Directional spool valves, direct operated,

with solenoid actuation

RE 23345
Edition: 2019-04
Type WE…/S Replaces: 2019-02

▶▶ Size 10
▶▶ Component series 5X
▶▶ Maximum operating pressure 315 bar [4568 psi]
▶▶ Maximum flow 135 l/min [35.7 US gpm]

HU_1054

Features Inhalt

▶▶ 4/3 or 4/2 directional design Features 1

▶▶ Standard solenoid Ordering code 2
▶▶ Porting pattern according to ISO 4401-05-04-0-05 and Symbols 3
NFPA T3.5.1 R2-2002 D05 Function, section 4
▶▶ Wet-pin DC solenoids with detachable coil Technical data 5, 6
▶▶ Solenoid coil can be rotated by 90° Characteristic curves 7
▶▶ The coil can be changed without having to open the Performance limits 8
pressure-tight chamber Dimensions 9, 10
▶▶ Electrical connection as individual connection Over-current fuse and switch-off voltage peaks 11
▶▶ Manual override Accessories 11
More information 12

RE 23345, edition: 2019-04, Bosch Rexroth AG

2/12 WE | Directional spool valve

Ordering code

01 02 03 04 05 06 07 08 09 10 11 12 13
WE 10 5X / S G24 N9 K4 / *

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; possible version see page 3 e.g. C

05 Component series 50 … 59 (50 … 59: Unchanged installation and connection dimensions) 5X

06 With spring return no code

Without spring return with detent OF

07 Wet-pin solenoid with detachable coil S

08 Direct voltage 24 V G24

Connection to AC voltage mains via control with rectifier (see page 11)

09 With concealed manual override (standard) N9 1)

Electrical connection
10 Individual connection
Without mating connector; connector according to DIN EN 175301-803 K4 2)

Switching time increase

11 Without switching time increase no code
With switching time increase A12

Seal material
12 NBR seals M
FKM seals V

13 Further details in the plain text *

1) The manual override cannot be allocated a safety function.

The manual override units may only be used up to a tank pressure
of 50 bar.
2) Mating connector, separate order, see page 11 and data
sheet 08006.

Bosch Rexroth AG, RE 23345, edition: 2019-04

 Directional spool valve | WE 3/12

Symbols

A B A B A B A B
a b a b a 0 b a 0 b
a b a b
P T P T P T P T
A B A B
A B A B

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

0 b 0 b b .B 1)
P T P T

A
E 1)
C
G
D
D73
H

J
A B A B
J9
J73
a b a b
a b
P T P T L

B Q

Y U

1) Example:
▶▶ Spool E with spool position "a" ordering code ..EA..
▶▶ Spool E with spool position "b" ordering code ..EB..

Notice:
▶▶ Representation according to DIN ISO 1219-1.
Hydraulic interim positions are shown by dashes.
▶▶ Other symbols upon request.

RE 23345, edition: 2019-04, Bosch Rexroth AG

4/12 WE | Directional spool valve

Function, section

The directional valve type WE is a solenoid-actuated direc- After the electronic solenoid (2) has been switched off,
tional spool valve that can be used as electro-magnetic the control spool (3) is pushed back into the central posi-
component. It controls the start, stop and direction of tion or in the initial position.
a flow. A manual override (6) allows the valve to be switched
The directional valve basically consists of housing (1), one manually without solenoid energization.
or two electronic solenoids (2), the control spool (3), and To ensure proper functioning, care must be taken that
the return springs (4). the pressure chamber of the solenoid is filled with oil.
In the de-energized condition, the control spool (3) is held
in the central position or in the initial position by the
return springs (4).
In case of energization of the wet-pin electronic sole-
noid (2), the control spool (3) moves out of its rest posi-
tion into the required end position. In this way, the
required direction of flow according to the selected sym-
bol is released.

