions to help minimize noise in your application:• Use flexible hoses.

•
•
•
•
•

Limit system line length.
If possible, optimize system line position to minimize noise.
If you must use steel plumbing, clamp the lines.
If you add additional support, use rubber mounts.
Test for resonants in the operating range; if possible avoid them.

Sizing Equations
The following equations are helpful when sizing hydraulic pumps. Generally, the sizing process is
initiated by an evaluation of the machine system to determine the required motor speed and torque toperform the necessary work function. Refer to Selection of drive line components, BC157786484430, for amore complete description of hydrostatic drive line sizing. First, the motor is sized to transmit the
maximum required torque. The pump is then selected as a flow source to achieve the maximum motor
speed.

SI units

Output f ow Q =Vg • n • η v
1000(l/min..)Input torque M=

Vg • ′p
20 • π • η m(N•m)

M•n •πInput power P = 30 000
US units′p =Q • ′p= 600 • η(kW)tOutput f ow Q =Vg • n • η v(US gal/min..)
231

Input torque M=

Vg • ′p2 • π • ηm

n
ηv
ηm
ηt

=
=
=
=

Vg =
′p =

(lbf•in)Q • ′pM•n •πInput power P = 198= 1714 • η000

18 | © Danfoss | December 2022

Vg =

t

(hp)

n
ηv
ηm
ηt

=
=
=
=

Displacement per revolution(cm 3/rev)
p O - p i (system pressure)(bar)
Speed (min -1(rpm))
Volumetric eff ciency
Mechanical eff ciency
Overall eff ciency (η v • η m)
Displacement per revolution(in 3/rev)
p O - p i (system pressure)(psi)
Speed (min -1(rpm))
Volumetric eff ciency
Mechanical eff ciency
Overall eff ciency (η v • η m)

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters
Mounting Flange Loads
Adding tandem mounted auxiliary pumps and/or subjecting pumps to high shock loads may result inexcessive loading of the mounting flange.
Applications which experience extreme resonant vibrations or shock may require additional pumpsupport. The overhung load moment for multiple pump mounting may be estimated using the formula
below.
Overhung load example
L3
L2

F3

F2

L1

F1
Second stage

First stage

Third
stage
P108 511E

Estimated maximum and rated acceleration factors for some typical applications are shown in the tablebelow.

Estimating overhung load moments
Based on SI units
W = Mass of pump kg
L = Distance from mounting f ange
to pump center of gravity(refer to Installation drawings section)

Based on US units
W = Weight of pump [lb]
L = Distance from mounting f ange [in]to pump center of gravity
MR = GR (W1L1 + W2L2 + ... + WnLn)
MS = GS (W1L1 + W2L2 + ... + WnLn)

MR = g • GR (W1L1 + W2L2 + ... + WnLn)
MS = g • GS (W1L1 + W2L2 + ... + WnLn)

Where:
Where:
MR = Rated load moment N•m
MR = Rated load moment N•m
MS = Shock load moment N•m
MS = Shock load moment N•m
g = Gravity 9.81 m/s2
GR = Calculation factor for rated (vibratory) acceleration (G’s)*
GS = Calculation factor for maximum shock acceleration (G’s)** This factor depends on the application (see next page).

Use these values for a rough load estimation in the absence of specific data.
Typical G loads for various applications
Application

Skid Steer Loader© Danfoss | December 2022

Calculation factor
Rated (vibratory)
acceleration GR

Maximum (shock)acceleration GS

8

15-20

Trencher (rubber tires)

3

8Asphalt Paver

2

6

Windrower

2

5

BC152886483413en-000911 | 19

Technical Information
Series 90 Axial Piston Pumps
System Design Parameters
Typical G loads for various applications (continued)
Application

Calculation factor
Rated (vibratory)
acceleration GR

Maximum (shock)acceleration GS

Aerial Lift

1.5

4

Turf Care Vehicle

1.5

4

Vibratory Roller

6

10T000 165E

Allowable overhung load moment values are shown in the following table.
Allowable overhung load moments
Frame size

20 | © Danfoss | December 2022

Rated moment (MR)Shock load moment (MS)N•mlbf•inN•mlbf•in055

1580

14 0005650

50 000075

1580

14 0005650

50 000100

1580

14 0005650

50 000130

3160

28 000

10 73095 000180

6070

54 00020 600182 000

250

6070

54 00020 600182 000

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Master Model Code
Series 90 Master Model Code Breakdown
R

Size

M

P

J

G

N F

L

H

T

W

Y

Z

K

S90

S90 Rotation and Size Options
R – Rotation
Code

Description

055

075

100

130

180

250

R

Right hand [CW]

X

X

X

X

X

X

L

Left hand [CCW]

X

X

X

X

X

X

055

55 cc [3.36 in3] max displacement per revolution

X075

75 cc [4.58 in3] max displacement per revolution

100

100 cc [6.10 in3] max displacement per revolution

Size

130

130 cc [7.93 in3] max displacement per revolution

180

180 cc [10.98 in3] max displacement per revolution

250

250 cc [15.26 in3] max displacement per revolution© Danfoss | December 2022

X
X
X
X
X

BC152886483413en-000911 | 21

Technical Information
Series 90 Axial Piston Pumps
Master Model Code
S90 Control Options
M – Controls
Code

Description

CA

Cover plate without feedback link, no control

X

X

X

DC

3 position F-N-R solenoid control (12V, DC) DIN
connector

X

X

X

DD

3 position F-N-R solenoid control (24V, DC) DIN
connector

X

X

X

X

X

X

HF

HDC 2, std. porting, 3, 0-11 bar [44-160 psi]

X

X

X

X

X

X

KA

EDC, MS connector, std. porting, dual coil (14-85 mA)

X

X

X

X

X

X

KN

EDC, MS connector, std. porting, 643 Ohm single coil
(4-20 mA)

X

X

X

X

X

X

KT

EDC DEUTSCH connector, std. porting, dual coil (14-85
mA)

X

X

X

X

X

X

KP

EDC, Weatherpack connector, std. porting, dual coil
(14-85 mA)

X

X

X

X

X

X

MA

MDC

X

X

X

X

X

X

MB

MDC with neutral start switch

X

X

X

X

X

X

FA

NFPE control with 12V Amp connector; proportionalsolenoid with pressure reducing valve (25 bar)

X

X

FB

NFPE control with 24V Amp connector; proportionalsolenoid with pressure reducing valve (25 bar)

X

X

FC

NFPE control with 12V Amp connector; proportionalsolenoid with pressure reducing valve (32 bar)

X

X

FD

NFPE control with 24V Amp connector; proportionalsolenoid with pressure reducing valve (32 bar)

X

X

FG

NFPE control with 12V Amp connector; proportionalsolenoid with pressure reducing valve (32 bar) fast
response

X

X

X

X

FH

NFPE control with 24V Amp connector; proportionalsolenoid with pressure reducing valve (32 bar) fast
response

X

X

X

X

FK

NFPE control with 12V AMP connector; proportionalsolenoid with pressure reducing valve (25 bar)

XFL

NFPE control with 24V AMP connector; proportionalsolenoid with pressure reducing valve (25 bar)XFM

NFPE control with 12V Amp connector; proportionalsolenoid with pressure reducing valve (32 bar) fast
response

X

FN

NFPE control with 24V Amp connector; proportionalsolenoid with pressure reducing valve (32 bar)X

22 | © Danfoss | December 2022

055

075

100

130

180

250

X

X

X

X

X

X

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Master Model CodeS90 Pressure, Aux Mounting, Ports, Filtration, Displacement LimitationP – High pressure regulation
Code

Description

055

075

100

130

180

250

1

Pressure limiter for port A and B (140-450 bar)

X

X

X

X

X

X

2

High pressure relief valves for port A and B (90-450
bar)

X

X

X

X

X

X

J – Auxiliary Mounting Pad
AB

SAE-A with sealed cover, 9 teeth coupling

X

X

X

X

X

X

BB

SAE-B with sealed cover, 15 teeth coupling

X

X

X

X

X

X

BC

SAE-B with sealed cover, 13 teeth coupling

X

X

X

X

X

X

CD

SAE-C with sealed cover, 4 bolt adapter, 14 teeth
coupling

X

X

X

X

X

X

DE

SAE-D with sealed cover, 13 teeth coupling

X

X

X

EF

SAE-E with sealed cover, 13 teeth coupling

X

X

NN

No auxiliary mounting pad

X

X

X

X

X

X

G – Endcap ports
60

Side ports

X

80

Twin ports

X

X
X

X
X

X

X

X

N – Filtration
D

External charge pump

X

X

X

X

L

Pressure integral (long filter)

X

X

X

X

P

Pressure integral (short filter)

X

X

X

X

R

Remote pressure

X

X

X

X

T

Remote pressure with SAE 1 1/16 thread ports forhigh flow

S

Suction filtration

X

X

X

X

X

X

X

X

X

X

F – Displacement limitation
C

No limiters (180 cc only)

X

M

Limitation on both sides (180 cc only)X

3

No limiters

X

X

X

X

X

4

Limitation on both sides

X

X

X

X

X

7

No limiters, special servo cylinder side 1 with hardspring (for pumps with NFPE control only)

X

X

X

X

© Danfoss | December 2022

X

BC152886483413en-000911 | 23

Technical Information
Series 90 Axial Piston Pumps
Master Model Code
S90 Shaft and Charging System
L – Shaft Options
Code

Description

055

075

100

C6

Splined shaft, 21 teeth, 16/32 pitch

X

X

X

C7

Splined shaft, 23 teeth, 16/32 pitch

X

X

C8

Splined shaft, 27 teeth, 16/32 pitch

F1

Splined shaft, 13 teeth, 8/16 pitch

S1

Splined shaft, 14 teeth, 12/24 pitch

G1

Splined shaft, 25 teeth, 20/40 pitch

T1

Tapered shaft, 34.925 mm diameter

T6

Tapered shaft, 38.1 mm diameter

T8

Tapered shaft, 25.4 mm diameter

T4

Tapered shaft, 44.45 mm diameter

X
X

X

X

X

X

X

X
X

130

180

250

X

X

X

X

X

X

X
X

H – Charging System
B

11 cc/rev nominal flow

XC

14 cc/rev nominal flow

X

X

D

17 cc/rev

X

X

E

20 cc/rev

F

26 cc/revH

34 cc/revJ

47 cc/rev

K

65 cc/rev

L

External charge pump with internal charge pressure
relieve valve for units with auxiliary mounting pad

N

External charge pump with internal charge pressure
relieve valve for units without auxiliary mounting pad

24 | © Danfoss | December 2022

X

X
X
X

X
X

X
X

X
X

X

X

X

X

X

X

X

X

X

X

X

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Master Model Code
S90 Control Orifice Options
T – Control Orifice Options for MDC
Code

Inlet P

Drain TA

Drain TB
1.6*

Servo A

Servo B

055

075

100

130

180

250
X

00

None

1.6*

None

None

X

X

X

X

X

03

0.81

1.6*

1.6*

None

None

X

X

X

X

X

X

05

1.37

1.6*

1.6*

None

None

X

X

X

X

X

X

C5

0.81

1.4

1.4

None

None

X

X

X

X

X

X

C6

1.37

1.4

1.4

None

None

X

X

X

X

X

X

* No orifice installed in control,orifice hole in control spool

T – Control Orifice Options for EDC
CodeInlet P

Drain TA

Drain TB

Servo A

Servo B

055

075

100

130

180

250

00

None

1.3

1.3

None

None

X

X

X

X

X

X

03

0.81

1.3

1.3

None

None

X

X

X

X

X

X

05

1.37

1.3

1.3

None

None

X

X

X

X

X

X

33

0.81

None

None

None

None

X

X

X

X

X

X

T – Control Orifice Options for FNR
CodeInlet P

Drain T

Servo A

Servo B

055

075

100

130

180

250

G1

None

1.2

None

None

X

X

X

X

X

X

G4

0.46

1.2

None

None

X

X

X

X

X

X

G8

0.66

1.2

None

None

X

X

X

X

X

X

GB

0.81

1.2

None

None

X

X

X

X

X

X

GD

1.57

1.2

None

None

X

X

X

X

X

X

T – Control Orifice Options for HDC
CodeInlet P

Drain TA

Drain TB

Servo A

Servo B

055

075

100

130

180

250

00

None

1.3

1.3

None

None

X

X

X

X

X

X

003

0.81

1.3

1.3

None

None

X

X

X

X

X

X

005

1.37

1.3

1.3

None

None

X

X

X

X

X

X

T – Control Orifice Options for NFPE
Code

Inlet P

Drain T

Servo A

Servo B

055

075

100

130

180

250

B1

None

B2

None

1.5

None

None

X

X

X

X

X

X

None

1.2

1.2

X

X

X

X

X

X

B6

None

None

None

None

© Danfoss | December 2022

X

BC152886483413en-000911 | 25

Technical Information
Series 90 Axial Piston Pumps
Master Model Code
S90 Special Hardware and Pressure Settings
W – Special Hardware Features
Code

Description

055

075

100

130

EEG

Speed ring, no sensor, CP30 + 4.3° valve plate

X

X

X

X

EFC

Speed sensing, Turck connector (KPP x 156), CP15 +
1.5° valve plate

X

X

X

EFI

Speed sensing Turck connector (KPP x 156) CP30 +4.3° valve plate

X

X

X

X

FAC

Nest T-bar springs CP15 + 1.5° valve plate

X

X

X

X

FAD

Nested T-bar springs CP15 + 0.5° valve plate

X

X

X

X

GBA

CP15 + 0.5° valve plate

X

X

X

X

GCA

CP15 + 1.5° valve plate

X

X

X

X

GLA

CP30 + 4.3° valve plate, CP30 valve plug

X

X

X

X

NNN

180cc: CP15 + 0.5° valve plate
250cc: CP15 + 1.5° valve plate, nested T-bar springs

180

250

X

X
X

X
X

X

X

X

Y – High Pressure Setting A
26

260 bar

X

X

X

X

X

X

32

320 bar

X

X

X

X

X

X

35

350 bar

X

X

X

X

X

X

38

380 bar

X

X

X

X

X

X

40

400 bar

X

X

X

X

X

X

42

420 bar

X

X

X

X

X

X

Z – High Pressure Setting B
26

260 bar

X

X

X

X

X

X

32

320 bar

X

X

X

X

X

X

35

350 bar

X

X

X

X

X

X

38

380 bar

X

X

X

X

X

X

40

400 bar

X

X

X

X

X

X

42

420 bar

X

X

X

X

X

X

K – Charge Pressure Setting
20

20 bar

X

X

X

X

X

X

22

22 bar

X

X

X

X

X

X

24

24 bar

X

X

X

X

X

X

26

26 bar

X

X

X

X

X

X

28

28 bar

X

X

X

X

X

X

30

30 bar

X

X

X

X

X

X

32

32 bar

X

X

X

X

X

34

34 bar

X

X

X

X

X

26 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features
3-Position (FNR) Electric Control - DC, DD
The 3-Position (FNR) control uses an electric input signal to switch the pump to a full stroke position. To
use the FNR control in a PLUS+1 Guide application, download HWD file 10106826 fromwww.Danfoss.com/PLUS+1.

