RE 29583-XH

Edition: 2019-10
Replaces: 04.16, 29583-XH-100 /102 / 104
RA80392244_AA

Directional servo valve,

with mechanical position feedback

Type 4WS2EM …XH

▶▶ Size 10
▶▶ Component series 5X
▶▶ Maximum operating pressure 315 bar
▶▶ Maximum flow 180 l/min

ATEX units
For potentially explosive atmospheres
Information on explosion protection:
▶▶ Area of application in accordance with the
Explosion Protection Directive 2014/34/EU: II 1G
▶▶ Type of protection valve:
Ex ia h IIC T4 Ga according to EN ISO 80079-36
H5893 and EN IEC 60079-0 / EN 60079-11

Features Contents

▶▶ 4 or 3-way version Features1

▶▶ For intended use in potentially explosive atmospheres Ordering code 2, 3
of zone 0 Symbols3
▶▶ Subplate mounting Function, section 4
▶▶ Porting pattern according to 4401-05-05-0-05 Technical data 5…7
▶▶ Dry control motor, no contamination of the solenoid Electrical connection 7
gaps by the hydraulic fluid Characteristic curves8 … 12
▶▶ Wear-free control spool return element Dimensions13
▶▶ External control electronics in modular design, Flushing plate 14
additional safety barrier Accessories14
▶▶ Control spool with flow force compensation Further information 15
▶▶ Control sleeve centrically fixed, thus low susceptibility
to temperature and pressure
▶▶ Pressure chambers at the control sleeve with gap seal,
no wear of seal ring

Notice: The documentation version with which the

product was supplied is valid.

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Ordering code

01 02 03 04 05 06 07 08 09 10 11 12 13 14
4WS2E M 10 – 5X / B 11 XH K31 V

01 Directional servo valve, 4-way version, 2-stage, electrically operated 4WS2E

Control spool return

02 Mechanical M

03 Size 10 10

04 Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) 5X

Rated flow
05 5 l/min 5
10 l/min 10
20 l/min 20
30 l/min 30
45 l/min 45
60 l/min 60
75 l/min 75
90 l/min 90

06 Control sleeve exchangeable B

07 Valve for external control electronics; coil no. 11 (30 mA/85 Ω per coil) 11

Explosion protection
08 "Intrinsically safe" for device group II XH
For details, see information on the explosion protection page 7

Pilot oil supply

09 External pilot oil supply, external pilot oil return –
Internal pilot oil supply, external pilot oil return E
Internal pilot oil supply, internal pilot oil return ET
External pilot oil supply, internal pilot oil return T

Inlet pressure range

10 10 … 210 bar 210
10 … 315 bar 315

Electrical connection
11 Without mating connector; connector DIN EN 175201-804 K31 1)

Control spool overlap 2)

12 0 … 0.5% negative E
0 … 0.5% positive D
3 … 5% positive C

Seal material (observe compatibility of seals with hydraulic fluid used, see page 6)
13 FKM seals V

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Ordering code

01 02 03 04 05 06 07 08 09 10 11 12 13 14
4WS2E M 10 – 5X / B 11 XH K31 V

Special versions
14 Without control (de-energized condition), channels P → B and A → T are open 10% of the nominal quantity. -100
Without control (de-energized condition), channels P → A and B → T are open 10% of the nominal quantity. -102
3-way version; Channel B is set to half the operating pressure without command value control (0 mA). -104

1) Mating connector, separate order, see page 14.

2) The control spool overlap is specified in % of the control spool
stroke.

Symbols

Control spool overlap "E" Control spool overlap "C" and "D"
A B A B

a, b a, b
P T P T

A B A B

Special version "-100"

P T P T

A B A B

Special version "-102"

P T P T

B B

Special version "-104"

P T P T

Notice:
Representation according to DIN ISO 1219-1.

