Radial piston pump
RKP-IIFOR LOW-FLAMMABILITY FLUIDS
HFA, HFB, HFC, HFD

Rev. 3.1, May 2010

MOOG RKP PUMPS OFFER LOW NOISE, UNSURPASSEDRELIABILITY, LONG LIFE, AND A WIDE VARIETY OF
CONTROL OPTIONS FOR DEMANDING APPLICATIONSWhat moves your world

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
CUTAWAY VIEW

4

3

5
6

2

7

1
8

9

1 Drive shaft
2 Roller bearing
3 Control piston
4 Compensator
5 Housing
6 Slipper pads
7 Sliding stroke ring
8 SAE connection
9 Drain port

RKP–II FOR LOW-FLAMMABILITY FLUIDS

2

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSTABLE OF CONTENTSTABLE OF CONTENTSIMPORTANT NOTE

Cutaway view

2

Introduction

4

New design

5Classification of HF fluids

6

Installation guidelines

8

Technical data for use with HF fluids

10

Characteristics

13

Multiple pumps

14

Moog is a registered trademark of Moog Inc. and its
subsidiaries. Unless expressly indicated, all trademarks
indicated herein are the property of Moog Inc. and its
subsidiaries. For the full disclaimer,
refer to: www.moog.com/literature/disclaimers.

Compensator options

19© Moog Inc. 2010. All rights reserved. All changes are reserved.

Type code HFA/HFB

20Type code HFC

22Type code HFD

24

Technical information

26

Appendix A - Compensator options

27

Appendix B - Housings, Flanges, Compensators

34

Moog Global Support

59

TM

RKP–II FOR LOW-FLAMMABILITY FLUIDS

This catalog is intended for users with some technical knowledge. To ensure that all necessary characteristics for function
and safety are covered, the user must check the suitability ofthe products described herein. The products are subject tochange without notice. In case of doubt, please contact Moog.

For the most up-to-date information please visit our website atwww.moog.com/industrial
All dimensions in mm

3

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSINTRODUCTION

GENERAL INFORMATION
Outstanding motion control solutions

Low-noise and rugged design

For over 50 years, we have been a leader in motion control
technology, specializing in the manufacture and application ofhigh-performance products. Today, we incorporate the latest
motion control technology into our products and offer
innovative ideas that can help our customers achieve newlevels of machine performance.

With a number of innovative design features we have beenable to reduce both the primary and the secondary noise levelfrom the RKP–II. For pump sizes 63 cm3/rev (3.84 cu.in/rev)
and 80 cm3/rev (4.88 cu.in/rev) the number of working pistons
has also been increased from 7 to 9. This has made it possible to reduce the diameter of the working pistons, resulting
in reduced dynamic variable forces acting on the housing andreduced flow and pressure ripple on the high-pressure andintake sides. Moog RKP–II helps machine manufacturers
comply with EU directive "2003/10/EC" on noise emissions.

Proven pump technology
The Radial Piston Pump product line (also known as RKP),
is a range of high-performance variable displacement pumps
intended for use in industrial applications. Based on a provenconcept, the RKP's robust and contamination-resistant design
results in long life and a high degree of reliability.
Its rapid response time and high volumetric efficiency have led
to it being the first choice for many machines with demanding
flow and pressure control needs.
We produce a wide range of radial piston pumps of different
sizes, single and multiple arrangements, with various formsof control (mechanical, hydro-mechanical, electro-hydraulic,digital and analog) in order to provide maximum flexibility tomachine builders.
Applications
Thanks to the flexible, high-performance design, the
new RKP–II is the ideal solution for all types of industrial
applications. The RKP is already used in machines forinjection molding, die casting, forming equipment such aspresses and rolls, as well as in general hydraulic applications.
In the field of plastic and metal processing, the RKP is usedon equipment to produce plastic and metal parts, for the
packaging and automotive industries. The RKP is also used in
test equipment, construction, rubber processing, and themining industry.
The new RKP–II is particularly well suited to applications
where power, low noise and robust design, in combination with
precision and speed are needed.

RKP–II FOR LOW-FLAMMABILITY FLUIDS

4

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
NEW DESIGNNEW DESIGN
Mode of operation

The new generation of RKP pumps, the RKP–II, benefits fromreduced noise levels. They are now fitted with a sliding stroke
ring. The suction port has been significantly increased in size,
allowing a wide suction line to be directly connected.
The control ports on the compensators are designed as G 1/4“.

The shaft (1) transfers the drive torque to the star-shaped
cylinder block (3), free of any axial forces, via a crossdisc
coupling (2). The cylinder block is hydrostatically supported
on the control journal (4). The radial pistons (5) in the cylinder
block run against the stroke ring (7) through hydrostaticallybalanced slipper pads (6). The pistons and slipper pads arejoined by ball and socket joints and locking rings. The slipper
pads are guided in the stroke ring by two retaining rings (8)and, when running, are held against the stroke ring by
centrifugal force and oil pressure. As the cylinder blockrotates, the pistons reciprocate due to the eccentric
positioning of the stroke ring, the piston stroke being twice
the eccentricity. The eccentricity is altered by two opposing
control pistons (9, 10) in the pump housing. The oil flow to andfrom the pump passes through the pump ports and into andout of the pistons through the porting in the control journal.
This is controlled by means of intake and pressure slits in thecontrol journal. A compensator (11) monitors the systempressure and the stroke ring position (delivery).
The hydraulic forces are not supported on the roller bearing.
The bearing is thus free from load to a large extent.

RKP–II stands for reliability, low noise, and durability. This isunderlined by its extended warranty. Under the conditions
described on Page 6, warranty for mineral oil is covered for
10,000 operating hours or 24 months. The existing modular
system enables the user to choose a pump or pump combination individually tailored to the respective application.
Further advantages of the Moog radial piston pump
RKP–II are:– Fast response– Compact modular design– Good suction characteristics– Low pressure ripple
The following RKP–II features are available:–	Medium-pressure series (280 bar (4,000 psi)) andhigh-pressure series (350 bar (5,000 psi)) for mineral oil–	Large selection of compensators including mechanical,
hydraulic and electro-hydraulic (analog or digital with
CAN bus)– Mechanical flow limitation– Multiple pumps by tandem mounting– Various drive flanges–	Suitable for most hydraulic oils such as mineral oil,transmission oil, biodegradable oil–	Suitable for special fluids such as oil-in-water emulsions,(HFA), water-glycol (HFC), synthetic esters (HFD), andpolyhydric alcohol

4

8

3

6
7

4
3

10
11

2
8
1

RKP–II FOR LOW-FLAMMABILITY FLUIDS

5

9

5

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
CLASSIFICATION OF HF FLUIDS

Classification of low-flammability fluids
Minimum technical requirements of low-flammability hydraulic fluids as per VDMA 24317

Class

HFA1)

HFB

HFC

Composition

Oil-in-water emulsion
approximately 95 % water

Water-in-oil emulsion
approximately 40 % water

Aqueous polymer solutions Water-free, synthetic(water-glycols)
fluidsFatty acid ester (HFD-U)
Phosphate ester (HFD-R)

Spontaneous ignition
temperature °C (°F)

Possible

After evaporation of water
below 1,000 °C (1,832 °F)

After evaporation of water
below 1,000 °C (1,832 °F)> 530 °C (> 986 °F)

Environmental protection,
biodegradability

Good (synthetic)

Not possible

Not possible

Not possible

Lubricity

Satisfactory

Medium to goodGood

ExcellentPossible operating
temperature+5 °C to +50 °C(+41 °F to +122 °F)+5 °C to +50 °C(+41 °F to +122 °F)-10 °C to +55 °C(+14 °F to +131 °F)

0 °C to +80 °C(+32 °F to +176 °F)

Corrosion protection

Satisfactory

Good

Good

Satisfactory

Gasket material

HNBR

HNBR

HNBR

FPM, e.g. Viton

Seal compatibility

Good

Good

ExcellentMediumWater content

80 % to 95 %approximately 40 %35 % to 55 %< 0.1 %

1)
2)

HFD2)

Subdivision of HFA fluids VDMA 24317, see Page 6
Subdivision of HFD fluids VDMA 24317, see Page 7
Storage life
HFA fluids are stable in the temperature range T = 0 °C toapproximately +50 °C (+32 °F to approximately +122 °F).
Below 0 °C (32 °F) the fluid freezes; alternate freezing andthawing will cause phase separation of the emulsion.
Synthetic fluids, however, are not subject to phase separation.
These fluids evaporate more quickly at temperatures in excess
of 50 °C (122 °F).

HFA fluids
These are characterized by a particularly high water content
of approximately 95 %. The viscosity of these media is naturally very low, placing great demands on the pumps and othercomponents.
These fluids can be broken down into the following different
subcategories:
HFAE mineral oil or macroemulsions
Made up of approximately 95 % water and approximately 5 %mineral oil (frequent mixture ratio), emulsifying agents andadditives. This 2-phase system is known as emulsion. In thismilky-white emulsion oil particles (40 µm to 250 µm (0.0016 in
to 0.01 in)) are dispersed in the water.
HFAE microemulsion
In microemulsion the oil particles (2 µm to 25 µm (0.00008 in
to 0.001 in)) are smaller than in macroemulsion.
The transparent microemulsion contains highly effective additives which improve the lubrication of aqueous fluids, thus
resulting in high wear protection.
HFAS synthetic fluids
These solutions are mineral-oil-free. They are characterized bya high resistance to microbes and are extremely stable. Thereis no possibility of phase separation, as can occur in emulsions.
Dyes are sometimes added to the normally clear fluid to makeit more visible.

RKP–II FOR LOW-FLAMMABILITY FLUIDS

6

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
CLASSIFICATION OF HF FLUIDS

HFD fluids
These synthetic fluids are water-free and are usually based on
phosphoric esters (HFD-R) and synthetic or natural fatty acid
esters (HFD-U). They are characterized by their resistanceto aging and good wear protection, and can be used in wide
temperature ranges. Occasionally they require special seals
and can be aggressive to various metal compounds, paints
and lacquers (refer to the manufacturer's instructions). RKP-II
pumps for HFD fluids are supplied with FPM seals as standard.

HFB fluids
These are water-in-oil emulsions with a water content ofapproximately 40 %. They are ready to use on delivery andhave a nominal viscosity similar to that of hydraulic oils. They
are used relatively rarely, because they do not always comply
with fire test regulations. They are of practical importanceparticularly in British coal mining operations.
HFC fluids
These fluids are the closest to mineral-oil-based hydraulic oils
in terms of their physical and chemical properties, and comply
with most fire test regulations. Their importance in the market
is relatively high. Many hydraulic components can be easily
converted from mineral oil to HFC fluids.

Flushing the bearing in the case of HFC fluids
Flushing the bearing is mandatory for size 32 to 140 pumps.
Flushing is generally performed automatically via a corresponding hole in the bearing cap, and in some case via an
external flushing port on the bearing cap. The cleanness ofthe flushing fluid is governed by the same requirements as
those for the pump.

HFC fluids are aqueous polymer solutions. They are ready touse on delivery and, depending on the viscosity requirementsof the drive, can be used at hydraulic fluid temperatures of-10 °C to +55 °C (+14 °F to +131 °F).

Disposal
These fluids must be disposed of in accordance with the manufacturer's instructions (see DIN safety data sheet for the fluid)
and/or statutory provisions.

In order to keep the loss of water content due to evaporation
to a minimum, the hydraulic fluid temperature should if possible not exceed 50 °C. The water content must be monitored
during operation and, in the event of a marked deviation, kept
at the desired level by adding demineralized water.