6 2 5 4 1 3 4 5 2 6

„a“ „b“

TA A P B TB
Type .WE 10 S…

Bosch Rexroth AG, RE 23345, edition: 2019-04

 Directional spool valve | WE 5/12

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

general
Weight ▶▶ Valve with one solenoid kg [lbs] 3.79 [8.37]
▶▶ Valve with two solenoids kg [lbs] 5.09 [11.23]
Installation position Any 1)

Ambient temperature range °C [°F] –20 … +50 [–4 … +122] (NBR seals)
–15 … +50 [+5 … +122] (FKM seals)
Storage temperature range °C [°F] –20 … +50 [–4 … +122]

hydraulic
Maximum operating pressure ▶▶ Port A, B, P bar [psi] 315 [4568]
▶▶ Port T bar [psi] 210 [3050]; Tank pressure (standard)
Maximum flow l/min [US gpm] 135 [35.7]
Hydraulic fluid See table below
Hydraulic fluid temperature range °C [°F] –20 … +80 [–4 … +176] (NBR seals)
(at the valve working ports) –15 … +80 [+5 … +176] (FKM seals)
Viscosity range mm2/s [SUS] 2.8 … 500 [35 … 2320]
Maximum admissible degree of contamination of the hydraulic Class 20/18/15 2)

fluid - cleanliness class according to ISO 4406 (c)

Hydraulic fluid Classification Suitable Standards Data sheet

sealing materials
Mineral oils HL, HLP, HLPD, HVLP, HVLPD NBR, FKM DIN 51524 90220

Important notices on hydraulic fluids: ▶▶ There may be limitations regarding the technical valve data
▶▶ For further information and data on the use of other hydraulic (temperature, pressure range, life cycle, maintenance
fluids, please refer to the data sheets above or contact us. intervals, etc.).
▶▶ The ignition temperature of the hydraulic fluid used must be
50 K higher than the maximum surface temperature.

1) With suspended installation, higher sensitivity to contamination.

Horizontal installation is recommended.
2) 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 service life of the components.
For the selection of the filters, see www.boschrexroth.com/filter.

RE 23345, edition: 2019-04, Bosch Rexroth AG

6/12 WE | Directional spool valve

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

electric
Voltage type Direct voltage
Nominal voltage according to VDE 0580 V 24
Voltage tolerance (nominal voltage) % ±10
Nominal power according to VDE 0580 W 39
Duty cycle % 100 (S1 according to VDE 0580)
Switching time 3) ▶▶ ON Pressure change 5% ms 54 … 138
Pressure change 95% ms 98 … 201
▶▶ OFF Pressure change 5% ms 15 … 126
Pressure change 95% ms 38 … 173
Switching time accord- ▶▶ ON ms 45 … 60
ing to ISO 6403 4) ▶▶ OFF ms 20 … 30
Maximum switching frequency 1/h 15000
Protection class according to DIN EN 60529 IP65
Maximum surface temperature of the coil 5) °C [°F] 120 [248]
Insulation class VDE 0580 F
Protection class according to VDE 0580 I
Electrical protection Every solenoid must be protected individually, using a suitable
fuse with tripping characteristic K (inductive loads). The valve
must be installed on a surface that is included in the equipoten-
tial bonding.

3) Measured with flow, 80% performance limit and horizontal

installation position. Notice:
4) Measured without flow ▶▶ The solenoid coils must not be painted.
5) Possible surface temperature >50 °C, provide contact protection! ▶▶ Actuation of the manual override is only possible up to
a tank pressure of approx. 50 bar [725 psi]. Avoid damage to
the bore of the manual override! (Special tool for the
operation, separate order, material no. R900024943).
When the manual override is blocked, actuation of the
opposite solenoid must be ruled out!
▶▶ The simultaneous actuation of 2 solenoids of one valve
must be ruled out!
▶▶ Use cables that are approved for a working temperature
above 105 °C [221 °F].
▶▶ If the standard environmental conditions according to
VDE 0580 cannot be provided, the valve must be espe-
cially protected!

