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Артикул: RX7419

Все товары Bosch Rexroth

Directional spool valves, pilot operated, with hydraulic-hydraulic actuation WHH

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Description

  • Size 10, 16, 25 (4W.H22), 25 (4W.H25), 32
  • Component series 4X, 7X, 6X
  • Maximum operating pressure 280 bar
  • Maximum flow 1100 l/min

Features

  • Type of actuation: hydraulic-hydraulic
  • For subplate mounting
  • Porting pattern according to ISO 4401
  • Subplates according to data sheets 45054 to 45060 (separate order)
  • Spring centering, spring end position or hydraulic end position
  • Optional auxiliary operating device
  • Switching time adjustment, optional
  • Preload valve in channel P of the main valve, optional
  • Stroke setting at main spool, optional
  • Stroke setting and/or end position control, optional
  • Inductive position switch and proximity sensors (contactless)

Product description

Type 4WPH …

Valve type WHH is a directional spool valve with hydraulic actuation. It controls the start, stop and direction of a flow.

The directional valve basically consists of the main valve with housing (1), the main control spool (2), one or two return springs (3.1) and (3.2), as well as the pilot control valve (4).

The main control spool (2) in the main valve is held in the zero or initial position by the springs or by means of pressurization. In the initial position, the two spring chambers (5) and (7) are connected with the tank in a depressurized form via the pilot control valve (4). The pilot control valve (4) is supplied with pilot oil via the control line (6). Supply can be implemented internally or externally (externally via port X).

Upon actuation of the pilot control valve, e. g. side "a", the pilot spool (8) is moved to the left and thus, the spring chamber (7) is pressurized with pilot pressure. The spring chamber (5) remains depressurized.

The pilot pressure acts on the left side of the main control spool (2) and moves it against the spring (3.1). This connects port P with B and A with T in the main valve.

When de-energized, the control spool (8) is held in the central position or in the initial position by the return springs (9) (except impulse spool). The spring chamber (7) is unloaded to the tank.

The pilot oil from the spring chamber is displaced into channel Y via the pilot control valve (4).

The pilot oil supply and return are implemented internally or externally (externally via port Y).

Notice!

The return springs (3.1) and (3.2) in the spring chambers (5) and (7) hold the main control spool (2) in central position without pilot pressure even with, for example, vertical valve positioning.

Pilot oil supply

NG10

Pilot oil supply

NG16

Pilot oil supply

NG25 (type 4W.H 22 .7X/…)

Pilot oil supply

NG25 (type 4W.H 25 .6X/…)

Pilot oil supply

Size 32

Pilot oil supply

Pilot oil return

External

2

closed

External

1

closed

Internal

2

open

Internal

1

open

Type 4W.H…

The pilot oil supply is implemented externally - via channel X - from a separate circuit.

The pilot oil return is implemented externally via the Y channel into the tank.

Type 4W.H…E…

The pilot oil supply is implemented internally from channel P of the main valve. (see Technical data)

The pilot oil return is implemented externally - via channel Y - in the tank. In the subplate, port X is closed.

Type 4W.H…ET…

The pilot oil supply is implemented internally from channel P of the main valve.

The pilot oil return is implemented internally via the channel T into the tank. In the subplate, ports X and Y are closed.

Type 4W.H…T...

The pilot oil supply is implemented externally - via channel X - from a separate circuit.

The pilot oil return is implemented internally via the channel T into the tank. In the subplate, port Y is closed.

1

Plug screw M6, wrench size 3

Pilot oil return

2

Plug screw M6, wrench size 3

Pilot oil supply

3

Pilot control valve

4

Main valve

5

Cover

6

Throttle insert

Tightening torquesMA for cover fastening screws:

NG16: 35 Nm ± 10 %;

NG25: 68 Nm ± 10 %

Tightening torques MA of the mounting screws for the pilot control valve:

NG10 to 32: 9 Nm ± 10 %

Throttle insert

Use of the throttle insert (6) is necessary if the pilot oil supply in channel P of the pilot control valve is to be limited.

The throttle insert (6) is inserted in channel P of the pilot control valve.

Attention!

The pilot oil supply may only be modified by authorized specialists or at the factory!

External pilot oil supply X or return Y:

  • with NG10, version SO30 has to be used if sandwich plates are installed. The identification SO30 has to be used at the end of the type designation (sandwich plate).
  • the maximum admissible operating parameters of the pilot control valve must be observed!
  • maximum pilot pressure: please observe the Technical data!

Internal pilot oil supply (version “ET” and “E”):

  • minimum pilot pressure: please observe the Technical data!
  • to prevent inadmissibly high pressure peaks, a “B10” throttle insert must be provided in port P of the pilot control valve.

Type code

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

19

WHH

/

6

/

*

01

Up to 280 bar

no code

02

3-way version

3

4-way version

4

Types of actuation

03

hydraulic-hydraulic

WHH

Size

04

NG10

10

NG16

16

NG25 (type 4W.H 22 .7X/…)

22

NG25 (type 4W.H 25 .6X/…)

25

Size 32

32

Spool return in the main valve

05

By means of springs

no code

hydraulic

3)

H

06

Symbols; for the possible version, see "Symbols/Circuit diagrams"

Component series

07

40 to 49 – NG10 (40 to 49: unchanged installation and connection dimensions)

4X

60 to 69 – NG25 (4W.H 25.) and NG32 (60 to 69: unchanged installation and connection dimensions)

6X

70 to 79 – NG16 (from series 72) and NG25 (4W.H 22.) (70 to 79: unchanged installation and connection dimensions)

7X

Spool return in the pilot control valve with 2 spool positions only possible with spools B, C, D and hydraulic control spool return in the main valve:

08

With spring return

no code

Without spring return

O

Without spring return with detent

OF

Pilot control valve

09

with fluidic actuation (standard valve)