Pressure port (B)Drain port
(alternatively)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

Drain port

Pressure port (B)Suction port (A)Suction port (A)7Drain port
(alternatively)

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
INSTALLATION GUIDELINES

Installation guidelines for HFA pumps

8 Filtering:

1 Pump layout exclusively with a horizontal drive shaft.

8.1 Tank ventilation 3 µm (> 0.00012 in), corrosion-resistant2	The shafts of the pump and electric motor must be perfectly flush. Use a properly centered pump carrier witha flexible coupling.

8.2 Return line b10 = 75

3	Pump layout below the minimum fluid level, i.e. directly
next to or under the tank. Installation in the tank is not
permitted.

8.2 and 8.3 without a bypass valve, but with a contamination

8.3 High-pressure line b10 = 75

indicator. Filter surface approximately 3 to 5 times thatfor mineral oils. Use HFA-compatible filters.

4	Suction line should have short and large nominal diameters≤ 1.5 m/s (4 ft 11 in/s)
where possible, avoid bends; Vmax =9 Inspection hole in the pump carrier vertically at thebottom so as to detect possible leakage at the shaft seal.
The unplugged inspection hole must always be at thebottom. If necessary, the mounting flange must be rotated.

5	Drain line: use an upper drain port; large nominal diameters
where possible; end of line below the min. fluid level; use
flexible material.
6	Lay high-pressure lines and other lines so that they aresilently mounted.
7	Tank: corrosion-resistant, particularly above the fluid level(condensation water).
Take care on coats of paint - HFA is occasionally alkaline.
Electric fill level monitoring.

3

8.1

7

RKP–II FOR LOW-FLAMMABILITY FLUIDS

5

8.2

4

8.3

9

2

8

1

6

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
INSTALLATION GUIDELINES

Preparing and maintaining the HFA fluid
The HFA fluid must be prepared and maintained in accordancewith the manufacturer's instructions. The hydraulic fluid temperature should be kept as low as possible within the range of+ 5 °C to + 40 °C (+41 °F to +104 °F). A maximum temperatureof 50 °C (122 °F) is permitted for radial piston pumps. At highhydraulic fluid temperatures there is an increased risk ofcavitation (gap to the vapor phase gets smaller) and there isan increased build-up of bacteria. The tank should therefore
be fitted with a temperature monitor.

The unit must remain filled with fluid through periods of extended shutdown. Before being returned to service, the valvesand pumps must be checked to ensure that they move freely.
If the pump can be rotated slightly by hand at the electricmotor (fan impeller), it can be returned to service. A pumpmust always be treated with preservative agent after being
removed from a system. The housing, inlet port and pressure
port are drained. The housing is then filled with hydraulicoil, in the course of which the drive shaft is rotated until oil
emerges from the pressure and inlet ports.
The pump is now sealed at the suction, pressure and drain
ports.

Starting up an HFA system
Before it is started up for the first time, the pump must be
filled with HFA fluid via the drain port. The first revolutions< 20 bar (=< 290 psi), wheremust be completed at a pressure p =the temperature difference between the tank and the pumpmust not exceed 25 °C (> 77 °F). When the suction and drainlines are free of air bubbles, the pump may be subjected toload after a few minutes.

RKP–II FOR LOW-FLAMMABILITY FLUIDS

For further details, refer to the RKP–II user information.

9

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSTECHNICAL DATA FOR USE WITH HFA/HFB FLUIDS

Parameters
Displacement [cm3/rev] ([cu.in/rev])

19 (1.16)

Type of construction

Pump for open circuit with various control devices

Type of mounting

Drive flange A7:
Straight key according to ISO 2491, 4-hole ISO flange according to ISO 3019/2 (metric)

Mounting position

Horizontal (drive shaft horizontal)

Weight [kg] ([lb])

22 (48.5)

33 (72.8)

71 (156.5)

Mass moment of inertia [kg cm2]([lb sq.in])

17.7 (6.05)

33 (11.28)

186.3 (63.7)

SAE 3/4“3,000 psi
SAE 3/4“3,000 psi

SAE 1“
3,000 psi
SAE 1 1/2“
3,000 psi

SAE 1 1/4“
3,000 psi
SAE 2“
3,000 psi

Recommended pipe outside diameterfor drain lines(lightweight version) [mm] ([in])15 (0.59)

18 (0.71)

22 (0.87)

Drain port

The drain line is to be routed so that the housing is always full of the hydraulic fluid. The pressure at the
Drain port must not exceed 2 bar (29.0 psi) absolute (1 bar (14.5 psi) gage pressure). End of line below
the fluid level. No filter or non-return valve in the drain line.

Type of drive

Direct drive with flexible coupling (please inquire from your Moog contact for other types)

Ambient temperature range

0 °C to +60 °C (+32 °F to +140 °F)

Maximum speed at inlet pressure
0.8 bar (11.6 psi) absolut [rpm]1.0 bar (14.5 psi) absolut [rpm]

1,500
1,800

Min. inlet pressure suction port

0.8 bar (11.6 psi) absolute

Maximum housing pressure

2 bar (29.0 psi) (1 bar (14.5 psi) gage pressure)Continuous pressure [bar] ([psi])
Maximum pressure 1) [bar] ([psi])
Pressure peak [bar] ([psi])

120 (1,740)
160 (2,320)
210 (3,000)

Hydraulic fluid

HFA, oil-in-water emulsions

Hydraulic fluid temperature range+5 °C to +50 °C (+41 °F to +122 °F)

Viscosity

approximately 1 mm2/s

Filtering

NAS 1638, class 7; ISO 4406, class 18/16/13; obtained with filter fineness b10 = 75 2)

Line connections acc. to ISO 6162:
Pressure port
Suction port

1)
2)

32 (1.95)

1,500
1,800

120 (1,740)
160 (2,320)
210 (3,000)

Maximum pressure according to DIN 24 312
Dirt particles retention rate > 10 µm (> 0.0004 in) is 1: 75, i.e. 98.67 %1,000 psi = 70 bar

RKP–II FOR LOW-FLAMMABILITY FLUIDS

1063/80 (3.84/4.88)

1,500
1,800

120 (1,740)
160 (2,320)
210 (3,000)

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSTECHNICAL DATA FOR USE WITH HFC FLUIDS

Parameters
Displacement [cm3/rev] ([cu.in/rev])

19 (1.16)

Type of construction

Pump for open circuit with various control devices

Type of mounting

End mounting, centering and hole-circle dia. according to ISO 3019/2 (metric)
Mounting flange according to ISO 3019/1 (imperial dimensions)
Mounting flange according to ISO 3019/2 (metric)

Mounting position

Optional

Weight [kg] ([lb])

22 (48.5)

33 (72.8)

33 (72.8)

71 (156.5)

71 (156.5)

71 (156.5)

105 (231.5)

Mass moment of inertia [kg cm2]([lb sq.in])

17.7 (6.05)

61.0 (20.84)

61.0 (20.84)

186.3 (63.7)

186.3 (63.7)

186.3 (63.7)

380.0 (130)

SAE 3/4"
3,000 psi
SAE 3/4“3,000 psi

SAE 1“
3,000 psi
SAE 1 1/2“
3,000 psi

SAE 1“
3,000 psi
SAE 1 1/2“
3,000 psi

SAE 1 1/4“
3,000 psi
SAE 2“
3,000 psi

SAE 1 1/4“
3,000 psi
SAE 2“
3,000 psi

SAE 1 1/4“
6,000 psi
SAE 2“
3,000 psi

SAE 1 1/2“6,000 psi
SAE 2 1/2“
3,000 psi

Recommended pipe outside diameterfor drain lines(lightweight version) [mm] ([in])15 (0.59)

18 (0.71)

18 (0.71)

22 (0.87)

22 (0.87)

22 (0.87)

22 (0.87)

Drain port

The drain line is to be routed so that the housing is always full of the hydraulic fluid. The pressure at thedrain port must not exceed 2 bar (29.0 psi) absolute (1 bar (14.5 psi) gage pressure). End of line below
the fluid level. No filter or non-return valve in the drain line.

Line connections acc. to ISO 6162:
Pressure port
Suction port

Recommended flushing quantity l/min (gpm)

32 (1.95)

45 (2.75)

63 (3.84)

80 (4.88)

100 (6.10)

140 (8.54)

4 to 54 to 56 to 75 to 75 to 77 to 10(0.88 to 1.10) (0.88 to 1.10) (1.32 to 1.54) (1.10 to 1.54) (1.10 to 1.54) (1.54 to 2.20)

Type of drive

Direct drive with flexible coupling (please inquire from your Moog contact for other types)

Ambient temperature range

0 °C to +60 °C (+32 °F to +140 °F)

Maximum speed at inlet pressure
0.8 bar (11.6 psi) abs. [rpm]1.0 bar (14.5 psi) abs. [rpm]

1,800
1,800

1,800
1,800

1,800
1,800

1,800
1,800

1,500
1,800

1,500
1,800

1,500
1,800

Maximum speed for
low-noise operation [rpm]

1,800

1,800

1,800

1,800

1,800

1,800

1,800

Min. inlet pressure suction port

0.8 bar (11.6 psi) absolute

Maximum housing pressure

2 bar (29.0 psi) (1 bar (14.5 psi) gage pressure)Continuous pressure [bar] ([psi])
Maximum pressure 1) [bar] ([psi])
Pressure peak [bar] ([psi])

210 (3,000)
230 (3,340)
260 (3,770)

210 (3,000)
230 (3,340)
260 (3,770)

210 (3,000)
230 (3,340)
260 (3,770)

210 (3,000)
230 (3,340)
260 (3,770)

Hydraulic fluid

HFC, aqueous polymer solutions

Hydraulic fluid temperature range-10 °C to +55 °C (+14 °F to +131 °F)

Viscosity

Allowable operational range 12 mm2/s to 100 mm2/s; recommended operational range 16 mm2/s to 46 mm2/s
Hydraulic fluid according to viscosity class ISO VG 46 or VG 32
Maximum viscosity 500 mm2/s during start-up with electric motor at 1,800 rpm

Filtering

NAS 1638, class 9; ISO 4406, class 20/18/15; obtained with filter fineness b20 = 75 2)
NAS 1638, class 7; ISO 4406, class 18/16/13; with electro-hydraulic control (RKP-D)

1)
2)

210 (3,000)
230 (3,340)
260 (3,770)

210 (3,000)
230 (3,340)
260 (3,770)

Maximum pressure according to DIN 24 312
Dirt particles retention rate > 20 µm is 1: 75, i.e. 98.67 %1,000 psi = 70 bar

RKP–II FOR LOW-FLAMMABILITY FLUIDS

11210 (3,000)
230 (3,340)
260 (3,770)

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSTECHNICAL DATA FOR USE WITH HFD FLUIDS

Parameters
Displacement [cm3/rev] ([cu.in/rev])

19 (1.16)

Type of construction

Pump for open circuit with various control devices

Type of mounting

End mounting, centering and hole-circle dia. according to ISO 3019/2 (metric)
Mounting flange according to ISO 3019/1 (imperial dimensions)
Mounting flange according to ISO 3019/2 (metric)

Mounting position

Optional

Weight [kg] ([lb])Mass moment of inertia [kg cm ]([lb sq.in])

32 (1.95)

45 (2.75)

33 (72.8)

63 (3.84)

71 (156.5)

80 (4.88)

71 (156.5)

100 (6.10)

71 (156.5)

140 (8.54)

22 (48.5)

33 (72.8)105 (231.5)

17.7 (6.05)

61.0 (20.84) 61.0 (20.84) 186.3 (63.7) 186.3 (63.7) 186.3 (63.7) 380.0 (130)

SAE 3/4“3,000 psi
SAE 3/4“3,000 psi

SAE 1“
3,000 psi
SAE 1 1/2“
3,000 psi

SAE 3/4“6,000 psi
SAE 3/4“6,000 psi

SAE 1“
6,000 psi
SAE 1 1/2“
3,000 psi

2

Line connections according to ISO 6162:
Medium-pressure series 280 bar (4,000 psi)
Pressure port
Suction port
High-pressure series 350 bar (5,000 psi)
Pressure port
Suction port

Recommended pipe outside diameter for drainlines (lightweight version) [mm] ([in])15 (0.59)

18 (0.71)

SAE 1“
3,000 psi
SAE 1 1/2“
3,000 psi

18 (0.71)

SAE 1 1/4“
3,000 psi
SAE 2“
3,000 psi

SAE 1 1/4“
3,000 psi
SAE 2“
3,000 psi

SAE 1 1/4“
6,000 psi
SAE 2“
3,000 psi

SAE 1 1/4“
6,000 psi
SAE 2“
3,000 psi

22 (0.87)

22 (0.87)

SAE 1 1/4“
6,000 psi
SAE 2“
3,000 psi

SAE 1 1/2“6,000 psi
SAE 2 1/2“
3,000 psi

22 (0.87)

22 (0.87)

Drain port

The drain line is to be routed so that the housing is always full of the hydraulic fluid. The pressure
at the drain port must not exceed 2 bar (29.0 psi) absolute (1 bar (14.5 psi) gage pressure). End ofline below the fluid level. No filter or non-return valve in the drain line.