Bosch Rexroth AG, RE 23345, edition: 2019-04

 Directional spool valve | WE 7/12

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

∆p-qV characteristic curves

[305] 21
Symbol Direction of flow
20
[280] 7 P–A P–B A–T B–T
A 6 4 – –
[260] 18 5
B 6 4 – –
[240] 8
16 C 1 2 3 3
[220] 6 D 1 3 3 3
14 D/OF 2 3 3 4
[200] 4
E 2 2 4 5
[180] G 7 7 5 3
12
[160] 3 H 1 1 3 4
10 J 2 2 4 5
[140] 2
J9 2 2 8 4
[120] 8 L 2 2 4 5
1
[100] Q 3 3 4 4
6 U 2 2 4 5
[80]
Y 2 1 1 4
[60] 4
[40]
2
[20]

[0]
0 10 20 30 40 50 60 70 80 90 100 110 120 135

[0] [4] [8] [12] [16] [20] [24] [28] [32] [35.7]

[725] 50
12 Symbol Direction of flow
→

P–A P–B A–T B–T

[600] 13
Pressure differential in bar [psi]

40 D73 12 13 13 12
J73 9 10 9 11
[500]
30
[400]
11
[300] 20 9
10
[200]
10
[100]

[0]
0 10 20 30 40 50 60 70 80 90 100 110 120 135

[0] [4] [8] [12] [16] [20] [24] [28] [32] [35.7]

Flow in l/min [US gpm] →

RE 23345, edition: 2019-04, Bosch Rexroth AG

 8/12 WE | Directional spool valve

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 use with port B is blocked).
two directions of flow (e.g. from P to A and simultaneous In such cases, please consult us!
return flow from B to T). The performance limits were determined when the
Due to the flow forces acting within the valves, the solenoids were at operating temperature, at 10%
admissible performance limit may be considerably lower undervoltage and without tank preloading.

Solenoid side
[4568] 315
300 Symbol Characteristic
Operating pressure in bar [psi] →

11 3
[4000] curve
250 A 1
5 8
8 B 2
[3000] 200
D; Y; C 3
2
1 D/OF
150
[2000] D73 4
E 5
100
G 6
[1000]
50 H 7
J 8
[0]
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 J9 9
J73 10
[0] [4] [8] [12] [16] [20] [24] [28] [32] [37] L 11
Flow in l/min [US gpm] → Q 12
U 13

[4568] 315
300
Operating pressure in bar [psi] →

[4000] 12 13
7
250
10 4
[3000] 200
6
9
150
[2000]

100
[1000]
50

[0]
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140

[0] [4] [8] [12] [16] [20] [24] [28] [32] [37]
Flow in l/min [US gpm] →

Bosch Rexroth AG, RE 23345, edition: 2019-04

 Directional spool valve | WE 9/12

Dimensions: Individual connection

(dimensions in mm [inch])

7 2 6 4 6 2 3 7

[0.59]
15 [0.59]

15
Ø10.8 Ø6.6
1.1 A [Ø0.43] [Ø0.26] B 1.2

80 [3.15]
[1.18]
40 [1.57]

30
[1.02] 26 80 [3.15]
5
75 120 [4.72] 174 [6.85] 75
[2.59] [2.59]
8 9 10 11 9 8
12 [0.47]

92.2 [3.63]
19.1 [0.75]

F1
P F2

A B
70 [2.76]

TA TB
F4 F3

0,01/100
[0.0004/4.0]

Rzmax 4

Required surface quality of the

Notice: valve contact surface
▶▶ Deviating from ISO 4401, port T is in this data sheet
called TA, port T1 is called TB. Item explanations, valve mounting screws and subplates
▶▶ The dimensions are nominal dimensions which are see page 10.
subject to tolerances.

