NSP SERIESBBCDNSP SeriesCompact Variable Pump Unit
Compact hydraulic units are widely used as a power source in suchmachine tool applications as NC
lathe check opening and closing,tool rotation, machining center
spindle raise and lower operations, etc.
During pressure holding, the NSP
unit enables high machine efficiency that delivers energy savingsof approximately 46% compared

EFFeatures
Increased energy savings

Space-saving

Conserve Resources

Support for using an efficient IE3 premium motor provides 46% energy savings
compared to standard unit (in-housecomparison while dwelling)

Variable vane pump has integrated motor so installations in compact spaces
are easy in a compact and streamlined
layout.

Hydraulic fluid in a low-volume tankhelps conserve the world's resources.

GPower consumption L (kW)

1.5

HIL

1.0

0.5

Dwelling (full cut-off)Motor - polarity: 2.2 kW - 4P
Voltage - frequency: 200 V - 60 Hz

Easy Operation and Maintenance

46%
down

Simple construction and highly reliable pump controls mean excellent
maintenance and handling.

Standard unit

46
Setting pressure at FC P (MPa)Compliant with UL and EISAin the US
Lineup of models use UL certified
electric motors and comply with theUS Energy Independence and Security Act.

High Efficiency for Low HeatOutput

NSP Series
0.02JK

to standard Nachi units (in-housecomparison), all in a compact,
lightweight hydraulic unit.

Motor efficiency is high and heat output is low, particularly when the pumpis dwelling, to support high accuracy
for the parent machine.

8Specifications
Model No.

NSP-*-*VOA*

NSP-*-*V1A*

Pump Capacity

cm3/rev

8.0

16.0Maximum PressureMPa

Motor Output

kWTank Capacityℓ10, 2030, 40Installation Spacemm

300 × 400

340 × 450

Approximate Weightkg

39 (10ℓ, 1.5kW, excluding options)

81 (30ℓ, 2.2kW, excluding options)

Item

Hydraulic Unit

JKL

L-18

8.0 (81.6kgf/cm2) (Full Cutoff Pressure)
0.75, 1.5

1.5, 2.2

NSP-*-*V2A*
26.0
7.0 (Full Cutoff Pressure) * Allowed peak pressure is 13.0
2.2, 3.7

Explanation of model No.
8.0, 16.0cm3/rev SeriesNote) 1.Note that there are certain restrictions on pump capacityand motor capacity combinations. See the Selection Precautions on page L-23 before selecting a model.
2.Design numbers are subject to change without notice.

B

NSP – 10 – 07 V 0A2 – F2T – 14(U)B

Design number
14: Standard product
14U: Product compliant with UL and EISA in the US
Option (Indicate in alphabetic sequence.)
F*, R* : Built-in block (See page L-23 for details.)
T : Thermometer installed on oil level gauge

CPressure adjustment range (A : Constant discharge type)
A2 : 1.5 to 4.0MPa(3.5MPa) Pressure gauge Scale 16MPa
A3 : 3.5 to 6.0MPa(5.0MPa) Pressure gauge Scale 25MPa
A4 : 5.5 to 8.0MPa(7.0MPa) Pressure gauge Scale 25MPa
Note : Figures in parentheses show factory default full cutoff set values.

DFlow rate adjustment range (Maximum capacity)
0 : 8cm3 /rev
1 : 16cm3 /rev
Note : Factory defaults are maximum values shown above.

E

Pump type : Variable vane pump
Motor capacity : 07 : 0.75kW
15 : 1.5kW
22 : 2.2kW

F

Tank volume : 10,20ℓ(Special specification 30ℓ type also available.)G

NSP Series compact variable pump unit

26.0cm3/rev Series

H

NSP – 30 – 22 V 2A2 – F22T – 14(U)Design number
14: Standard product
14U: Product compliant with UL and EISA in the US

IOption (Indicate in alphabetic sequence.)
F*, R* : Built-in block
T : Thermometer installed on oil level gauge

JPressure adjustment range (A : Constant discharge type)
A2 : 2.0 to 4.0MPa(3.5MPa)
A3 : 3.5 to 6.0MPa(5.0MPa)
A4 : 5.5 to 7.0MPa(7.0MPa)
Note : Figures in parentheses show factory default full cutoff set values.

