Directional spool valves, direct operated,

with solenoid actuation

RE 23327 
Edition: 2013-05
Type WE Replaces: 08.08

▶▶ Size 10
▶▶ Component series 3X; 4X
▶▶ Maximum operating pressure 315 bar [4569 psi]
▶▶ Maximum flow 120 l/min [31.7 US gpm]

H5958

Features Contents

▶▶ 4/3, 4/2 or 3/2 directional design Features1

▶▶ High-power solenoid Contents1
▶▶ Porting pattern according to ISO 4401-05-04-0-05 and Ordering codes 2
NFPA T3.5.1 R2-2002 D05 Symbols3
▶▶ Wet-pin AC solenoids with detachable coil Function, section 4
▶▶ Solenoid coil can be rotated by 90° Function, section 5
▶▶ The coil can be changed without having to open the Technical data 6, 7
pressure-tight chamber Characteristic curves 8
▶▶ Electrical connection as individual or central connection Performance limits 9, 10
▶▶ Manual override, optional Dimensions 11 … 13
Mating connectors 14
Further information 14

RE 23327, edition: 2013-05, Bosch Rexroth AG

2/14 WE | Directional spool valve

Ordering codes

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16
WE 10 / C / *

01 3 main ports 3
4 main ports 4

02 Directional valve WE

03 Size 10 10

04 Symbols e.g. C, E, EA, EB, etc; for the possible version, see page 3

05 Component series 30 … 39 (30 … 39: Unchanged installation and mounting dimensions) 3X

Component series 40 … 49 (40 … 49: Unchanged installation and mounting dimensions) 4X

06 With spring return no code

Without spring return O
Without spring return with detent OF

07 High performance wet-pin solenoid with detachable coil C

08 AC voltage 230 V 50/60 Hz W230

For further ordering codes for other voltages and frequencies, see page 7;
for direct voltage, see data sheet 23340

09 With concealed manual override (standard) N9

With manual override N
Without manual override no code

Electrical connection
10 Individual connection
Without mating connector; connector DIN EN 175301-803 K4 1)
Central connection
Cable entry at the cover, with indicator light DL
Central plug-in connection at the cover, with indicator light (without mating connector) DK6L
For further electrical connections, see data sheet 08010

Spool position monitoring

11 Without position switch no code
– Inductive position switch type QM
Monitored spool position "a" QMAG24
Monitored spool position "b" QMBG24
Monitored rest position QM0G24
For further information, see data sheet 24830

12 Without throttle insert no code

Throttle Ø 0.8 mm [0.031 inch] B08
Throttle Ø 1.0 mm [0.039 inch] B10
Throttle Ø 1.2 mm [0.047 inch] B12
Use with flows which exceed the performance limit of the valve (see page 4).

Seal material
13 NBR seals no code
FKM seals V
Attention: Observe compatibility of seals with hydraulic fluid used! (Other seals upon request)

14 Further details in the plain text

1) Mating connectors, separate order, see page 14 and

data sheet 08006. Notice! Preferred types and standard units are contained
in the EPS (standard price list).
Bosch Rexroth AG, RE 23327, edition: 2013-05
 Directional spool valve | WE 3/14

Symbols

A B A B A B A B

a b a b a 0 b
a
a 0 b
b
a b
P T P T P T P T
A B A B A B A B
= .A 1)
a b a a b b = …/O.. a 0 a a 0
P T P T P T P T
A B A B A B A B
= .B
a b a a b b = …/OF.. 0 b 0 b b
P T P T P T P T

=A = E 1)

=C =F

=D =G

=H
A B A B

a b a b
a b
=J
P T P T

=B =L

=Y =M

=P

=Q

=R

=T

1) Example: =U
Symbol E with spool position "a", ordering code ..EA..

=V
Notices!
Representation according to DIN ISO 1219-1.
Hydraulic interim positions are shown by dashes.
=W

RE 23327, edition: 2013-05, Bosch Rexroth AG

4/14 WE | Directional spool valve

Function, section

The directional valve type WE is a solenoid actuated direc- When the electronic solenoid (2) is de-energized, the
tional spool valve. It controls the start, stop and direction return spring (4) pushes the control spool (3) back to its
of a flow. rest position.
The directional valve basically consists of the housing (1), A manual override (6) allows for the manual switching of
one or two electronic solenoids (2), the control spool (3), the valve without solenoid energization.
and the return springs (4). To ensure proper functioning, make sure that the pres-
In the de-energized condition, the control spool (3) is held sure chamber of the solenoid is filled with oil.
in the central position or in the initial position by the
return springs (4) (except for version "O"). The control
spool (3) is actuated by wet-pin electronic solenoids (2). For additional functions, see page 5.
The force of electronic solenoid (2) acts via the plunger (5)
on the control spool (3) and pushes the latter from its rest
position to the required end position. This enables the
necessary direction of flow from P to A and B to T or P to
B and A to T.