W Warning
Avoid designing a system which places the swashplate into full stroke when control operation is blocked
by contamination.
Solenoid connector
Solenoid plug face for DIN 43650 connector
DANFOSS
mating parts kit
Part No. K09129
Not connected12Voltage between terminals 1 and 2

Displacement

Pump displacement vs. electrical signal

-b

100 %

"0"

b

Voltage VDC

100 %P102 023

3-position electric control hydraulic schematic

a

b

M5 M4

T P
P102021

Solenoid Data

© Danfoss | December 2022

Code

Voltage

Current

ConnectorDC

12 Vdc

340 mADIN 46350

DD

24 Vdc

170 mADIN 46350

BC152886483413en-000911 | 27

Technical Information
Series 90 Axial Piston Pumps
Control Features

B

A

P108 495E

Response time
The time required for the pump to change from zero to full flow (acceleration), or full flow to zero(deceleration), is a function of the size of the orifice, the charge pressure, valve plates and other vehicle
dynamics.
A range of orifice sizes are available for the Series 90 FNR Control to assist in matching the rate ofswashplate response to the acceleration and deceleration requirements of the application. Testingshould be carried out to determine the proper orifice selection for the desired response. For more
information regarding response time for individual orifices, please contact your Danfoss representative.
Pump output flow direction vs. control signal
Input shaft rotation

CW

CCW

Signal at solenoid

A

B

A

B

Port A flow (M1)

Out

In

In

Out

Port B flow (M2)

In

Out

Out

In

Servo cylinder (side)

M5 (2)

M4 (1)

M5 (2)

M4 (1)W Warning
Avoid designing a system which puts the swashplate into full stroke when control operation is blocked
by contamination.

Electric Displacement Control (EDC), Options KA, KP, KT
The electric displacement control uses an electrohydraulic Pressure Control Pilot (PCP) valve to control
the pilot pressure. The PCP converts an electrical input signal to a hydraulic input signal to operate a 4way servo valve, which ports hydraulic pressure to either side of a double acting servo piston. The servo
piston tilts the cradle swashplate, thus varying the pump's displacement from full displacement in one
direction to full displacement in the opposite direction.
The control has a mechanical feedback mechanism which moves the servo valve in relation to the input
signal and the angular position of the swashplate. The electrical displacement control is designed so the
angular rotation of the swashplate (pump displacement) is proportional to the electrical input signal. Due
to normal operating force changes, the swashplate tends to drift from the position preset by the machine
operator. Drift, sensed by feedback linkage system connecting the swashplate to the control valve, will
activate the valve and supply pressure to the servo piston, maintaining the swashplate in its preset
position.
Features and Benefits•••

28 | © Danfoss | December 2022

The electric displacement control is a high gain control: With only a small change of the input current,
the servo valve moves to a full open position thus porting maximum flow to the servo cylinder.
Oil filled PCP case lengthens control life by preventing moisture ingression and dampening
component vibrations.
All electrical displacement controls are equipped with dual coil PCPs. The user has the option of using
a single coil or both coils (in series or parallel).

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features•••

Internal mechanical stops on the servo valve allow rapid changes in input signal voltages without
damaging the control mechanism.
Precision parts provide repeatable accurate displacement settings.
The swashplate is coupled to a feedback mechanism. The control valve drains the ends of the servo
piston when an electric input signal is not present.

Benefits
Pump returns to neutral after prime mover shuts down••

Pump returns to neutral if external electrical input signal fails or if there is a loss of charge pressure

Electric displacement control schematic
X2

Feedback fr om
swashpla te

X1

M5 M4

T

P

P102 024E

Cross-section
P C P
X1

X2

T M4 P M5 T
P102 025

To use the EDC control in a PLUS+1 Guide application, download HWD file 10106626 fromwww.Danfoss.com/Plus1.

© Danfoss | December 2022

BC152886483413en-000911 | 29

Technical Information
Series 90 Axial Piston Pumps
Control Features
Electrical Characteristics
One of Dual Coils
A

B

C

Dual Coils in Parallel

D

A

ELECTRICALROTATION

A or CCounterclockwise

Full Stroke Current
Start Current
Full Stroke Current

C

D

A

Produces
Flow Out of
Pump PortA

D

A and CA/B 14 mA± 3 mA
with 0.3 Vdc
A/B 85 mA± 11 mA
with 1.7 Vdc
C/D 14 mA± 3 mA
with 0.23 Vdc
C/D 85 mA± 11 mA
with 1.36 Vdc

B+ phasing to terminals

B and D
A

B
B

B and DD

14 mA with 0.13 Vdc

7 mA with 0.25 Vdc

85 mA with 0.75 Vdc

43 mA with 1.55 Vdc

B or D

Start Current

A

D

A and CB or D

ClockwiseC+ phasing to terminals

A or C

Clockwise

Counterclockwise
REQUIREMENTS

P UMP S HAFT

+ phasing to terminals

B

Dual Coils in SeriesA

P108 497E

The EDC is designed to be controlled from a DC current source or voltage source. Pulse width modulation(PWM) is not required. If a PWM signal is used to carry frequency greater than 200 Hz, do not use a pulse
current of more than 120% of that required for full output.
Control signal requirements
Recommended PWM signal is 200 Hz, avoid exceeding 440 Hz.

W Warning
Maximum input current under any condition: 250 mA
PWM frequency: 200 Hz
Coil resistance at 24°C [75°F]:
A-B coil 20 Ω
C-D coil 16 Ω
MS connector (option KA) MS 3102C-14S-2P

D
C

A
B

Danfossmating parts kit
Part no. K01588
Ident No. 615062

Packard® Weather-Pack (option KP) 4-way shroud connector

A
B
C

Danfossmating parts kit
Part no. K03384(female terminals)

D

30 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features
Pump displacement vs. control current

Displacement

100 %

-b

-a

"0"

Current mA
a

b

100 %

P102 026E

Deutsch DT Series connector (option KT)
4 pin Deutsch® Plug DT Series Connector

(D) 4
(C) 3

Danfoss
1 (A) mating parts kit
2 (B) Part no. K23511
P108 815E

Response time
The time required for the pump output flow to change from zero to full flow (acceleration) or full flow tozero (deceleration) is a function of the size of the orifice in the control flow passage, charge pressure,valve plate and other vehicle dynamics.
A range of orifice sizes is available for the Series 90 Electric Displacement Control to assist in matching therate of swashplate response to the acceleration and deceleration requirements of the application. Testingshould be carried out to determine the proper orifice selection for the desired response.
For more information regarding response times for individual orifices, contact your Danfoss
representative.
Pump output flow direction vs. control current
EDC using a single coil or dual coils in parallel (A and C common, B and D common)
Input shaft rotation

CW

CCW

Positive current to term

A or CB or D

A or CB or DPort A flow (M1)

Out

In

In

Out

Port B flow (M2)

In

Out

Out

In

Servo cylinder (side)

M5 (2)

M4 (1)

M5 (2)

M4 (1)EDC using a dual coil in series (B and C common)© Danfoss | December 2022

Input shaft rotation

CW

Positive current to term

A

D

CCW
A

D

Port A flow (M1)

Out

In

In

Out

BC152886483413en-000911 | 31

Technical Information
Series 90 Axial Piston Pumps
Control Features
EDC using a dual coil in series (B and C common) (continued)
Port B flow (M2)

In

Out

Out

In

Servo cylinder (side)

M5 (2)

M4 (1)

M5 (2)

M4 (1)

Refer to Installation Drawings for port locations.
For further information on EDC controls, refer to Electrical Displacement Control For Series 90 Pumps,
AN152886482128.
Manual Over Ride (MOR)
EDC controls are available with a Manual Over Ride (MOR) which is intended for temporary actuation of
the control to aid in pump diagnostics.

W Warning
Using the MOR to control the pump will not result in proportional control.
Refer to the control flow table in the size specific technical information manual for the relationship ofsolenoid to direction of flow.

W Warning
The vehicle must always be in a safe condition (i.e. vehicle lifted off the ground) when using the MOR
function. The MOR lever has a must be manually actuated to be engaged. Moving the plunger
mechanically moves the pilot stage armature which allows the pump to go on stroke. The MOR should beengaged anticipating a full stroke response from the pump.
Pump Phasing With EDC Manual Operator (MOR)Pump
R o ta tio n

MOR
Rotation

Pump FlowO u t P o rt

CW
CCW

Towards Connector
Towards Connector

B
A
P108 498E

Manual Over Ride (MOR)EDC Pilot Stage (PCP)EDC Second StageP108 496E

W Warning
Unintended MOR operation will cause the pump to go into stroke.

32 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features
Hydraulic Displacement Control (HDC), Option HF, HS

W Warning
Avoid designing a system which puts swashplate into full stroke when control operation is blocked bycontamination.
Operation
The hydraulic displacement control uses a hydraulic input signal to operate a 4-way servo valve, whichports hydraulic pressure to either side of a double acting servo piston. The servo piston tilts the cradle
swashplate, thus varying the pump's displacement from full displacement in one direction to full
displacement in the opposite direction.
The control has a mechanical feedback mechanism which moves the servo valve in relation to the input
signal and the angular rotation of the swashplate. The hydraulic displacement control is designed so the
angular position of the swashplate (pump displacement) is proportional to the hydraulic input signal
pressure. Due to normal operating force changes, the swashplate tends to drift from the position presetby the machine operator. Drift, sensed by feedback linkage system connecting the swashplate to thecontrol valve, activates the valve to supply pressure to the servo piston, maintaining the swashplate in its
preset position.
Features and Benefits

•
•
•
•

The hydraulic displacement control is a high gain control: With only small change of the input signal,
the servo valve moves to a full open position porting maximum flow to the servo cylinder.
Internal mechanical stops on the servo valve allow rapid changes in input signal pressure without
damaging the control mechanism.
Precision parts provide repeatable, accurate displacement settings with a given input signal.
The swashplate is coupled to a feedback mechanism. The control valve drains the ends of the servo
piston when an input signal is not present.

Benefits:• Simple - low cost design.

••

Pump returns to neutral after prime mover shuts down.
Pump returns to neutral if there is a loss of input signal pressure or if there is a loss of charge pressure.

Hydraulic displacement control schematic
X1

X2

M5 M4
Feedbackfromswashplat e© Danfoss | December 2022

T P
P102029

BC152886483413en-000911 | 33

Technical Information
Series 90 Axial Piston Pumps
Control Features
Cross-section
X1

X2

T M4 P M5 T
P102 030

W Warning
Maximum allowable signal pressure is 60 bar [870 psi]. Exceeding allowable signal pressure will cause
damage to the control.
Response time
The time required for the pump output flow to change from zero to full flow (acceleration) or full flow tozero (deceleration) is a function of the size of the orifice in the control flow passage, charge pressure,valve plates and other vehicle dynamics.
A range of orifice sizes are available for the Series 90 hydraulic displacement control to assist in matching
the rate of swashplate response to the acceleration and deceleration requirements of the application.
Testing should be carried out to determine the proper orifice selection for the desired response.
For more information regarding response time for individual orifices, please contact your Danfoss
representative.
Pump displacement vs. signal pressure
Displacement

100 %

-b

-a

"0"

Signal pressure

a

b

100 %

P102 031E

Hydraulic signal pressure range*
HF

HS

a

3 ± 0.5 bar

6 ± 0.5 barb

11 ± 0.5 bar

18 ± 0.5 bar

Pump output flow direction vs. control pressure
Pump output flow direction vs. control pressure

34 | © Danfoss | December 2022

Input shaft rotation

CW

CCW

Control pressure to port

X1

X2

X1

X2

Port A flow (M1)

Out

In

In

Out

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features
Pump output flow direction vs. control pressure (continued)
Input shaft rotation

CW

CCW

Port B flow (M2)

In

Out

Out

In

Servo cylinder (side)

M5 (2)

M4 (1)

M5 (2)

M4 (1)

Refer to Installation Drawings for port locations.
Manual Displacement Control (MDC), Options MA, MB

W Warning
Avoid designing a system which puts swashplate into full stroke when control operation is blocked bycontamination.
The manual displacement control converts a mechanical input signal to a hydraulic signal that tilts thecradle swashplate through an angular rotation varying the pump's displacement from full displacement
in one direction to full displacement in the opposite direction.
The manual displacement control has a mechanical feedback mechanism which moves a servo valve inthe proper relationship to the input signal and the angular position of the swashplate. The control isdesigned so that the angular rotation of the swashplate is proportional to the mechanical input signal.
The control is designed with an internal override mechanism which allows the mechanical input to be
moved at a faster rate than the movement of the swashplate without damage to the control.
Features and benefits

•
•
•
•
•

Precision parts provide repeatable, accurate displacement settings with a given input signal.
The manual displacement control is a high gain control: With only small movement of the control
handle (input signal), the servo valve moves to full open position porting maximum flow to the servo
cylinder. This is a high response system with low input force.
The integral override mechanism allows rapid changes in input signal without damaging the control
mechanism.
Precision parts provide repeatable, accurate displacement settings with a given input signal.
The double-acting servo piston is coupled to a spring centering mechanism. The servo control valve isspring centered such that with no input signal the servo valve is open centered and thus no fluid isported to the servo cylinder.

