InhaltTable of contents 1Features 1Ordering code 2Spool symbols 3Actuating elements 4Function, section 5Technical data (for applications outside these parameters, please consult us!) 6Actuating force/moment 6Characteristic curves (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F]) 7Performance limits (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F]) 7Performance limits (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F]) 8Unit dimensions (dimensions in mm [inch]) 9Unit dimensions (dimensions in mm [inch]) 10Unit dimensions 11Notes 12

1/124/3, 4/2 and 3/2 directional valve with mechanical, manual actuation

Types WMR, WMU, WMM, WMD(A) and WMRZ

RE 22280/10.07Replaces: 03.07

Table of contents Features

– Direct operated directional spool valve– Actuating elements: •Rollerplunger •Handlever •Rotaryknob

– Porting pattern to DIN 24340 Form A (without locating bore)– Porting pattern to ISO 4401-03-02-0-05,

NFPA T3.5.1 R2 and ANSI B93-7 D03 (with locating bore)– For subplates, see data sheet RE 45052 (separate order)– For inductive position switches and proximity sensors

(contact-free and floating), see RE 24830

H7114

Content PageFeatures 1Ordering code 2Standard types 2Spool symbols 3Actuating elements 4Function, section 5Technical data 6Actuating force/moment 6Characteristic curves 7Performance limits 7, 8Unit dimensions 9 to 11

Information on available spare parts: www.boschrexroth.com/spc

Size 6Component series 5X, 6XMaximum operating pressure 315 bar [4569 psi]Maximum flow 60 l/min [15.8 US gpm]

2/12 Bosch Rexroth AG Hydraulics WMR, WMRZ, WMU, WMM und WMD(A) RD 22280/10.07

Ordering code

3 main ports = 34 main ports = 4

Type of actuationRoller plunger 1) = WMRRoller plunger 1) = WMRZRoller plunger 1) = WMUHand lever = WMMRotaryknob = WMDRotaryknob,lockable2) = WMDA Size 6 = 6Spool symbols, e.g. C, E, EA, EB, etc. 3)

Component series 50 to 59 = 5X(50 to 59: unchanged installation and connection dimensions)Component series 60 to 69 (type WMRZ only) = 6X(60 to 69: unchanged installation and connection dimensions)With spring return = No code (available for WMR, WMRZ, WMU, WMM) With detent = F (available for WMM, WMD, WMDA)

Further details in clear textNo code = Without locating bore /60 4) = With locating bore/62 = With locating bore and locating

pin ISO 8752-3x8-StSeal material

No code = NBR seals V = FKM seals (other seals on request) Attention!

Observe compatibility of seals with hy-draulic fluid used!Clamping length

No code = 42 mm (standard)Z = 22 mm

No code = Without throttle insert B08 5) = Throttle Ø 0.8 mm B10 5) = Throttle Ø 1.0 mm B12 5) = Throttle Ø 1.2 mm

Spool position monitoring No code = Without position switchQMAG24 = Monitored spool position “a“QMBG24 = Monitored spool position “b“QM0G24 = Monitored rest position

6 *

1) See page 10.2) Key, Material no. R900006980, for series 50 to 52, and

R900008158 from series 53, included in the scope of supply.3) For spool symbols and examples, see pages 3 and 4.4) Locating pin ISO 8752-3x8-St, Material no. R900005694

(separate order)5) Use for flow > performance limits of the valve, effective in

P-channel.

Standard types and components can be found in the EPS (standard price list).

Spool symbols

= A

= C

= D

A B

P T

a b a b

A B

P T

a b a b

A B

P T

A B

P T

= B 2)

= Y 2)

= R

= T

= U

= V

= W

= P

= Q

= L

= M

= E 1)

= F

= G

= H

= J

= E1- 3)

= .B 1)

= .A 1)

A B

P T

a 0 a 0

A B

P T

A B

P T

0 b 0 b

A B

P T

A B

P T

a 0 a 0

A B

P T

b b

Hydraulics Bosch Rexroth AGRD 22280/10.07 WMR, WMRZ, WMU, WMM und WMD(A) 3/12

1) Example: –SpoolEwithspoolposition“a”→ ordering code ..EA.. –SpoolEwithspoolposition“b”→ ordering code ..EB..2) Only types WMR/WMU and WMM available.3) Symbol E1-:P→A/Bpre-opening

Attention!Caution due to pressure intensification on single rod cylinders!