Type of drive

Direct drive with flexible coupling (please inquire from your Moog contact for other types)

Ambient temperature range

0 °C to +60 °C (+32 °F to +140 °F)

Maximum speed at inlet pressure
0.8 bar abs. [rpm]1.0 bar abs. [rpm]

2,700
2,900

2,500
2,900

1,800
2,100

2,100
2,300

1,500
1,800

1,500
1,800

1,500
1,800

Maximum speed for
low-noise operation [rpm]

1,800

1,800

1,800

1,800

1,800

1,800

1,800

Min. inlet pressure suction port

0.8 bar (11.6 psi) absolute

Maximum housing pressure

2 bar (29.0 psi) (1 bar (14.5 psi) gage pressure)

Medium-pressure version
280 (4,000) 280 (4,000) 280 (4,000) 280 (4,000) 280 (4,000) 280 (4,000) 280 (4,000)
Continuous pressure Max. pressure 1) [bar] ([psi]) 315 (4,570) 315 (4,570) 315 (4,570) 315 (4,570) 315 (4,570) 315 (4,570) 315 (4,570)
Pressure peak
350 (5,000) 350 (5,000) 350 (5,000) 350 (5,000) 350 (5,000) 350 (5,000) 350 (5,000)
High-pressure version
350 (5,000) 350 (5,000)
Continuous pressure Max. pressure 1) [bar] ([psi]) 385 (5,580) 385 (5,580)
Pressure peak
420 (6,000) 420 (6,000)

350 (5,000) 350 (5,000)
385 (5,580) 385 (5,580)
420 (6,000) 420 (6,000)

Hydraulic fluid

HFD-U (HFD-R after consultation)

Hydraulic fluid temperature range

0 °C to +80 °C (+32 °F to +176 °F)

Viscosity

Allowable operational range 12 mm2/s to 100 mm2/s; recommended operational range 16 mm2/s to
46 mm2/s. Hydraulic fluid according to viscosity class ISO VG 46 or VG 32
Maximum viscosity 500 mm2/s during start-up with electric motor at 1,800 rpm

Filtering

NAS 1638, class 9; ISO 4406, class 20/18/15; obtained with filter fineness b20 = 75 2)
NAS 1638, class 7; ISO 4406, class 18/16/13; with electro-hydraulic control (RKP-D)

Maximum pressure according to DIN 24 312
Dirt particles retention rate > 20 µm (> 0.0008 in) is 1: 75,
i.e. 98.67 %1,000 psi = 70 bar
1)

2)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

12

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSPERFORMANCE CURVES

Adjustment range! Caution
The direction of rotation cannot be changed!

Clockwise rotation

Counterclockwise rotation

Stroke ringControl journal

Compensator

( )

( )

( )

( )

Note: Except for RKP 19
Counterclockwise rotation:
Suction port (B)Pressure port (A)V [%]Volumetric efficiency for HFA
100
Mineral oil, HFD
80
HFA

60

40

20

0
0

50

100

RKP–II FOR LOW-FLAMMABILITY FLUIDS

150

200

13

250

p [bar ]RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
MULTIPLE PUMPSRKP – MULTIPLE PUMPS
Other pumps may be added on using adapter flanges for SAEA, SAE-B or SAE-C respectively. For the maximum permitted
through-drive torque for driving add-on pumps, please refer tothe table below.

Additional pumps can be tandem-mounted on the radial piston
pump, so that all pump stages can be driven by the same shaft.
Radial piston pumps (the same size or smaller than the firstpump stage) can be mounted directly.

Adding on RKP, SAE-A, SAE-B or SAE-C adapters Permissible
through-drive torques
Pump stage 1

Pump stage 2

RKP-IIRKP-II

Size (cm3/rev)(cu.in/rev)

19 (1.16)

19 (1.16)

SAE-A

SAE-B

SAE-C

32 (1.95)
45 (2.75)

63 (3.84)
80 (4.88)
100 (6.10)

140 (8.54)

90 Nm(66.4 lbf ft)

–

–

–

90 Nm
(66.4 lbf ft)––

32/45 (1.95/2.75)

185 Nm(136.4 lbf ft)

185 Nm(136.4 lbf ft)––

110 Nm(81.1 lbf ft)

185 Nm(136.4 lbf ft)–

63/80/100(3.84/4.88/6.10)

400 Nm(295.0 lbf ft)

400 Nm(295.0 lbf ft)

400 Nm(295.0 lbf ft)–

110 Nm(81.1 lbf ft)

280 Nm(206.5 lbf ft)

400 Nm(295.0 lbf ft)

140 (8.54)

400 Nm(295.0 lbf ft)

400 Nm(295.0 lbf ft)

400 Nm(295.0 lbf ft)

620 Nm(457.3 lbf ft)

110 Nm(81.1 lbf ft)

280 Nm(206.5 lbf ft)

620 Nm(457.3 lbf ft)

The through-drive torque required to drive add-on pumps
is determined by reference to the following variables:

Through-drive torque from pump stage 1 to 2:

V [cm3/rev]
p [bar]		
ηhm [%]		
M [Nm]		

M1 = 1.59 ·Vi · piΣ ηhmii=2nDisplacement
Pressure
Hydro-mechanical efficiency
Through-drive torque

ExampleReferred to a pump combination RKP63 + RKP 63 + RKP32 +AZP 16 280 bar, 210 bar, 150 bar, 50 bar this means:
Design of 1st through-drive

Design of 2nd through-drive

The pressure and flow of the 1st pump stage are irrelevantto the torque transferred by the through-drive. This torquecan be calculated using the above formula:

M2 = 1.59 ·M1 = 1.59 ·(V2 · p2 V3 · p3 V4 · p4
+
+
ηhm2
ηhm3
ηhm4

(

(

M2 = 1.59 · (32 · 150 / 93 + 16 · 50 / 90) Nm
M2 = 96 Nm (70.8 lbf ft)

M1 = 1.59 · (63 · 210 / 95 + 32 · 150 / 93 + 16 · 50 / 90) Nm

Likewise, the value 96 Nm (70.8 lbf ft) lies below the relevant
threshold value of 400 Nm (295.0 lbf ft) for the through-drivefrom an RKP–II 63 to an RKP–II 32.

M1 = 318 Nm (234.5 lbf ft)

Design of 3rd through-drive

The value 318 Nm (234.5 lbf ft) is below the threshold value of
400 Nm (295.0 lbf ft) specified in the above table for mounting an RKP 63 on another RKP 63.

RKP–II FOR LOW-FLAMMABILITY FLUIDS(

V3 · p3 V4 · p4
+
ηhm3
ηhm4

Similarly, a value of 14 Nm (10.3 lbf ft) is obtained forthe torque required to drive the add-on gear pump. Thus,
the through-drives for this pump combination are permissible
with the stated pressures.
14

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
MULTIPLE PUMPS

Radial piston pump with through-drive and tandem-mounted radial piston pump

Radial piston pump with tandem-mounted gear pump using
SAE-A adapter

RKP–II FOR LOW-FLAMMABILITY FLUIDS

Radial piston pump with tandem-mounted gear pump using
SAE-B adapter

15

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
MULTIPLE PUMPS

ADAPTER FLANGE FOR FITTING AN EXTERNAL PUMP WITH SAE-A FLANGE AND 9-TOOTH SHAFT

Section A-A
min. 32.6
10.6 shaft end
O-Ring 82.22 x 2.62

ø1

5

M10

ø 82.55

106.4

Screw M10x30

132.1

+0.09
+0.036

55

7.5
15
34

ø 18

2.1

Flange code: 82-2

Adapter including through-drive shaft, seals (HNB-R),
intermediate ring for RKP 63-140 and 2 fastening screws.

Shaft code: 16-4
Toothing to: ANSI B92.1 9T 16/32 DP Flat root side fit

RKP 19

CA41832-001-00

Conditions for attachment: RKP with heavy-duty through-drive

RKP 32/45

CA51553-001-00

RKP 63/80/100

CA64727-001-00

RKP 140

CA64728-001-00

RKP–II FOR LOW-FLAMMABILITY FLUIDS

16

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
MULTIPLE PUMPS

ADAPTER FLANGE FOR FITTING AN EXTERNAL PUMP WITH SAE-B FLANGE According TO ISO 3019-1
AND 13-TOOTH SHAFT
Section A-A
43

M 12

20.5

5

ø

15

175.2

ø 101.6

146+0.09+0.036Screw M10x40

O-Ring 101.27 x 2.62
11

5.6
12.6 shaft end

min. 41.2

Flange code: 101-2

Adapter including through-drive shaft, seals (HNB-R),
intermediate ring for RKP 63-140 and 2 fastening screws.

Shaft code: 22-4
Toothing to: ANSI B92.1 13T 16/32 DP Flat root side fit

RKP 32/45

CA36273-001

Conditions for attachment: RKP with heavy-duty through-drive

RKP 63/80/100

CA34793-001

RKP 140

CA50487-001

RKP–II FOR LOW-FLAMMABILITY FLUIDS

17

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
MULTIPLE PUMPS

ADAPTER FLANGE FOR FITTING AN EXTERNAL PUMP WITH SAE-C FLANGE According TO ISO 3019-1
AND 14-TOOTH SHAFT
Section A-A
65

5

ø

15

213.1

ø 127

181

+0.05
+0.02

M 16

22.5

O-Ring26.67 x 2.62

7.1

Screw
M10x40 - 10.9
Special nut M10-8
with lock toothing

Flange code: 127-2

24.8 shaft end
min. 59.3

Adapter including through-drive shaft, seals (HNB-R),
intermediate ring for RKP 140 and 4 fastening screws andspecial nut.

Shaft code: 32-4
Toothing to: ANSI B92.1 14T 12/24 DP Flat root side fit
Conditions for attachment: RKP with heavy-duty through-drive

RKP–II FOR LOW-FLAMMABILITY FLUIDS

13.2

18

RKP 63/80/100

CA64621-001

RKP 140

CA64622-001

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSCOMPENSATOR OPTIONSCOMPENSATOR OPTIONS
A wide range of compensator options can be realized with
the RKP-II, thereby guaranteeing maximum flexibility.
The following options are described in more detail in
Appendix A.
Compensator options

Description/characteristics/application

1. Adjustable pressure compensator, Type F

For constant pressure systems with a fixed pressure setting.