Benefits:- Pump returns to neutral after prime mover shuts down.

••- Pump returns to neutral if external control linkage fails at the control handle or if there is a loss ofcharge pressure.

Manual displacement control schematic
A–0–B

NeutralStart
SwitchFeedbackfromswashplate© Danfoss | December 2022

M5

M4

T

P

P102 035E

BC152886483413en-000911 | 35

Technical Information
Series 90 Axial Piston Pumps
Control Features
Cross-section
Control handle input signal

T M5 P M4 T

P102 033E

External control handle requirements•••

Torque required to move handle to maximum displacement is 0.68 to 0.9 N•m [6 to 8 lbf•in].
Torque required to hold handle at given displacement is 0.34 to 0.57 N•m [3 to 5 lbf•in].
Torque required to overcome the override mechanism is 1.1 to 2.3 N•m [10 to 20 lbf•in] with the
maximum torque required for full forward to full reverse movement.
Maximum allowable input torque is 17 N•m [150 lbf•in].

•Pump displacement vs. control lever rotation

Displacement

100 %

A

-b

-a

-35 max.

035 max.

Lever rotation
a

100 %

b

B

P102 034E

Control lever rotation rangea0,5° - 4.5°b

24° - 30°

Volumetric efficiencies of the system will have impacts on the start- and end input- commands.
Response TimeThe time required for the pump output flow to change from zero to full flow (acceleration) or full flow tozero (deceleration) is a function of the size of the orifice and charge pressure in the control, chargepressure, valve plates and other vehicle dynamics.
A range of orifice sizes is available for the Series 90 manual displacement control to assist in matching therate of swashplate response to the acceleration and deceleration requirements of the application. Testingshould be carried out to determine the proper orifice selection for the desired response. For more
information regarding response time for individual orifices, please contact your Danfoss representative.

36 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features
Pump output flow direction vs. control handle rotation
MDC handle rotation parameters

"A"

30°

Neutralposition

minim

"B"

30°
um minimum

Maximum
displacement

Maximum
displacement

P108 550E

Pump output flow direction vs. control handle rotation
Input shaft rotation

CW

CCW

Handle rotation

A

Port A flow (M1)

Out

Port B flow (M2)In

Servo cylinder (side)

M5 (2)

M4 (1)

B

A

B

In

In

Out

Out

Out

In

M5 (2)

M4 (1)

Refer to Installation Drawings for handle connection requirements
Neutral start switch (NSS) for MDC
The neutral start switch is an optional feature available with the MDC. When connected properly with thevehicle’s electrical system, the neutral start switch ensures that the prime mover can start only when thecontrol is in neutral position.
Non Feedback Proportional Electric Control (NFPE)The Non Feedback Proportional Electric (NFPE) control is an electrical automotive control in which an
electrical input signal activates one of two proportional solenoids that port charge pressure to either sideof the pump servo cylinder. The NFPE control has no mechanical feedback mechanism.
The pump displacement is proportional to the solenoid signal current, but it also depends upon pump
input speed and system pressure. This characteristic also provides a power limiting function by reducing
the pump swashplate angle as system pressure increases.
Control response
Series 90 controls are available with optional control passage orifices to assist in matching the rate ofswashplate response to the application requirements (e.g. in the event of electrical failure). Software
ramp or rate limiting should be used to control vehicle response in normal operation. The time required
for the pump output flow to change from zero to full flow (acceleration) or full flow to zero (deceleration)
is a net function of spool porting, orifices, charge pressure, valve plates and other vehicle dynamics. A
swashplate response table is available for each frame indicating available swashplate response times.
Testing a prototype system to verify the software and orifice selection provide the desired response.
Series 90 pumps have many orificing combinations, however, software is the best means of controlingthe swashplate response in normal operating conditions. Mechanical servo orifices should be used only
for fail-safe return to neutral in the event of an electrical failure.

© Danfoss | December 2022

BC152886483413en-000911 | 37

Technical Information
Series 90 Axial Piston Pumps
Control Features
Pump Displacement vs. Input Signal
100 %

′p

′p

=0

bar

= 30
0 ba

r

NFPE controlabSignal Current
mA(DC)cabcDisplacement

bar
=0
′p

′p

= 30
0 ba

r

"0"

P003 187E

100 %NFPE Schematic
M6
M5

M3

M4

A

M1

B

M2
L1

S

L2

P003 174

NFPE control used with a Danfoss microcontroller

•
•
•
•
•
•
•

Creep mode
Two automotive control ramps via mode switch
Engine overspeed protection
Electric control
Anti-stall function
Smooth operation
Electronic ramp control is superior to hydraulic control with orifices

Input signal requirements
The NFPE control requires a pulse-width-modulated (PWM) input current to optimize performance. The
recommended PWM frequency is 100 Hz. The minimum PWM frequency is 80 Hz.

38 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Control Features
Solenoid data
OptionFA

FB

Frame Size

55cc, 100cc

Voltage [V]

12

FC

FD

FK

FL

FM

FN

75cc
24

12

24

FG

FH

75cc, 100cc, 130cc,
180cc

12

24

12

24

12

24

32Working Pressure [Bar]

25

25

32

32

25

25

25

32

32

32

Maximum Current [mA]

1500

750

1500

750

1500

750

1500

750

1500

750

Start Current [mA]

440

220

440

220

440

220

440

220

440

220

End Current [mA]

1290

645

1280

645

1290

645

1290

645

1290

645

Coil Resistance [Ohm]4.72±5%20.8±5%5.3±5%

21.2±5%4.72±5%20.0±5%4.72±5%20.0±5%4.98±3%20.6±3%PWM Range [Hz]70-20070-20070-200PWM Prefered [Hz]

200

200

200

Protection Class

up to IP6K6/IPX7/IPX9K

up to IP6K6/IPX7/IPX9K

IP65 DIN 40050

Connector

Amp Junior Timer

AMP Junior Timer

Amp Junior Timer* PWM Signal Required for Optimum Control Performance.
To use the NFPE control in a PLUS+1 application, download the appropriate file from www.Danfoss.com/
PLUS+1.
NFPE pump displacement vs. input signal
Shaft rotation

CW

CCW

Active solenoid

1 and A

2 and B

1 and A

2 and B

Port A flow

Out

In

In

Out

Port B flow

In

Out

Out

In

Servo cylinder

M5

M4

M5

M4

The NFPE control uses an AMP® Junior Power Timer connector. The solenoids are compatible with
Danfoss microcontrollers and joysticks.

2

1

Amp Junior Power Timer
2 Pin Connector(Male Terminal)© Danfoss | December 2022

Mating Connector:
Danfoss
Identification Number
10102040

P108 500E

BC152886483413en-000911 | 39

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Multi-Function Valves
Overpressure protection
The Series 90 pumps are designed with a sequenced pressure limiting system and high pressure relief
valves. When the preset pressure is reached, the pressure limiter system acts to rapidly de-stroke thepump to limit the system pressure. For unusually rapid load application, the high pressure relief valve isalso available to limit the pressure level. The pressure limiter sensing valve acts as the pilot for the relief
valve spool, such that the relief valve is sequenced to operate above the pressure limiter level.
Both the pressure limiter sensing valves and relief valves are built into the multi-function valves locatedin the pump endcap. The sequenced pressure limiter/high pressure relief valve system in the Series 90
provides an advanced design of overpressure protection.
The pressure limiter avoids system overheating associated with relief valves and the sequenced relief
valves are available to limit pressure spikes which exist in severe operating conditions.
Because the relief valves open only during extremely fast pressure spike conditions, heat generation isminimized during the short time that they might be open. For some applications, such as dual pathvehicles, the pressure limiter function may be defeated such that only the relief valve function remains.
The relief response is approximately 20 ms whether used with or without the pressure limiter function.
Pressure limiting function
When set pressure is exceeded, the pressure sensing valve (A) flows oil through passage (B) and across anorifice in the control spool raising pressure on the servo which was at low pressure. Servo pressure relief
valves (C) limit servo pressure to appropriate levels. The pressure limiter action cancels the input
command of the displacement control and tends to equalize servo pressure. Swashplate moments assist
to change the displacement as required to maintain system pressure at the set point. The HPRV is always
set 30 bar above the pressure limiter setting.
HPRVs are factory set at a low flow condition. Any application or operating condition which leads toelevated HPRV flow will cause a pressure rise with flow above a valve setting. Consult factory for
application review. Excessive operation of the HPRV will generate heat in the closed loop and may cause
damage to the internal components of the pump.
Multifunction valve, pressure limiter, pressure regulation, option 1
To control
Multifunction valve

M3

A

M1
M4

A

Servo piston

Bypass hex
adjustment

Port A

M5

M

B
Servo pressure
relief valves

Port BC

Chargepressure
relief valve

Servo piston

M2
B
S

40 | © Danfoss | December 2022

L2

Multifunction valve

P102 007E

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Bypass Function
In some applications it is desirable to bypass fluid around the variable displacement pump when pumpshaft rotation is either not possible or not desired. For example, an inoperable vehicle may be moved to aservice or repair location or winched onto a trailer without operating the prime mover. To provide for
this, Series 90 pumps are designed with a bypass function.
The bypass is operated by mechanically rotating the bypass hex on both multifunction valves three (3)turns counterclockwise (CCW). This connects working loop A and B and allows fluid to circulate without
rotating the pump and prime mover.

W Warning
Excessive speeds and extended load/vehicle movement must be avoided while moving in bypass
function. The load or vehicle should be moved not more than 20 % of maximum speed and for a duration
not exceeding 3 minutes. Damage to drive motor(s) is possible. When the bypass function is no longer
needed care should be taken to re-seat the HPRV hex plugs to the normal operating position.

W Warning
Possible pump and/or motor damage.
Bypass valves are intended for moving a machine or vehicle for very short distances at very slow speeds.
They are NOT intended as tow valves.

Auxiliary Mounting Pads
Auxiliary mounting pad specifications
Mounting pad

Option code

Spline coupling

Frame size/Maximum torque N•m [lbf•ft]
055

075

100

130

180

250

SAE A

AB

9T 16/32

93 [69]97 [72]

97 [72]106 [78]

120 [89]

120 [89]

SAE B

BC

13T 16/32

204 [150]

211 [156]

211 [156]

334 [246]

324 [239]

324 [239]

SAE B-BBB

15T 16/32

342 [252]

281 [207]281 [207]368 [271]

368 [271]

368 [271]

SAE C

CD

14T 12/24

408 [301]

447 [330]

447 [330]

741 [546]

628 [463]

624 [460]

SAE D

DE

13T 8/16

n/a

n/a

n/a

741 [546]

1070 [789]1070 [789]

SAE E

EF

13T 8/16

n/a

n/a

n/a

n/a

1070 [789]1070 [789]

SAE E

EG

27T 16/32

n/a

n/a

n/a

n/a

1220 [900]1220 [900]Mating pump requirements
The accompanying drawing provides the dimensions for the auxiliary pump mounting flange and shaft.
Pump mounting flanges and shafts with the dimensions noted below are compatible with the auxiliary
mounting pads on the Series 90 pumps. An O-ring is required when a pump is bolted to an aux pad. Referto outline drawings for more details and O-ring dimensions.
The auxiliary flange cover seal is only used for product transportation. If there is no tandem pumps
requirement, it is recommended to use pump without auxiliary flange option. If you need to use pumpwith auxiliary flange but not rear pump for a long time, Please contact Danfoss technical personnel.

© Danfoss | December 2022

BC152886483413en-000911 | 41

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Auxiliary pump mounting flange and shaftD0Ø P -0.05

Mounting flange(Ref)

Minimum spline
engagementF
min.