6

10

Without manual override

no code

11

External pilot oil supply, external pilot oil return

1)

no code

Internal pilot oil supply, external pilot oil return

1; 2)

E

Pilot oil supply internal, pilot oil return internal

2)

ET

External pilot oil supply, internal pilot oil return

1)

T

12

Without switching time adjustment

no code

Switching time adjustment as supply control

S

Switching time adjustment as discharge control

S2

Spool position monitoring

13

Without position switch

no code

Monitored spool position "a"

QMAG24

Monitored spool position "b"

QMBG24

Monitored spool position "a" and "b"

QMABG24

Monitored rest position

QM0G24

14

Stroke setting see stroke setting in type key table

Throttle insert

15

Without throttle insert

no code

Throttle Ø 0.8 mm

B08

Throttle Ø 1.0 mm

B10

Throttle Ø 1.2 mm

B12

Throttle Ø 1.5 mm

B15

Throttle Ø 2.0 mm

B20

Throttle Ø 2.5 mm

B25

preload valve (not for NG10)

4)

16

without preload valve

no code

with preload valve (pö = 4.5 bar)

P4,5

17

without pressure reducing valve

no code

With pressure reducing valve

D3 4)

Seal material

18

NBR seals

no code

FKM seals (other seals upon request)

V

Observe compatibility of seals with hydraulic fluid used.

19

Information in the plain text

*

1) External pilot oil supply X or return Y:

– with NG10, version SO30 has to be used if sandwich plates are installed. The identification SO30 has to be used at the end of the type designation (sandwich plate).

– the maximum admissible operating parameters of the pilot control valve must be observed!

– observe the maximum pilot pressure!

2) Internal pilot oil supply (version “ET” and “E”):

– minimum pilot pressure: please observe the Technical data!

– to prevent inadmissibly high pressure peaks, a “B10” throttle insert must be provided in port P of the pilot control valve (see Pilot oil supply).

3) 2 spool positions (hydraulic end position): only piston C, D, Y, K ,Z

4) only in connection with throttle insert “B10”

pSt

Pilot pressure

ppilot min

Pilot pressure, minimum

ptank

Tank pressure

pö

Cracking pressure

Preferred types and standard units are contained in the EPS (standard price list).

Technical data

general

Size

101625 (4W.H22)25 (4W.H25)32

Weight (approx.)

2 spool positions

kg

6.991218.1

3 spool positions

kg

6.88.911.91941

Switching time adjustment

kg

0.8

Pressure reducing valve

kg

0.4

Installation position

any; horizontal with valves with hydraulic control spool return “H” and spool symbol B, C, D, K, Z, Y

Ambient temperature range

°C

-30 … +50

Storage temperature range

°C

-20 … +70

Surface protection

Valve body

Coating, layer thickness max. 100 μm

hydraulic

Size

101625 (4W.H22)25 (4W.H25)32

Maximum operating pressure

Port P

bar

280

Anschluss A

bar

280

Port B

bar

280

Port T

External pilot oil return Y

bar

280250

Internal pilot oil return Y 1)

bar

160

Port Y

Pilot oil return, external

bar

160

Hydraulic fluid 2)

see table

Hydraulic fluid temperature range

NBR seals

°C

-30 … +80

FKM seals

°C

-20 … +80

Viscosity range

mm²/s

2.8 … 500

Maximum admissible degree of contamination of the hydraulic fluid 3)

Class 20/18/15 according to ISO 4406 (c)

Maximum pilot pressure 4)

bar

250210250

Minimum pilot pressure

External or internal pilot oil supply X (with control spool D, K, E, J, L, M, Q, R, U, W)

3-spool position valve, spring-centered

bar

101410.5138.5

3-spool position valve, pressure-centered

bar

-14-188.5

2-spool position valve with spring end position

bar

1014111310

2-spool position valve with hydraulic end position

bar

71485

Internal pilot oil supply X (with control spool C, F, G, H, P, T, V, Z, S)

bar

4.5 5)4.5 6) 7)4.5 7)

Pilot volume for switching process

3-spool position valve, spring-centered

cm³

2.045.727.6414.229.4

2-spool position valve

from zero position in switching position “a”

cm³

4.0811.4515.2828.458.8

from switching position “a” in zero position

cm³

-2.9-715.1

from zero position in switching position “b”

cm³

-5.72-14.1529.4

from switching position “b” in zero position

cm³

-2.83-5.7314.4

Pilot flow for shortest switching time, approx.

l/min

3545
1)As a 3-spool position valve, pressure-centered only possible if ppilot ≥ 2 x ptank + ppilot min
2)The ignition temperature of the process and operating medium used must be over the maximum solenoid surface temperature.
3)The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.
4)Internal pilot oil supply: With a higher pilot pressure, use of a “D3” pressure reducing valve is required.
5)For symbols C, F, G, H, P, T, V, Z, an internal pilot oil supply is only possible if the flow from P → T in the central position (for 3-spool position valve) or while crossing the central position (for 2-spool position valve) is so large that the pressure differential of P → T reaches a value of at least 6.5 bar.
6)Spool S only for NG16
7)For spools C, F, G,J, H, P, T, V, Z, S – by means of preload valve (not NG10) or correspondingly high flow. (Determination of the required flow, see preload valve)

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oil

HL, HLP

FKM, NBR

DIN 51524

Bio-degradable

Insoluble in water

HEES (synthetic esters)

FKM

VDMA 24568

HETG (rape seed oil)

FKM, NBR

Soluble in water

HEPG (polyglycols)

FKM

VDMA 24568

Other hydraulic fluids on request

Free flow cross-sections in zero position with spools Q, V and W

Size

101625 (4W.H22)25 (4W.H25)32

Spool Q

A – T; B – T

mm²

1332788378

Spool V

P – A

mm²

1332738373

A – T; B – T

mm²

1332848384

Spool W

A – T; B – T

mm²

2.46101420

The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12 x 1.

electrical

Connection voltage (DC voltage)

V

24

Voltage tolerance (connection voltage)

+30 %/-15 %

Admissible residual ripple

%

≤ 10

Max. load capacity

mA

400

Switching outputs

PNP transistor outputs, load between switching outputs and GND

Pinout

1

V

24

2, 4

Switching output

mA

400

3

Earthing (GND)

V

0

Inductive position switch type QM: electrical connection

(For applications outside these values, please consult us!)