KFlow rate adjustment range (Maximum capacity)
2 : 26cm3 /rev

L

Pump type : Variable vane pump
22 : 2.2kW
37 : 3.7kW

Hydraulic Unit

Motor capacity

JTank volume : 30ℓ 40ℓ

K

NSP Series compact variable pump unit

LL-19

Design Drawings, Dimension Tables

B

Note: See the following page for dimensions.

8.0, 16.0cm3/rev Series
NSP-*-**V*A*-14(U)Air flow

B

Rc1/2
PT

Rc3/4
DR
Above oil level85

P: Rc 1/2

38.1±0.2
LBLA8
DR:Rc3/4(Above oil level)
T:Rc1/2

P:Rc1/2
Flange mountingsurface

3**kW.4P
M

SAEJ518b-1/2
Flange mounting surface details

50 50(64)54 to M8x14(17)17.5±0.2

9C

4

4 to Unit hanger hardware(eye nut)
32

Oil supply port /air breather

67915

DRc1/2

(140)

45300

LE

7LH
NAMEPLATE

25

Oil drain port
Closed plug Rc3/8
12

4 to φ 13 drilling
For M10 bolt

(145)

(40)

LD

12240
290

25

4 to4～ユニット吊り金具
Unit hanger hardware（アイナット）(eyenut)

10-2

4 to M8x15
38.1

99

8 8

Oil tank

2

Suction strainer

3

Uni-pump

4

Pressure gauge

5

Fluid supply port/air breather

6Fluid level gauge

7Radiator

8Flexible hose

9Flexible hose

Rc1/2

Rc3/4

PT

Above oil level

3

SAEJ518b-1/2
Flange mounting surface details

φ 0.8**kW.4P
8

DR:Rc3/4(Above oil level)
DR:Rc3/4(油面上)
T:Rc3/4
55 55

(171)

44(9)

Discharge rate adjusting screw
右回転:吐出量減少
Right rotation:Rate decreased
左回転:吐出量増大
Rotate left: Rate increased

LE

LF

(LF)

LC

(LC)
170
290
340 170
290
340

LD

LD(22)

2(27)

LH
LH

2(35)
25

7

1 1下限
L L
Lowerlimit

L-20

LGUpperlimit上限HH

NAMEPLATE(Written in English (35)
NAMEPLATEand Japanese)
251

吐出量調整ねじ(171)

油 面 gauge
計6LILIL

67350350(366)(LK)

Fluid level

65(1)

5555

150150(LG)Hydraulic Unit

圧力調整ねじPressureadjusting screw
右回転:圧力上昇
Rightrotation: Pressure up
左回転:圧力下降
Left rotation: Pressure down2(LE)Oil supply port /air breather

55 注油口兼エアーブリーザ
LJ(LJ)

955 55

T :Rc3/4

83

83

11

P:Rc1/2
P:Rc1/2
Flangemountingsurface
フランジ取付面

Rc3/4
DR4LA

LB

LB(LA)33

KK

P: Rc 1/217.5

Air 風flowJJ

12376

Part Name

1

26.0cm3/rev Series
NSP-*-**V2A*-14(U)10-1

LPart No.

LCUpper limit HLower limit L

H

Wiring port G 3/4

LF

LG

Fluid levelgauge

6GI

Discharge rate adjusting screw
Right rotation: Rate decreased
Rotate left: Rate increased

4

Pressure adjusting screw
Right rotation: Pressure up
Left rotation: Pressure down

LIF

(161)

(22)

E

4 to φ 13 drilling4～φ13キリトオシ
25 For M10 bolt
(M10ボルト用)

25Oil drain port
Closed plug Rc1/2
排油口
12
閉止プラグRc1/21242612426127

Part No.