[+0.000][-0.002]

E

Coupling

0.8 [0.03] RB
max.

preferred

P102 015E

Auxiliary pump dimensions
Flange sizeUnits

P diameter

B maximumD

F minimum

SAE A

mm [in]82.55[3.25]

7.4[0.29]

32[1.26]

13.5[0.53]

SAE B

101.6
[4.00]

10.7[0.42]

41[1.61]

14.2[0.56]SAE B-B

101.6[4.00]

10.7[0.42]

46[1.81]

16.1[0.63]

SAE C

127.0
[5.00]

14.3[0.56]

56[2.20]

18.3[0.72]

SAE D

152.4
[6.00]

14.3[0.56]

75[2.95]

20.8[0.82]

SAE E
13 teeth

165.1[6.50]

18.0[0.71]

75[2.95]

20.8[0.82]

SAE E
27 teeth

165.1[6.50]

18.0[0.71]

75[2.95]

27.0[1.06]

Displacement Limiter
All Series 90 pumps are designed with optional mechanical displacement (stroke) limiters.
The maximum displacement of the pump can be set independently for forward and reverse using thetwo adjustment screws.

W Warning
Adjusting the displacement limiter with the machine running may result in leakage. If backed out too far,the adjustment screw will come completely out of its threaded bore.
Displacement limiter location
Pump rotation
Right [CW]

Left [CCW]

42 | © Danfoss | December 2022

Displacement limiter mounted on
servo side

Displacement limitation at highpressure side

1

A

2

B

1

B

2

A

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Displacement limiter
Side 2

Side 1

P108 705E

Frame size

Lock nut wrench size and torque

Adjusting screw
wrench sizeinternal hex

Approximate displacement change
per revolution of adjusting screw

055

13 mm 24 N•m [18 lbf•ft]

4 mm

4.2 cm³/rev [0.26 in³/rev]

075

13 mm 24 N•m [18 lbf•ft]

4 mm

5.1 cm³/rev [0.31 in³/rev]

100

13 mm 24 N•m [18 lbf•ft]

4 mm

6.2 cm³/rev [0.38 in³/rev]

130

17 mm 48 N•m [35 lbf•ft]

5 mm

8.8 cm³/rev [0.53 in³/rev]

180

19 mm 125 N•m [92 lbf•ft]

6 mm

12.5 cm³/rev [0.76 in³/rev]

250

19 mm 125 N•m [92 lbf•ft]

6 mm

17.3 cm³/rev [1.06 in³/rev]

Shaft Torque
Shaft torque and spline lubrication
The rated torque is a measure of tooth wear and is the torque level at which a normal spline life of 2x109
shaft revolutions can be expected. The rated torque presumes a regularly maintained minimum level oflubrication via a moly-disulfide grease in order to reduce the coefficient of friction and to restrict thepresence of oxygen at the spline interface. It is also assumed that the mating spline has a minimum
hardness of Rc 55 and full spline depth. The rated torque is proportional to the minimum active spline
length.
Maximum torque ratings are based on torsional fatigue strength considering 100.000 full load reversing
cycles. However, a spline running in oil-flooded environment provides superior oxygen restriction in
addition to contaminant flushing. The rated torque of a flooded spline can increase to that of the
maximum published rating. A flooded spline would be indicative of a pump driven by a pump drive or
plugged into an auxiliary pad of a pump.
Maintaining a spline engagement at least equal to the Pitch Diameter will also maximize spline life. Spline
engagements of less than ¾ Pitch Diameter are subject to high contact stress and spline fretting.
Shaft torque for tapered shafts
The rated torque is based on the contact pressure between the shaft and hub surfaces with poor surface
contact areas. With an increased quality of the contact areas, the contact pressure between the shaft andhub is increased and allows higher torque to be transmitted.
When a key is used for orientation of the hub on the shaft in conjunction with poor quality contact
surfaces, the transmitted torque will drop significantly. This is due to the key carrying the torque, which
limits the shaft torque carrying capability.
Maximum torque rating is based on an ideal contact area of 100 % and the retaining nut properly
torqued. This allows for the highest contact pressure between the shaft and the hub.

© Danfoss | December 2022

BC152886483413en-000911 | 43

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Shaft Availability and Torque Ratings
Alignment between the mating spline's pitch diameters is another critical feature in determining theoperating life of a splined drive connection. Plug-in, or rigid spline drive installations can impose severeradial loads on the shafts. The radial load is a function of the transmitted torque and shaft eccentricity.
Increased spline clearance will not totally alleviate this condition; but, increased spline clearance will
prevent mechanical interference due to misalignment or radial eccentricity between the pitch diametersof the mating splines. Spline life can be maximized if an intermediate coupling is introduced between the
bearing supported splined shafts.
For multiple pump installations, consider load of the entire pump stack. All torques are additive. Include
charge pumps loads when calculating torques.
Through torque diagram

Third
stage

Second stage

First stage

P102 014E
M e 1 for the first pump

M e 2 for thesecond pump

M e Input torqueM e 3 for the next pump

Refer to the outline drawings for shaft dimensions.
Torque required by auxiliary pumps is additive. Ensure requirements don't exceed shaft torque ratings.
Shaft availability and maximum input torque - splined shafts
Option code

Customer end

Frame size/Maximum torque N•m [lbf•ft]
055

075

100

130

180

250
n/a

C6

21T 16/32

1287 [949]1214 [895]1214 [895]

n/a

n/a

C7

23T 16/32

n/a1625 [1218]

1822 [1344]

n/a

n/a

n/a

C8

27T 16/32

n/a

n/a

n/a

2693 [1986]

3125 [2304]

3464 [2554]

G1

25T 20/40

n/a1379 [1017]

1390 [1025]

n/a

n/a

n/a

F1

13T 8/16n/a

n/a

2303 [1700]

2303 [1700]

2303 [1700]

2682 [1978]

S1

14T 12/24

832 [613]

853 [629]

974 [718]

n/a

n/a

n/a

Shaft availability and maximum input torque - tapered shafts
Optioncode

Customer end

Maximum nut torqueSD suppliednut 1

customer
supplied nut

Maximum Torquetransmitted throughjoint

Frame size/Maximum shaft torque N•m[lbf•ft]
055

075

100

130

180

250

2

T8

Taper 1” - lock nut*

190 [140]357 [263]

Must be determined bycustomer

n/a

n/a

n/a

n/a

n/a

n/a

T1

Taper 1.375” - crowned nut**

210 [155]704 [519]

Must be determined bycustomer

1209
[892]

1209
[892]

n/a

n/a

n/a

n/a

44 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Shaft availability and maximum input torque - tapered shafts (continued)
Optioncode

Customer end

Maximum nut torqueSD suppliednut 1

customer
supplied nut

Maximum Torquetransmitted throughjoint

Frame size/Maximum shaft torque N•m[lbf•ft]
055

075

100

130

180

250

2

T6

Taper 1.5” - lock nut*

525 [390]882 [650]

Must be determined bycustomern/a

1755[1294]

1755[1294]

n/a

n/a

n/a

T4

Taper 1.75” - crowned nut**

400 [295]

1391 [1026]

Must be determined bycustomer

n/a

n/a

n/a

2488
[1835]n/a

n/a* without key** with woodruff key

W Warning
1Exceeding the maximum torque value for SD supplied nut may result in nut failure.

W Warning
2Customer may supply a stronger nut. Exceeding the maximum torque value for customer supplied nut
may result in shaft failure.

Tapered Shaft Customer Acknowledgement

W Warning
The customer is responsible for proper analysis, design, and quality of the mating female coupling, key,
and applied torque on the nut. Torque must be transmitted by the taper fit between the shaft andmating coupling, not the key. Failure to properly analyze the nut torque required to create a robust joint
could result in transmitting torque through the key which may lead to premature shaft failure.
The specified torque rating of the tapered shaft is based on the cross-sectional diameter of the shaft
through the keyway and assumes proper clamp and fit between shaft and coupling. Danfoss guarantees
the design and manufactured quality of the tapered shaft.
Danfoss has made provisions for the key in accordance to the ISO specification with the understandingthat the key is solely to assist in the installation of the mating coupling.
Charge Pump
Charge flow is required on all Series 90 pumps applied in closed circuit installations. The charge pumpprovides flow to make up internal leakage, maintain a positive pressure in the main circuit, provide flow
for cooling and filtration, replace any leakage losses from external valving or auxiliary systems, and toprovide flow and pressure for the control system.
Many factors influence the charge flow requirements. These factors include system pressure, pumpspeed, pump swashplate angle, type of fluid, temperature, size of heat exchanger, length and size of
hydraulic lines, control response characteristics, auxiliary flow requirements, hydrostatic motor type, etc.
Unusual application conditions may require a more detailed review of charge pump sizing. Chargepressure must be maintained at a specified level under all operating conditions to prevent damage to thetransmission. Danfoss recommends testing under actual operating conditions to verify this.
Charge pump sizing/selection
In most applications a general guideline is that the charge pump displacement should be at least 10% of
the total displacement of all components in the system. Unusual application conditions may require a© Danfoss | December 2022

BC152886483413en-000911 | 45

Technical Information
Series 90 Axial Piston Pumps
Features and Options
more detailed review of charge flow requirements. Refer to Selection of Drive line Components
BC157786484430, for a detailed procedure.
System features and conditions which may invalidate the 10% guideline include (but are not limited to):• Continuous operation at low input speeds (< 1500 min-1 (rpm))

•
•
•
•
•

High shock loading
Excessively long system lines (> 3m [9.8 ft])
Auxiliary flow requirements
Use of low speed high torque motors
High flushing flow

Contact your Danfoss representative for application assistance if your application includes any of these
conditions.
Available charge pump sizes and speed limits
Code

Charge pump size
cm³ [in³]

Rated speed
min-1 (rpm)B

11 [0.69]

4200

C

14 [0.86]

4200

D

17 [1.03]3900

E

20 [1.20]

3600

F

26 [1.60] (only for 130cc)

3300

H

34 [2.07]3100

J

47 [2.82] (only for 180cc)

2600

K

65 [3.90]

2300

Charge pump flow and power curves
Charge pressure: 20 bar [350 psi]
Case drain: 80 °C (8.2 cSt) 180 °F (53 SUS)
Reservoir temperature: 70 °C (11 cSt) 160 °F (63 SUS)

46 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Features and Options

24

90

21

80

65 c 3m •3.9 i 3
cm 3
n /R
•2
ev
.9 i 3
n /
R
34
ev
cm 3
26
•2
cm
.07
3
•1
in 3
/R
.6
0
ev
in 3
/R
ev

Charge pump output flow

47

70

18

60

15

l/min

US gal/min

50
12
9

ev

/R

ev
3 /R
in
1
3
v
3 •
1.0 3 /Re
3 •
cm
n
m
6i
20
c
8
.
17 3 • 0
cm
14
3

.2

40

in

30

6

20

3

10
0
0

500

1000

2000

3000

Speed min¯¹ (rpm)

4000

4500

P102 012E

v
in

1

/re

•1

.2

in

v
/re
n
3i
v
0
.
r
/e
1
3 •
in
v
m .86
/re
c
n
17 3 • 0 .69 i
m
0
c
3•
14 cm
11

cm

3

•1

3

cm
26

20

2

2

kW

HP

3

v

.60

in
3

•2

.07

47

cm
34

3

4

/re

v
/re

cm 3

4

5

• 2.

65

6

/rev

cm 3

5

9 in

7

• 3.

9 in

/rev

Charge pump power requirements

1

0
0

500

1000

2000

Speed min -1 (rpm)

3000

4000

4500

P102 013E

Speed Sensor
An optional speed sensor for direct measurement of speed is available.
A special magnetic ring is pressed onto the outside diameter of the cylinder block and a Hall effect sensor
is located in the housing. The sensor accepts supply voltage and outputs a digital pulse signal in
response to the speed of the ring. The output changes its high/low state as the north and south poles ofthe permanently magnetized speed ring pass by the face of the sensor. The digital signal is generated at
frequencies suitable for microprocessor based controls. The sensor is available with different connectors.
To use the speed sensor in a PLUS+1 Guide application, download HWD file 10106825 fromwww.Danfoss.com/Plus1. To identify the sensors that are PLUS+1 compliant, please contact your Danfoss
representative.

© Danfoss | December 2022

BC152886483413en-000911 | 47

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Electrical data
Description

Data

Supply voltage (two ranges)

4.5 to 8.5 Vdc Regulated

Maximum operating current

20 mA at 1 Hz and 5 Vdc supply

Required current

12 mA at 5 Vdc (no load)

Output voltage

High state

Supply voltage minus 0.5 Vdc
minimum (no load)

Low state

0.5 Vdc, maximum (no load)

7 to 32 Vdc Battery

Maximum frequency

15 kHzLoad

Ground

15 kHzSupply15 kHz4.5 to 8.5 Vdc

80 Vdc for 2 milliseconds

7 to 32 Vdc

300 Vdc for 2 milliseconds
200 Vdc for 100 milliseconds

4.5 to 8.5 Vdc-15 Vdc continuous

7 to 32 Vdc-32 Vdc continuous

Peak transient voltage

Peak reverse voltage

Environmental data
Description

Data

Operating and storage temperature-40° to 110° C [-40° to 230° F]

For more information on the speed sensor, refer to KPP Pulse Pickup (PPU) Technical Information
11029257.