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Function, section

Valves of type 4WS2EM are electrically operated, 2-stage The control spool (3) is connected to the flapper plate or
directional servo valves. They are mainly used to control the torque motor by means of a bending spring
position, force, pressure or velocity. (mechanical feedback) (9). The position of the control
The valves basically comprise of an electro-mechanical spool (3) is changed until the feedback torque across the
converter (torque motor) (1), a hydraulic amplifier bending spring and the electro-magnetic torque of the
(nozzle flapper plate principle) (2) and a control spool (3) torque motor are balanced and the pressure differential at
in a sleeve (2ndstage) which is connected with the torque the nozzle flapper plate system becomes zero.
motor via a mechanical feedback. The stroke of the control spool (3) and consequently the
An electrical input signal at the coils (4) of the torque flow of the servo valve are controlled proportionally to the
motor generates a force by means of a permanent magnet electrical input signal. It must be noted that the flow
which acts on the armature (5), and in connection with depends on the valve pressure drop.
a torque tube (6) results in a torque. This causes the
flapper plate (7) which is connected to the torque tube (6) External control electronics (servo amplifier) serve the
via a bolt to move from the central position between the actuation of the valve, amplifying an analog input signal
two control nozzles (8), and a pressure differential is (command value) so that with the output signal, the servo
created across the front sides of the control spool (3). valve is actuated in a flow-controlled form.
This pressure differential results in the control spool (3)
changing its position, which results in the pressure port Version "-104"
being connected to one actuator port and, at the same This is a directional servo valve in 3-way version which
time, the other actuator port being connected to the means that depending on the input signal either P to B
return flow port. or B to T is connected. Channel A is always blocked in the
control area.

T T1

Type 4WS2EM 10...

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

General
Installation position Any - ensure that during start-up of the system, the valve is
supplied with sufficient pressure (≥ 10 bar)
Ambient temperature range °C –20 … +60
Storage temperature range °C +5 … +40
Maximum storage time years 1
Weight kg 3.56
Surface protection ▶▶ Valve body, cover, filter screw Nitro-carburated
▶▶ Cap Anodized

Hydraulic
Operating pressure range ▶▶ Pilot control valve
–– Pilot oil supply bar 10 … 210 or 10 … 315
Maximum operating pressure ▶▶ Main valve,
–– Port A, B, P bar 315
Maximum return flow pressure ▶▶ Port T
–– Pilot oil return internal bar Pressure peaks < 100, static < 10
–– Pilot oil return external bar 315
▶▶ Port Y bar Pressure peaks < 100, static < 10
Hydraulic fluid see table page 6
Hydraulic fluid temperature range °C –15 … +60, preferably +40 … +50
Viscosity range mm2/s 15 ... 380; preferably 30 ... 45
Maximum admissible degree of contamination of the hydraulic fluid, Class 18/16/13 1)

cleanliness class according to ISO 4406 (c)

Zero flow qV,L l/min see characteristic curve on page 9
Rated flow qV nom l/min 5 10 20 30 45 60 75 90
(tolerance ±10% with valve pressure differential ∆p = 70 bar) 2)
Maximum control spool stroke with mechanical end % 120 … 170 120 … 150
position (in case of error) related to nominal stroke
Feedback system mechanical
Hysteresis (dither-optimized) % ≤ 1.5
Range of inversion (dither-optimized) % ≤ 0.3
Response sensitivity (dither-optimized) % ≤ 0.2
Pressure amplification with 1% control spool stroke % of pP ≥ 30 ≥ 60 ≥ 80
change (from the hydraulic zero point)
Zero adjustment flow % ≤ 3, long-term ≤ 5
across the entire operating pressure range
Zero shift upon change of:
▶▶ Hydraulic fluid temperature % / 20 °C ≤ 1
▶▶ Ambient temperature % / 20 °C ≤ 1
▶▶ Operating pressure 80 … 120% of pP % / 100 bar ≤ 2
▶▶ Return flow pressure 0 … 10% of pP % / bar ≤ 1

1) The cleanliness classes specified for the components must qV,L = zero flow in l/min
be adhered to in hydraulic systems. Effective filtration prevents qV nom = rated flow in l/min
faults and simultaneously increases the life cycle of the pP = operating pressure in bar
components.
Available filters can be found at www.boschrexroth.com/filter.
2) With version "-104", valve pressure differential ∆p = 35 bar/
control edge

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

Hydraulic fluid Classification Suitable sealing Standards Data sheet

materials
Mineral oils HL, HLP, HLPD, HVLP, HVLPD NBR, FKM DIN 51524 90220
Bio-degradable ▶▶ Insoluble in water HETG FKM
ISO 15380
HEES FKM 90221
▶▶ Soluble in water HEPG FKM ISO 15380

Important information on hydraulic fluids: ▶▶ The ignition temperature of the hydraulic fluid used must be
▶▶ For further information and data on the use of other hydraulic at least 150 °C.
fluids, please refer to the data sheets above or contact us.
▶▶ There may be limitations regarding the technical valve data
(temperature, pressure range, life cycle, maintenance intervals,
etc.).