2. Remote pressure compensator, Type H1

For constant or variable pressure systems with remote pressure

3. Pressure compensator with Mooring control, Type H2

For constant pressure systems with a variable pressure setting formooring control

4. Combined pressure and flow compensator, Type J

For displacement systems with a variable flow and load sensingpressure control(hydromechanical compensator concept).

5. Combined pressure and flow compensator with P-T control notch, Type R As 4. with additional active reduction of pressure peaks in the eventof dynamic control process
6. Mechanical stroke adjustment, Type B

For displacement systems with a fixed displacement that may be
manually adjusted as needed.

7. Servo control, Type C1

Adjustment of displacement using a hand lever or an actuator.

8. Electro-hydraulically adjustable compensator with digital on-board
electronics, Type D

For displacement systems with a variable flow and load sensingpressure control

Radial piston pump for potentially explosive atmospheres
In conjunction with all the hydraulic/mechanical compensators
the radial piston pump is available in a version for potentiallyexplosive atmospheres. This pump can be installed and operated in an environment conforming to Group II, Category 2 GD,
Explosion Groups II A, II B and II C. The following range of application according to the EC Directive 94/9/EC is permissible:
II --/2 GD +135 °C (+275 °F) (T4) –15 °C (+5 °F) ≤ Ta
≤ +60 °C (+140 °F)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

19

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
TYPE CODE HFA/HFB (1)

THE TYPE CODE DESCRIBES PUMP OPTIONSDesign interfaces (flange, shaft end and ports), hydraulicparameters (volume flow, operating pressure and hydraulicfluid), and compensator/control options are defined.

ExamplePosition no.

1

2

3

4

Drive

HP

-

R

18

B7

-

Position no. (pump)

5

6

7

8

9

10

11

12

Pump 1

RKP

100

T

A

12

J1

Y

00

Pump 2

RKP

063

K

A

12

F2

Z

00

Pump 3

RKP

019

S

A

12

B1

Z

00

Drive

Radial piston pump

Pos.

1

2

3

4

5

6

7

8

9

10

11

12

Sym.

HP

R

18

B7

RKP

100

T

A

12

D1

Z

00

Radial piston pump
5

6

7

8

9

10

11

12

RKP

063

K

A

12

D2

Z

00

Additional Pump stage
5

6

7

8

9

10

11

12

AZP

008

R

A

05

TP

0

00

Type code for version for HFA/HFB fluid
Position
1

2

3
4

Sym.

Drive

HP
HK
HZ

Code
Hydraulic pump
RKP for potentially explosive atmospheres
Pump with special features

R
L

Direction of rotation
Clockwise, looking at drive shaft
Counterclockwise, looking at drive shaft

18

A7

Speed
Maximum speed for low-noise operation or rated speed for power-controlled pumps, e.g. 18 ^
= 1,800 rpm
Drive flange
Straight key according to ISO 2491, 4-hole ISO flange according to ISO 3019/2 (metric)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

20

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
Type CODE HFA/HFB (2)Position
5

6

7

8
9
10

Sym.

Radial piston pump

RKP
AZP

Pump typeRadial piston pump, variable displacement
Moog gear pump with SAE-A and SAE-B flange

DS1

Attachment of other pumps
Through-drive for RKP attachment and adapter flange for SAE-A, SAE-B and SAE-C

005
008
011
016
019
023
031
033
044
050

Displacement RKP-II
19 cm3/rev (1.16 cu.in/rev)
32 cm3/rev (1.95 cu.in/rev)
63 cm3/rev (3.84 cu.in/rev)
80 cm3/rev (4.88 cu.in/rev)
Displacement and attachment flange of Moog gear pumps (AZP)
5 cm3/rev (0.31 cu.in/rev)		
SAE-A
8 cm3/rev (0.49 cu.in/rev)		
SAE-A
11 cm3/rev (0.67 cu.in/rev)		
SAE-A
16 cm3/rev (0.98 cu.in/rev)		
SAE-A
19 cm3/rev (1.16 cu.in/rev)		
SAE-A
23 cm3/rev (1.40 cu.in/rev)		
SAE-A
31 cm3/rev (1.89 cu.in/rev)		
SAE-A
33 cm3/rev (2.01 cu.in/rev)		
SAE-B
44 cm3/rev (2.68 cu.in/rev)		
SAE-B
50 cm3/rev (3.05 cu.in/rev)		
SAE-B

K
S
R

Pump ports
Medium-pressure series (to 280 bar (4,000 psi)) sizes 32, 45, 63 and 80 cm3/rev (1.95, 2.75, 3.84 and 4.88 cu.in/rev)
Medium-pressure series (to 280 bar (4,000 psi)) size 19 cm3/rev (1.16 cu.in/rev)
German 4 bolt flange (only for gear pumps)

A

Hydraulic fluid
HFA (oil in water)

12

Operating pressure
Maximum operating pressure, e.g. 12 ^= 120 bar (1,740 psi)

019
032
063
080

F1
F2
G1
G2
H1
J1
J2
TP

Control/Compensators
Mechanical stroke adjustment (V = constant)Servo control
RKP-D (electro-hydraulic control with digital on-board electronics), analog or digital activationand internal pressure supply
RKP-D (electro-hydraulic control with digital on-board electronics), analog or digital activationand external pressure supply
Adjustable pressure compensator 30 bar to 105 bar (435 psi to 1,520 psi)
Adjustable pressure compensator 80 bar to 280 bar (1,160 psi to 4,000 psi)
Adjustable pressure compensator, lockable 30 bar to 150 bar (435 psi to 2,175 psi)
Adjustable pressure compensator, lockable 80 bar to 350 bar (1,160 psi to 5,000 psi)
Hydraulically actuated pressure compensator
Combined pressure and flow compensator Δp = 10 bar (145 psi)
Combined pressure and flow compensator Δp = 20 bar (290 psi)Gear pump: without compensatorZ
YO

Additional equipment
No accessories
Maximum flow limiter
Only at gear pump

B1
C1
D1
D2

11

Additional information:

1200

General:Without

00
01

For compensators D1 and D2:
Actual value 4 mA to 20 mA
Actual value 2 V to 10 V

05 to 50

For tandem gear pumps:
Displacement of the 2nd gear pump stage
5 cm3/rev (0.31 cu.in/rev) to 50 cm3/rev (3.05 cu.in/rev)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

21

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
Type CODE HFC (1)Position
1

2

3

4

5

6

7

8

Sym.

Drive

HP
HK
HZ

Code
Hydraulic pump
RKP for potentially explosive atmospheres
Pump with special features

R
L

Direction of rotation
Clockwise, looking at drive shaft
Counterclockwise, looking at drive shaft

18

Speed
Maximum speed for low-noise operation or rated speed for power-controlled pumps,
e.g. 18 ^= 1,800 rpm

A1
B1
A7
B7
C3
D3
XX

Drive flange
Straight key according to ISO 2491, metric round flange (not for RKP 140)
Involute spline according to DIN 5482, metric round flange (not for RKP 140)
Straight key according to ISO 2491, 4-hole ISO flange according to ISO 3019/2 (metric)
Involute spline according to DIN 5480, 4-hole ISO flange according to ISO 3019/2 (metric)
Straight key according to SAE 744 C, 2/4-hole SAE flange according to ISO 3019/1 (imperial)
Involute spline according to SAE 744 C (ISO 3019/1), 2/4-hole SAE flange according to ISO 3019/1 (imperial)
Intermediate flange RKP/RKP

RKP
AZP

Pump typeRadial piston pump, variable displacement
Moog gear pump with SAE-A and SAE-B flange

DS1

Attachment of other pumps
Through-drive for RKP attachment and adapter flange for SAE-A, SAE-B and SAE-C

019
032
045
063
080
100
140

Displacement RKP-II
19 cm3/rev (1.16 cu.in/rev)
32 cm3/rev (1.95 cu.in/rev)
45 cm3/rev (2.75 cu.in/rev)
63 cm3/rev (3.84 cu.in/rev)
80 cm3/rev (4.88 cu.in/rev)
100 cm3/rev (6.10 cu.in/rev)
140 cm3/rev (8.54 cu.in/rev)

005
008
011
016
019
023
031
033
044
050

Displacement and attachment flange of Moog gear pumps (AZP)
5 cm3/rev (0.31 cu.in/rev)		
SAE-A
8 cm3/rev (0.49 cu.in/rev)		
SAE-A
11 cm3/rev (0.67 cu.in/rev)		
SAE-A
16 cm3/rev (0.98 cu.in/rev)		
SAE-A
19 cm3/rev (1.16 cu.in/rev)		
SAE-A
23 cm3/rev (1.40 cu.in/rev)		
SAE-A
31 cm3/rev (1.89 cu.in/rev)		
SAE-A
33 cm3/rev (2.01 cu.in/rev)		
SAE-B
44 cm3/rev (2.68 cu.in/rev)		
SAE-B
50 cm3/rev (3.05 cu.in/rev)		
SAE-B

K
T
S
R

Pump ports
Medium-pressure series (to 280 bar (4,000 psi)) sizes 32, 45, 63 and 80 cm3/rev (1.95, 2.75, 3.84 and 4.88 cu.in/rev)
Medium-pressure series (to 280 bar (4,000 psi)) sizes 100 cm3/rev (6.10 cu.in/rev) and 140 cm3/rev (8.54 cu.in/rev)
Medium-pressure series (to 280 bar (4,000 psi)) size 19 cm3/rev (1.16 cu.in/rev)
German 4 bolt flange (only for gear pumps)

C

Hydraulic fluid
HFC (water glycol)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

22

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
Type CODE HFC (2)Position
9
10

Sym.

Radial piston pump21

Operating pressure
Maximum operating pressure, e.g. 21 ^= 210 bar (3,000 psi)

D3 1
D4 1
D5 1
D6 1
D7 1
D8 1
F1
F2
H1
J1
J2
R1
TP

Control/Compensators
Mechanical stroke adjustment (V = constant)Servo control
RKP-D (electro-hydraulic control with digital on-board electronics), analog or digital activationand internal pressure supply
RKP-D (electro-hydraulic control with digital on-board electronics), analog or digital activationand external pressure supply
RKP-D with external pressure supply, usable for hybrid operation
RKP-D with internal pressure supply, usable for hybrid operation
RKP-D with internal pressure supply usable for master/slave operation
RKP-D with external pressure supply usable for master/slave operation
RKP-D with external pressure supply usable for master/slave and hybrid operation
RKP-D with internal pressure supply usable for master/slave and hybrid operation
Adjustable pressure compensator 30 bar to 105 bar (435 psi to 1,520 psi)
Adjustable pressure compensator 80 bar to 280 bar (1,160 psi to 4,000 psi)
Hydraulically actuated pressure compensator
Combined pressure and flow compensator Δp = 10 bar (145 psi)
Combined pressure and flow compensator Δp = 20 bar (290 psi)
Combined pressure and flow compensator with P-T control notch
Gear pump: without compensator

Z
Y
0Additional equipment
No accessories
Maximum flow limiter
Only at gear pump

B1
C1
D1 1
D2 1

11

Additional information

12

1

00

General:Without

00
01

For compensators D1 to D8:
Actual value 4 mA to 20 mA
Actual value 2 V to 10 V

05 to 50

For tandem gear pumps:
Displacement of the 2nd gear pump stage
5 cm3/rev (0.31 cu.in/rev) to 50 cm3/rev (3.05 cu.in/rev)

See Supplementary Catalog RKP with digital control (RKP-D)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

23

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
Type CODE HFD (1)

Pos.
1

2

3

4

5

6

7

Sym.