6 2 5 4 1 3 4 5 2 6

A B

"a" "b"

Type .WE 10 E…
TA A P B TB

Throttle insert "B.."

Using a throttle insert (7) in channels P, A, B or T increases
the flow resistance at the valve. Its use is required when
due to prevailing operating conditions, flows occur during
the switching processes, which exceed the performance
limit of the valve.

Bosch Rexroth AG, RE 23327, edition: 2013-05

 Directional spool valve | WE 5/14

Function, section

Without spring return "O" (only possible with symbols A,

Notice!
C and D)
Pressure peaks in the tank line to two or several valves
This version is a directional valve with 2 spool positions
can result in unwanted control spool movements in the
and 2 electronic solenoids without detent. The valve with-
case of valves with detent! We therefore recommend
out spring return at the control spool (3) has no defined
that separate return lines be provided or a check valve
basic position in the de-energized condition.
installed in the tank line.
Without spring return with "OF" detent (only possible
with symbols A, C and D)
This version is a directional valve with 2 spool positions
and 2 electronic solenoids with detent. The detents are
used to fix the control spool (3) in the relevant spool
position. During operation, continuous application of
current to the electronic solenoid can therefore be omitted
which contributes to energy-efficient operation.

"a"

Type .WE 10 ../OF…

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

general
Weight Individual connection Central connection
– Valve with one solenoid kg [lbs] 3.6 [7.9] 3.5 [7.7]
– Valve with two solenoids kg [lbs] 4.4 [9.7] 4.3 [9.5]
Installation position Any
Ambient temperature range °C [°F] –30 … +50 [–22 … +122] (NBR seals)
–20 … +50 [–4 … +122] (FKM seals)
MTTFd values according to EN ISO 13849 Years 150 (for further details see data sheet 08012)

hydraulic
Maximum operating pressure – Port A, B, P bar [psi] 315 [4569]
– Port T bar [psi] 160 [2320]
With symbols A and B, port T has to be used as leakage oil con-
nection if the operating pressure exceeds the tank pressure.
Maximum flow l/min [US gpm] 120 [31.7]
Flow cross-section – Symbol V mm2 [inch2] 11 [0.017] (A/B to T); 10.3 [0.016] (P to A/B)
(spool position 0) – Symbol W mm2 [inch2] 2.5 [0.004] (A/B to T)
– Symbol Q mm2 [inch2] 5.5 [0.009] (A/B to T)
Hydraulic fluid See table below
Hydraulic fluid temperature range °C [°F] –30 … +80 [–22 … +176] (NBR seals)
(at the valve operating ports) –20 … +80 [–4 … +176] (FKM seals)
Viscosity range mm2/s [SUS] 2.8 … 500 [35 … 2320]
Maximum admissible degree of contamination of the hydraulic fluid - Class 20/18/15 1)

cleanliness class according to ISO 4406 (c)

Hydraulic fluid Classification Suitable sealing materials Standards

Mineral oils HL, HLP, HLPD, HVLP, HVLPD NBR, FKM DIN 51524
HETG NBR, FKM
– insoluble in water VDMA 24568
Bio-degradable HEES FKM
– soluble in water HEPG FKM VDMA 24568
– water-free HFDU, HFDR FKM ISO 12922
Flame-resistant HFC (Fuchs Hydrotherm 46M,
– containing water NBR ISO 12922
Petrofer Ultra Safe 620)

Important information on hydraulic fluids! ▶▶ Flame-resistant – containing water:

▶▶ For more information and data on the use of other hydraulic –– Maximum pressure difference per control edge 50 bar
fluids, refer to data sheet 90220 or contact us! –– Pressure pre-loading at the tank port > 20% of the pressure
▶▶ There may be limitations regarding the technical valve data (tem- differential, otherwise increased cavitation
perature, pressure range, life cycle, maintenance intervals, etc.)! –– Life cycle as compared to operation with mineral oil HL,
▶▶ The flash point of the hydraulic fluid used must be 40 K higher HLP 50 to 100%
than the maximum solenoid surface temperature. ▶▶ Bio-degradable: When using bio-degradable hydraulic fluids that
are simultaneously zinc-solving, zinc may accumulate in the fluid
(per pole tube 700 mg zinc).