Electric
Protection class according to EN 60529 IP65 (if suitable and correctly mounted mating connectors are used)
Type of signal analog
Rated current per coil mA 30
Resistance per coil Ω 85
Inductivity with 60 Hz ▶▶ Parallel connection H 0.25
and 100% rated current

Notice:
In case of control using non-Rexroth amplifiers, we recommend
a superimposed dither signal.

External control electronics

Recommended safety barrier see page 7
Servo amplifier in modular design analog Type VT 11021 according to data sheet 29743

Important notice:
The external servo amplifier and the safety barrier must be
operated outside the potentially explosive area.

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

Information on explosion protection

Area of application according to Directive 2014/34/EU II 1G
Type of protection according to EN ISO 80079-36 and EN IEC 60079-0 / Ex ia h IIC T4 Ga
EN 60079-11
EU type examination certificate PTB 11 ATEX 2025 X
Power supply of the valve only from intrinsically safe electric circuits Maximum values see "Electrical connection"

Special application conditions for safe application:

▶▶ Valve cap and mating connector consist of aluminum alloys.
For the use as a device of category 1 in zone 0, the valve cap
must be protected in a way that ensures that even in case of
rare operating failures, no explosive sparks from friction,
impact or grinding can occur.
▶▶ The ignition temperature of the hydraulic fluid used must be at
least 150 °C.
▶▶ The specified clearance area for the overpressure protection
(see page 13) must be complied with so that in case of an
error, overpressure may leak through the valve cap.

Electrical connection

The coils may only be connected in parallel.

▶▶ Parallel connection

1 2 5.1 5.2 3 4
A C B D
A 1 Servo amplifier
C 2 Safety barrier
B 3 Valve, coil A
D 4 Valve, coil B
E 5.1 Non-explosive area
n.c.
F 5.2 Explosive area
n.c.
PE n.c.
PA PA

Power supply of the valve only from intrinsically safe ▶▶ Umax V 9.3
electric circuits with the following maximum values ▶▶ Imax mA 390
▶▶ Pmax mW 907
Recommended safety barrier Type 9001/02-093-390-101 (company Stahl)

The electric control with plus (+) at A and B and minus (–) at C
Notice: and D results in direction of flow P → A and B → T.
Only use approved cables and lines for intrinsically safe electric Inverted electric control results in direction of flow P → B and A → T.
circuits. The pins E, F and PE at the connector are not connected.

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Characteristic curves
(measured with HLP 32, ϑoil = 40 °C ± 5 °C)

Tolerance field of the flow/signal function at constant valve pressure differential ∆p

Standard Special version "-100"

P → A; B → T P → A; B → T
110 100
100
80
80
60
60
40 1
40 1
20

← Flow in % →
← Flow in % →

20 -100 -80 -60 -40 -20 -5

-100 -80 -60 -40 -20 -5
5 20 40 60 80 100
5 20 40 60 80 100 20
20
40
40 2
2 60
60
80
80
100
100
110 120
P → B; A → T P → B; A → T
← Command value in % → ← Command value in % →

Special version "-102" Special version "-104"

P → A; B → T B→T
120 110
100
100
80
80
60
60
40 1
1
40
← Flow in % →
← Flow in % →

20
20 -100 -80 -60 -40 -20 -5
-100 -80 -60 -40 -20 -5
5 20 40 60 80 100
5 20 40 60 80 100 20
20
40
40
2 2
60
60
80
80
100
100 110
P → B; A → T P→B
← Command value in % → ← Command value in % →

1 Tolerance field
2 Typical flow curve

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Characteristic curves
(measured with HLP 32, ϑoil = 40 °C ± 5 °C)

Flow/load function
(tolerance ±10%) with 100% command value signal
200 8 Version Characteristic
7
curve
6
100 "5" 1
90 5
75 "10" 2
60 4 "20" 3
45 "30" 4
40 3
30 "45" 5
Flow in l/min →

"60" 6
20 2 "75" 7
15
"90" 8
10 1
Notice:
5 ▶▶ ∆p = pP – pL – pT
∆p valve pressure
differential
pP inlet pressure
2 pL load pressure
pT return flow pressure

1
10 20 30 40 50 60 70 100 200 300
Valve pressure differential in bar →

Zero flow (with control spool overlap "E", measured without dither signal)