Part Name

1

Oil tank

2

Suction strainer

3Uni-pump4

Pressure gauge

5

Fluid supply port/air breather

6

Fluid level gauge

7Radiator

8

Flexible hose

9Flexible hose

8.0, 16.0cm3/rev Series
Dimensions

Model No.

Motor(kW-P)

LALB

LC

NSP-10-07V*A*-*-14(U)0.75—4405400394

NSP-10-15V*A*-*-14(U)

1.5 —4430425396

NSP-10-22V*A*-*-14(U)

2.2 —4460

455

NSP-20-07V*A*-*-14(U)0.75—4405400

NSP-20-15V*A*-*-14(U)

1.5 —4430425498

NSP-20-22V*A*-*-14(U)

2.2 —4460

455

518

LDLE

LF

LG

234

154

109

236

164

119

422

256

174

129

46496

234

154

109

37236

164

119

256

174

129

160

262

LH

LI

H

L

Approximate
Weight
(kg)

B

35
102

10185

10L

30

9L

20L

17L

39

B

41

C

48
(Excluding operating fluid)D

26.0cm3/rev Series
Dimensions

Model No.

Motor
(kW-P)LA

LB

LC

NSP-30-22V2A*-*-14(U)

2.2 —4566

565

547

NSP-30-37V2A*-*-14(U)

3.7 —4591

590

574

NSP-40-22V2A*-*-14(U)

2.2 —4566

565626NSP-40-37V2A*-*-14(U)

3.7 —4591590

653

LD306

385

LE

LF

LG

241

177

127

268

189

139

241

177

127268

189

139

LH

LI

197

50

256

70

LJ

LK

3353

32382

3353

32382

H

L

30L

23L

40L

31L

Approximate
Weight
(kg)
80

E

86
84

F

90

(Excluding operating fluid)G

Selecting a Motor
NSP Motor Selection Curves (Standard voltage for drive motor is 200 VAC, 50/60 Hz or 220 VAC, 60 Hz.)

15

1.5kw

100.75kw
502{20.4}4{40.8}6{61.2}

NSP–**–

35

Discharge rate Q ℓ/min

Discharge rate Q ℓ/min60Hz

07V0A*–*–14(U)158{81.6}

Discharge pressure P MPa{kgf/cm2}

15V1A*–*–14(U)
2230
2.2kw

2520

1.5kw

15
10502{20.4}4{40.8}6{61.2}

NSP–**–60

Discharge rate Q ℓ/min

50Hz
NSPV**–

8{81.6}

Discharge pressure P MPa{kgf/cm2}

H

2.2V2A*–*–14(U)
3.750

I

3.7kw

4030

2.2kw

20J

1002{20.4}4{40.8}6{61.2}8{81.6}

K

Discharge pressure P MPa{kgf/cm2}* See page B-43 for the characteristics of the drive motor.

L
Hydraulic Unit

JKL

L-21

B

[Block Addition Example]
NSP-10-07V0 A2-F2-14(U)NSP—10—07V0A2—F2—14(U)9400

8Rc1/2T(403)

B

3

Rc3/4
DR50 50

45

φ 0.8

48M

567Part No.
1

Oil tank

2

Suction strainer

3

Uni-pump

4

Pressure gauge

78(154)4

76160(22)2

Fluid supply port/air breather

6

Fluid level gauge

7

Radiator

8

Flexible hose

✩ 11 End Plates✩: Part numbers 10 and 11are options. Part number
11 is standard when ablock is equipped.

HI

Performance Characteristics① Noise Characteristics

JConditions(The values shown in the graph to theleft are typical characteristics underthe following conditions.)