W Warning
Do not energize the 4.5 to 8.5 Vdc sensor with 12 Vdc battery voltage. Use a regulated power supply. If
you need to energize the sensor with battery voltage, contact your Danfoss representative for a special
sensor.
Pulse frequency

Pulse per revolution

48 | © Danfoss | December 2022

055

075

100

130

180

250

52

58

63

69

77

85

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Features and Options
Connector Pin Assignments
3 pin Deutsch Plug DT Series connector

4 pin Deutsch® Plug DT Series Connector

B
Speed

1
Power +

3
Ground2
Speed

4
Direction

A
Power +C
Ground3523

3525

3 or 4 pin Delphi Connector

A

Power +

B

Speed

C

GroundD

Direction

Packard Weather-Pack
4 pin(Supplied Connector)
Mating Connector
No.: K03379

3524A

4 pin Turck Eurofast connector
Keyway ref

B
Direction

C
Speed

D
Ground12.7 [0.50]
Flats© Danfoss | December 2022

Turck Eurofast Connector
4 pin(Supplied Connector)

A
Power +

Mating Connector
straight
right angle
No.: K14956
No.: K14957

3526

BC152886483413en-000911 | 49

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Frame Size 055
Manual displacement control (MDC), endcap side ports, option 60
View "Z""Y"
9.4[0.37]

93.7[3.69]

149.9[5.90]

12.45 ±0.25[0.49] ±[0.01]

Rotation
CCW[-0.002]0

Ø127 -0.05
Ø[5] [+0.000

17.8[0.70]

2

CW

88.9[3.50]
86.2 [3.39]
Port L2

121.9 [4.80]
port B
117.6 [4.63]
port L1

111.1[4.37]"W"

90.4 [3.56]
port A

133.9 [5.27]

Gauge port M2
system pressure B
9/16-18UNF-2B

Control MDC, option MA

"Z"
"X"

14.2
[0.56]

Approximate
center of gravity

Gauge port M1
system pressure A
9/16-18UNF-2B

243.7 [9.60]
Port SPort L1
case drain
use highest
port as outlet
1-1/16-12UN-2B

120.4 [4.74]
port L2
152.4[6.00]

Approximate
center of gravity

288.8[11.37]

View "Y"43.7[1.72]

Ø14.27[Ø 0.562]

57.25[2.254]

(4x)

114.5
[4.50]

Port L2
case drain
1-1/16-12UN-2B(2x)

View "X"

Gauge port M4
servo pressure
7/16-20UNF-2B

Charge pressure
relief valve

Multifunction
valve

57.15 [2.25]

27.76[1.093]Gauge port M3
charge pressure
9/16-18UNF-2B

Ports A and B
1.00 - 6000 psi
split flange boss
per SAE J518
(Code 62)
7/16-14UNC-2B
except 21 [0.83]
minimum full thread

Gauge port M5
Servo pressure
7/16-20UNF-2B

72.9[2.87]
168.9[6.65]

82.6[3.25]

External charge plug
1 5/16-12 UNF
Multifunction
valvePort S: Charge pump inlet
1-5/16-12UN-2B

58.4[2.30]

231.9[9.13]

Manual Displacement Control Handle
Dimensions
Torque applied to control handle shaft
not to exceed 17 N•m [150 lbf•in]

B
Neutralposition

A

28°
28°
um minimum
minim

Maximum
displacement

Maximum
displacement

R 50.8±0.3[R 2.0±0.01]

R 25.4±0.3[R 1.0±0.01]

P102 042

Ø 6.73±0.13 2x[Ø 0.265±0.005]

50 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Manual displacement control (MDC) endcap twin ports, option 80
Control MDC, option MA"Y"

Gauge port M2
system pressure B
9/16-18UNF-2B
Port S: charge
pump inlet
1-5/16-12UN-2B

2

27.76
[1.093]57.9[2.28]

57.9[2.28]B

A

Ports A and B
1 – 6000 psi
split flange boss
per SAE J518
(Code 62)
7/16-14UNC-2B
21 [0.83]
minimum full thread

57.15[2.25]

Gauge port M1: system pressure A
9/16-18UNF-2B
232.2[9.14]
247.1[9.73]

85.1 [3.35]
port S

88.9[3.54]

View "Y"P102 043© Danfoss | December 2022

BC152886483413en-000911 | 51

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad – options AB, BC, CD, BB
Coupling spline data:
Pitch diameter = 14.288 [0.5625]
Pressure angle = 30°
Number of teeth = 9
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 37.13 [1.46]

View "X"+ 0.130[+0.005][- 0.000]

SAE A, option AB

106.375[4.188]

Ø 82.6[Ø 3.252]

"X"

2

15.13
[0.59]For O-ringØ 82.22 x 2.62
[Ø 3.237 x 0.103]

316.6[12.46]4 threads
3/8-16UNC-2B
22.8 [0.90] deep
330.4
[13.01]

Coupling spline data:
Pitch diameter = 20.6375 [0.8125]
Pressure angle = 30°
Number of teeth = 13
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 29.51 [1.16]

View "X"SAE B, option BC[- 0.000]

2For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

146[5.75]+ 0.13

Ø 101.65 0[Ø 4.002] [+0.005]

"X"

17.66
[0.70]

311.5[12.26]4 threads
1/2-13UNC-2B
22.0[0.87] deep

View "X"SAE C, option CD[- 0.000]2
114.5[4.51]+ 0.13

Ø 127.03 0[Ø 5.00] [+0.005]

For O-ringØ 120.32 x 2.62
[Ø 4.737 x 0.103]

146[5.75]

329[12.95]

Coupling spline data:
Pitch diameter = 29.6333 [1.167]
Pressure angle = 30°
Number of teeth = 14
Pitch = 12/24
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 18.97 [0.747]"X"

106.375[4.188]30.73[1.21]

52 | © Danfoss | December 2022

314
[12.36]

6 threads
1/2-13UNC-2B
22 (0.87) deep331
[13.03]

P102 044

114.5[4.51]
181[7.13]BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad – options AB, BC, CD, BB
Coupling spline data:
Pitch diameter = 23.8125 [0.9375]
Pressure angle = 30°
Number of teeth = 15
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 24.43 [0.96][- 0.000]2
146[5.75]+ 0.13

Ø 101.65 0[Ø 4.002] [+0.005]"X"

View "X"SAE B-B, option BB

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

20.75[0.82]

311.5[12.26]4 threads
1/2-13UNC-2B
22 [0.87] deep146
[5.75]

329[12.95]

P102 045

Shaft dimensions
Option S1 ISO 3019-1
Flange Outer Diameter 32mm -4mm (SAE C, 14 tooth)
7.9[0.311]

Coupling must not protude beyond this surface
47.6[1.875]* 27.97.9[0.311]

Coupling must not protude beyond this surface
47.6[1.875]

Shaft spline data:
Pitch diameter = 29.6333 [1.167]
Pressure angle = 30°
Number of teeth = 14
Pitch = 12/24
ANSI B92.1
Fillet root side fit* 31.2[1.23]

29.633[1.1667]

Shaft spline data:
Pitch diameter = 33.338 [1.3125]
Pressure angle = 30°
Number of teeth = 21
Pitch = 16/32
ANSI B92.1
Fillet root side fit

34.42[1.36]
28.7[1.13]

24.9[0.98]

31.14[1.23][1.10]

Option C6 ISO 3019-1
Flange Outer Diameter 32mm -4mm (SAE C, 21 tooth)* Minimum active spline length
for the specified torque ratings
6.6[0.26]

66.9[2.63]

33.338[1.3125]
P108 502E

Option T1 ISO 38.3
Diameter 34.9 mm Taper 1:8
Cone flange must not protude beyond this point
Woodruff key [0.375 x 1.5]

47.8
[1.88]
62.02[2.44]

Wrench size 38 mm
Refer to (torque - tapered shafts) tablepage 42 for torque information
Shaft/cone 1:8 SAE standard J501
P108 503E© Danfoss | December 2022

BC152886483413en-000911 | 53

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Frame Size 075
Manual Displacement Control (MDC) Endcap Side Ports, Option 60
View "Z""Y"

Control MDC, option MA

110.7[4.36]"W"

139.7[5.50]

155.7[6.13]

7.9[0.31]

Rotation
CCW

CW

262.6 [10.34]
Port SPort L1
Case drain
use highest
port as outlet
1-1/16-12UN-2B

141.7 [5.58]
Port L2

12.45 ±0.25[0.49] [±0.01]

"Z"
+0.25

40.6
[1.60][-0.007]57.25[2.254]

Ø 14.27 -0.18[Ø 0.562] [+0.010]

155.7[6.13]

Approximate
center of gravity

306,1(12.05)View "Y"(4x)

Port L2
case drain
1-1/16-12UN-2B

114.5[4.50](2x)

View "X"

Gauge port M4
servo pressure
9/16-18UNF-2B

Charge pressure
relief valve
7.9 [0.31]

M4

M10

41.6
[1.64]

27.76[1.093]M3

Gauge port M3
charge pressure
9/16-18UNF-2B

M2

Multifunction
valve

57.15 [2.25]

M1

External charge plug
1 5/16-12 UNF

Ports A and B
1 – 6000 psi
split flange boss
per SAE J518
(Code 62)
7/16-14UNC-2B
20 [0.79]
minimum full thread

Gauge port M5
servo pressure
9/16-18UNF-2B

Multifunction
valvePort S: charge pump inlet
1-5/16-12UN-2B

81.3[3.20]
172.2[6.78]

84.0[3.31]

Approximate
center of gravity

14.2[0.56]

B

Gauge port M1
system pressure A
9/16-18UNF-2B

M5

"X"

93.7
[3.69]
91.7 [3.61]
port L2

94.5 [3.72]
port A+0

3.8[0.15]

2

Ø 127 -0.05+0[Ø 5 -0.002]

129 [5.08]
port B

124.2 [4.89]
port L1

99.3[3.91]

9.4[0.37]

Gauge port M2
System pressure B
9/16-18UNF-2B

A
65[2.56]

248.2[9.77]

Manual displacement control handle
dimensions
Torque applied to control handle shaft
not to exceed 17 N•m [150 lbf•in]

B
Neutralposition

A

28°
28°
um minimum
minim

Maximum
displacement

Maximum
displacementØ 6.33[Ø 0.249]

R 50.8±0.3[R 2.0±0.01]
12.70[0.50]

R 25.4±0.3[R 1.0±0.01]

4.78[0.188]41.67[1.64]

Ø 6.73±0.13 3x[Ø 0.265±0.005]

54 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Manual Displacement Control (MDC), endcap twin ports, option 80"Y"

Gauge port M2
system pressure B
9/16-18UNF-2B

Control MDC, option MA

Port S: charge
pump inlet
1-5/16-12UN-2B

2

27.76
[1.093]61[2.402]99[3.90]

61[2.402]

B

Ports A and B
1 - 6000 psi
split flange boss
per SAE J518
(Code 62)
7/16-14UNC-2B
except 20.8 [0.82]
minimum full thread

A

57.15
[2.25]

Gauge port M1: system pressure A
9/16-18UNF-2B
242.3[9.54]
248[9.76]

92[3.62]

View "Y"P102 047© Danfoss | December 2022

BC152886483413en-000911 | 55

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad – Options AB, BC, CD, BB
Coupling spline data:
Pitch diameter = 14.288 [0.5625]
Pressure angle = 30°
Number of teeth = 9
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 37.13 [1.46]

View "X"SAE A, option ABB

M4+ 0.130[+0.005][- 0.000]

M2

M5
M1

106.375[4.188]M10

Ø 82.6[Ø 3.252]

M3

"X"

2

A
15.13
[0.59]

333.93[13.14]4 threads
3/8-16UNC-2B
22.8 [0.90] deep

106.375[4.188]347.8[13.69]

Coupling spline data:
Pitch diameter = 20.6375 [0.8125]
Pressure angle = 30°
Number of teeth = 13
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 29.51 [1.16]

View "X"SAE B, option BC

B

M4

M2

M5

For O-ringØ 82.22 x 2.62
[Ø 3.237 x 0.103]

146[5.75]+ 0.13

M1

M3

M10

[- 0.000]

2

Ø 101.65 0[Ø 4.002] [+0.005]

"X"

17.66
[0.70]

328.9[12.95]A

4 threads
1/2-13UNC-2B
22 [0.87] deep146
[5.75]

346.5[13.64]

Coupling spline data:
Pitch diameter = 29.6333 [1.167]
Pressure angle = 30°
Number of teeth = 14
Pitch = 12/24
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 18.97 [0.747]

View "X"SAE C, option CD

B

M4

M2

M5

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

114.5[4.51]+ 0.13

M1

M3

M10

[- 0.000]

2Ø 127.03 0[Ø 5.001] [+0.005]"X"

For O-ringØ 120.32 x 2.62
[Ø 4.737 x 0.103]

30.73[1.21]

56 | © Danfoss | December 2022

331.4
[13.05]6 threads
1/2-13UNC-2B
22 [0.87] deep
348.4
[13.72]A
114.5[4.51]
181[7.13]
P102 048

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad – options AB, BC, CD, BB
Coupling spline data:
Pitch diameter = 23.8125 [0.9375]
Pressure angle = 30°
Number of teeth = 15
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 24.43 [0.96]

View "X"SAE B-B, option BB

B

M4

M2

M5
146
[5.75]+ 0.13

M1

M3

M10

[- 0.000]

2

Ø 101. 65 0[Ø 4.002] [+0.005]"X"

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

22.75[0.896]328.9[12.95]A

4 threads
1/2-13UNC-2B
22 [0.87] deep146
[5.75]

346.5[13.64]

P102 049

Frame Size 075 NFPE Options FK, FL, FM, FN
Integrated NFPE control, endcap side ports
System pressure B
Gage port M2
9/16-18UNF-2B"C"
306[12.043]

Case drain L1
1-1/16-12UN-2B"A"

Connector
AMP Junior Typ A

54[2.118]View "B"65[2.543]14[0.56]

95[3.755]"D"

System pressure A
Gage port M1
9/16-18UNF-2B
Charge pump inlet M10
9/16-18UNF-2B

156[6.142]
Approx centerof gravity

Ø14.3 +0.25-0.13[0.565][+0.10][-0.005]