Drive

HP
HK
HZ

Code
Hydraulic pump
RKP for potentially explosive atmospheres
Pump with special features

R
L

Direction of rotation
Clockwise, looking at drive shaft
Counterclockwise, looking at drive shaft

18

Speed
Maximum speed for low-noise operation or rated speed for power-controlled pumps,
e.g. 18 ^= 1,800 rpm

A1
B1
A7
B7
C3
D3
XX

Drive flange
Straight key according to ISO 2491, metric round flange (not for RKP 140)
Involute spline according to DIN 5482, metric round flange (not for RKP 140)
Straight key according to ISO 2491, 4-hole ISO flange according to ISO 3019/2 (metric)
Involute spline according to DIN 5480, 4-hole ISO flange according to ISO 3019/2 (metric)
Straight key according to SAE 744 C, 2/4-hole SAE flange according to ISO 3019/1 (imperial)
Involute spline according to SAE 744 C (ISO 3019/1), 2/4-hole SAE flange according to DIN ISO 3019/1 (imperial)
Intermediate flange RKP/RKP

RKP
AZP

Pump typeRadial piston pump, variable displacement
Moog gear pump with SAE-A and SAE-B flange

DS1

Attachment of other pumps
Through-drive for RKP attachment and adapter flange for SAE-A, SAE-B and SAE-C

019
032
045
063
080
100
140

Displacement RKP-II
19 cm3/rev (1.16 cu.in/rev)
32 cm3/rev (1.95 cu.in/rev)
45 cm3/rev (2.75 cu.in/rev)
63 cm3/rev (3.84 cu.in/rev)
80 cm3/rev (4.88 cu.in/rev)
100 cm3/rev (6.10 cu.in/rev)
140 cm3/rev (8.54 cu.in/rev)

005
008
011
016
019
023
031
033
044
050

Displacement and attachment flange of Moog gear pumps (AZP)
5 cm3/rev (0.31 cu.in/rev)		
SAE-A
8 cm3/rev (0.49 cu.in/rev)		
SAE-A
11 cm3/rev (0.67 cu.in/rev)		
SAE-A
16 cm3/rev (0.98 cu.in/rev)		
SAE-A
19 cm3/rev (1.16 cu.in/rev)		
SAE-A
23 cm3/rev (1.40 cu.in/rev)		
SAE-A
31 cm3/rev (1.89 cu.in/rev)		
SAE-A
33 cm3/rev (2.01 cu.in/rev)		
SAE-B
44 cm3/rev (2.68 cu.in/rev)		
SAE-B
50 cm3/rev (3.05 cu.in/rev)		
SAE-B

K
T
T
S
H
R

Pump ports
Medium-pressure series (to 280 bar (4,000 psi)) sizes 32, 45, 63 and 80 cm3/rev (1.95, 2.75, 3.84 and 4.88 cu.in/rev)
Medium-pressure series (to 280 bar (4,000 psi)) sizes 100 cm3/rev (6.10 cu.in/rev) and 140 cm3/(8.54 cu.in/rev)
High-pressure series (to 350 bar (5,000 psi)) sizes 32, 45, 63 and 80 cm3/rev (1.95, 2.75, 3.84 and 4.88 cu.in/rev)
Medium-pressure series (to 280 bar (4,000 psi)) size 19 cm3/rev (1.16 cu.in/rev)
High-pressure series (to 280 bar (4,000 psi)) size 19 cm3/rev (1.16 cu.in/rev)
German 4 bolt flange (only for gear pumps)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

24

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
Type CODE HFD (2)

Pos.
8
9

10

Sym.

Radial piston pumpD

Hydraulic fluid
HFD (synthetic ester)

28
35

Operating pressure
Maximum operating pressure, e.g. 28 ^= 280 bar (4,000 psi)
Maximum operating pressure, e.g. 35 ^= 350 bar (5,000 psi)

D3 1
D4 1
D5 1
D6 1
D7 1
D8 1
F1
F2
H1
J1
J2
R1
TP

Control/Compensators
Mechanical stroke adjustment (V = constant)Servo control
RKP-D (electro-hydraulic control with digital on-board electronics), analog or digital activationand internal pressure supply
RKP-D (electro-hydraulic control with digital on-board electronics), analog or digital activationand external pressure supply
RKP-D with external pressure supply, usable for hybrid operation
RKP-D with internal pressure supply, usable for hybrid operation
RKP-D with internal pressure supply usable for master/slave operation
RKP-D with external pressure supply usable for master/slave operation
RKP-D with external pressure supply usable for master/slave and hybrid operation
RKP-D with internal pressure supply usable for master/slave and hybrid operation
Adjustable pressure compensator 30 bar to 105 bar (435 psi to 1,520 psi)
Adjustable pressure compensator 80 bar to 280 bar (1,160 psi to 4,000 psi)
Hydraulically actuated pressure compensator
Combined pressure and flow compensator Δp = 10 bar (145 psi)
Combined pressure and flow compensator Δp = 20 bar (290 psi)
Combined pressure and flow compensator with P-T control notch
Gear pumpZ
Y
0

Additional equipment
No accessories
Maximum flow limiter
Only at gear pump

B1
C1
D1 1
D2 1

11

Additional information

12

1

00

General:Without

00
01

For compensators D1 to D8:
Actual value 4 mA to 20 mA
Actual value 2 V to 10 V

05 to 50

For tandem gear pumps:
Displacement of the 2nd gear pump stage
5 cm3/rev (0.31 cu.in/rev) to 50 cm3/rev (3.05 cu.in/rev)

See Supplementary Catalog RKP with digital control (RKP-D)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

25

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDSTECHNICAL INFORMATION

Flushing the housing
If the pump is operated at low pressure without flow for long
periods (t > 15 min, p < 30 bar (< 435 psi), Q = 0 l/min (0 gpm)),
pump sizes 63 cm3/rev (3.84 cu.in/rev) to 100 cm3/rev (6.10
cu.in/rev) must be flushed with approximately 4 l/min to
6 l/min (0.88 gpm to 1.32 gpm) to dissipate the heat generated.
The 140 cm3/rev (8.54 cu.in/rev) pump must always be flushedwith 6 l/min to 8 l/min (1.32 gpm to 1.76 gpm). The flushingline to the pump must be connected to the lower drain port. On
pumps for HFC fluid the housing is flushed when the bearing is
flushed.

TECHNICAL INFORMATION! Important
The pump must be put into service by a trained hydraulicsystems engineer.

Installation
The radial piston pump can be mounted in any position. No
radial or axial forces are permitted to act on the drive shaft.
The drive must therefore be effected via a flexible coupling.
Only remove all the pump sealing plugs immediately before
connecting the lines.
Ensure conditions of absolute cleanliness when installing.
The use of cold drawn seamless steel pipes in accordance with
DIN 2391 is recommended.

Noise generation
Radial piston pumps have a low primary noise level. However,the level of noise generated by the entire hydraulic unit isvery much dependent on the mounting of the pump and on therouting of the lines.
Prevent structure-borne noise from being transmitted toradiating machine components covering a large area by:– mounting the pump using an anti-vibration flange– using flexible hoses instead of solid pipes– clamping the pipework with elastic insert clamps

Suction line
A short suction line with a large inside diameter is required
to ensure a short acting time and low noise.
Suction rate < 1.5 m/sec (< 4 ft 11 in/s).
Avoid sharp deviations and pipe couplings (risk of air intake
and air separation, high flow resistance). Use bent pipes orhoses instead. The minimum permissible inlet pressure must
be maintained.
Reduce the suction line only at the pump inlet. If a suction
filter (min. 0.15 mm (0.006 in) mesh aperture) or an isolating
valve is to be used, it must be installed below the fluid level.

Connections
Suction line to port A and pressure line from port B.
Except for RKP 19 counterclockwise: suction port B, pressure
port A.
Putting into service
Do not start up the pump without hydraulic fluid. Before
switching on, the pump housing must be filled with hydraulicfluid using the drain port.
Jog-start the electric motor to check the correct directionof rotation. Run the pump at low pressure until the hydraulicsystem has been fully de-aerated.
When putting pumps for HF fluids into operation, the system
must be run at low pressure of between 30 bar to 50 bar(435 psi to 725 psi) for approximately 1 hour.

Pressure line
Make sure the line is sufficiently secure.
Check the screw tightening torques.
Drain line (L)The upper drain port must be used for the drain line and thepipework is to be routed to ensure the housing is always full of
fluid. The pipe should lead directly to the tank, separate fromother return lines.
The end of the line must be located below the fluid level evenwhen the fluid level is at its lowest in the tank.
Ensure the distance to the suction line is a large as possible.
Do not fit a filter, cooler or non-return valve in the leakage
oil line. The maximum recommended length is 3 meters(9 ft 10 in).
Pressure at the drain port maximum 2 bar (29,0 psi) absolute(1 bar (14.5 psi) gage pressure).
The recommended outside pipe diameters for drain lines(lightweight version) are:
RKP 19: 15 mm (0.59 in)
RKP 32 and 45: 18 mm (0.71 in)
RKP 63, 80, 100 and 140: 22 mm (0.87 in)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

Important
The oil temperature in the tank must not exceed the temperature of the pump by more than 25 °C (77 °F). If this should
occur, the pump must be jog-started for intervals of approximately 1 to 2 seconds until the pump casing has heated up.
When changing a pump, clean the suction pipe, drain line andtank. Refill the tank with filtered oil only.

26

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONS

1. ADJUSTABLE PRESSURE COMPENSATOR, F1, F2
Pressure range:
F1: 30 bar to 105 bar (435 psi to 1,520 psi)
F2: 80 bar to 350 bar (1,160 psi to 5,000 psi)

Adjustment at screw,
destroking pressure p1
Q [l/min]Bp [bar]A

L

Lock nut

Safety valve
p = pmax. + 30 bar(435 psi)

Adjusting screw

Valve spring

Pilot spool
Control piston 2

Adjustment of zero stroke

RKP–II FOR LOW-FLAMMABILITY FLUIDS

27

Control piston 1

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONS

2. Remote pressure compensator H1
Pressure pilot valve:
Manual adjustable or proportional pressure valve
Q = 0.5 l/min to 1.5 l/min (0.11 gpm to 0.33 gpm)
Adjustment at pressure
pilot valve, destroking
pressure p1
Q [l/min]Bp [bar]A

L

Safety valve
p = pmax. + 30 bar(435 psi)

Lock nut
Adjusting screw,
factory-set
pmin. spring
Orifice

Pilot spool

Control piston 2

Pressure pilot valve

RKP–II FOR LOW-FLAMMABILITY FLUIDS

Adjustment of zero stroke

28

Control piston 1

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONS

3. COMBINED PRESSURE AND FLOW COMPENSATOR (“load sensing“) J1
Metering throttle:
Manual adjustable throttle valve or proportional throttle valve.

Ø 0.8 mm to 0.9 mm

Pressure pilot valve:
Manual adjustable or proportional pressure valve
Q = 0.5 l/min to 1.5 l/min (0.22 gpm to 0.33 gpm)

Adjustment atpressure pilot
valve, destroking
pressure p1(0.031 in to 0.035 in)Q [l/min]*B

Adjustment atmetering throttle,deliveryp [bar]L

A

Metering throttle
for flow adjustment
Lock nut

Orifice Ø 0.8 mm to 0.9 mm(0.031 in to 0.035 in)

Adjusting screw,
factory-set

Safety valve
p = pmax. + 30 bar(435 psi)∆p = 10 bar bis 12 bar(145 psi to 174 psi)Δp spring

Pilot spool

Control piston 2

Pressure pilot valve

Adjustment of zero stroke* Recommendation: Hose for pilot oil line, see Page 45

RKP–II FOR LOW-FLAMMABILITY FLUIDS

29

Control piston 1

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONS

4. MECHANICAL STROKE ADJUSTMENT, B 1

Eccentricity of stroke ring

Adjusting screw

Adjusting screw

Sealing nut

Sealing nut

V [cm3/rev] ([cu.in/rev])

19(1.16)

32(1.95)

45(2.75)

63/80
100(3.84/4.88) (6.10)

140(8.54)

ΔV for 1 mm (0.039 in) adjusting spindle travel(pitch 1.5 mm/rev (0.059 in/rev)

3.6(0.22)

5.6(0.34)

6.5(0.40)

8.9(0.54)

11.5(0.70)

Important
When adjusting for the required delivery, ensure that thestroke ring remains held between the two adjusting spindles.
When delivered, the pump is set as standard to Vmax..