1) The cleanliness classes specified for the components must be

adhered to in hydraulic systems. Effective filtration prevents faults
and at the same time increases the life cycle of the components.
For the selection of the filters, see www.boschrexroth.com/filter.

Bosch Rexroth AG, RE 23327, edition: 2013-05

 Directional spool valve | WE 7/14

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

electric
Voltage type Alternating voltage 50/60 Hz
Available voltages 2) (For ordering codes for AC voltage V 42, 110, 230
solenoids, see below)
Voltage tolerance (nominal voltage) % ±10
Power consumption W –
Holding power VA 90
Switch-on power VA 550
Duty cycle (ED) % 100
Switching time according – ON ms 15 … 25
to ISO 6403 – OFF ms 20 … 30
Maximum switching frequency 1/h 7200
Maximum surface temperatures of the coil 3) °C [°F] 180 [356]
Protection class according to DIN EN 60529 IP 65 with mating connector mounted and locked
Insulation class VDE 0580 H
Electrical protection Every solenoid must be protected individually, using a suitable
fuse with tripping characteristic K (inductive loads).
Behavior in case of an error (solenoid does not switch though) The solenoid surface temperature may be exceeded.

2) Special voltages on request

3) Possible surface temperature > 50 °C, provide contact protection! Notice!
AC solenoids can be used for 2 or 3 mains; e.g. solenoid type
W110 for: 110 V, 50 Hz; 110 V, 60 Hz; 120 V, 60 Hz
Notice!
▶▶ The solenoid coils must not be painted.
▶▶ Actuation of the manual override is only possible up to Ordering code Mains
a tank pressure of approx. 50 bar [725 psi]. Avoid damage to
W42 42 V, 50 Hz
the bore of the manual override! (Special tool for the
42 V, 60 Hz
operation, separate order, material no. R900024943).
When the manual override is blocked, actuation of the W110 110 V, 50 Hz
opposite solenoid must be ruled out! 110 V, 60 Hz
▶▶ The simultaneous actuation of 2 solenoids of one valve 120 V, 60 Hz
must be ruled out! W230 230 V, 50 Hz
▶▶ Use cables that are approved for an operation temperature 230 V, 60 Hz
above 105 °C [221 °F].
▶▶ When solenoid coils are switched off, voltage peaks result
which may cause failures or damage in the connected
control electronics. The user has to provide for a suitable When establishing the electrical connection, the protective
circuit for limiting the voltage peaks. It must be noted that earthing conductor (PE ) has to be connected correctly.
a diode switched in an anti-parallel form extends the
switching off time.
▶▶ Valves with individual connection and supply voltage 12 V
or 24 V can be operated with twice the voltage for reducing
the switching time. For this purpose, the voltage has to be
reduced to the nominal valve voltage after 100 ms by
means of pulse width modulation. The maximum admis-
sible switching frequency is 5 1/s.
▶▶ Due to possible overloads of the printed-circuit board,
valves with central connection must not be operated with
twice the voltage.

RE 23327, edition: 2013-05, Bosch Rexroth AG

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

∆p-qV characteristic curves

10
[203] 14 9 Symbol Direction of flow
P – A P – B A – T B – T
→

[180]
12 8 A; B 3 3 – –
Pressure differential in bar [psi]

[160]
7 C 3 3 4 5
[140]
10
6 D; Y 5 5 6 6
[120] 5 E 1 1 4 4
8 4
[100] 3 F 2 3 7 4
6 2 G 3 3 6 7
[80] 1
H 1 1 6 7
[60] 4 J 1 1 3 3
[40] L 2 2 3 5
2
[20] M 1 1 4 5

[0] P 4 2 5 7
0 10 20 30 40 50 60 70 80 90 100 110 120 Q 1 2 1 3
R 3 6 4 –
[0] [4] [8] [12] [16] [20] [24] [28] [31.7]
T 3 3 6 7
Flow in l/min [US gpm] → U; V 2 2 3 3
W 2 2 4 5

Central position: Spool position:

Symbol Direction of flow Symbol Direction of flow
P – A P – B B – T A – T P – T P – A B–A A – T P – T
F 4 – – 9 9 R – 9 – –
P – 5 8 – 10
G, T – – – – 9
H – – – – 3

Bosch Rexroth AG, RE 23327, edition: 2013-05

 Directional spool valve | WE 9/14

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

Notice! with only one direction of flow (e.g. from P to A while

The specified performance limits are valid for operation port B is blocked).
with two directions of flow (e.g. from P to A and simulta- In such cases, please consult us.
neous return flow from B to T). The performance limits were determined when the
Due to the flow forces acting within the valves, the per- solenoids were at operating temperature, at 10%
missible performance limit may be considerably lower undervoltage and without tank pre-loading.