91.7[3.611]

94.5[3.722]57.25[2.254]4[0.157]124.2[4.89]
to case drain L1

"B"

57.25
[2.254]

Case drain L2
1-1/16-12UN-2B
P104 324E"E"© Danfoss | December 2022

BC152886483413en-000911 | 57

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
View "C"View "A"
Charge pressure
relief valve

Multifunction valve

110.8[4.362]

Split flange boss (2x)
DN 25 TypII 40MPa series
per ISO 6162
Thread: 0.4375-14UNC-2B[7/16-14UNC-2B]
0.83 min.
full thread depth84[3.31]

27.76[1.093]Connector
Deutsch: DTM 06-3 S

221 max.
[8.701]Gage port M4
Servo pressure
9/16-18UNF-2B

57.15[2.250]248[9.772]172[6.780]Multifunction valve

Gage port M5
Servo pressure
9/16-18UNF-2B

Charge pump inlet S
1-5/16-12UN-2B
P104325E

Integrated NFPE control, endcap side ports (continued)
141[5.557]

View "D"Charge pr essur eGage p ort M3
9/16-18UNF-2B

Optional: Part for speed pick up
9/16-18UNF-2B
253[9.962]58 | © Danfoss | December 2022

P104 326E

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
View "E"
262.4[10.332]

39.4[1.551]65[2.558]141.7[5.581]

P104 327E

Integrated NFPE control, endcap twin ports"C"
306[12.043]

System pressure B
Gage port M2
9/16-18UNF-2B

Case drain L1
1-1/16-12UN-2B

Connector
AMP Junior Typ A

27.76[1.093]

4[0.157]61[2.402]57.15[2.25]

System pressure A
Gage port M1
9/16-18UNF-2B

156[6.142]242[9.54]
248[9.75]

Approx centerof gravity"E"© Danfoss | December 2022"B"

61
[2.402]

Charge pump inlet
1-5/16-12UN-2B
Split flange boss (2x)
DN 25 TypII 40MPa series
per ISO 6162
Thread: 0.4375-14UNC-2B[7/16-14UNC-2B]
0.83 min.
full thread depth

14[0.56]
12.45±0.25[0.490±0.010]
7.95[0.313]
R0.8 max.
[0.03]

124.2[4.89]
99.0[3.90]"A"

54[2.118]

P104 328E

BC152886483413en-000911 | 59

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
View "C"

Connec tor
Deutsch: DTM 06-3 S

221 max.
[8.701]Gage p ort M4
Servo pressur e
9/16-18UNF-2B

172[6.780]Gage p ort M5
Servo pressur e
9/16-18UNF-2B

P104 329E

Shaft dimensions
7.9[0.311]

Coupling must not protude beyond this surface
X

V

U

W

P108 504E

60 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Option T6

89[3.504]9.1[0.358]Cone flange must not protude beyond this point

32.1[1.264]

Wrench size 36 mm
Refer to (torque - tapered shafts) tablepage 42 for torque information
M24 x 1.5

38.1
[1.5]

Self lock nut DIN 985
Washer DIN EN ISO 7089-300
Shaft/cone 1:8 SAE standard J501

P108 579E

Shaft dimensions
Undercu Fullt
SplineDiamete
r

Major
Pitch
Diamet Diamet
erer

Lengt Number
h
of
Teeth

Pitch Pressur Spline
e
Angle

Shaft
Option

T

U*

V

W

X

C7

31.8
[1.25]

34.8[1.37]

37.59[1.48]

36.51347.6
23[1.4375] [1.875
]

16/3
2

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

S1

24.9
[0.98]

27.9[1.10]

31.14[1.23]

29.63347.6
14[1.1667] [1.875
]

112/
24

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

C6

28.7
[1.13]

31.2[1.23]

34.42[1.36]

33.3375
1.312547.6
21[1.875
]

16/3
2

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

G1

28.5
[1.12]

34.6[1.36]

32.93
[1.3]

31.75
[1.25]

47.6
25[1.875
]

20/4
0

30
ANSI
Degrees B92.1

Side fit, Fillet
Root* Minimum active spline length for the specified torque ratings© Danfoss | December 2022

BC152886483413en-000911 | 61

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Frame Size 100
Manual Displacement Control (MDC), endcap side ports, option 60
View "Z"
9.4[0.37]

108.5[4.27]

164.2[6.46]

Approximate
center of gravity

161 [6.34]
Port L2

Port L1
case drain
use highest
port as outlet
1-1/16-12UN-2B[-0.002]14.2[0.56]

42[1.65]

Ø 14.27[Ø 0.562]

180.3[7.10]

Port L2(2x) case drain
1-1/16-12UN-2B
114.5
(2x)
[4.508]57.25[2.254]

Approximate
center of gravity

339.0[13.35]View "Y"View "X"

Coupling may not
protrude beyond
this surface

Gauge port M4
Servo pressure
9/16-18UNF-2B

Charge pressure
relief valve

7.9 [0.31]

M4
Multifunction
valve

57.15 [2.25]

27.76[1.093]M3

Gauge port M3
charge pressure
9/16-18UNF-2B

M10

288 [11.34]
port S"Z"

M2

12.45 ±0.25[0.49] [±0.01]

CW

102[4.02]
100.37 [3.95]
port L2

99.1 [3.90]
port A0

20.3[0.80]

CCW

Ø 127 -0.05[Ø 5.000] [+0.000]

143.3 [5.64]
port B
139.1 [5.48]
port L1

Rotation

2

Gauge port M1
system pressure A
9/16-18UNF-2B"W"

Coupling may not
protrude beyond
this surface
7.9[0.31]"X"

119.6[4.71]

B

External charge plug
1 5/16-12 UNF

Ports A and B
1.00 - 6000 psi
split flange boss
per SAE J518
(Code 62)
7/16-14UNC-2B
except 21 [0.83]
minimum full thread

Gauge port M5
servo pressure
9/16-18UNF-2B

Multifunction
valve

87.3
[3.44]

Port S: charge pump inlet
1-5/8-12UN-2B

204.6[8.06]

M1

148.7 [5.85]

Control MDC, option MA

M5

Gauge port M2
system pressure B
9/16-18UNF-2B

89.7[3.53]"Y"

A
66[2.60]

277.7[10.93]Manual displacement control handle
dimensions
Torque applied to control handle shaft
not to exceed 17 Nm [150 lbf•in]"B"
Neutralposition

"A"

30°
30°
um minimum
minim

Maximum
displacement

Maximum
displacement

R 50.8±0.3[R 2.0±0.01]

Ø 6.33[Ø 0.249]12.70[0.50]

R 25.4±0.3[R 1.0±0.01]

4.78[0.188]41.67[1.64]

Ø 6.73±0.13
3x[Ø 0.265±0.005]
P102 050

62 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Manual Displacement Control (MDC), endcap twin ports, option 80"Y"

Gauge port M2
system pressure B
9/16-18UNF-2B
Port S: charge
pump inlet
1-5/8-12UN-2B

B

27.76
[1.093]66.8[2.63]

66.8[2.63]

2

A

Ports A and B
1 - 6000 psi
split flange boss
per SAE J518
(Code 62)
7/16-14UNC-2B
21 [0.83]
minimum full thread

57.15[2.25]

Gauge port M1: system pressure A
9/16-18UNF-2B
277.9[10.94]280.5[11.04]99.8 [3.93]
port S

108[4.25]

View "Y"P102 051© Danfoss | December 2022

BC152886483413en-000911 | 63

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pads, SAE AB, SAE BC, SAE CD
COUPLING SPLINE DATA:
Pitch Dia = 14,288 (.5625)
Pressure Angle = 30
Number of teeth = 9
Pitch = 16/32
ANSI B92.1-1970, Class 6,
Fillet Root Side Fit
Length of spline = 37,13 (1.46)

View "X"B

M4+ 0,130(+.005)(- .000)

M5

M1

106,375(4.188)M10

ø82,6(3.252 Dia)

2
M3

"X"

M2

SAE A, Option AB

15,13
(.60)

366,02(14.41)

379,69(14.95)

COUPLING SPLINE DATA:
Pitch Dia = 20,6375 (.8125)
Pressure Angle = 30
Number of teeth = 13
Pitch = 16/32
ANSI B92.1-1970, Class 6,
Fillet Root Side Fit
Length of spline = 29,51 (1.16)

View "X"M4

146(5.75)

M1

M3

M10

(- .000)2

ø101,65 0(4.002 Dia)(+.005)+ 0,13M2

SAE B, Option BC

B"X"

106,375(4.188)

M5

for O-Ringø82.22 x 2.62
(3.237 Dia x 0.103)

A

4 Threads
3/8-16UNC-2B
17 (.67) deep

17,66
(.70)

360,9
(14.21)

View "X"M2

SAE C, Option CD

B

M4

114,5
(4.51)

M1

M3

M10

(- .000)2

ø127,03 0(5.001 Dia)(+.005)+ 0,13146(5.75)

378,3(14.89)COUPLING SPLINE DATA:
Pitch Dia = 29,6333 (1.167)
Pressure Angle = 30
Number of teeth = 14
Pitch = 12/24
ANSI B92.1-1970, Class 6,
Fillet Root Side Fit
Length of spline = 18,97 (.747)"X"A

4 Threads
1/2-13UNC-2B
22 (.87) deep

M5

for O-Ringø94.92 x 2.62
(3.737 Dia x 0.103)

for O-Ringø120.32 x 2.62
(4.737 Dia x 0.103)

30,73(1.21)

64 | © Danfoss | December 2022

363,47(14.31)

6 Threads
1/2-13UNC-2B
22 (.87) deep380,27(14.97)

A
114,5(4.51)
181(7.13)

P106 645E

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad, SAE BB
COUPLING SPLINE DATA:
Pitch Dia = 23,8125 (.9375)
Pressure Angle = 30
Number of teeth = 15
Pitch = 16/32
ANSI B92.1-1970, Class 6,
Fillet Root Side Fit
Length of spline = 24,43 (.96)

M2

M4

146
(5.75)

M1

M3

M10

(- .000)2

ø101,65 0(4.002 Dia)(+.005)+ 0,13B

M5"X"

View "X"SAE B-B, Option BB

for O-Ringø94.92 x 2.62
(3.737 Dia x 0.103)

22,75(.896)

360,9(14.21)4 Threads
1/2-13UNC-2B
22 (.87) deep378,3
(14.89)A
146(5.75)
P106 646E

Shaft dimensions
7.9[0.311]

Coupling must not protude beyond this surface

X

V

U

W

P108 505E© Danfoss | December 2022

BC152886483413en-000911 | 65

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Option T6

89[3.504]9.54[0.376]47.8[1.882]

Cone flange must not protude beyond this point

Wrench size 36 mm
Refer to (torque - tapered shafts) tablepage 42 for torque information
M24 x 1.5

38.1
[1.5]

Self lock nut DIN 985

Shaft/cone 1:8 SAE standard J501
P108 509E

Shaft dimensions
Undercu Fullt
SplineDiamete
r

Major
Pitch
Diamet Diamet
erer

Lengt Number
h
of
Teeth

Shaft
Option

T

U*

V

W

X

C7

32.3
[1.27]

38.9[1.53]

37.59[1.48]

36.51347.6
23[1.4375] [1.875
]

16/3
2

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

F1

34.5
[1.36]

49.5[1.95]

43.94[1.73]

41.275[1.825]66.7
13[2.625
]

8/16

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

S1

24.9
[0.98]

30.5[1.20]

31.14
29.63447.6
14[1.2258] [1.1667] [1.875
]

12/2
4

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

30
ANSI
Degrees B92.1

Side fit, Fillet
Root

C6

Pitch Pressur Splinee
Angle* Minimum active spline length for the specified torque ratings

66 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Frame Size 130
Manual Displacement Control (MDC), end cap twin ports, option 80
View "Z""Y"
9.4[0.37]

110.5[4.35]"W"

Port S: charge
pump inlet
1-5/8-12UN-2B

184.5[7.26][0.49] ±[0.01]

2

Rotation

15[0.591]

CCW

0

31.75
[1.25]

77[3.03]A"X"
Ports A and B
1- 1/4 - 6000 psi
split flange boss
per SAE J518
(Code 62)
1/2-13UNC-2B
23 [0.906]
minimum full thread

66.68[2.63]

166 [6.54]
port L2
Approximate
center of gravity
300[11.81]Gauge port M1
System pressure A
9/16-18UNF-2B

View "Y"290[11.42]16[0.63]

R0.8 max.
[0.03]

48.8[1.92]

Ø 20.6[Ø 0.81]"Z"

185[7.28]

CW

111.6[4.39]
100 [3.94]
port L2

B[-0.002]147.1 [5.79]
port L177[3.03]

12.45 ±0.25

Ø152.4 -0.0
Ø[6] [+0.000

168.5[6.63]

Gauge port M2
System pressure B
9/16-18UNF-2B

Approximate
center of gravity

80.8[3.181]

Port L2(2x) case drain
1-5/16-12UN-2B
161.6
(2x)
[6.36]

View "X"

Gauge port M4
servo pressure
9/16-18UNF-2B

Charge pressure
relief valve

7.9 [0.31]

M5

B

M2

M4

Multifunction
valve

111
[4.37]

48[1.9]

Gauge port M3
charge pressure
9/16-18UNF-2B

A

External charge plug
1 5/16-12 UNF
Gauge port M5
servo pressure
9/16-18UNF-2B

Port L1
case drain
use highest
port as outlet
1-5/16-12UN-2B

101.5[4.00]