RKP–II FOR LOW-FLAMMABILITY FLUIDS

30

11.3
(0.69)RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONS

5. SERVO CONTROL, C1
Actuated manually or mechanically by means of a lever. The
pump displacement is controlled by the position of the lever.

Eccentricity of stroke ring

Lever for control
shaft

Control piston 1

Spool sleeve
V [cm3/rev] ([cu.in/rev])

Control piston 2

Stroke ring

Pilot spool 1

Control torque
Neutral position

Final position

Maximum permissible

19 (1.16)

1.2 Nm (0.89 lbf ft)

1.7 Nm (1.25 lbf ft)

8 Nm (5.90 lbf ft)

32, 45 (1.95, 2.75)

1.2 Nm (0.89 lbf ft)

1.7 Nm (1.25 lbf ft)

8 Nm (5.90 lbf ft)

63, 80 (3.84, 4.88)

1.6 Nm (1.18 lbf ft)

2.4 Nm (1.77 lbf ft)

8 Nm (5.90 lbf ft)

100 (6.10)

1.6 Nm (1.18 lbf ft)

2.4 Nm (1.77 lbf ft)

8 Nm (5.90 lbf ft)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

31

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONS

6. ELECTRO-HYDRAULIC CONTROL WITH DIGITAL ON-BOARD ELECTRONICS, D1 TO D8-C ontrol p/Q: Analog 0 V to 10 V or 4 mA to 20 mAor via CAN bus- Pressure compensator with 16 selectable parameter sets
- 2 pressure sensors may be connected- Integrated horse power controller- Master/slave mode
- Pressure range up to 350 bar (5,000 psi) constant pressure
For a detailed description and further applications, see
Supplementary Catalog RKP with digital control (RKP-D)

RKP with digital control (RKP-D)

X7

X6

X5

X4
X3

X8

No.

Description

Type

X1

Main connector

11+PE

12-pole pin contact

X2

Local CAN (optional) for master/slave mode

M8 x 13-pole pin contact

X3

CAN-InM12x15-pole pin contact

X4

CAN-Out

M12x1

5-pole socket contact

X5

Pressure sensor 2

M8 x 14-pole socket contact

X6

Pressure sensor 1

M8 x 14-pole socket contact

X7

Analog selection of parameter sets

M8 x 14-pole socket contact

X8

LVDT

M12x1

5-pole socket contact

Protection class for valve and LVDT: IP67 (with connected and locked receptacles respectively)
RKP–II FOR LOW-FLAMMABILITY FLUIDS

32

X2 X1

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX A – COMPENSATOR OPTIONSELECTRO-HYDRAULIC CONTROL WITH DIGITAL ON-BOARD ELECTRONICS, D1 TO D8
INTERNAL PRESSURE SUPPLY, D1
Servo pilot valve D930
L

B

Digital OBE

U

S

T

P

B

A

U

S

A

UE
Path encoder

L

Minimum pressure 11 bar (160 psi)

EXTERNAL PRESSURE SUPPLY, D2

F

L

B

Digital OBE

U

S

T

P

B

A

U

UE

25 to 50 bar(360 to 725 psi)Gear pumpS

A
Minimum pressure 0.5 bar (7 psi)

L

For more information on electro-hydraulically adjustable pumps, see catalog "RKP with digital control" (RKP-D).

RKP–II FOR LOW-FLAMMABILITY FLUIDS

33

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS HOUSINGS RKP–II 19 - 100

Pressure side

Drain port

Suction side

Suction port

Pressure port

CautionIllustration shows arrangement for clockwise rotation. For counterclockwise rotation the compensator is mounted on the opposite
side. Change of rotation not possible.

MULTIPLE ARRANGEMENT EXAMPLE RKP 63 + 32

Drive flange
see PP. 36 - 41
RKP–II FOR LOW-FLAMMABILITY FLUIDSRKP 63see PP. 34 - 35
34

Intermediate flange
see P. 42

RKP 32
see PP. 34 - 35

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS HOUSINGS RKP-II 19 - 140

RKP 19RKP 32/45

RKP 63/80/100

RKP 140

Length [mm] ([in]) 	a

104.00 (4.100)

129.00 (5.080)

160.00 (6.300)

173.50 (6.830)

Height [mm] ([in])B

181.00 (7.130)

225.00 (8.860)

272.00 (10.710)

320.00 (12.600)

Width [mm] ([in])(c)163.10 (6.420)

103.00 (4.060)

228.60 (9.000)–(d)46.10 (1.820)

78.00 (3.070)

92.00 (3.630)–(e)290.50 (11.440)

319.30 (12.570)

402.50 (15.850)

483.20 (19.020)

F

212.00 (8.350)

241.00 (9.490)

312.10 (12.280)

398.40 (15.690)

G

78.00 (3.070)

97.00 (3.820)

113.00 (4.450)

130.00 (5.120)

H

83.00 (3.270)

87.00 (3.430)

108.00 (4.250)

130.00 (5.120)

I

90.50 (3.560)

112.50 (4.430)

136.00 (5.350)

160.00 (6.300)

	j106.00 (4.170)

120.50 (4.740)

156.00 (6.140)

199.20 (8.840)

K

56.00 (2.200)

84.00 (3.310)

90.00 (3.540)–

M18 x 1.5 to 13 deep
(M0.71 x 0.06 to 0.51)

M22 x 1.5 to 14 deep
(M0.89 x 0.06 to 0.55)

M26 x 1.5 to 16 deep
(M1.02 x 0.06 to 0.63)

see flange	l80.00 (3.150)

81.40 (3.210)

107.70 (4.240)

109.40 (4.310)(m)

26.00 (1.020)

26.00 (1.020)

32.00 (1.260)(51.7 to D2, D3, D6)

34.80 (1.370)

	n1.00 (0.040)

7.50 (0.300)

4.30 (0.170)

5.00 (0.200)

O

55.00 (2.170)

66.00 (2.600)

80.00 (3.150)–

P

70.00 (2.760)

75.50 (2.970)

98.50 (3.880)

114.00 (4.500)

Drain port[mm] ([in])Q

67.00 (2.640)

88.00 (3.470)

110.00 (4.330)

118.00 (4.650)(r)

35.00 (1.380)

41.20 (1.620)

52.25 (2.060)–

S

67.00 (2.640)

85.00 (3.350)

105.00 (4.130)

118.00 (4.650)(t)

max. 103.00 (4.060)

max. 103.00 (4.060)

max. 98.00 (3.500)–

U

83.00 (3.270)

87.00 (3.430)

113.00 (4.450)

130.00 (5.120)

V
Pressure port[mm] ([in])56.00 (2.200)
SAE 3/4"		
3,000 psi	SAE 3/4"
6,000 psi

78.00 (3.070)
SAE 1"			
3,000 psi		

SAE 1"
6,000 psi

90.00 (3.540)
SAE 1 1/4"
3,000 psi	SAE 1 1/4"
6,000 psi–
SAE 1 1/2"
6,000 psi

1

22.20 (0.870) 		23.90 (0.940)

26.20 (1.030) 27.80 (1.940)

30.16 (1.190) 31.70 (1.250)

36.50 (1.440)

2

11.10 (0.440)		11.95 (o.470) 13.10 (0.520) 13.90 (0.550)

15.08 (0.590) 15.85 (0.620)

18.25 (0.720)

3

19.00 (0.750)		19.00 (0.750)

25.00 (0.980) 25.00 (0.980)

26.00 (1.020) 31.00 (1.220)

38.00 (1.500)

423.81 (0.940)		25.40 (1.000)

26.20 (1.030) 28.60 (1.130)

29.37 (1.160) 33.34 (1.310)

39.65 (1.560)

547.60 (1.870)		50.80 (2.000)

52.40 (2.060) 57.20 (2.250)

58.74 (2.310) 66.68 (2.630)

79.30 (3.120)

12

M10 			16 deep 			(0.63)			

M10
16 deep(0.63)

M10 			16 deep			
(0.63)			

M12		
21 deep		
(0.83)			

M16
25.5 deep(1.00)

SAE 3/4"		
3,000 psi		

SAE 3/4"
6,000 psi

SAE 1 1/2"
3,000 psi

SAE 2"
3,000 psi

SAE 2 1/2"
3,000 psi

Suction port[mm] ([in])M12
21 deep(0.83)

M14
24 deep(0.94)

6

22.20 (0.870)			23.90 (0.870)

35.70 (1.410)

42.80 (1.690)

50.80 (2.000)

7

11.10 (0.440)			11.95 (0.440)

17.85 (0.700)

21.40 (0.840)

25.40 (1.000)

8

19.00 (0.750)			19.00 (0.750)

38.00 (1.500)

50.00 (1.970)

62.00 (2.440)

923.81 (0.940)			25.40 (1.000)

34.95 (1.380)

38.90 (1.530)

44.45 (1.750)

1047.60 (1.870)			50.80 (2.000)

69.90 (2.750)

77.80 (3.060)

88.90 (3.500)

1171.00 (2.800)			71.00 (2.800)

98.00 (3.860)

105.00 (4.130)

117.50 (4.630)

13

M10			
16 deep			
(0.63)		

M12
24 deep(0.95)

M12
22.5 deep(0.89)

M12
22 deep(0.87)

M10
16 deep(0.63)( ) = as shown with flange A7 and with compensator, F, H, J, R and without maximum flow limiting.
RKP–II FOR LOW-FLAMMABILITY FLUIDS

35

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP-II 19 - 100

FLANGES, A1

Shaft A

Flange 1

Straight key according to ISO 2491
Metric round flangeA

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])A 8 x 7 x 32 ISO 2491

A 10 x 8 x 45 ISO 2491

A 14 x 9 x 56 ISO 2491

B

70.70

(2.780)94.50(3.720)116.00(4.570)C

17.10(0.670)18.10(0.710)24.70(0.970)(D)

104.00(4.090)129.00(5.080)160.00(6.300)E

42.90(1,690)57.50(2.260)68.50(2.700)F

41.20(1.620)55.00(2.170)65.00(2.560)G

11.40(0.450)11.00(0.430)13.00(0.510)H

177.00(6.970)220.00(8.660)267.00(10.510)I

125.00 ±0.15 (4.920 ±0.006)

J

100.00 -0.036/-0.090 (3.940 -0.001/-0.003) 125.00 -0.043/-0.106 (4.920 -0.001/-0.004) 160.00 -0.043/-0.106(6.300 -0.001/-0.004)

160.00 ±0.15 (6.300 ±0.006)

200.00 ±0.15 (7.870 ±0.006)

K

79.00

(3.110)101.00(4.000)116.00(4.570)L

30.75(1.210)37.85(1.490)48.40(1.910)M

28.00 -0.013 (1.100 -0.001)

35.00 -0.016 (1.380 -0.001)

45.00 -0.016 (1.770 -0.001)

N

M10
22 deep 		

(0.87)

M10
22 deep(0.87)

M12
32 deep 		

(1.26)