Diagrams/characteristic curves

pSt min > 6 … 10 bar > Tank pressure

(measured with HLP46, ϑOil = 40 °C ±5 °C)

Size 10

Δp-qV characteristic curves

Piston

Spool position

Piston

Zero position

P – A

P – B

A – T

B – T

A – T

B – T

P – T

E, Y, D

2

2

4

5

F

1

4

1

4

F

3

6

G, T

4

2

2

6

G, T

7

H, C

4

4

1

4

H

1

3

5

J, K

1

2

1

3

L

2

3

1

4

L

3

M

4

4

3

4

P

4

1

3

4

P

7

5

Q, V, W, Z

2

2

3

5

R

2

2

3

U

3

3

3

4

U

4

B

2

2

Performance limits: (measured with HLP46, ϑoil = 40 ±5 °C)

NG10

2-spool position valve – qV max in l/min

Symbol

Operating pressure pmax in bar

70

140

210

280

350

X external – spring end position in the main valve 1) (with ppilot min = 12 bar)

C, D, K, Y, Z

160 l/min

160 l/min

160 l/min

160 l/min

160 l/min

X external – hydraulic end position in the main valve

H

160 l/min

150 l/min

G, T

160 l/min

160 l/min

F, P

160 l/min

140 l/min

Size 16

Δp-qV characteristic curves

Symbol

Spool position

Zero position

P – A

P – B

A – T

B – T

P – T

A – T

B – T

D, E, Y

1

1

3

3

F

1

2

5

5

4

3

G

4

1

5

5

7

C, H

1

1

5

6

2

4

4

K, J

2

2

6

6

3

L

2

2

5

4

3

M

1

1

3

4

P

2

1

3

6

5

Q

1

1

6

6

R

2

4

7

S

3

3

3

9

T

4

1

5

5

7

U

2

2

3

4

6

V, Z

1

1

6

6

10

8

8

W

1

1

3

4

Performance limits: (measured with HLP46, ϑoil = 40 ±5 °C)

NG16

2-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external, spring end position in the main valve
(with ppilotmin = 12 bar)

C, D, K, Y, Z

300 l/min

300 l/min

300 l/min

300 l/min

X external – spring end position in the main valve

1)

C

300 l/min

300 l/min

300 l/min

300 l/min

D, Y

300 l/min

270 l/min

260 l/min

250 l/min

K

300 l/min

250 l/min

240 l/min

230 l/min

Z

300 l/min

260 l/min

190 l/min

180 l/min

X external – hydraulic end position in the main valve

HC, HD, HK, HZ, HY

300 l/min

300 l/min

300 l/min

300 l/min

Attention!
1) If the specified flow values are exceeded, the function of the return spring is no longer guaranteed if the pilot pressure fails!

3-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring-centered

E, H, J, L, M, Q, U, W, R

300 l/min

300 l/min

300 l/min

300 l/min

F, P

300 l/min

250 l/min

180 l/min

170 l/min

G, T

300 l/min

300 l/min

240 l/min

210 l/min

S

300 l/min

300 l/min

300 l/min

250 l/min

V

300 l/min

250 l/min

210 l/min

200 l/min

X external – pressure-centered (at minimum pilot pressure of 16 bar)

all spools

2)

300 l/min

300 l/min

300 l/min

300 l/min

2) With spool V, the pilot control valve is not required for flows > 160 l/min.

(measured with HLP46, ϑOil = 40 ±5 °C)

Size 25 (type W.H 22)

Δp-qV characteristic curves

Piston

Spool position

Piston

Zero position

P – A

P – B

A – T

B – T

B – A

A – T

B – T

P – T

C, E, M, P, Q, U, V, Z

2

2

1

4

F

4

F

1

2

1

2

G, P

6

G, T

2

2

2

4

H

2

H, J, W, K, D

2

2

1

3

L

4

L

2

2

1

2

T

5

R

1

2

1

5

U

6

B

2

2

Performance limits: (measured with HLP46, ϑoil = 40 ±5 °C)

NG25 (type W.H 22)

2-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring end position in the main valve (with ppilot min = 11 bar / 14 bar)

C, D, K, Y, Z

450 l/min

450 l/min

450 l/min

450 l/min

X external – spring end position in the main valve

1)

C

450 l/min

450 l/min

320 l/min

250 l/min

D, Y

450 l/min

450 l/min

450 l/min

400 l/min

K

450 l/min

215 l/min

150 l/min

120 l/min

Z

350 l/min

300 l/min

290 l/min

260 l/min

X external – hydraulic end position in the main valve

HC, HD, HK, HZ, HY

450 l/min

450 l/min

450 l/min

450 l/min

HC./O...

HD./O...

HK./O...

HZ./O...

450 l/min

450 l/min

450 l/min

450 l/min

HC./OF...

HD./OF...

HK./OF...

HZ./OF...