4/12 Bosch Rexroth AG Hydraulics WMR, WMRZ, WMU, WMM und WMD(A) RD 22280/10.07

1) See spool symbols on page 32) Only available as 2-position valve

Ordering code Type of actuation

Spoo

l sy

mbo

l

Actu

atio

n si

de

Dete

nt Roller plungerType WMRZ 2)

Roller plungerType WMR, WMU

Hand leverType WMM

Rotary knobType WMD, WMDA

A, C, D,

EA, JA, GA

../F.. a b

A B

P T

a b

A B

P T

a 0

A B

P T

a b

A B

P T

a b

A B

P T

B, Y,

EA, JA, GA

0 b

A B

P T

a b

A B

P T

a b

A B

P T

../F.. a b

A B

P T

E1–, E, F, G, H, J, L M, P, Q, R, T, U, V, W

“a“ 1)

= .A

../F.. a 0

A B

P T

a 0

A B

P T

a 0

A B

P T

“b“ 1)

= .B

../F.. 0 b

A B

P T

0 b

A B

P T

0 b

A B

P T

../F.. 0 ba

A B

P T

0 ba

A B

P T

0 ba

A B

P T

0 b

A B

P T

a

Actuating elements

A T B(P)

2 1 3 4

A T B(P)

2 1 3 4P

A T B(P)

2 1 3 4

A T B(P)

1 3 42

Hydraulics Bosch Rexroth AGRD 22280/10.07 WMR, WMRZ, WMU, WMM und WMD(A) 5/12

Function, sectionValves of type WM.. are mechanically, manually operated di-rectional spool valves. They control the start, stop and direction of a flow.These directional valves basically consist of housing (1), an actuatingelement(2)(rollerplunger,handlever,rotaryknob),control spool (3), and one or two return springs (4).In the non-operated condition, control spool (3) is held in the central or initial position by return springs (4) – in the case of rotaryknobactuationbyadetent.The control spool (3) is shifted to the desired spool position by means of the actuating elements.DetentDirectionalvalveswithrotaryknobaregenerallydesignedwith a detent. Directional valves with hand lever are option-ally available as 2- or 3-position valves with detent. Direc-tional valves with roller plunger are generally designed with-out detent. When actuating elements with detent are used and depending on the valve type, every spool position can be locked.Throttle insertThe use of a throttle insert is required, when, due to given op-erating conditions, flows can occur during the switching pro-cesses that exceed the performance limit of the valve. These throttles are to be inserted into the P-channel of the di-rectional valve.

Type 4WMR 6 E5X/…

Type 4WMM 6 D5X/F

Type 4WMDA 6 E5X/F

Type 4WM. 6 ..5X/..B..

Type 4WMRZ 6 D6X/…

6/12 Bosch Rexroth AG Hydraulics WMR, WMRZ, WMU, WMM und WMD(A) RD 22280/10.07

Technical data (for applications outside these parameters, please consult us!)

HydraulicMaximum operating pressure

– Ports A, B, P bar [psi] 315 [4569]

– Port T: •WMM,WMD,WMDA bar [psi]

160 [2320]

With symbol A or B, port T must be usedasleakageoilport,iftheoperatingpressure is higher than the permissible tankpressure. •WMR,WMRZ,WMU bar [psi] 60 [900]

Maximum flow l/min [US gpm] 60 [16]

Flow cross-section – Spool symbol Q 6 % of nominal cross-section– Spool symbol W 3 % of nominal cross-section

Hydraulic fluid Mineral oil (HL, HLP) to DIN 51524 1); fast bio-degradable hydraulic fluids to VDMA 24568 (see also RE 90221); HETG (rape seed oil 1); HEPG (polyglycols) 2); HEES (synthetic esters) 2); other hydraulic fluids on request

Hydraulic fluid temperature range °C [°F] –30 to +80 [–22 to +176] (NBR seals) –20 to +80 [–4 to +176] (FKM seals)

Viscosity range mm2/s [SUS] 2.8 to 500 [35 to 2320]

Permissible max. degree of contamination of the hydraulic fluid - Cleanliness class to ISO 4406 (c)

Class 20/18/15 3)

1) Suitable for NBR and FKM seals2) Suitable only for FKM seals3) The cleanliness classes specified for components must be

adhered to in hydraulic systems. Effective filtration prevents malfunction and, at the same time, prolongs the service life of components.