 315
Operating pressure in bar [psi] →

300 Characteristic Symbol

5 4 curve
 8 1
2
250 1 C; C/O; C/OF; D; D/O; D/OF; Y
6 7 2 E; L; U; Q; W
 200 3 A/O; A/OF; J
3
4 F; P
150 5 T

4 6 H
100 7 R
 5 8 2) L; U
50
5 2) Central position only
4

0 10 20 30 40 50 60 70 80 90 100 110 120
42 V, 50 Hz; 110 V, 50 Hz; 120 V, 60 Hz;
127 V, 50 Hz; 220 V, 50 Hz; 240 V, 60 Hz
        

Flow in l/min [US gpm] →

[4569] 315
Operating pressure in bar [psi] →

300 Characteristic Symbol

[4000] 11 curve
10 9
250 9 M
12 10 A, B
[3000] 200 11 G
11 12 V
150
[2000]
42 V, 50 Hz; 110 V, 50 Hz; 120 V, 60 Hz;
100 127 V, 50 Hz; 220 V, 50 Hz; 240 V, 60 Hz

[1000] 11
50
10
[0]
0 10 20 30 40 50 60 70 80 90 100 110 120

[0] [4] [8] [12] [16] [20] [24] [28] [31.7]

Flow in l/min [US gpm] →

RE 23327, edition: 2013-05, Bosch Rexroth AG

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

Notice! with only one direction of flow (e.g. from P to A while

The specified performance limits are valid for operation port B is blocked).
with two directions of flow (e.g. from P to A and simulta- In such cases, please consult us.
neous return flow from B to T). The performance limits were determined when the
Due to the flow forces acting within the valves, the per- solenoids were at operating temperature, at 10%
missible performance limit may be considerably lower undervoltage and without tank pre-loading.

[4569] 315
Operating pressure in bar [psi] →

300 Characteristic Symbol

[4000] 15 curve
250 13 C; C/O; C/OF; D; D/O; D/OF; Y
14 17 18 14 A/O; A/OF
[3000] 13
200 15 E
16 16 M
150 17 V
[2000]
18 H
100
[1000] 42 V, 60 Hz; 110 V, 60 Hz;
50 127 V, 60 Hz; 220 V, 60 Hz
Please consult us regarding the performance limits
for other symbols.
[0]
0 10 20 30 40 50 60 70 80 90 100 110 120

[0] [4] [8] [12] [16] [20] [24] [28] [31.7]

Flow in l/min [US gpm] →

Bosch Rexroth AG, RE 23327, edition: 2013-05

 Directional spool valve | WE 11/14

Dimensions: Individual connection

(dimensions in mm [inch])

12 5 11 9 11 5 6 12

15 

15

11 6,6
A     B

1.1 1.2
117 

123 



40

30
3  26 80 
10 3
15  95,8  149,8  15 
46 175,8 
 175,8  46
245,6  

13 14 2 92,2  14 13
18,9 
12

F1 F2

P
70 


TA A B TB
F4 F3

15 16

0,01/100
[0.0004/4.0]

Rzmax 4

Required surface quality of

the valve contact surface

For item explanations, valve mounting screws and sub-

Notice! plates, see page 13.
▶▶ Deviating from ISO 4401, in this data sheet port T is
called TA, port T1 is called TB.
▶▶ The dimensions are nominal dimensions which are
subject to tolerances.

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Dimensions: Central connection

(dimensions in mm [inch])

 16 50 

12 8 7 4
157 
114,5 
97,5 

Terminal assignment with central connection: 0,01/100

▶▶ 1 solenoid: [0.0004/4.0]
Always connect the solenoid to terminals 1 and 2,
Rzmax 4
the protective grounding conductor to terminal PE
▶▶ 2 solenoids:
Required surface quality of
Always connect solenoid "a" to terminals 1 and 2, the valve contact surface
solenoid "b" to terminals 3 and 4,
the protective grounding conductor to terminal PE

For item explanations, valve mounting screws and sub-

Notice! plates, see page 13.
▶▶ Deviating from ISO 4401, in this data sheet port T is
called TA, port T1 is called TB.
▶▶ The dimensions are nominal dimensions which are
subject to tolerances.