450 l/min

450 l/min

450 l/min

450 l/min

3-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring-centered

E, J, L, M, Q, U, W, R

450 l/min

450 l/min

450 l/min

450 l/min

H

450 l/min

450 l/min

300 l/min

260 l/min

G

400 l/min

350 l/min

250 l/min

200 l/min

F

450 l/min

270 l/min

175 l/min

130 l/min

V

450 l/min

300 l/min

240 l/min

220 l/min

T

400 l/min

300 l/min

240 l/min

200 l/min

P

450 l/min

270 l/min

180 l/min

170 l/min

Symbol

Spool position

Zero position

P – A

P – B

A – T 1)

B – T 1)

A – T

B – T

P – T

E, Y, D

1

1

3

4

F

1

1

2

4

2

5

G, T

1

1

2

5

7

H

1

1

2

5

2

2

4

C

1

1

2

5

J

1

1

2

5

6

5

K

1

1

2

5

L

1

1

2

4

5

M

1

1

3

4

P

1

1

3

5

3

5

Q

1

1

2

3

R

1

1

3

U

1

1

2

5

5

V

1

1

2

5

8

7

Z

1

1

2

5

W

1

1

3

4

8 Symbol R, spool position B – A

1)The pressure differential refers to the use of port T. If port T1 is additionally used, the pressure differential maybe lower. If only port T1 is used, the relations A – T and B – T may be reversed.

7

Spool G central position P – T

8

Spool T central position P – T

Performance limits: (measured with HLP46, ϑoil = 40 ±5 °C)

NG25 (type W.H 25)

2-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring end position in the main valve (with ppilotmin = 13 bar)

C, D, K, Y, Z

700 l/min

700 l/min

700 l/min

700 l/min

X external – spring end position in the main valve

1)

C

700 l/min

700 l/min

700 l/min

700 l/min

D, Y

700 l/min

650 l/min

400 l/min

350 l/min

K

700 l/min

650 l/min

420 l/min

370 l/min

Z

700 l/min

700 l/min

650 l/min

480 l/min

X external – hydraulic end position in the main valve

HC, HD, HK, HZ, HY

700 l/min

700 l/min

700 l/min

700 l/min

HC./O...

HD./O...

HK./O...

HZ./O...

700 l/min

700 l/min

700 l/min

700 l/min

HC./OF...

HD./OF...

HK./OF...

HZ./OF...

700 l/min

700 l/min

700 l/min

700 l/min

3-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring-centered

E, L, M, Q, U, W

700 l/min

700 l/min

700 l/min

700 l/min

G, T

400 l/min

400 l/min

400 l/min

400 l/min

F

650 l/min

550 l/min

430 l/min

330 l/min

H

700 l/min

650 l/min

550 l/min

400 l/min

J

700 l/min

700 l/min

650 l/min

600 l/min

p

650 l/min

550 l/min

430 l/min

330 l/min

V

650 l/min

550 l/min

400 l/min

350 l/min

R

700 l/min

700 l/min

700 l/min

650 l/min

X external – pressure-centered (at minimum pilot pressure of 18 bar)

E, F, H, J, L, M, P, Q, R, U, V, W

700 l/min

700 l/min

700 l/min

700 l/min

G, T

400 l/min

400 l/min

400 l/min

400 l/min

X external – pressure-centered (with pilot pressure > 30 bar)

G, T

700 l/min

700 l/min

700 l/min

700 l/min

Attention!
1) If the specified flow values are exceeded, the function of the return spring is no longer guaranteed if the pilot pressure fails!

Size 32

∆p-qv-characteristic curves – Symbol E, R and W

Piston

Spool position

P – A

P – B

A – T

B – T

B – A

E

4

4

3

2

R

4

4

3

1

W

4

4

3

2

Size 32

∆p-qv- characteristic curves – Symbol G and T

Piston

Spool position

P – A

P – B

A – T

B – T

P – T

G

7

8

7

5

6

T

7

8

7

5

6

Performance limits: (measured with HLP46, ϑoil = 40 ±5 °C)

Size 32

2-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring end position in the main valve (with ppilot min = 10 bar)

C, D, K, Y, Z

1100 l/min

1040 l/min

860 l/min

750 l/min

X external – spring end position in the main valve

1)

C

1100 l/min

1040 l/min

860 l/min

800 l/min

D, Y

1100 l/min

1040 l/min

540 l/min

480 l/min

K

1100 l/min

1040 l/min

860 l/min

500 l/min

Z

1100 l/min

1040 l/min

860 l/min

700 l/min

X external – hydraulic end position in the main valve

HC, HD, HK, HZ, HY

1100 l/min

1040 l/min

860 l/min

750 l/min

3-spool position valve – qV max

Piston

Operating pressure pmax in bar

70 bar

140 bar

210 bar

280 bar

X external – spring-centered

E, J, L, M, Q, U, W

1100 l/min

1040 l/min

860 l/min

750 l/min

G, T, H, F, P

900 l/min

900 l/min

800 l/min

650 l/min

V

1100 l/min

1000 l/min

680 l/min

500 l/min

X external – pressure-centered (at minimum pilot pressure of 8.5 bar)

all spools

1100 l/min

1040 l/min

860 l/min

750 l/min

1) If the specified flow values are exceeded, the function of the return spring is no longer guaranteed if the pilot pressure fails!

Performance limits: important information

Notice (applies to all sizes):

The specified switching power limits apply to the use with two directions of flow (e. g. from P to A and simultaneous return flow from B to T at a ratio of 1:1). Due to the flow forces acting within the valves, the admissible switching power limit may be considerably lower with only one direction of flow (e. g. from P to A while port B is blocked, with flow in the same or in different directions)! In such cases of application, please consult us!

The switching power limit was established while the solenoids were at operating temperature, at 10% undervoltage, and without tank preloading.

Attention!