Multifunction
valve

M1

209.3
[8.24]
370[14.58]Manual displacement control handle
dimensions
Torque applied to control handle shaft
not to exceed 17 N•m [150 lbf•in]"B"
Neutralposition

"A"

30°
30°
um minimum
minim

Maximum
displacement

Maximum
displacement

R 50.8[R 2.00]

R 25.4[R 1.00]
Ø 6.732x[Ø 0.265]© Danfoss | December 2022

P102 052

BC152886483413en-000911 | 67

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad - options AB, BC, CD, DE, BB
View "X"

Coupling spline data:
Pitch diameter = 14.288 [0.5625]
Pressure angle = 30°
Number of teeth = 9
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 22.4 [0.88]

SAE A, option AB
M4

M5
M2

A

"X"

106.375[4.188]

Ø 82.6[Ø 3.252]B+ 0.130[+0.005][- 0.000]2

15.6[0.61]

400.89[15.78]M1

4 threads
3/8-16UNC-2B
17.8 [0.70] deep

106.375[4.188]414.56[16.32]

Coupling spline data:
Pitch diameter = 20.6375 [0.8125]
Pressure angle = 30°
Number of teeth = 13
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 28.77 [1.1])

View "X"SAE B, option BC
M4

M5
M2

For O-ringØ 82.22 x 2.62
[3.237 diameter x 0.103]

A

"X"

146
[5.75]+ 0.13

Ø 101.65 - 0.00
[Ø 4.002] [+0.005][- 0.000]

B

2

M1
18.2
[0.72]

408[16.06]425.65[16.76]

View "X"

Coupling spline data:
Pitch diameter = 29.6333 [1.167]
Pressure Angle = 30°
Number of teeth = 14
Pitch = 12/24
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 29.97 [1.18]

SAE C, option CD
M4

M2

B

2

114.5
[4.51]

A+ 0.13[-0.000]Ø 127.03
0[Ø 5.001] [+0.005]

"X"

146
[5.75]M5

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

4 threads
1/2-13UNC-2B
22 [0.87] deep

M1
For O-ringØ120.32 x 2.62
[Ø 4.737 x 0.103]

31.4[1.24]

68 | © Danfoss | December 2022

411.05[16.18]

6 threads
1/2-13UNC-2B
22 [0.87] deep427.75[16.84]114.5[4.51]
181[7.13]BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad - options AB, BC, CD, DE, BB
View "X"

Coupling spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30°
Number of teeth = 13
Pitch = 8/16
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline =25.22 [0.993]

SAE D, option DE
M4

M5
M2

A

"X"

161.6
[6.36]+ 0.13

Ø 152.45 - 0.00
[Ø 6.002] [+0.005][- 0.000]

B

2

50.84
[2.00]

415.62[16.36]161.6[6.36]

439.22[17.29]

Coupling spline data:
Pitch diameter = 23.8125 [0.9375]
Pressure angle = 30°
Number of teeth = 15
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 24.59 [0.96]

View "X"SAE B-B, option BB
M4

M5
M2

For O-ringØ 153 x 3.0[Ø 6.02 x 0.118]

M1

4 threads
3/4-10UNC-2B
41 [1.6] deep146
[5.75]

A+ 0.13

Ø 101.65 - 0.00
[Ø 4.002] [+0.005]"X"[- 0.000]

B2

M1For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

23.3[0.92]

408[16.06]4 threads
1/2-13UNC-2B
22 [0.87] deep146
[5.75]

425.65[16.76]

P102 054

Shaft dimensions
Option C8 ISO 3019-1(27 tooth)
Coupling must not protude beyond this surface

7.9[0.311]66.7[2.625]

Coupling must not protude beyond this surface
66.7[2.625]

Shaft spline data:
Pitch diameter = 42.862 [1.687]
Pressure angle = 30°
Number of teeth = 27
Pitch = 16/32
ANSI B92.1
Fillet root side fit* 43.89* 31.2[1.23]

42.865[1.6875]© Danfoss | December 2022

28.7
[1.13]

37.0[1.46]

43.89[1.73][1.73]* Minimum active spline length
for the specified torque ratings

Shaft spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30°
Number of teeth = 13
Pitch = 8/16
ANSI B92.1
Fillet root side fit

43.89[1.73]

7.9[0.311]

Option F1 ISO 3019-1(13 tooth)41.275[1.625]

BC152886483413en-000911 | 69

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Option T4
11.05[0.44]

Cone flange must not protude beyond this surface
75.95[2.99]
28.45[1.12]

22.1[0.87]

11.06 x 63.5
[0.4355 x 2.75]
Woodruff key

15.88[0.63]

44.45[1.75]

Gauge
Diameter

41.275[1.625]

Wrench size 46 mm
Refer to (torque - tapered shafts) tablepage 42 for torque information

P108 510E

70 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Frame Size 180
Manual Displacement Control (MDC), end cap twin ports, option 80
View "Z""Y"
9.4[0.37]

156.42[6.16]

R 0.8 max.
[0.03]

66.68[2.63]

186 [7.32]
port L2

Approximate
center of gravity
326[12.83]Gauge port M1
system pressure A
9/16-18UNF-2B

View "Y"321[12.64]20[0.79]

201.5[7.93][-0.002]cw

112.25[4.42]

143[5.63]

ccw"Z"
Ø 20.6[Ø 0.81]200[7.87]

Approximate
center of gravity

56[2.20]
112.25[4.42]

Port L2(2x) case drain
1-5/8-12UN-2B
224.5
(2x)
[8.84]
CPRV

View "X"

Gauge port M4
servo pressure
9/16-18UNF-2B"W"

142 [5.59]
port L2

Ports A and B
1- 1/4 -6000 psi
split flange boss
per SAE J518
(Code 62)
1/2-13UNC-2B
23 [0.906]
minimum full thread

31.75[1.25]"X"93[3.66]

093[3.66]

12[0.472]15.65 ±0.25[0.62 ±0.011]

Ø165.1 -0.05
Ø[6.5] [+0.000

20[0.79]

Port S: charge
pump inlet
1-5/8-12UN-2B

181 [7.13]
port L1

204[8.03]

Gauge port M2
System pressure B
9/16-18UNF-2B

7.9 [0.31]

Multifunction
valve

138
[5.43]

48[1.9]

Gauge port M3
charge pressure
9/16-18UNF-2B
External charge plug
1 5/8-12 UNF

Port L1
case drain
use highest
port as outlet
1-5/8-12UN-2B

Gauge port M5
servo pressure
9/16-18UNF-2B

108[4.25]

Multifunction
valve

228
[8.97]

View "W"398[15.67]Manual displacement control handle
dimensions
Torque applied to control handle shaft
not to exceed 17 Nm [150 lbf •in]R 50.8[R 2.0]

30

"A"

minim

"B"
Null
position30
um minimum

Maximum
displacement

Maximum
displacement

R 25.4[R 1.0]Ø 6.732x[Ø 0.265]211.28[8.32]

Port N (optional), speed
pick-up 9/16-18UNF-2B
P102 057© Danfoss | December 2022

BC152886483413en-000911 | 71

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad - options AB, BC, CD, DE, EF, EG, BB
Coupling spline data:
Pitch diameter = 14.288 [0.5625]
Pressure angle = 30°
Number of teeth = 9
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 17.8 [0.70][- 0.000]

106.375[4.188]+ 0.13For O-ringØ 82.22 x 2.62
[Ø 3.237 x 0.103]

15[0.59]

429.3[16.90]4 threads
3/8-16UNC-2B
17.8 [0.70] deep

View "X"[- 0.000]

SAE B, option BC

146[5.75]+ 0.13

Ø 101.65 - 0.00
[Ø 4.002] [+0.005]

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

17.5[0.69]

436.4[17.18]4 threads
1/2-13UNC-2B
22 [0.87] deep146
[5.75]

454.1[17.88]

Coupling spline data:
Pitch diameter = 29.6333 [1.167]
Pressure angle = 30°
Number of teeth = 14
Pitch = 12/24
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 22.1 [0.87]

View "X"[- 0.000]

SAE C, option CD

For O-ringØ 120.32 x 2.62
[Ø 4.737 x 0.103]

114.5[4.51]+ 0.13

Ø 127.03 - 0.00
[Ø 5.001] [+0.005]"X"

106.375[4.188]442.9[17.44]

Coupling spline data:
Pitch diameter = 20.6375 [0.8125]
Pressure angle = 30°
Number of teeth = 13
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 29.5 [1.16]"X"

View "X"Ø 82.6- 0.00[Ø 3.252] [+0.005]"X"

SAE A, option AB

30.5[1.20]

72 | © Danfoss | December 2022

439.4
[17.30]

6 threads
1/2-13UNC-2B
22 [0.87] deep
456.1
[17.96]

P102 058

114.5[4.51]
181[7.13]BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad - options AB, BC, CD, DE, EF, EG, BB
Coupling spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30°
Number of teeth = 13
Pitch = 8/16
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 25.9 [1.02][- 0.000]161]6[6.36]+ 0.13For O-ringØ 153 x 3.0[Ø 6.02 x 0.118]

49.9[1.96]

448.1[17.64]

Coupling spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30°
Number of teeth = 13
Pitch = 8/16
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 25.9 [1.02]

464.8[18.30]161.6[6.36]

View "X"[- 0.000]

SAE E, option EF

224.5[8.84]
49.9[1.96]+ 0.13For O-ringØ 158.42 x 2.62
[6.24 x 0.10]

448.1[17.64]

Coupling spline data:
Pitch diameter = 42.862 [1.687]
Pressure angle = 30°
Number of teeth = 27
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 28.5 [1.12]

4 threads
3/4-10UNC-2B
41 [1.61] deep

224.5
[8.84]

473.1[18.63]

View "X"[- 0.000]

SAE E, option EG

For O-ringØ 164.77 x 2.62
[Ø 6.48 x 0.10]

224.5[8.84]+ 0.13

Ø 165.15 - 0.00
[Ø 6.501] [+0.005]"X"

4 threads
3/4-10UNC-2B
41 [1.61] deep

Ø 165.15 - 0.00
[Ø 6.501] [+0.005]"X"

View "X"Ø152.45 - 0.00
[Ø 6.002] [+0.005]"X"

SAE D, option DE

46.5[1.83]© Danfoss | December 2022

448.1
[17.64]4 threads
3/4-10UNC-2B
41 [1.61] deep
473.1
[18.63]224.5[8.84]

P102 059

BC152886483413en-000911 | 73

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad - options AB, BC, CD, DE, EF, EG, BB
Coupling spline data:
Pitch diameter = 23.8125 [0.9375]
Pressure angle = 30°
Number of teeth = 15
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 24.49 [0.96]+ 0.13

Ø 101.65 - 0.00
[Ø 4.002] [+0.005]

146[5.75]"X"

View "X"SAE B-B, option BB[- 0.000]For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

22.6[0.89]

4 threads
1/2-13UNC-2B
22 [0.87] deep

436.4
[17.18]146[5.75]
P102 060

454.1[17.88]

Shaft dimensions
8.3[0.33]

Coupling must not protude beyond this surface

66.68[2.63]T

V

U

W

P108 507E

Shaft dimensions
Undercut Full
Diameter Spline

Major
Pitch
Number
Diameter Diameter of
Teeth

Pitch

Pressure Spline
Angle

Shaft Option T

U*

V

W

C8

39
[1.54]

42.5[1.67]

44.35[1.75]

42.8625[1.8450]27

16/32 30
Degrees

ANSI
B92.1

Side fit, Fillet
Root

F1

34.04
[1.34]

42.5[1.67]

43.94[1.73]

41.275[1.825]

13

8/16

ANSI
B92.1

Side fit, Fillet
Root

30
Degrees* Minimum active spline length for the specified torque ratings

74 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Frame Size 250
Manual Displacement Control (MDC), end cap twin ports, option 80
View "Z""W"

2

B

15.65 ±0.25[0.62 ±0.011]

186 [7.32]
port L2

79.38[3.13]

Approximate
center of gravity
341[13.43]

Ports A and B
1- 1/2 - 6000 psi
split flange boss
per SAE J518 (Code 62)
5/8-11UNC-2B,
25 [0.98] minimum
full thread

View "Y"

331
[13]

20
[0.79]

143[5.63]"Z"

142 [5.59]
port L2

R 0.8 max.
[0.03]

36.5[1.44]

Port S:
chargepump Inlet
1- 1/2 3000 psi
split flange
boss per SAE
J518 (Code 61)
1/2-13UNC-2B
24 [0.94] minimum
full thread[-0.002]0

Ø165.1 -0.05
Ø[6.5] [+0.000

12[0.472]185.5[7.30]

35.71[1.41]

98[3.86]
98[3.86]

69.85[2.75]
A

56[2.20]
112.25[4.42]

Ø 20.6[Ø 0.81]210[8.27]CWPort L2(2x) case drain
1-5/8-12UN-2B
224.5
(2x)
[8.84]

Approximate
center of gravity

View "X" Gauge port M2

Gauge port M4
servo pressure
9/16-18UNF-2B

system pressure B
9/16-18UNF-2B

Charge pressure
relief valve

7.9 [0.31]

a

M2

"X"

Rotation
CCW

M5

181 [7.13]
port L120[0.79]

201.5[7.93]

212 maximum[8.35]

9.4[0.37]

"Y"

M4

136
[5.35]

Gauge port M3
Charge pressure
9/16-18UNF-2B

S

M3

48
[1.9]