GeneralWeight kg[lbs] ca. 1.4 [3.1]

Installation position Optional

Ambient temperature range °C [°F] –30 to +80 [–22 to +176] (NBR seals) –20 to +80 [–4 to +176] (FKM seals)

For the selection of filters, see data sheets RE 50070, RE 50076, RE 50081, RE 50086, RE 50087 and RE 50088.

Calculation formula for actuating force on roller plunger (FR)attankpressure:FR = Fo.T pressure + pT x 1.4 N/bar

Actuating force/momentType

WMR/WMUType WMM

Type WMD

Type WMRZ

Operating pressure

– Ports A, B, P bar [psi] 100 [1450]

200 [2900]

315 [4600]

315 [4600]

Actuating force at roller plunger

–Withouttankpressure N [lbs] 100 [22.5]

112 [25.2]

121 [27.2]

30 [6.7]

–Withtankpressure N [lbs] 184 [41.4]

196 [44.1]

205 [46.1]

160 [36]

(Tankpressure, max. pT) bar [psi] 60 bar [900 psi] – corre-sponds to 1.4 N [0.022 lbs]

pro bar [psi]oftankpressure

210 [47.2]

Maximum actuating moment Ncm [lb-in] – 150 [13.3]

Actuating force

– Withouttankpressure,with/withoutdetent N [lbs] 20 [4.5] –– Attankpressure150bar[2175

psi]N [lbs] 30 [6.7] –

0 20 40 60

2

4

6

8

10

7 8 10 6

5

391

2

4

30 5010[0]

[20]

[40]

[60]

[80]

[100]

[120]

[140]

[160] 11

[0] [4] [8] [12][2] [6] [10] [14]

100

2

200

300

6

1

7

3

5

4

8

315

0 20 40 6030 5010

[0] [4] [8] [12][2] [6] [10] [14]

[0]

[4000]

[1000]

[2000]

[3000]

[4569]

Hydraulics Bosch Rexroth AGRD 22280/10.07 WMR, WMRZ, WMU, WMM und WMD(A) 7/12

Characteristic curves (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F])

Performance limits (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F])

Spool symbols

Direction of flowP–A P–B A–T B–T

A 3 3 – –B 3 3 – –C 1 1 3 1D 5 5 3 3E 3 3 1 1F 1 3 1 1G 6 6 9 9H 2 4 2 2J 1 1 2 1L 3 3 4 9M 2 4 3 3P 3 1 1 1Q 1 1 2 1R 5 5 4 –T 10 10 9 9U 3 3 9 4V 1 2 1 1W 1 1 2 2Y 5 5 3 3

7 Spool symbol “R” in spool position "b" (A → B)8 Spool symbols “G” and “T” in central position (P → T)

∆p-qV characteristic curvesPr

essu

re d

iffer

entia

l in b

ar [p

si] →

Flow in l/min [US gpm] →

Ope

ratin

g pr

essu

re in

bar

[psi

] →

Flow in l/min [US gpm] →

Type WMR, WMRZ, WMU

Curve Spool symbol1 A, B2 C, D, Y, E, E1–, H, M,

Q, U, W3 F, P4 G5 J, L6 R8 V7 T

The specified switching performance limits are valid for use with two directions of flow (e.g. from P to A and simultaneous return flow from B to T).Due to the flow forces acting within the valve, the permis-

sible switching performance limit can be significantly lower with only one direction of flow (e.g. from P to A while port B is blocked)!In such cases, please consult us.

