Directional servo-valve RE 29583/05.

11
Replaces: 07.03
1/20

in 4-way design

Type 4WS.2E...

HAD5892 HAD5893
Size 10 Type 4WSE2ED 10-5X/...B...K31EV Type 4WS2EM 10-5X/...B...K31EV
Component series 5X
Maximum operating pressure 315 bar
Maximum flow 180 l/min

Table of contents Features

Contents Page – Valve to control position, force, pressure or velocity
Features 1 – 2-stage servo valve with mechanical or mechanical and elec-
tric return
Ordering code 2
– 1st stage as nozzle flapper plate amplifier
Symbols 3
– Subplate mounting:
Function, section 4, 5
Porting pattern according to ISO 4401
Technical data 6, 7
– Dry control motor, no pollution of the solenoid gaps by the
Available accessories 7 hydraulic fluid
Electrical connection 7, 8 – Can also be used as 3-way version
Characteristic curves 9 to 15 – Wear-free control spool return element
Unit dimensions 16 to 18 – Control
Flushing plate with porting pattern 19 • External control electronics in Eurocard format or in modu-
lar design (separate order), see page 8
• Or control electronics integrated in the valve (OBE)
– Valve and integrated control electronics are adjusted and tested
– Control spool with flow force compensation
– Control sleeve centrically fixed; thus low susceptibility to
temperature and pressure
– Pressure chambers at the control sleeve with gap seal, no
wear of the seal ring
– Filter for 1st stage externally accessible, see pages 16, 17
and 18

Information on available spare parts:

www.boschrexroth.com/spc
2/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Ordering code
10 5X B K31 E V *

Directional servo-valve in Further details in the

4-way design for external plain text 7)
control electronics = 4WS2E V = FKM seals 6)
with integrated control suitable for mineral oil (HL, HLP)
electronics = 4WSE2E according to DIN 51524
Mechanical return =M Spool overlap 5)
Mechanical and electric return = D E = 0 to 0.5 % negative
(only available with
integrated electronics) Electrical connection
K31 = Without mating connector with
Size 10 = 10 connector according to EN 175201-804
Component series 50 to 59 = 5X Mating connector - separate order
(50 to 59: Unchanged installation and connec- see page 7
tion dimensions) Inlet pressure range 4)
Rated flow 1) 210 = 10 to 210 bar
with valve pressure differential Δp = 70 bar 315 = 10 to 315 bar
5 l/min = 5
Pilot oil supply and return 3)
10 l/min = 10
– = Supply external, return external
20 l/min = 20
E = Supply internal, return external
30 l/min = 30
T = Supply external, return internal
45 l/min = 45
ET = Supply internal, return internal
60 l/min = 60
75 l/min = 75 Valves for external control electronics: 2)
11 = Coil no. 11 (30 mA / 85 Ω per coil)
90 l/min = 90
Valves with integrated control electronics:
Command Actual value
value (only available with 4WSE2ED…)
9= ±10 V ±10 V
Rated flow 1) 13 = ±10 mA ±10 mA
The rated flow refers to a 100 % command value signal at
70 bar valve pressure differential (35 bar per control edge). Inlet pressure range 4)
The valve pressure differential must be regarded as refer- Care should be taken that the system pressure is as constant
ence. Other values result in the flow being changed. as possible.
A possible rated flow tolerance of ±10 % must be taken into Pilot pressure range: 10 to 210 bar or 10 to 315 bar
account (see flow signal function page 9).
With regard to the dynamics, the frequency response de-
pendency must be observed within the admissible pres-
Electrical control data 2) sure range.
Valves for external control electronics:
The actuating signal must be formed by a current-controlled Spool overlap 5)
output stage. Servo amplifier see page 7.
The spool overlap in % refers to the nominal stroke of the
Valves with integrated control electronics: control spool.
With the integrated electronics, the command value can be
fed in as voltage (ordering code "9") or - with larger distanc- Other control spool overlaps upon request!
es (> 25 m between control and valve) as current (ordering
code "13"). Seal material 6)
If you need any other sealing material, please contact us!
Pilot oil 3)
Care should be taken that the pilot pressure is as constant as Details in the plain text 7)
possible. An external pilot control via port X is thus often ad-
Here, special requests are to be specified in the plain text. Af-
vantageous. The valve can be operated with a higher pres-
ter receipt of the order, they are checked by the plant and the
sure at X than at P in order to influence the dynamics in a
type designation is amended with a related number.
positive form.
The ports X and Y are also pressurized in case of "Internal"
pilot oil supply.
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 3/20

Symbols
Valves with electric and mechanical return, with OBE Valves with mechanical return, without OBE
(example: 4WSE2ED 10-5X…ET…) (example: 4WS2EM 10-5X…ET…)