RE 23345, edition: 2019-04, Bosch Rexroth AG

10/12 WE | Directional spool valve

Dimensions

1.1 Solenoid "a" Valve mounting screws (separate order)

1.2 Solenoid "b"

4 metric hexagon socket head cap screws
2 Mating connector without circuitry (separate order, see page ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
11 and data sheet 08006) (friction coefficient µtotal = 0.09 to 0.14);
3 Mating connector with circuitry (separate order, see page tightening torque MA = 12.5 Nm [9.2 ft-lbs] ± 10%,
11 and data sheet 08006) material no. R913000058
4 Name plate or
4 hexagon socket head cap screws
5 Identical seal rings for ports A, B, P, TA, TB
ISO 4762 - M6 x 40 - 10.9 (self procurement)
6 Plug screw for valves with one solenoid (friction coefficient µtotal = 0.12 to 0.17);
7 Space required to remove mating connector/angled mating tightening torque MA = 15.5 Nm [11.4 ft-lbs] ± 10%
connector
8 Space required to remove coil 4 UNC hexagon socket head cap screws
1/4-20 UNC x 1-1/2" ASTM-A574
9 Mounting nut, tightening torque MA = 9±1 Nm [6.64±0,74 ft-lbs]
(friction coefficient) µtotal = 0.19 to 0.24);
10 Porting pattern according to ISO 4401-05-04-0-05 tightening torque MA = 25 Nm [18.4 ft-lbs] ± 15%,
and NFPA T3.5.1 R2-2002 D05 (friction coefficient µtotal = 0.12 to 0.17);
11 Connection TB can only be used in connection with sepa- tightening torque MA = 19 Nm [14.0 ft-lbs] ± 10%,
rately produced bore. material no. R978800710

With different friction coefficients, the tightening torques are to be

adjusted accordingly.

Bosch Rexroth AG, RE 23345, edition: 2019-04

 Directional spool valve | WE 11/12

Over-current fuse and switch-off voltage peaks

Electrical con- Voltage data in Nominal voltage Rated current Rated current Rated voltage of external
nection the valve valve solenoid valve solenoid external miniature fuse: miniature fuse:
type code in V DC in A Medium time-lag (M) accor- Medium time-lag (M) accor-
ding to DIN 41571 and ding to DIN 41571 and
EN/IEC 60127 EN/IEC 60127
in mA in V
K4 G24 24 1.07 1.25 250

Notice:
Corresponding to the rated current, a fuse according to
DIN 41571 and EN / IEC 60127 has to be connected ahead of
every valve solenoid (max. 3 x Irated).
The shut-off threshold of the fuse has to match the prospective
short-circuit current of the supply source.
The prospective short-circuit current of the supply source may
amount to a maximum of 1500 A.

Accessories (separate order)

Mating connectors and cable sets

Item 1) Designation Version Short designation Material Data sheet
number
2, 3 Mating connector; Without circuitry, M16 x 1.5, 12 … 240 V, Z4 R901017010 08006
for valves with "K4" connector, "a"
2-pole + PE, design A Without circuitry, M16 x 1.5, 12 … 240 V, R901017011
"b"
Without circuitry, NPT 1/2", 12 … 240 V, "a" Z45 R900004823
Without circuitry, NPT 1/2", 12 … 240 V, "b" R900011039
With indicator light, M16 x 1.5, 12 … 240 V Z5L R901017022
With indicator light, NPT 1/2", 12 … 240 V Z55L R900057453
With indicator light and Z-diode-suppressor, Z5L1 R901017026
M16 x 1.5, 24 V

1) See dimensions page 9.

Energy savings and fast switching

Details see data sheet 30362

Material number
Type VT-SSBA1-PWM-1X/V001/5 as fast Type VT-SSBA1-PWM-1X/V002/5
switching amplifier for energy reduction
(switching time reduction by approx. 50%) (energy savings of approx. 40%)
a/b black R901265633 R901290194

RE 23345, edition: 2019-04, Bosch Rexroth AG

12/12 WE | Directional spool valve

More information

▶▶ Subplates Data sheet 45100

▶▶ Mineral oil-based hydraulic fluids Data sheet 90220
▶▶ Reliability characteristics according to EN ISO 13849 Data sheet 08012
▶▶ Hex socket head cap screws metric/UNC Data sheet 08936
▶▶ Hydraulic valves for industrial applications Data sheet 07600-B
▶▶ 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 23345, edition: 2019-04