4.0
3.8
3.6
5
3.4
3.2
4
3.0
2.8
Zero flow in l/min →

2.6
2.4 3
2.2
2.0 2
1.8
1.6 1
1.4 Rated flow
1.2 1 5 l/min
1.0
2 10 l/min
0.8
0.6 3 20, 30, 45 l/min
0.4 4 60, 75 l/min
0.2 5 90 l/min
0
0 50 100 150 200 250 300 350
Operating pressure in bar →

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Characteristic curves
(measured with HLP 32, ϑoil = 40 °C ± 5 °C)

Transition function with pressure rating 315 bar, step response without flow

Version "5", "10" and "20" Version "30"

100 100
90 90
Control spool stroke in % →

Control spool stroke in % →

80 80
70 70
60 60
50 50
40 40
30 30
20 20
10 10

0 5 10 15 20 0 5 10 15 20
Time in ms → Time in ms →

Version "45" Version "60"

100 100
90 90
Control spool stroke in % →

Control spool stroke in % →

80 80
70 70
60 60
50 50
40 40
30 30
20 20
10 10

0 10 20 30 40 0 10 20 30 40
Time in ms → Time in ms →

Version "75" Version "90"

100 100
90 90
Control spool stroke in % →

Control spool stroke in % →

80 80
70 70
60 60
50 50
40 40
40 bar
30 30 70 bar
20 20 140 bar

10 10 210 bar
315 bar
0 10 20 30 40 50 0 10 20 30 40 50 60
Time in ms → Time in ms →

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Characteristic curves
(measured with HLP 32, ϑoil = 40 °C ± 5 °C)

Frequency response with pressure rating 315 bar, stroke frequency without flow

Version "5", "10" and "20" Version "30"

5 -315 5 -315

0 -270 0 -270
Amplitude ratio in dB →

Amplitude ratio in dB →
-3 -3

Phase angle in ° →
Phase angle in ° →
-5 -225 -5 -225

-10 -180 -10 -180

-15 -135 -15 -135

-20 -90 -20 -90

-25 -40 -25 -40

-30 0 -30 0
10 20 50 100 200 500 700 10 20 50 100 200 500 700
Frequency in Hz → Frequency in Hz →

Version "45" Version "60"

5 5

0 0
Amplitude ratio in dB →
Amplitude ratio in dB →

-3 -3

Phase angle in ° →
Phase angle in ° →

-5 -5

-10 -10
-150 -150
-15 -15
-120 -120
-20 -90 -20 -90
-60 -60
-25 -25
-30 -30
-30 0 -30 0
1 2 10 20 50 100 300 700 1 2 10 20 50 100 300 700
Frequency in Hz → Frequency in Hz →

Version "75" Version "90"

5 5

0 0
Amplitude ratio in dB →

Amplitude ratio in dB →

-3 -3
Phase angle in ° →
Phase angle in ° →

-5 -5

-10 -10
-150 -150
-15 -15
-120 -120
-20 -90 -20 -90
-60 -60
-25 -25
-30 -30
-30 0 -30 0
1 2 10 20 50 100 300 700 1 2 10 20 50 100 300 700
Frequency in Hz → Frequency in Hz →

5%
25%
100%

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Characteristic curves
(measured with HLP 32, ϑoil = 40 °C ± 5 °C)

Frequency response with pressure rating 315 bar, stroke frequency without flow

Version "5", "10" and "20" Version "30"

100 100
90 90
Inlet amplitude in % →

Inlet amplitude in % →
80 80
70 70
60 60
50 50
40 40
30 30
20 20
10 10

0 50 100 150 200 250 300 325 0 50 100 150 200 250 300 325
Frequency at –90° in Hz → Frequency at –90° in Hz →

Version "45" Version "60"

100 100
90 90
Inlet amplitude in % →

Inlet amplitude in % →

80 80
70 70
60 60
50 50
40 40
30 30
20 20
10 10

0 50 100 150 200 250 300 325 0 50 100 150 200 250 300 325
Frequency at –90° in Hz → Frequency at –90° in Hz →

Version "75" Version "90"

100 100
90 90
Inlet amplitude in % →

Inlet amplitude in % →

80 80
70 70
60 60
50 50
40 40
30 30
20 20
10 10

0 50 100 150 200 250 300 325 0 50 100 150 200 250 300 325
Frequency at –90° in Hz → Frequency at –90° in Hz →