NG16

  • With pilot oil supply X internal , a preload valve has to be used for flows < 160 l/min due to the negative overlap of the symbols C, Z and HC, HZ.
  • 4/3 directional valves with pressure centering of the control spool in the main valve can be used above the indicated performance limit. In this case, a higher pilot pressure is required (values see performance limits of the corresponding size).
  • With pilot oil supply X internal, sufficient flow needs to be ensured due to the negative overlap of symbols F, G, H, P, S and T (for determination of the required flow, see "Preload valve" characteristic curves). If the required flow is not reached, a preload valve has to be used (see "Technical data").

NG25

  • With pilot oil supply X internal, a preload valve has to be used for flows < 180 l/min due to the negative overlap of pistons Z, HZ and V.
  • With pilot oil supply X internal, sufficient flow needs to be ensured due to the negative overlap of symbols C, HC, F, G, H, P and T (for determination of the required flow, see "Preload valve" characteristic curves). If the required flow is not reached, a preload valve has to be used (see "Technical data").

NG32

  • With pilot oil supply X internal, a preload valve has to be used for flows < 180 l/min due to the negative overlap of pistons Z, HZ and V.
  • 4/3 directional valves with pressure centering of the control spool in the main valve can be used above the indicated performance limit. In this case, a higher pilot pressure is required (values see performance limits of the corresponding size).
  • With pilot oil supply X internal, sufficient flow needs to be ensured due to the negative overlap of symbols C, HC, F, G, H, P and T (for determination of the required flow, see "Preload valve" characteristic curves). If the required flow is not reached, a preload valve has to be used (see "Technical data").

At a higher tank pressure, the minimum pilot pressure has to be increased according to this diagram.

Size 25 (type W.H 25)

Δp-qV characteristic curves

Symbols/Circuit diagrams

Version QM0

Position switch on side A, monitored spool position of the main stage "0"

Version QM0

Position switch on side B, monitored spool position of the main stage "0"

Version QM0

Position switch on side A and B, monitored spool position "0"

version QMAB

Position switch on side A and B, monitored spool position "a" and "b"

Version QMB

Position switch on side A, monitored spool position of the main stage "b"

Version QMB

Position switch on side A, monitored spool position of the main stage "b"

Version QMA

Position switch on side B, monitored spool position of the main stage "a"

Version QMA

Position switch on side B, monitored spool position of the main stage "a"

Inductive position switch type QM Switching logics

1)only for NG10 and 25 (4W.H 22.) if operating pressure > tank pressure, port T is to be used as a leakage port!
2)only type WMRH/WMUH and WMMH available.

2 spool positions

Attention!

Caution in conjunction with differential cylinders due to pressure intensification!

Attention!

Caution in conjunction with differential cylinders due to pressure intensification!

3 spool positions

2 spool positions

Order details

Type of actuation

Symbol

Actuating side

hydraulic

E, F, G, H, J, L, M, Q, R, S, T, U, V, W

.A

.B

Order details

Type of actuation

Symbol

Spool return

hydraulic

C, D, K, Z

../..

..H../O

..H../OF

B, Y

../..

Y

..H../..

3) Example: – Spool E with actuating side “a” → ordering code ..EA.. – Spool E with actuating side “b” → ordering code ..EB..
4) Spool symbol E1-: P → A/B pre-opening

Dimensions

NG10

Dimensions in mm

1

Main valve

2

Pilot control valve: For unit dimensions, see basic data sheets

3

Manual override, “N”, optional

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for actuation, separate order, material no. R900024943).

5

Switching time adjustment (wrench size 6), optional

6

Pressure reducing valve, optional

7.1

Machined valve contact surface; porting pattern according to ISO 4401-05-05-0-05

8

Seal rings

9

Name plate complete valve

NG16

Dimensions in mm

1

Main valve

2

Pilot control valve: For unit dimensions, see basic data sheets

3

Manual override, “N”, optional

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for actuation, separate order, material no. R900024943).

4

Locking pin

5

Switching time adjustment (wrench size 6), optional

6

Pressure reducing valve, optional

7.2

machined valve contact surface; porting pattern according to ISO 4401-07-07-0-05

8

Seal rings

9

Name plate complete valve

10

2-spool position valves with spring end position in the main valve (spool symbols A, C, D)

11

2-spool position valves with spring end position in the main valve (symbols B, Y)

12

3-spool position valves, spring-centered;
2-spool position valves with hydraulic end position in the main valve

NG25 (type W.H 22)

Dimensions in mm

1

Main valve

2

Pilot control valve: For unit dimensions, see basic data sheets

3

Manual override, “N”, optional

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for actuation, separate order, material no. R900024943).

4

Locking pin

5

Switching time adjustment (wrench size 6), optional

6

Pressure reducing valve, optional

7.3

machined valve contact surface; porting pattern according to ISO 4401-08-08-0-05

8

Seal rings

9

Name plate complete valve

NG25 (type W.H 25)

Dimensions in mm

1

Main valve

2

Pilot control valve: For unit dimensions, see basic data sheets

3

Manual override, “N”, optional

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for actuation, separate order, material no. R900024943).

4

Locking pin

5

Switching time adjustment (wrench size 6), optional

6

Pressure reducing valve, optional

7.3

machined valve contact surface; porting pattern according to ISO 4401-08-08-0-05

8

Seal rings

9

Name plate complete valve

10

2-spool position valves with spring end position in the main valve (spool symbols A, C, D)

11

2-spool position valves with spring end position in the main valve (symbols B, Y)

12

3-spool position valves, spring-centered;
2-spool position valves with hydraulic end position in the main valve

13

3-spool position valves, pressure-centered

Size 32

Dimensions in mm

1

Main valve

2

Pilot control valve: For unit dimensions, see basic data sheets

3

Manual override, “N”, optional

Actuation of the manual override is only possible up to a tank pressure of approx. 50 bar. Avoid damage to the bore of the manual override! (Special tool for actuation, separate order, material no. R900024943).