315

0 20 40 6030 5010

[0] [4] [8] [12][2] [6] [10] [14]

100

1

200

300

3

5

4

[0]

[4000]

[1000]

[2000]

[3000]

[4569]

2

0 20 40 6030 5010

[0] [4] [8] [12][2] [6] [10] [14]

315

100

8200

300

6

1

7

35

4

9

[0]

[4000]

[1000]

[2000]

[3000]

[4569]

3, 5

2

315

0 20 40 6030 5010

[0] [4] [8] [12][2] [6] [10] [14]

100

2

200

300

6

1

7

35

4

8

[0]

[4000]

[1000]

[2000]

[3000]

[4569]

4, 5

8/12 Bosch Rexroth AG Hydraulics WMR, WMRZ, WMU, WMM und WMD(A) RD 22280/10.07

Performance limits (measured with HLP46, oil ( = 190 SUS) = 40 °C ± 5 °C [104 °F ± 9 °F])

Ope

ratin

g pr

essu

re in

bar

[psi

] →

Type WMD, WMDA

Curve Spool symbol1 E, E1–, M, H, C, D, Y,

Q, U, W2 J, L3 A, B4 G, P5 F6 V7 R8 T

Flow in l/min [US gpm] →

Ope

ratin

g pr

essu

re in

bar

[psi

] →

Type WMM - with detent

Curve Spool symbol1 E1–, M, H, C, D, Y2 E, J, Q, L, U, W3 A, B4 G, T5 F6 V7 P8 R9 T

Flow in l/min [US gpm] →

Ope

ratin

g pr

essu

re in

bar

[psi

] →

Flow in l/min [US gpm] →

Type WMM - spring return

Curve Spool symbol1 E, E1–, M, J, L, Q, U,

W, C, D, Y, G, H, R2 A, B3 V4 F, P5 T

A BT

P

11

40

147

30,8

23

45,7 75,5

138

47 51

Ø9,4

Ø5,3

50

2222

aba b00 b

a

a b

A, C, D

.. A ..B, Y

.. B ..

18

52,9 44

A, C, D 1)b

0

0

0 a

..A.. 1)

b

b..B..2)

0 (b)

ab

9090

42

Ø25

0

a

a

1

8

9

3

2

12

13

11

10

7

64

2,8

6,5

F1 F2

F3F4

G

[2.0] 50 [2.0]

[Ø0.984]

[1.5

7]

[5.8

]

[1.2

1]

[0.9

1]

[1.79] [2.97]

[5.43]

[1.6

54]

[1.8

5]

[2.0

08]

[ 0.37]

[ 0.209]

5530

2

Ø43

ca. 104

53

[1.6

9]

[2.2]

[1.2]

[0.08] [2.0

9]

[4.09]

[1.7

3]

[2.0

8]

[2.51]

[0.433][0.2

56]

[0.7

09]

6

5

6

5

[0.11] 2,8 [0.11]

0,01/100[0.0004/4.0]

Rzmax 4

Hydraulics Bosch Rexroth AGRD 22280/10.07 WMR, WMRZ, WMU, WMM und WMD(A) 9/12

Unit dimensions (dimensions in mm [inch])

Type WMM Type WMD

Type WMDA

1) b→a/0→a:Turningclockwiseby90°2)0→b:Turningcounter-clockwiseby90°

1 Nameplate2 Porting pattern to DIN 24340 Form A (without locat-

ing bore), or ISO 4401-03-02-0-05, NFPA T3.5.1 R2 and ANSI B93-7 D03 (with locating bore for locating pin ISO 8752-3x8-St, Material no. R900005694, sepa-rate order)

3 Identical seal rings for ports A, B, P and T5 2-position valve6 3-position valve

Type WMM7 Spool position “a“8 Spool position “b“9 Spool position “0“, “a“ and “b“

(“a” and “b” on 2-position valves)Types WMD, WMDA10 Spool position “a“11 Spool position “0“ and “b“ (“b“ on 2-position valves)12 Spool position “b“13 Operatingangle90°clockwiseand90°counter-clock-

wise for 3-position valves

Required surface quality of the valve mounting face

57

74,3

6

Ø16

2,8

[2.92]

[2.24]