B

Multifunction
valve

A

External charge plug
1 5/8-12 UNF

M2Gauge port M5
servo pressure
9/16-18UNF-2B

Port L1
case drain
use highest
port as outlet
1-5/8-12UN-2B

108[4.25]

228[8.98]

Multifunction
Valve
Gauge port M10
charge pump Inlet
9/16-18UNF-2B

R 50.8[R 2.0]

30

minim

30
um minimum

Maximum
displacement"A"

Gauge port M1
system pressure A
9/16-18UNF-2B

1

Torque applied to control handle shaft
not to exceed 17 Nm (150 lbf•in]

Nullposition

M1

View "W"419[16.5]

Manual displacement control handle
dimensions

"B"

M10

Maximum
displacement

R 25.4[R 1.0]Ø 6.732x[Ø 0.265]191[7.52]

Port N (optional), speed pick-up
9/16-18UNF-2B
P102 061© Danfoss | December 2022

BC152886483413en-000911 | 75

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad - options AB, BC, CD, DE, EF, EG, BB
Coupling spline data:
Pitch diameter = 14.288 [0.5625]
Pressure angle = 30°
Number of teeth = 9
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 17.8 [0.70]

View "X""X"

For O-ringØ 82.22 x 2.62
[Ø 3.237 x 0.103]

106.375[4.188]

Ø 82.6[Ø 3.252]+ 0.13- 0.00[+ 0.005][- 0.000]

SAE A, option AB

15[0.59]

450.30[17.73]4 threads
3/8-16UNC-2B
17.8 [0.70] deep

106.375[4.188]463.90[18.26]

Coupling spline data:
Pitch diameter = 20.6375 [0.8125]
Pressure angle = 30°
Number of teeth = 13
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 29.5 [1.16]

View "X"146[5.75]"X"[- 0.000]+ 0.13

Ø 101.65 - 0.00
[Ø 4.002][+0.005]

SAE B, option BC

17.5 [0.69]

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

457.4[18.01]4 threads
1/2-13UNC-2B
22 [0.87] deep
475.1
[18.70]

Coupling spline data:
Pitch diameter = 29.6333 [1.167]
Pressure angle = 30°
Number of teeth = 14
Pitch = 12/24
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 22.1 [0.87]

SAE C, option CD

View "X"For O-ringØ 120.32 x 2.62
[Ø 4.737 x 0.103]

114.5[4.51][- 0.000]+ 0.13

Ø 127.03 - 0.00
[Ø 5.001] [+0.005]

"X"

146
[5.75]

30.5[1.20]

76 | © Danfoss | December 2022

460.4
[18.13]477.1[18.78]P102 062

6 threads
1/2-13UNC-2B
22 [0.87] deep

114.5
[4.51]
181[7.13]BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad – options AB, BC, CD, DE EF, EG, BB
View "X"

a

M4

161.6
[6.36]

SA+ 0.13

Ø 152.45 - 0.00
[Ø 6.002] [+0.005]

M3

"X"

[- 0.000]

B

2

M2

SAE D, option DE

M5

Coupling spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30°
Number of teeth = 13
Pitch = 8/16
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 25.9 [1.02]

469.1[18.47]485.8[19.13]

Coupling spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30
Number of teeth = 13
Pitch = 8/16
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 25.9 [1.02]

M10

M1

161.6
[6.36]

View "X"SAE E, option EF
M4

a

224.5
[8.84]

AS+ 0.13

Ø 165.15 - 0.00
[Ø 6.501] [+0.005]

M3

"X"

[- 0.000]

B

2

M2

49.9
[1.96]

4 threads
3/4-10UNC-2B
41 [1.61] deep

M5

For O-ringØ 153 x 3.0[Ø 6.02 x 0.118]

48.5[1.91]

469.1[18.47]

Coupling spline data:
Pitch diameter = 42.862 [1.687]
Pressure angle = 30°
Number of teeth = 27
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 28.5 [1.12]

M1

224.5
[8.84]

494.1[19.45]SAE E, option EG
M4

224.5
[8.84]

AS+ 0.13

Ø 165.15 - 0.00
[Ø 6.501] [+0.005]

M3

"X"

[- 0.000]

B

a

M2

2

M5

For O-ringØ 158.42 x 2.62
[Ø 6.24 x 0.10]

M10

4 threads
3/4-10UNC-2B
41 [1.61] deep

For O-ringØ 164.77 x 2.62
[Ø 6.48 x 0.10]

46.5[1.83]© Danfoss | December 2022

469.1
[18.47]4 threads
3/4-10UNC-2B
41 [1.61] deep
494.1
[19.45]M10
224.5[8.84]

M1
P102 063

BC152886483413en-000911 | 77

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Auxiliary mounting pad – options AB, BC, CD, DE, EF, EG, BB
View "X"SAE B-B, option BB
M4

M2

S
A

146
[5.75]

B[- 0.000]

Ø 101.65 - 0.00
[Ø 4.00] [+0.005]+ 0.13

a

2

M3

"X"

M5

Coupling spline data:
Pitch diameter = 23.8125 [0.9375]
Pressure angle = 30
Number of teeth = 15
Pitch = 16/32
ANSI B92.1-1970, class 6,
fillet root side fit
Length of spline = 24.49 [0.96]

For O-ringØ 94.92 x 2.62
[Ø 3.737 x 0.103]

22.6[0.89]

457.4[18.01]

M1

M10

4 threads
1/2-13UNC-2B
22 [0.87] deep146
[5.75]
P102 064475.1[18.70]Shaft dimensions
Option F1
ANSI B92.1 1970 KL.5 (13 tooth)
Coupling must not protude beyond this surface
66.8[2.63]

Coupling must not protude beyond this surface
66.8[2.63]* 27.941.275[1.625]

Shaft spline data:
Pitch diameter = 41.275 [1.625]
Pressure angle = 30°
Number of teeth = 13
Pitch = 8/16
ANSI B92.1
Fillet root side fit* 56[2.20]

39[1.54]

43.89[1.73][1.10]

38.54[1.52]

7.9[0.311]44.35[1.75]

7.9[0.311]

Option C8ANSI B92.1 1970 KL.5 (27 tooth)* Minimum active spline length
for the specified torque ratings

Shaft spline data:
Pitch diameter = 42.8625 [1.6875]
Pressure angle = 30°
Number of teeth = 27
Pitch = 16/32
ANSI B92.1
Fillet root side fit

42.8625[1.687]
P108 508E

Cover Plate
Option CA

View "W"2

C1

C4 maximum

C3

C1

C4 maximum

C2
Port
M4

Displacement limiter
option 4
limitation both sides

Port
M5

78 | © Danfoss | December 2022

P102065"W"

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Dimensions
Frame size

C1

C2

C3

C4 maximum (option 4)055

69.2 [2.72]

179.4 [7.06]

103.6 [4.08]

114 [4.48]

075

74.2 [2.92]

185.7 [7.31]

109.4 [4.31]

118 [4.65]

100

83.3 [3.28]

183.3 [7.22]

118.3 [4.66]

136 [5.35]

13086.6 [3.41]

209.3 [8.24]

137.2 [5.40]

141 [5.55]

180

-

-

-

184 [7.24]

250

-

-

-

184 [7.24]

3-Position (F-N-R) Electric Control
View "W"

Option DC & DD

C5.2

2

C5 maximum

C5.1

a

b

P102065a"W"

Dimensions
Frame size

C5 maximum

C5.1

C5.2

055

200.6 [7.90]

108.8 [4.28]

106.2 [4.18]

075

207.9 [8.19]

108.8 [4.28]

106.2 [4.18]

100

216.8 [8.54]

117.4 [4.62]

97.6 [3.84]130235.7 [9.28]

102.4 [4.03]

112.6 [4.43]

180

252.4 [9.94]

94.6 [7.32]

120.4 [4.74]

250[option DD only]

210.4 [8.28]

94.6 [7.32]

120.4 [4.74]© Danfoss | December 2022

BC152886483413en-000911 | 79

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Electric Displacement Control (EDC) with MS-Connector or Packard® connector
View "W"

Option KA & KP

C6

Port
X2

C7

2

P102 066

Frame size 042 only"W"

C7
(Frame size 042 only)

PackardConnector
option KP

Port
X1

Dimensions
Frame size

C6

C7

055

95.3 [3.75]

141.2 [5.56]

075

105.2 [4.14]

144.8 [5.70]

100

114.0 [4.49]

153.7 [6.05]

13099.1 [3.90]

172.7 [6.80]

180

93.4 [3.68]

190.0 [7.48]

250

93.4 [3.68]

226.2 [8.91]

Hydraulic Displacement Control (HDC)
Port X1Port X2

C12

View "W"

Option HF, HS

C8.1 (port X2)

C8.2 (port X1)

2

C10

C9

C11

"W"

Dimensions
Frame size

C8.1

C8.2

C9

C10

C11

C12

055

150.8 [5.94]

139.0 [5.47]

71.0 [2.79]

75.7 [2.98]

105.6 [4.15]

115.2 [4.53]

075

148.9 [5.86]

139.0 [5.47]

68.2 [2.68]

67.0 [2.63]

121.8 [4.79]

125.3 [4.93]

80 | © Danfoss | December 2022

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Dimensions (continued)
Frame size

C8.1

C8.2

C9

C10

C11

C12

100

158.0 [6.22]

149.0 [5.86]

76.8 [3.02]

67.0 [2.63]

127.9 [5.03]

131.4 [5.17]

130176.7 [6.95]

167.7 [6.60]

61.8 [2.43]

67.0 [2.63]

142.1 [5.59]

145.6 [5.73]

180/250

194.0 [7.63]

185.0 [7.28]

54.0 [2.12]

67.0 [2.63]

148.6 [5.85]

152.1 [5.99]

Manual Displacement Control (MDC) with neutral start switch
View "W"

Option MB

C14

C13

2

Neutralstart switch
P102 067"W"

Dimensions
Frame size

C13

C14

055

18.0 [071]100.0 [3.94]

075

25.0 [0.98]

106.9 [4.21]

100

31.3 [1.23]

115.8 [4.56]13046.0 [1.81]

134.5 [5.29]

180

52.0 [2.04]

151.8 [5.97]

250

52.0 [2.04]

151.8 [5.97]© Danfoss | December 2022

BC152886483413en-000911 | 81

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Electrohydraulic Displacement Control (NFPE)(except 075 NFPE)
View "V"

Option FG, FH

View "W"Y

X

Option FA, FB, FC, FD

B

A

Y

"V"

P003 165"W"

Dimensions
Frame Size

Option

“X”

“Y”

055

FA, FB, FC, FD

207.00 [8.15]

145.00 [5.71]

075

Special version see Frame Size 075 NFPE Options FK, FL, FM, FN on page 57

100

FA, FB, FC, FD

100

FG, FH

130

FG, FH

244.10 [9.61]

195.50 [7.70]

180

FG, FH

290.00 [11.42]

213.00 [8.39]

250

—

—

—

82 | © Danfoss | December 2022

235.00 [9.25]

161.10 [6.34]
176.60 [6.95]

BC152886483413en-000911

Technical Information
Series 90 Axial Piston Pumps
Installation Drawings
Integral Pressure Filter
View "X"

Option P & L

Gauge port M6
charge pressure
before filter
9/16-18UNF
Ø 94.2 maximum[Ø 3.71 maximum]

180

"X"

180
Gauge port M3
charge pressure
after filter
9/16-18UNF

Required
for removal
F4 maximum

Frame size 042 – 130 = option P
Frame size 042 – 250 = option L

20.3 minimum[0.80 minimum]

22.86[0.90]

F1 = short filter cartridge (option P)
F2 = long filter cartridge (option L)
F3

Remote pressure – without filter
View "X"

Option R & T

Port E
from filter
7/8-14UNF (option R)
1 1/ 16 -12UN (option T)

5.6[0.22]

180

5.6[0.22]"X"
180

Port Dto filter
7/8-14UNF(option R)
1 1/ 16 -12UN(option T)

F5 maximum
F6 maximum
F7 maximum

Frame size 042 – 130 = option R
Frame size 180 – 250 = option T

Gauge port M3
charge pressure
after filter
9/16-18UNF

28.5[1.12]
F3

P102 068

Dimensions
Frame size

F1

F2

F3

F4 maximum

F5 maximum

F6 maximum

F7 maximum

055

174.5 [6.87]

262.6 [10.34]

240.9 [8.19]

209.6 [8.25]

114.3 [4.50]

154.3 [6.07]

169.6 [6.68]

075

174.5 [6.87]

262.6 [10.34]

253.2 [9.67]

214.4 [8.44]

119.1 [4.69]

159.1 [6.26]

174.4 [6.86]

075 NFPE

174.5 [6.87]

262.4 [10.34]

253.7 [9.99]

214 [8.441]

119 [4.691]

159 [6.264]

174 [6.866]

100

174.5 [6.87]

262.6 [10.34]

280.7 [11.05]

223.0 [8.78]

127.7 [5.03]

167.7 [6.60]

183.0 [7.20]

130174.5 [6.87]

262.6 [10.34]

299.9 [11.81]

223.0 [9.17]

137.7 [5.03]

177.7 [6.99]

193.0 [7.60]

180

-

-

327.8 [12.90]-

182.0 [7.16]

236.8 [9.32]

259.2 [10.2]

250

-

-

342.8 [13.49]-

182.0 [7.16]

236.8 [9.32]

259.2 [10.2]© Danfoss | December 2022

BC152886483413en-000911 | 83

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© Danfoss | December 2022

BC152886483413en-000911