4

Locking pin

5

Switching time adjustment (wrench size 6), optional

6

Pressure reducing valve, optional

7.4

Machined valve contact surface; porting pattern according to ISO 4401-10-09-0-05

8

Seal rings

9

Name plate complete valve

10

2-spool position valves with spring end position in the main valve (spool symbols A, C, D)

11

2-spool position valves with spring end position in the main valve (symbols B, Y)

12

3-spool position valves, spring-centered;
2-spool position valves with hydraulic end position in the main valve

13

3-spool position valves, pressure-centered

Subplates (separate order)

– NG10 (according to data sheet 45054)

  • without port X, Y:

G 534/01 (G3/4)

G 534/12 (SAE-12; 1 1/16-12)1)

  • with port X, Y:

G 535/01 (G3/4)

G 536/01 (G1)

G 535/12 (SAE-12; 1 1/16-12)1)

G 536/12 (SAE-16; 1 5/16-12)1)

– NG16 (according to data sheet 45056)

G 172/01 (G3/4)

G 172/02 (M27 x 2)

G 174/01 (G1)

G 174/02 (M33 x 2)

G 174/08 (flange)

G 172/12 (SAE-12; 1 1/16-12)1)

G 174/12 (SAE-16; 1 5/16-12)1)

– NG25 (type W.H 22 according to data sheet 45058)

G 151/01 (G1)

G 154/01 (G1 1/4)

G 156/01 (G1 1/2)

G 155/12 (SAE-16; 1 5/16-12)1)

G 154/12 (SAE-20; 1 5/8-20)1)

G 156/12 (SAE-24; 1 7/8-20)1)

– NG25 (type W.H 25 according to data sheet 45058)

G 151/01 (G1)

G 153/01 (G1), for valves with pressure-centered zero position

G 154/01 (G1 1/4)

G 154/08 (flange)

G 156/01 (G1 1/2)

G 153/12 (SAE-16; 1 5/16-12)1)

G 154/12 (SAE-20; 1 5/8-20)1)

G 156/12 (SAE-24; 1 7/8-20)1)

– NG32 (according to data sheet 45060)

G 157/01 (G1 1/2)

G 157/02 (M48 x 2)

G 158/10 (flange)

G 157/12 (SAE-24; 1 7/8-12)1)

1) on request

Valve mounting screws (separate order)

– NG10:

4 metric hexagon socket head cap screws

ISO 4762 - M6 x 45 - 10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 to 0.14);

tightening torque MA = 12.5 Nm ± 10%,

material no. R913000258

4 hexagon socket head cap screws UNC

1/4-20 UNC x 1 3/4″ ASTM-A574

on request

– NG16:

4 metric hexagon socket head cap screws

ISO 4762 - M10 x 60 - 10.9-flZn-240h-L

(friction coefficientμtotal = 0.09 to 0.14);

tightening torqueMA = 75 Nm ± 10%,

material no. R913000116

2 metric hexagon socket head cap screws

ISO 4762 - M6 x 60 - 10.9-flZn-240h-L

(friction coefficientμtotal = 0.09 to 0.14);

tightening torque MA = 12.5 Nm ± 10%,

material no. R913000115

4 hexagon socket head cap screws UNC

3/8-16 UNC x 2 1/4″ ASTM-A574

on request

2 hexagon socket head cap screws UNC

1/4-20 UNC x 1/4″ ASTM-A574

on request

– NG25:

6 metric hexagon socket head cap screws

ISO 4762 - M12 x 60 - 10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 to 0.14);

tightening torqueMA = 130 Nm ± 10%,

material no. R913000121

6 hexagon socket head cap screws UNC

1/2-13 UNC x 2 1/2″ ASTM-A574

on request

– NG32:

6 metric hexagon socket head cap screws

ISO 4762 - M20 x 80 - 10.9-flZn-240h-L

(friction coefficient μtotal = 0.09 to 0.14);

tightening torque MA = 430 Nm ± 10%,

material no. R901035246

6 hexagon socket head cap screws UNC

3/4-10 UNC x 3 1/4″ ASTM-A574

on request

The stroke of the control spool (1) is limited by the stroke setting.

The piston stroke is shortened by loosening the lock nut (2) and clockwise rotation of the adjustment spindle (3). The control chamber (4) must be depressurized for this.

NG

L4

mm

106.5
1610
25 (4W.H22)9.5
25 (4W.H25)12.5
3215

Stroke setting, mounting options

5 adjustment range

– NG10:

1 rotation = 1 mm adjustment travel

– NG16 to 32:

1 rotation = 1.5 mm adjustment travel

Stroke setting, mounting options

Stroke limitation on side A

Stroke setting, mounting options

Stroke limitation on side B

Mounting options

NG

3-spool position valve

1)

Spring-centered

Pressure-centered

L1 (mm)

L2 (mm)

L3 (mm)

L1 (mm)

L2 (mm)

L3 (mm)

Stroke setting on valve side A and B

10

90

144

234

16

100

200

300

25 2)

96

241

337

25 3)

123

276

399

32

133

344

477

Stroke setting on valve side A

10

90

106

196

16

100

156

256

25 2)

96

193

289

25 3)

123

225

348

32

133

287

420

Stroke setting on valve side B

10

52

144

196

16

56

200

256

81

200

281

25 2)

48

241

289

25 3)

72

276

348

107

276

283

32

76

344

420

120

344

464

1)With symbol A only version "11", with symbol B only version "12" possible.
2)Version "W.H 22"
3)Version "W.H 25"
1) With symbol A only version "11", with symbol B only version "12" possible.
2) Version "H-WEH 22"
3) Version "H-WEH 25"

Mounting options

NG

2-spool position valve

Spring end position

Hydraulic end position

A, C, D, K, Z

B, Y

HC, HD, HK, HZ, HY

L1 (mm)