[0.2

36]

[ 0.63]

[0.11]2,8 [0.11]

74,3

max. 30

[2.92]

1

2,8

ab0b a

10

14

1112

56

[0.039]

[0.11]2,8 [0.11]

69,2

13,6

22

38

960

,5

Ø20

23

4942 (2

2)

62,5

AT

B

P

F1 F2

F3F4

Ø9,4

Ø5,3

[ 0.37]

[ 0.209]

[1.6

54]

([0.8

66])

48,4 64[1.89] [2.52]

[2.46]

[0.535]

[2.45]

[0.3

54]

[0.8

7]

[1.5

0]

7[0

.276

]

[0.9

1]

[1.9

3]

2

1

3 4

9+1

[2.3

8]

[ 0.79]

[0.53+0.039]

0 a/b16 15

10/12 Bosch Rexroth AG Hydraulics WMR, WMRZ, WMU, WMM und WMD(A) RD 22280/10.07

Unit dimensions (dimensions in mm [inch])

Type WMR Type WMU Types WMR, WMU

Type WMRZ

1 Nameplate2 Porting pattern to DIN 24340 Form A (without locat-

ing bore), or ISO 4401-03-02-0-05, NFPA T3.5.1 R2 and ANSI B93-7 D03 (with locating bore for locating pin ISO 8752-3x8-St, Material no. R900005694, sepa-rate order)

3 Identical seal rings for ports A, B, P and T4 Alternative clamping length (): 22 mm (type WMRZ only)

Types WMR, WMRZ, WMU5 2-position valve6 3-position valve

10 Spool position “a“11 Spool position “0“ and “b“ (“b“ on 2-position valves)12 Spool position “b“14 Overtravel,cannotbeusedasoperationalstroke15 Spool position “a“ or “b“16 Spool position “0“

For subplates and valve mounting screws, see page 11

Hydraulics Bosch Rexroth AGRD 22280/10.07 WMR, WMRZ, WMU, WMM und WMD(A) 11/12

Subplates to data sheet RE 45052 (separate order)(Without locating bore) G 341/01 (G1/4) G 342/01 (G3/8) G 502/01 (G1/2)(With locating bore) G 341/60 (G1/4) G 342/60 (G3/8) G 502/60 (G1/2) G 341/12 (SAE-6) G 342/12 (SAE-8) G 502/12 (SAE-10)

Valve mounting screws (separate order)– Clamping length 42 mm:

4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L or 10-24 UNC x 2” (Friction coefficient µtotal = 0.09 to 0.14); tightening torque MT = 7 Nm [5.2 ft-lbs] ±10%, •Materialno.metricR913000064 •Materialno.UNCR978800693

or 4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9 (Friction coefficient µtotal = 0.12 to 0.17); tightening torque MT = 8,1 Nm [6 ft-lbs] ±10%

– Clamping length 22 mm: 4 hexagon socket head cap screws ISO 4762 - M5 x 30 - 10.9-flZn-240h-L or 10-24 UNC x 1 1/4” (Friction coefficient µtotal = 0.09 to 0.14); tightening torque MT = 7 Nm [5.2 ft-lbs] ±10%, •Materialno.metricR913000316 •Materialno.UNCR978802879

or 4 hexagon socket head cap screws ISO 4762 - M5 x 30 - 10.9 (Friction coefficient µtotal = 0.12 to 0.17); tightening torque MT = 8.1 Nm [6 ft-lbs] ±10%

Unit dimensions

Bosch Rexroth AG HydraulicsZum Eisengießer 197816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 Fax +49 (0) 93 52 / 18-23 58documentation@boschrexroth.de www.boschrexroth.de

© This document, as well as the data, specifications and other informa-tion set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent.The data specified above only serve to describe the product. No state-ments concerning a certain condition or suitability for a certain applica-tion can be derived from our information. The information given does not release the user from the obligation of own judgment and verifica-tion. It must be remembered that our products are subject to a natural process of wear and aging.

12/12 Bosch Rexroth AG Hydraulics WMR, WMRZ, WMU, WMM und WMD(A) RD 22280/10.07

Notes