40 bar
70 bar
140 bar
210 bar
315 bar

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Dimensions
(dimensions in mm)

3 2 11 1
15 95 68

32
96
0,01/100
80
Rzmax 4

64
60
Required surface quality of the
valve contact surface

10
9.5
1 Cap
M6
2 Mating connector (separate order, see page 14)
3 Space required for removing the mating connector, 10 4 6 7 5 8

3.7
also observe the bending radius of the connection line
4 Exchangeable filter element with seals
Material no.: R961001950
9.5

5 Profile seal for filter screw M16 x 1.5, part of item 4 P

6 Name plate
X A B Y
7 Identical seal rings for ports P, A, B, T and T1

65
min 6

8 Identical seal rings for ports X and Y; T

Ports X and Y are also pressurized in case of "internal" pilot oil
T1
supply and return
9 Machined valve contact surface;
Porting pattern according to ISO 4401-05-05-0-05;
Port T1 is optional and is recommended for reducing the

1.5
pressure drop from B → T with rated flows > 45 l/min.
12.5 24
10 Valve mounting screws (included in the scope of delivery)
102
Only use valve mounting screws with the subsequently listed 127
thread diameters and strength properties. Observe the
screw-in depth. 12 25.5
9
4 hexagon socket head cap screws ISO 4762 - M6 x 70 - 10.9
(Friction coefficient µtotal = 0.09 … 0.14)
Tightening torque MA = 12.5 Nm ± 1.5 Nm
11

F1 F2
11 Overpressure protection P
X Y
12 Clearance area for overpressure protection
A B
68

T T1

F4 F3
Notes:
▶▶ The dimensions are nominal dimensions which are subject to
tolerances. 105
▶▶ Subplates are no components in the sense of
Directive 2014/34/EU and can be used after the manufacturer
of the overall system has conducted an assessment of the risk
of ignition. The "G...J3" versions are free from aluminum Subplates (separate order) with porting pattern
and/or magnesium and galvanized. according to ISO 4401-05-05-0-05, see data sheet 45100.

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Flushing plate with porting pattern according to ISO 4401-05-05-0-05

(dimensions in mm)

Symbol

T P X A B Y T1

46.5
40.5
Ordering code and further information
▶▶ Material number R900912450
▶▶ Weight 2.0 kg

9.5
▶▶ Identical seal rings for ports P, A, B, T and T1
90 2
▶▶ Identical seal rings for ports X and Y
▶▶ Mounting screws (included in the scope of delivery) 18
For reasons of stability, exclusively use the following
valve mounting screws: P

12
4 hexagon socket head cap screws
ISO 4762 - M6 x 50 -10.9 A B
(friction coefficient µtotal = 0.09 … 0.14);
X Y

70
Tightening torque MA = 12.5 Nm ± 1.5 Nm

T T1

Notice:
Before assembly and operation, please observe the information
in the 29583-XH-B operating instructions.

Accessories (separate order)

Mating connectors
Item 1) Designation Version Short Material Data sheet
designation number
2 Mating connector; straight, metal 7PZ31 …M R900223890 08006
for valves with round connector, 6-pole + PE

1) See dimensions on page 13.

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Further information

▶▶ Analog amplifier module type VT 11021 Data sheet 29743

▶▶ Subplates Data sheet 45100
▶▶ Hydraulic fluids on mineral oil basis Data sheet 90220
▶▶ Environmentally compatible hydraulic fluids Data sheet 90221
▶▶ Directional servo valve with mechanical position feedback Operating instructions 29583-XH-B
▶▶ Mating connectors and cable sets for valves and sensors Data sheet 08006
▶▶ Use of non-electrical hydraulic components in an explosive environment (ATEX) Data sheet 07011
▶▶ Selection of filters www.boschrexroth.com/filter
▶▶ Information on available spare parts www.boschrexroth.com/spc

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Notes

Bosch Rexroth AG © All rights reserved to Bosch Rexroth AG, also regarding any disposal,
Industrial Hydraulics exploitation, reproduction, editing, distribution, as well as in the event of
Zum Eisengießer 1 applications for industrial property rights.
97816 Lohr am Main, Germany The data specified above only serve to describe the product. No statements
Phone +49 (0) 93 52 / 40 30 20 concerning a certain condition or suitability for a certain application can be
my.support@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 29583-XH, edition: 2019-10