L2 (mm)

L3 (mm)

L1 (mm)

L2 (mm)

L3 (mm)

L1 (mm)

L2 (mm)

L3 (mm)

Stroke setting on valve side A and B

10

90

144

234

90

144

234

90

144

234

16

100

200

300

25 1)

96

241

337

96

241

337

96

241

337

25 2)

123

276

399

32

133

344

477

Stroke setting on valve side A

10

90

106

196

90

106

196

16

100

180

280

100

156

256

25 1)

96

193

289

96

193

289

96

193

289

25 2)

123

253

376

123

225

348

32

133

316

449

133

287

420

Stroke setting on valve side B

10

52

144

196

52

144

196

52

144

196

16

80

200

280

56

200

256

25 1)

48

241

289

48

241

289

48

241

289

25 2)

100

276

376

72

276

348

32

105

344

449

76

344

420

1)Version "W.H 22"
2)Version "W.H 25"
1) Type 4W.H 22
2) Type 4W.H 25

Spool position monitoring

Dimensions in mm

Inductive position switch type QM

Dimensions in mm

1)Without mating connector

Notice:

The dimensions are nominal dimensions which are subject to tolerances.

Mounting options – 2-spool position valve

Monitored spool position

Ordering code

NG

Hydraulic end position

HC, HD, HK, HZ

Spring end position

C, D, K, Z

Spring end position

Y

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

„a“

Position switch on side B

QMAG24

10

211

57

211

57

211

57

16

259

55

259

55

25 2)

294

47

294

47

294

47

25 3)

325

72

325

72

32

371

76

371

76

„b“

Position switch on side A

QMBG24

10

157

111

157

111

157

111

16

159

155

159

155

25 2)

149

192

149

192

149

192

25 3)

172

225

172

225

32

161

287

161

287

"a" and "b"

Position switch on side A and B

QMABG24

10

157

211

157

211

157

211

16

159

259

25 2)

149

294

149

294

149

294

25 3)

172

325

32

161

371

1)Without mating connector
2)Version "W.H 22"
3)Version "W.H 25"
1) Without mating connector
2) Type 4W.H 22..
3) Type 4W.H 25..

Mounting options – 3-spool position valve

Monitored spool position

Ordering code

NG

Spring-centered

Pressure-centered

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

„a“

Position switch on side B

QMAG24

10

211

57

16

259

55

259

81

25 2)

294

47

25 3)

325

72

325

107

32

371

76

371

120

„b“

Position switch on side A

QMBG24

10

157

111

16

159

155

25 2)

149

192

25 3)

172

225

32

161

287

"a" and "b"

Position switch on side A and B

QMABG24

10

157

211

16

159

259

25 2)

149

294

25 3)

172

325

32

161

371

Zero position

Position switch on side A and B

2 position switches

QM0G24

4)

10

157

211

16

159

259

25 2)

149

294

25 3)

172

325

32

161

371

1)Without mating connector
2)Version "W.H 22"
3)Version "W.H 25"
4)3-spool position valve
1) Without mating connector
2) Type 4W.H 22
3) Type 4W.H 25
4) 3-spool position valve

Mounting options – 3-spool position valve with one solenoid

Monitored spool position

Ordering code

NG

Side A (EA, FA…)

Spring-centered

Solenoids on side B (EB, FB…)

Spring-centered

Side A (EA, FA…)

Pressure-centered

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

L1 (mm) 1)

L2 (mm) 1)

L3 (mm)

L4 (mm)

„a“

Position switch on side B

QMAG24

10

211

57

16

259

55

259

81

25 2)

294

47

25 3)

325

72

325

107

32

371

371

120

„b“

Position switch on side A

QMBG24

10

157

111

16

159

155

25 2)

149

192

25 3)

172

225

32

161

287

Zero position

Position switch on side A or B

1 position switches

QM0G24

​4)

10

211

57

157

111

16

259

55

159

155

259

81

25 2)

294

47

149

192

25 3)

325

72

172

225

325

107

32

371

76

161

287

371

120

1) Without mating connector
2) Type 4W.H 22..
3) Type 4W.H 25..
4) 2-spool position valve

Project planning information

Switching time adjustment

Type 4W.H 10 ..4X/…S, type 4W.H 10 ..4X/…S2

The switching time of the main valve (1) is influenced by using a twin throttle check valve (2) (type Z2FS 6; data sheet 27506).

Modification of supply (3) to discharge control (4):

Remove the pilot control valve (5) – The plate (6) to accept the seal rings stays in place – Turn the switching time adjustment (2) around its longitudinal axis and put it back, install the pilot control valve (5).

Notice:

The modification may only be performed by authorized specialists or at the factory!

"D3” pressure reducing valve

Notice:

  • If a pressure reducing valve "D3" (8) is used, a "B10" throttle insert has to be installed in channel P of the pilot control valve.
  • The modification may only be performed by authorized specialists or at the factory!

Type 4W.H 10 ..4X/…/..D3

In case of valves with depressurized circulation and internal pilot oil supply, the installation of the preload valve (9) in channel P of the main valve is required in order to build up the minimum pilot pressure.

The pressure differential of the preload valve is to be added to the pressure differential of the main valve (see characteristic curves) to result in one total value.

The cracking pressure is approx. 4.5 bar.

9.1

Preload valve NG16

9.2

Preload valve NG25 and NG32

10

Main valve

11

Subplate

Type

Material number P4,5

4W.H 16

R901002365

4W.H 22

R900315596

4W.H 25

R900303717

4W.H 32

R900317066

Δp–qVcharacteristic curve (measured with HLP46, ϑOil = 40 °C ± 5 °C)

The pressure reducing valve (8) has to be used at a pilot pressure above 250 bar (with type 4W.H 22 …: 210 bar) and with version “H”.