Bosch Rexroth AG, RE 23327, edition: 2013-05

 Directional spool valve | WE 13/14

Dimensions

1.1 Solenoid "a" Subplates according to data sheet 45054 (separate order)
G 66/01 (G3/8)
1.2 Solenoid "b"
G 67/01 (G1/2)
2 Dimension for solenoid without and with concealed manual G 534/01 (G3/4)
override "N9" (standard) G 66/12 (SAE-6; 9/16-18) 1)
3 Dimension for solenoid with manual override "N" G 67/12 (SAE-8; 3/4-16) 1)
4 Cover G 534/12 (SAE-12; 1-1/16-12) 1)
1) On request
Attention!
The valve may only be operated with properly
mounted cover. Valve mounting screws (separate order)
5 Mating connector without circuitry (separate order, 4 metric hexagon socket head cap screws
see page 14 and data sheet 08006) ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
(friction coefficient µtotal = 0.09 … 0.14);
6 Mating connector with circuitry (separate order,
tightening torque MA = 12.5 Nm [9.2 ft-lbs] ± 10%,
see page 14 and data sheet 08006)
material no. R913000058
7 Cable gland Pg 16 [1/2" NPT] "DL" or
8 Angled socket (red, separate order) 4 hexagon socket head cap screws
(material no. R900005538) ISO 4762 - M6 x 40 - 10.9 (self procurement)
9 Name plate (friction coefficient µtotal = 0.12 … 0.17);
tightening torque MA = 15.5 Nm [11.4 ft-lbs] ± 10%
10 Identical seal rings for ports A, B, P, TA, TB (for valves with
throttle insert: O ring in channel P)
4 UNC hexagon socket head cap screws
11 Plug screw for valves with one solenoid 1/4-20 UNC x 1-1/2" ASTM-A574
12 Space required to remove the mating connector/ (friction coefficient µtotal = 0.19 … 0.24);
angled socket tightening torque MA = 20 Nm [14.7 ft-lbs] ± 15%,
13 Space required to remove the coil (friction coefficient µtotal = 0.12 … 0.17);
tightening torque MA = 14 Nm [10.3 ft-lbs] ± 10%,
14 Mounting nut, tightening torque MA = 6+2 Nm [4.43+1.48 ft-lbs]
material no. R978800710
15 Porting pattern according to ISO 4401-05-04-0-05 and
NFPA T3.5.1 R2-2002 D05 With different friction coefficients, the tightening torques are to be
16 Connection TB can only be used in connection with sepa- adjusted accordingly!
rately produced bore.

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Mating connectors according to DIN EN 175301-803

For details and more mating

connectors see
data sheet 08006

Material number
Valve side

With
With indicator light and Zener diodes-
Without indicator light protection circuit
Port Color circuitry 12 ... 240 V 24 V
a Gray R901017010 – –
M16 x 1.5 b Black R901017011 – –
a/b Black – R901017022 R901017026
a Red/brown R900004823 – –
1/2" NPT
b Black R900011039 – –
(Pg 16)
a/b Black – R900057453 –

Further information

▶▶ Subplates Data sheet 45054

▶▶ Inductive position switches and proximity sensors (contactless) Data sheet 24830
▶▶ Version with DC solenoids Data sheet 23340
▶▶ Hydraulic fluids on mineral oil basis Data sheet 90220
▶▶ Reliability characteristics according to EN ISO 13849 Data sheet 08012
▶▶ General product information on hydraulic products Data sheet 07008
▶▶ Installation, commissioning and maintenance of industrial valves Data sheet 07300
▶▶ Selection of the filters www.boschrexroth.com/filter

Bosch Rexroth AG © This document, as well as the data, specifications and other information set
Hydraulics forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
Zum Eisengießer 1 reproduced or given to third parties without its consent.
97816 Lohr am Main, Germany The data specified above only serve to describe the product. No statements
Phone +49 (0) 93 52 / 18-0 concerning a certain condition or suitability for a certain application can be
documentation@boschrexroth.de derived from our information. The information given does not release the user
www.boschrexroth.de from the obligation of own judgment and verification. It must be remembered
that our products are subject to a natural process of wear and aging.

Bosch Rexroth AG, RE 23327, edition: 2013-05

 Directional spool valve | WE 15/14

Notes

Bosch Rexroth AG © This document, as well as the data, specifications and other information set
Hydraulics forth in it, are the exclusive property of Bosch Rexroth AG. It may not be
Zum Eisengießer 1 reproduced or given to third parties without its consent.
97816 Lohr am Main, Germany The data specified above only serve to describe the product. No statements
Phone +49 (0) 93 52 / 18-0 concerning a certain condition or suitability for a certain application can be
documentation@boschrexroth.de derived from our information. The information given does not release the user
www.boschrexroth.de from the obligation of own judgment and verification. It must be remembered
that our products are subject to a natural process of wear and aging.

RE 23327, edition: 2013-05, Bosch Rexroth AG

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Notes

Bosch Rexroth AG, RE 23327, edition: 2013-05