M10
15 deep(0.59)

M12
16 deep(0.63)

M16
23 deep		

(0.91)O

RKP–II FOR LOW-FLAMMABILITY FLUIDS

36

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP-II 19 - 100

FLANGES, B1
Shaft B
Shaft B

Flange 1
Flange 1
Coupling hub
Coupling hub

Involute spline according to DIN 5482 (for B1)(obligatory with multiple arrangement of RKP and SAE-B)
Metric round flangeA

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])DIN 5482 B 28 x 25 e9

DIN 5482 B 35 x 31 e9

DIN 5482 B 45 x 41 e9

B

72.60

(2.860)95.50(3.760)107.90(4.250)C

17.10(0.670)18.10(0.710)24.70(0.970)(D)

104.00(4.090)129.00(5.080)160.00(6.300)E

44.80(1.760)58.50(2.300)60.40(2.380)F

30.00(1.180)40.00(1.570)50.00(1.970)G

11.40(0.450)11.00(0.430)13.00(0.510)H

177.00(6.970)220.00(8.660)267.00(10.510)I

125.00 ±0.15 (4.920 ±0.006)

J

100.00 -0.036/-0.090 (3.940 -0.001/-0.003) 125.00 -0.043/-0.106 (4.920 -0.001/-0.004) 160.00 -0.043/-0.106(6.300 -0.001/-0.004)

K

79.00

(3.110)160.00 ±0.15 (6.300 ±0.006)

101.00(3.980)200.00 ±0.15 (7.870 ±0.006)

116.00(5.570)L

30.80 ±0.25 (1.210 ±0.010)

38.50 ±0.25 (1.520 ±0.010)

48.45 ±0.25 (1.910 ±0.010)

M

27.50 -0.130 (1.080 -0.001)

34.44 -0.160 (1.360 -0.001)

44.50 -0.160 (1.750 -0.001)

N

M10
22 deep		

M10
22 deep(0.87)

M12
32 deep 		

(1.26)(0.59)

M16
23 deep 		

(0.91)

O
P
Q(0.87)

M10
15 deep (0.59)

M12
15 deep 		

31.30 +0.20 (1.230 +0.008)

39.00 +0.20 (1.340 +0.008)

4.00(0.160)RKP–II FOR LOW-FLAMMABILITY FLUIDS

4.00(0.160)3749.00 +0.20 (1.930 +0.008)
4.00(0.160)RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP-II 19 - 100

FLANGES, A7

Shaft
A A
Shaft

Flange7 7FlangeStraight key according to ISO 2491
ISO flange according to ISO 3019/2(metric dimensions)A

HFA pumps have an unplugged inspection hole in the drive
flange which must always be located at the bottom.
If necessary, the mounting flange must be rotated.

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])A 8 x 7 x 36 ISO 2491

A 10 x 8 x 50 ISO 2491

A 12 x 8 x 70 ISO 2491

B

52.00

(2.050)68.00(2.680)92.00(3.620)C

58.10(2.870)64.10(2.520)68.60(2.700)(D)

104.00(4.090)129.00(5.080)160.00(6.300)E

9.00(0.350)9.00(0.350)9.00(0.350)F

42.00(1.650)58.00(2.280)82.00(3.230)G

177.00(6.970)220.00(8.660)267.00(10.510)H
I

100.00 -0.054 (3.940 -0.002)
27.75(1.090)125.00 -0.063 (4.920 -0.002)
34.75(1.370)125.00 -0.063 (4.920 -0.002)
42.75(1.680)J

25.00 +0.009/-0.004 (0.980 -0.001/-0.001)

32.00 +0.018/+0.002 (1.260 -0.001/-0.001) 40.00 +0.018/+0.002 (1.570 -0.001/-0.001)

KM8
22 deep(0.87)

M10
22 deep 		

(0.87)

M12
32 deep(1.26)

L

11.20(0.440)17.20(0.680)17.20(0.680)M

30.00(1.180)30.00(1.180)30.00(1.180)N

174.00(6.850)213.00(8.390)213.00(8.390)O

62.50(2.460)80.00(3.150)80.00(3.150)P

44.20(1.740)56.58(2.230)56.58(2.230)Q

126.00(4.960)156.00(6.140)156.00(6.140)R

44.20(1.740)56.58(2.230)56.58(2.230)S

11.00(0.430)14.00(0.550)14.00(0.550)RKP–II FOR LOW-FLAMMABILITY FLUIDS

38

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP-II 19 - 100

DRIVE FLANGES B7

Shaft B

Flange 7
Involute spline according to DIN 5480
(obligatory with multiple arrangement of RKP and SAE-B)
ISO flange according to ISO 3019/2(metric dimensions)A

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])W25 x 1.25 x 30 x 18 x 8f

W32 x 2 x 30 x 14 x 8f

W40 x 2 x 30 x 18 x 8f

B

42.00

(1.650)46.00(1.810)54.00(2.130)C

58.10(2.870)64.10(2.520)68.60(2.700)(d)

104.00(4.090)129.00(5.080)160.00(6.300)E

9.00(0.350)9.00(0.350)9.00(0.350)F

32.00(1.260)36.00(1.420)44.00(1.730)G

177.00(6.970)220.00(8.660)267.00(10.510)H

100.00 -0.054 (3.940 -0.002)

125.00 -0.063 (4.920 -0.002)

125.00 -0.063 (4.920 -0.002)

I

25.00

(0.980)32.00(1.260)40.00(1.570)K

M8
22 deep		

(0.87)

M10
22 deep		

(0.87)

M12
32 deep 		

(1.26)

L

11.20(0.440)17.20(0.680)17.20(0.680)M

30.00(1.180)30.00(1.180)30.00(1.180)N

174.00(6.850)213.00(8.390)213.00(8.390)O

62.50(2.460)80.00(3.150)80.00(3.150)P

44.20(1.740)56.58(2.230)56.58(2.230)Q

126.00(4.960)156.00(6.140)156.00(6.140)R

44.20(1.740)56.58(2.230)56.58(2.230)S

11.00(0.430)14.00(0.550)14.00(0.550)RKP–II FOR LOW-FLAMMABILITY FLUIDS

39

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP-II 19 - 100

DRIVE FLANGES C3

Shaft C

Flange 3
Key to SAE Standard
SAE flange according to ISO 3019/1(imperial dimensions)A

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])6.35 x 6.35 x 25.4

7.94 x 7.94 x 32.0

9.53 x 9.53 x 42.0

B

46.10

(1.820)57.50(2.260)62.00(2.440)C

59.10(2.330)63.10(2.480)67.60(2.660)(D)

104.00(4.090)129.00(5.080)160.00(6.300)E

30.00(1.810)30.00(1.810)30.00(1.810)F

8.00(0.310)10.00(0.390)10.00(0.390)G

36.70(1.440)46.00(1.810)54.00(2.130)H

177.00(6.970)220.00(8.660)267.00(10.510)I

101.60 -0.05 (4.000 -0.002)

127.00 -0.05 (5.000 -0.002)

127.00 -0.05 (5.000 -0.002)

J

28.09

K

25.40 -0.05

L

12.20

(0.480)16.20(0.640)16.20(0.640)M

9.40(0.370)11.50(0.450)8.00(0.310)N

126.00(4.960)156.00(6.140)156.00(6.140)O

45.00(1.770)57.25(2.250)57.25(2.250)P

174.00(6.850)213.00(8.390)213.00(8.390)Q

146.00(5.750)181.00(7.130)181.00(7.130)R

45.00(1.770)57.25(2.250)57.25(2.250)S

14.40(0.570)14.40(0.570)14.40(0.570)T

14.40(0.570)17.60(0.690)17.60(0.690)U

3/8"-16UNC-2B
22 deep 		

(0.87)

3/8"-16UNC-2B
22 deep 		

(0.87)(1.110)(1.000 -0.002)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

35.21
31.75 -0.05(1.390)(1.250 -0.002)

40

42.27
38.10 -0.05(1.660)(1.500 -0.002)

7/16"-14UNC-2B
32 deep 		

(1.26)RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP-II 19 - 100

DRIVE FLANGES D3

Shaft D

Flange 3
Involute spline according to SAE 744 C(obligatory with multiple arrangement of RKP and SAE-B)
SAE flange according to ISO 3019/1(imperial dimensions)A

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])ANSI B92.1-1970
Class 5 30PA.
15T, 16/32DP
Flat root side fit

ANSI B92.1-1970
Class 5 30PA.
14T, 12/24DP
Flat root side fit

ANSI B92.1-1970
Class 5 30PA.
17T, 12/24DP
Flat root side fit

B

46.00

(1.810)56.00(2.210)62.00(2.440)C

59.10(2.330)63.10(2.480)67.60(2.660)(D)

104.00(4.090)129.00(5.080)160.00(6.300)E

30.00(1.810)30.00(1.810)30.00(1.810)F

8.00(0.310)10.00(0.390)10.00(0.390)G

38.00(1.500)48.00(1.890)54.00(2.130)H

23.00(0.910)29.00(1.140)34.00(1.340)I

177.00(6.970)220.00(8.660)267.00(10.510)J

101.60(4.000)127.0085.00)

127.00(5.000)K

25.20(0.990)31.50(1.240)37.70(1.480)L

12.20(0.480)16.20(0.640)16.20(0.640)M

8.00(0.310)8.00(0.310)8.00(0.310)N

126.00(4.960)156.00(6.140)156.00(6.140)O

45.00(1.770)57.25(2.250)57.25(2.250)P

174.00(6.850)213.00(8.390)213.00(8.390)Q

146.00(5.750)181.00(7.130)181.00(7.130)R

45.00(1.770)57.25(2.250)57.25(2.250)S

14.40(0.570)14.40(0.570)14.40(0.570)T

14.40(0.570)17.60(0.690)17.60(0.690)U

3/8"-16UNC-2B
22 deep 		

(0.87)

3/8"-16UNC-2B
22 deep 		

(0.87)RKP–II FOR LOW-FLAMMABILITY FLUIDS

41

7/16"-14UNC-2B
32 deep 		

(1.26)RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS INTERMEDIATE FLANGES RKP-II 19 - 100

INTERMEDIATE FLANGE RKP-RKP, XX
RKP 19/32/45

RKP 63/80/100

RKP 19 [mm] ([in])RKP 32/45 [mm] ([in])RKP 63/80/100 [mm] ([in])A

177.00(6.970)220.00(8.660)266.00(10.470)B

180.00(7.090)180.00(7.090)180.00(7.090)C

14.00(0.550)14.00(0.550)14.00(0.550)D

23.50(0.930)21.00(0.830)21.00(0.830)E

50.00(1.970)50.00(1.970)53.50(2.110)(F)

104.00(4.090)129.00(5.080)160.00(6.300)RKP–II FOR LOW-FLAMMABILITY FLUIDS

42

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP-II 19 - 100

ADJUSTABLE PRESSURE COMPENSATOR, F1, F2
HYDRAULICALLY ACTUATED PRESSURE COMPENSATOR, H1
COMBINED PRESSURE AND FLOW COMPENSATOR, J1
PRESSURE AND FLOW COMPENSATOR WITH P-T LAND, R1
RKP 63/80/100

RKP 19/32/45

Pilot oil port on H, J and R
compensators

G 1/4“G 1/4“

Tank connection on R compensator

Tank connection on R compensator

RKP–II FOR LOW-FLAMMABILITY FLUIDS

Compensator F - adjustable
Compensators H, J, R ∆p fixed
10+2 bar (145+30 psi)or 20+2 bar (290+30 psi)

G 1/4“G 1/4“Control port on H, J and R
compensators

Compensator F - adjustable
Compensators H, J, R ∆p fixed
10+2 bar (145+30 psi)or 20+2 bar (290+30 psi)

43

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – ADJUSTMENT PILOT OIL LINE COMPENSATORS RKP-II 19 - 100

ADJUSTABLE PRESSURE COMPENSATOR, F1, F2
B
Q [l/min]Screw
adjustmentp [bar]LA

HYDRAULICALLY ACTUATED PRESSURE COMPENSATOR, H1
B
Q [l/min]Screw
adjustment(*)

p [bar]A

L

COMBINED PRESSURE AND FLOW COMPENSATOR, J1, J2
Ø 0.8 mm to 0.9 mm(0.031 in to 0.035 in)Screw
adjustment
Q [l/min](*)

B

Set at metering
throttle

p [bar]A

L* Hose recommendation for control line
When high dynamics are required for flow control, adjust
orifice and control line accordingly.