Model No. : NSP—20—*V*A4—14(U)70

Noise level dB (A)K

59 Flexible hose
✩ 10 Base Blocks

1GPart Name

A2 B1 B2 4 to Rc 3/8P
T 2 to Rc 3/8

10F

B2 A22(262)E

A1

4 to Rc3/8(30)

1 10 L
11T

3
0.75kW.4P

91111(01)10300

D11B1 A1(3)CP(01)(Aboveoil level)

DR:Rc3/4(Above oil level)
T:Rc1/2

2 to Rc3/8Operating Fluid: ISO VG32
equivalent
Oil Temperature: 40±5°C
Revolution Speed: 1800min –1
Measurement Distance:
1 meter around the unit	(Average value from four directions)60

L
Hydraulic UnitNote) Noise characteristics are affectedby the condition of the floor andstand where the unit is mounted,
whether there are noise reflective
items nearby, and other factors.
Such factors can produce different characteristics than thoseindicated above.

50
Capacity 8cm /rev, motor 1.5kw
3Capacity 16cm3/rev, motor 2.2kw
4002{20.4}J4{40.8}6{61.2}8{81.6}

Discharge pressure P MPa{kgf/cm2}② Oil Temperature Characteristics

Conditions(The values shown in the graph to theleft are typical characteristics underthe following conditions. )Model No. : NSP—*—*V1A*—14(U)Oil temperature rise °C(room temperature differential)

KL

30

30

Tank volume 10L
F.C pressure 5.0MPa

20

Tank volume 20L20

F.C pressure 7.0MPa
F.C pressure 5.0MPa

10F.C pressure 3.5MPa010

F.C pressure 3.5MPa

0012Time h3401234Time hNote) For information about power consumption, see the data for the UVN Series variable vane uni-pumpon page B-43.

L-22

Operating Fluid: ISO VG32
equivalent
Revolution Speed: 1800min –1
Room Temperature: 29°C
Motor: 0.75 to 2.2kWNote) 1.Note that continuous operation atpressures of 5.0MPa or greater withthe 10ℓ tank cause a large rise in oiltemperature. A 20ℓ tank is recommended in this case.
2.
Rises in oil temperature depend on
actual operating conditions, and so
actual temperatures may be different from those indicated above.

Selection Precautions•Model Combinationsz The table below shows the standard
pump and motor combinations.
Motor kW

Pump

0A*

0.75

1.5

○

○

1A*

2.2

○

3.7

○

2A2

○

2A3

○

○
○

2A4

○

x A 30ℓ tank capacities with 8.0 or 16.0
cm3/rev are special specifications.
c A model equipped with a block comeswith a stopper plate on the block.

•Circuit Configurationz The basic configuration is a standard
NSP-** plus an external manifold (circuit).
x Provide piping with sufficient flexibility
between the unit and external manifold.

block and valve total weight is notgreater than 15kg.

■ Make sure the maximum peakpressure (setting pressure + surgepressure) during operation does
not exceed 14MPa.
The following are typical pipe conditions at a reference maximum peakpressure at 14MPa or less as reference.
Rubber hose (for 14MPa) 1/2" x 2m(Pipe Capacity: 250cm3) pump operating conditions: 1MPa→7MPa,
full cutoff■ At pressures in excess of 14MPa,
equip a circuit side surge cutoff relief valve.
Note) The maximum peak pressure of a pumpcapacity of 26 cm3/rev is 13 MPa.

Block Type

F1∙R1F2∙R2

F3Block Weight (kg)

4.5

6.5

8.5

Allowable Additional Weight (kg)

10.5

8.5

6.5

x Contact your agent for information
about equipping a circuit.
c The 26 cm3/rev series blocks are different, contact us for information.