The secondary pressure is kept at a constant level of 45 bar.

The secondary pressure is kept at a constant level of 45 bar.

Preload valve (not for NG10)

1

NG16

2

NG25 (type 4W.H 25 …)

3

NG25 (type 4W.H 22 …)

4

Size 32

Downloads

3/2, 4/2 and 4/3 directional valves, internally pilot operated, externally pilot operated
Data Sheet | RE24851 | 2008-08-01 | English | PDF | 1.1MB

Product Groups: Pilot operated
Types WPH, WHH, WMMH, WMDH, WMDAH, WMRH and WMUH
3/2, 4/2 and 4/3 directional valves pilot operated
Manual | RE24851-B | 2009-06-01 | English | PDF | 380k

Product Groups: Pilot operated
Type WPH, WHH, WMMH, WMDH, WMDAH, WMRH, and WMUH

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Bosch Rexroth открывает новые возможности в управлении машинами и подключении к IoT

Bosch Rexroth предлагает одну из самых производительных систем ЧПУ на рынке. Компания является лидером в области автоматизации и устанавливают стандарты в этой области. От датчиков и сервоприводов до революционной новой платформы, Bosch Rexroth предлагает широкий спектр решений для автоматизации. ..

16 Февраля, 2024
Bosch Rexroth и TotalEnergies объединяют свои усилия для продвижения альтернативных и экологичных гидравлических жидкостей

Bosch Rexroth и TotalEnergies (французская нефтегазовая компания) 18 декабря 2023 года подписали соглашение сотрудничестве, направленном на разработку, внедрение и маркетинг гидравлических жидкостей на водной основе, с акцентом на экологичность, огнестойкость и производительность. Данный союз отр..

11 Января, 2024
Bosch Rexroth представляет Интеллектуальный функциональный набор для обработки данных Smart Function Kit for Handling

Компания Bosch Rexroth является одним из ведущих мировых производителей и поставщиков технологий и услуг в области промышленной автоматизации. Это производитель рад представить вам свой интеллектуальный функциональный набор для обработки данных. Это инновационное оборудование, с помощью которого п..

4 Декабря, 2023
Бренд Bosch Rexroth представил миру свою разработку - оборудование IndraDrive CDB02 - BASIC для двухосевого блока управления

Bosch Rexroth, являясь ведущим производителем промышленного оборудования, не стоит на месте и разрабатывает новое оборудование. Одним из изобретений этой компании является IndraDrive CDB02 - BASIC. Это двухосевой блок управления, который предназначен для использования в различных промышленных сект..

1 Декабря, 2023
Bosch Rexroth: высокоскоростной асинхронный двигатель 1MB140 

Производитель Bosch Rexroth представил свою разработку - высокоскоростной асинхронный двигатель 1MB140. Этот продукт обладает рядом уникальных характеристик и предназначен для различных применений в промышленности. Основным назначением двигателя 1MB140 является обеспечение высокой скорости вращ..

30 Ноября, 2023
Bosch Rexroth рассказывает о характеристиках электрогидравлических насосов

Bosch Rexroth представляет электрогидравлические насосы, которые объединяют в себе преимущества электрической и гидравлической технологий. Данные насосы могут использоваться в различных отраслях промышленности, включая машиностроении, автомобильной промышленности, энергетике и других. Основная ..

29 Ноября, 2023
Bosch Rexroth представил серию высокоэффективных синхронных моментных двигателей МВТ130 

Синхронные моментные двигатели МВТ130 применяются в различных отраслях промышленности: машиностроение, автомобильной и энергетической промышленности. Это оборудование используют как дополнение к насосам, компрессорам, приводам конвейеров и другим механизмам, требующим точного управления и высокой ..

28 Ноября, 2023
Bosch Rexroth: надежные и эффективные героторные насосы подходят для решения для множества задач

Героторные насосы Bosch Rexroth — это инновационное оборудование, которое обеспечивает эффективную работу в различных областях промышленности. Они являются незаменимым компонентом в системах гидравлического привода и обеспечивают надежную и плавную работу механизмов. Принцип работы герото..

27 Ноября, 2023
Для эффективной работы гидравлических систем Bosch Rexroth представляет баллонный аккумулятор HAB2 

Баллонный аккумулятор HAB2 производства компании Bosch Rexroth — это инновационное оборудование, предназначенное для оптимизации работы гидравлических систем и обеспечения более эффективного использования энергии. Баллонный аккумулятор HAB2 выполняет несколько важных функций. Во-первых, с..

24 Ноября, 2023
Bosch Rexroth: инновационное решение для удобства и эффективности работы - выдвижная клавиатура VAK40 

Торговая марка Bosch Rexroth, является одним из мировых лидеров в области промышленной автоматизации, и представляет свою разработку - выдвижную клавиатуру VAK40. Это инновационное устройство, которое обеспечивает удобную и эффективную работу операторов в промышленных условиях. Установить выдви..

23 Ноября, 2023
Bosch Rexroth: инновационные функции и простая установка дисплея 19" VDP60

Бренд Bosch Rexroth рад представить свою разработку - дисплей 19" VDP60, который обещает стать настоящим прорывом в мире технологий. Этот дисплей не только показывает изображения высокого качества, но и предлагает ряд функций, которые помогут решить множество задач. Одним из главных свойст..

22 Ноября, 2023
Rexroth: Шестеренные насосы с внешним зацеплением – надежное решение для эффективной работы в различных отраслях

Компания Rexroth представляет шестеренные насосы с внешним зацеплением, которые являются необходимым прибором в области гидравлики. Они выполняют важную задачу – обеспечивают надежную и эффективную работу гидравлических систем в различных отраслях промышленности. Эти насосы нашли применен..

21 Ноября, 2023

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