RKP 19DN 6

RKP 32, RKP 45

DN 8

RKP 63, RKP 80, RKP 100

DN 10

I = 800 mm (31.50 in)

Δp = 10 bar to 12 bar

RKP–II FOR LOW-FLAMMABILITY FLUIDS

44

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – ADJUSTMENT PILOT OIL LINE COMPENSATORS RKP-II 19 - 100

COMBINED PRESSURE AND FLOW COMPENSATOR “LOADSENSING” WITH P-T LAND, R1
Ø 0.8 mm to 0.9 mm(0.031 in to 0.035 in)

D1

(*)

Q [l/min]B

Adjustment atpressure pilot
valve

Set at metering
throttle

TD2
p [bar]A

L* Recommendation: Hose for pilot oil line

D1 [mm] ([in])D2 [mm] ([in])RKP 19 to 45

DN 6

0.9 (0.035)

Δp = 10 bar to 12 bar
1.2 (0.047)

RKP 63 to 100

DN 8

0.9 (0.035)

1.2 (0.047)

I = 800 mm (31.50 in)

Notes on multiple pump circuits

Caution!

In the case of multiple pumps, which deliver into one
circuit, the P-T control notch may only be activated for thecompensator of the first pump by connecting the T-connection
to the tank. The T-connection of the compensators of add-on
pumps must be sealed off.

The tank line of the compensator must not be combined withthe drain line of the pump.

RKP–II FOR LOW-FLAMMABILITY FLUIDS

45

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP-II 19 - 100

ADJUSTABLE PRESSURE COMPENSATOR, LOCKABLE WITH H KEY, G1, G2
RKP 19/32/45

RKP–II FOR LOW-FLAMMABILITY FLUIDSRKP 63/80/100

46RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP-II 19 - 100

ELECTRO-HYDRAULIC CONTROL WITH DIGITAL ON-BOARD ELECTRONICS, D1 TO D8
RKP 19/32/45

Local CAN only formaster/slave mode

RKP–II FOR LOW-FLAMMABILITY FLUIDSRKP 63/80/100

M18 x 1.5 – 12 deep
External pressure
port only for D2/D3

Local CAN only
for master/slave mode47

M18 x 1.5 – 12 deep
External pressure port only
for D2/D3

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP-II 19 - 100

SERVO CONTROL C1
RKP 19/32/45

RKP 63/80/100
Spline15 x 17 DIN 5481

Spline15 x 17 DIN 5481

M6-8 deep

M6-8 deep

V [cm3/rev]
19
32
45
63
80
100
([cu.in/rev]) (1.16) (1.95) (2.75) (3.84) (4.88) (6.10)
α[°]1 Zero stroke stop (set at factory)
2 End stop / ±Vmax. (set at factory)

Torque Zero
M [Nm] position([lbf ft])End
position
Maximum

RKP–II FOR LOW-FLAMMABILITY FLUIDS

48

44

47

57

44

1.2
(0.89)
1.6(1.18)

1.7(1.25)

56

56

1.6(1.18)
2.4
2.6
2.6(1.77) (1.92) (1.92)
8 (5.90)

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP-II 19 - 100

MAXIMUM FLOW LIMITER Y
RKP 19/32/45

RKP 63/80/100

V [cm3/rev] ([cu.in/rev])

19(1.16)

32(1,95)

45(2.75)

63/80(3.48/4.88)

100(6.10)

ΔV for 1 mm (0.039 in) travel of adjusting screw

3.6(0.22)

5.6(0.34)

6.5(0.40)

8.9(0.54)

11.3(0.69)(pitch 1.5 mm/rev (0.059 in/rev))

RKP–II FOR LOW-FLAMMABILITY FLUIDS

49

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP-II 19 - 100

Mechanical stroke adjustment B1
RKP 19-100

WAF24, M=180+20 Nm(132.8+14.8 lbf ft)
WAF8, M=T Nm

WAF8, M=180+20 Nm(132.8+14.8 lbf ft)
WAF8

A

B

C

V [cm3/rev] ([cu.in/rev])

19 (1.16)

32 (1.95)

45 (2.75)

63 (3.84)

80 (4.88)

100 (6.10)

A [mm] ([in])212 (8.35)

246 (9.69)

246 (9.69)

312 (12.28)

312 (12.28)

312 (12.28)

B [mm] ([in])32.9 (1.30)

31.8 (1.25)

33.0 (1.30)

40.8 (1.61)

42.7 (1.68)

42.5(1.67)

C [mm] ([in])267 (10.51)

298 (11.73)

298 (11.73)

379 (14.92)

379 (14.92)

379 (14.92)

T [Nm] ([lbf ft])

15+5
(11.1+3.7)

15+5(11.1+3.7)

15+5(11.1+3.7)

26+4(19.2+3.0)

26+4(19.2+3.0)

26+4(19.2+3.0)

ΔV for 1 mm (0.039 in) travel of adjusting screw(pitch 1.5 mm/rev (0.059 in/rev))

3.6(0.22)

5.6(0.34)

6.5(0.40)

8.9(0.54)

8.9(0.54)

11.3(0.69)

Important
When adjusting for the required delivery, ensure that thestroke ring remains held between the two adjusting screws.
When delivered, the pump is set to Vmax..

RKP–II FOR LOW-FLAMMABILITY FLUIDS

50

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS HOUSING RKP–II 140

RKP 140 SHOWN WITH FLANGE A7 AND COMPENSATOR R1
88.9

M 12 22 deep

44.45

118

25.4

50.8 (2.00)

Suction port
SAE 2 1/2" - 3,000 psi

105.9

123

320

160

Drain port

63

34.8

130
191.1

86.8

Pressure port

18.25

36.5

M 16 -25.5 deep

39.65
79.3

51

173.5

118.0

166.7

109.4

SAE 11/2" - 6,000 psi

RKP–II FOR LOW-FLAMMABILITY FLUIDS

171.5
173.5

390.4

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS HOUSING RKP–II 140

DRIVE FLANGE A7

Shaft AA 14 x 9 x 80 ISO 2491
60.7

M 26 x 1.5 17 deep45°

141.42

204

320
49.3

141.42155.5
ø 50 -- 0.018
0.002 53.5

312

ø 160 -0.43 -0.106

1882

M 16 - 36 deep

9.3
18

Flange 7

20
92.4

44.2
86.8

204
173.5

488.2

Straight key according to ISO 2491
ISO mounting flange to DIN ISO 3019/2 (metric dimensions)

DRIVE FLANGES B7

DIN 5480
W 50 x 2 x 24 x 9g

60.7

64.4

Shaft BM 26 x 1.5 17 deep

141.4245°
18

0ø 49.6 - 0.16

ø 24

141.42

204

0

320

- 0.043

ø 160 - 0.106

312

155.5

54 (2.13)

M 16 - 36 deep

9.3

Flange 718
20 44.2
86.8

204
173.5

488.2

Involute spline according to DIN 5480 (for RKP mounting obligatory)
ISO mounting flange to DIN ISO 3019/2 (metric dimensions)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

52

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP 140

Drive flange C3
Shaft C

90.4

11, 11 x 11, 11 x 75

82

60.7

161.6
M 26 x 1.5 17 deep

45°

20

204

161.6

320
49.3

0

ø 152.4 - 0.05

312

155.5

.5

7/16" - 14 UNC - 28
32 deep
12.7 (0.50)
18Flange 30ø 44.45 - 0.05

20 44.2

204

86.8

173.5

488.2

Key to SAE Standard
SAE mounting flange to DIN ISO 3019/1 (imperial dimensions)

DRIVE FLANGE D3
ANSI B92.1 - 1970class 5 30° PA, 13 T,
8/16 DP Flat rootside fit

75.4

60.7

M 26 x 1.5 17 deep

161.6

67

45°

161.6

320

204

155.5
ø 152.40- 0.05

312

.5

20

0

ø 44.45 - 0.25

Shaft D

7/16"
14 UNC - 28
32 deep

12.7 (0.50)

Flange 318204

20 44.2
86.8

173.5

488.2

Involute spline according to SAE 744 C (for RKP mounting obligatory)
SAE mounting flange to DIN ISO 3019/1 (imperial dimensions)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

53

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS DRIVE FLANGES RKP 140

INTERMEDIATE FLANGE RKP 140-140

M26 x 1.5 –17 deep

ø 180

320

312

155.5

39.7

11.7
488.2

44.2
65.8

173.5

RKP–II FOR LOW-FLAMMABILITY FLUIDS

54

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP–II 140

PRESSURE AND FLOW COMPENSATOR (LOAD SENSING) WITH P-T LAND, R1

SW 19 (M = 10 + 5 Nm)
G 1/4" Drain port

25.6
28

59.4

105.6

26

50
G 3/8" Tank port

254.1

Caution!
The tank line of the compensator must not be combined withthe drain line of the pump.

Following circuits are illustrated

Pressure and flow compensation“load sensing”

Flow compensation

Notes on multiple pump circuits* Recommendation: Hose for pilot oil line

RKP 140

DN 8

D1 [mm] ([in])D2 [mm] ([in])0.8 (0.031)

1.1 (0.043)

In the case of multiple pumps which deliver into one circuit, theP-T land may only be activated for the compensator of the firstpump by connecting the tank port to the tank. The tank port ofthe compensators of add-on pumps must be plugged.

I = 800 mm(31.50 in)

RKP–II FOR LOW-FLAMMABILITY FLUIDS

Pressure compensation activated

55

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP–II 140

ELECTRO-HYDRAULIC Control WITH DIGITAL ON-BOARD ELECTRONICS D

RKP–II FOR LOW-FLAMMABILITY FLUIDS

56

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP–II 140

MAXIMUM FLOW LIMITER Y

V [cm3/rev] ([cu.in/rev])

140(8.54)

ΔV for 1 mm (0.039 in) travel adjusting screw(pitch 1.5 mm/rev (0.059 in/rev))

11.5(0.70)RKP–II FOR LOW-FLAMMABILITY FLUIDS

57

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
APPENDIX B – TECHNICAL DRAWINGS COMPENSATORS RKP–II 140

MECHANICAL STROKE ADJUSTMENT B

.

.

SW24
M = 180 + 20 Nm

SW24
M = 180 + 20 Nm

.

.

.

.

SW8
M = 20 + 5 Nm

SW8.

V [cm3/rev] ([cu.in/rev])

140(8.54)

ΔV for 1 mm (0.039 in) travel adjusting screw(pitch 1.5 mm/rev (0.059 in/rev))

11.5(0.70)RKP–II FOR LOW-FLAMMABILITY FLUIDS

58

RADIAL PISTON PUMPS RKP-II FOR LOW-FLAMMABILITY FLUIDS
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RKP–II FOR LOW-FLAMMABILITY FLUIDS

59

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Radial Piston Pump RKP-II for low-flammability fluids
GUT/PDF/Rev. 3.1, May 2010, Id. CDL28651-en

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