•Paint Specificationsz When a manifold block (optional) isbuilt into the pump, make sure thez The interior and exterior of the tank are coated with a melamine baked-on resin coating,the motor is coated with cation electrodeposition coating, while the pump is spraypainted with a lacquer finish. Color is Nachi
standard color (Munsell No.N-1 70% gloss).
x Contact your agent about specifying
external paint colors.

4 to φ 8.5 drilling
φ 14 x 10counterbore

4 to φ 8.5 drilling
φ 14 x 10counterbore•Built-in Manifold Block

Option Details

(30)

PT

A1

28

47

4 to φ 8.5 drilling

3847

To
T

T

To

15.5
38
78

B3A378
109
145
176

P
G25

H

F3I
P
2 to Rc3/8
T

To Rc3/8Note) Options

63(30)
P

the five types (F1 through R2) shown

Kabove. The P and T ports of each blockare closed with plugs when shipped.

R22.The shape of the temperature gauge
with fluid level gauge "T" is shown tothe left.

LHandling Overview•Startup Precautions

If wiring is performed incorrectly...
Motor and Power·Electric pump rotates in reverse, fluid is not disSupply Polarity
charged Continued operation can damage theR→U pump.
S→V· Attach a pressure gauge to the discharge side andT→W
check for pressure rise.

c Perform repeated motor starts and stops to bleed air fromthe interior of the pump and the suction piping. A no-load
circuit allows faster bleeding.

•Adjusting the Pressure and Discharge
Pressure adjusting screw

Right rotation→Increase
Left rotation→Decrease

Hydraulic Unitz Check to make sure that the operating fluid in the tank is at
the prescribed level.
ÅUpper Limit Mark (Yellow):Prescribed fluid level (nominalcapacity)ıLower Limit Mark (Red):Minimum fluid level
Hydraulic Operating Fluid:General oil-based operating
fluid equivalent to ISO VG32
x Perform electrical wiring exactly as shown below.

J

1.Blocks can be selected from among

5 to Rc3/8

2 to Rc3/8
47

EA21518R1B110580

BP303017.5±0.2150
13080

AB78

2 to Rc3/818A

3 to Rc3/8

B2P49(30)
PT
P
T

41.5

49

3478

T

1563

78

B1DG78

Hydraulic Circuit
6 to Rc3/8
A1
B1 A2B2A3
B3
Diagram
(01)
(01)
(01)
For F338

38.1 ±0.2

A(30)

200

F247

φ 14 x 10 counterbore

783441.5

B

B

P

55
30

30

T

17.5±0.2

100
80

A

127

A1

38.1 ±0.2

B

C

F

28

To

4 to φ 8.5 drilling
φ 14 x 10counterbore

B

8 to Rc3/859
95
126

F1B

A1

28

6 to Rc3/85989

APTA2

A2

4 to Rc3/8APTB63B24934

15B1A
PT

Rc3/8

49

15150

B2A

49
78

6349
34T6349
34PBTo

B

77

1578

B

176
38.1±0.278
28

φ 25(30)APT

38.1±0.2

17.5±0.2
58

49

77
106

28A
PT

Rc3/8

2727T

B

To

17.5±0.2
58

P

A

38
78

38.1±0.2
28

126

38
78

Rc3/8

17.5±0.2
58

4 to φ 8.5 drilling
φ 14 x 10 counterbore

B

Pressure gauge Discharge rateadjusting screw

JRight rotation→
Decrease
Left rotation→
Increase

KNote: Do not touch anything except the adjustment screw shown above.

•Maintenance and Inspectionz Oil Temperature: Use in an area where the temperature is15°C to 60°C.
x Operating Fluid Replacement Cycle: Perform the initial fluid replacement after three months of operation. After that,replace fluid when it becomes dirty or once a year, whichever comes first.
c Radiator Fin Cleaning and Fin Strainer Cleaning: Everysix months or 4,000 hours of operation, whichever comesfirst.

•Environmentz Temperature: 10 to 35°C
x Avoid areas exposed to mist of water-soluble coolant.

L-23L