U
G
A B
A B
a, b
P T a, b
P T
4/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Function, section
4WS(E)2EM10-5X/... External control electronics, type 4WS2EM10-5X/...
Valves of type 4WS(E)2EM10-5X/... are electrically operated, (separate order)
2-stage directional servo-valves. They are mainly used to External control electronics (servo amplifier) serve the actua-
control position, force and velocity. tion of the valve, amplifying an analog input signal (command
These valves consist of an electro-mechanical converter value) so that with the output signal, the servo valve is actu-
(torque motor) (1), a hydraulic amplifier (nozzle flapper plate ated in a flow-controlled form.
principle) (2) and a control spool (3) in a sleeve (2nd stage), Integrated control electronics, type 4WSE2EM10-5X/...
which is connected to the torque motor via a mechanical return. and 4WSE2ED10-5X/...
An electrical input signal at the coils (4) of the torque motor To amplify the analog input signal, control electronics (10) espe-
generates a force by means of a permanent magnet which cially adjusted to this valve type are integrated. They are located
acts on the armature (5), and in connection with a torque in the torque motor cover cap. The valve zero point can be ad-
tube (6) results in a torque. This causes the flapper plate (7) justed by means of an externally accessible potentiometer.
which is connected to the torque tube (6) via a pin to move 4WSE2ED10-5X/...
from the central position between the two control nozzles (8),
In addition to the mechanical control by the return spring,
and a pressure differential is created across the front faces of
valves of this types are equipped with the electric spool posi-
the control spool. This pressure differential results in the con-
tion detection and control. The control spool position is deter-
trol spool changing its position, which results in the pressure
mined by an inductive position transducer (11). The position
port being connected to one actuator port and, at the same
transducer signal is compared to the command value by inte-
time, the other actuator port being connected to the return
grated control electronics (10). Any possible control deviation
flow port.
is amplified electrically and fed to the torque motor as control
The control spool is connected to the flapper plate or the signal. With the additional electric return, higher dynamical
torque motor by means of a bending spring (mechanical re- values can be achieved by the electric controller gain in the
turn) (9). The position of the control spool is changed until the small signal range than with the purely mechanical version.
feedback torque across the bending spring and the electro- The additionally available mechanical return ensures that in
magnetic torque of the torque motor are balanced and the case the electric voltage supply fails, the valve spool is posi-
pressure differential at the nozzle flapper plate system be- tioned in the zero range.
comes zero.
The valve is only available with integrated control electronics.
The stroke of the control spool and consequently the flow of The valve zero point can be adjusted by means of an exter-
the servo valve are controlled in proportion to the electrical nally accessible potentiometer.
input signal. It must be noted that the flow depends on the
Note:
valve pressure drop.
Changes in the zero point may result in damage to the sys-
tem and may only be implemented by instructed specialists.

1
4
5
6
2
7

Type 4WS2EM10...

3
TA P TB
A B
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 5/20

Section
Type 4WSE2EM10...
10

TA P TB
A B

Type 4WSE2ED10...
10

11

TA P TB
A B
6/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Technical data (For applications outside these parameters, please consult us!)
general
Weight with mechanical return kg 3.56
with mechanical and electric return and inte- kg 3.65
grated control electronics
Installation position Optional, if it is ensured that during start-up of the system the
pilot control is supplied with sufficient pressure (≥ 10 bar).
Storage temperature range °C –20 to +80
Ambient temperature range °C –20 to +60 valve with OBE
–30 to +100 valve without OBE

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

Operating Pilot control stage, pilot oil supply bar 10 to 210 or 10 to 315
pressure Main valve, port P, A, B bar Up to 315
Return flow Port T
pressure Pilot oil return internal bar Pressure peaks < 100 permitted, static < 10
Pilot oil return external bar Up to 315
Port Y bar Pressure peaks < 100 permitted, static < 10
Hydraulic fluid See table page 7
Hydraulic fluid temperature range °C –15 to +80, preferably +40 to +50
Viscosity range mm2/s 15 to 380, preferably 30 to 45
Maximum admissible degree of contamination of the hydrau- Class 18/16/13 1)
lic fluid cleanliness class according to ISO 4406 (c)
Zero flow QV,L 2) pP 4) l pP 4) l pP 4) l pP 4) l pP 4) l
l/min •0.7 •0.9 •1.2 •1.5 •1.7
measured without dither signal 70 bar min 70 bar min 70 bar min 70 bar min 70 bar min
Rated flow Qv rated 3), tolerance ±10 %
with valve differential pressure ∆p = 70 bar l/min 5 10 20 30 45 60 75 90
Maximum control spool stroke possible with mechanical
end position (in case of error) related to nominal stroke % 120 to 170 120 to 150
Pressure gain with 1 % spool stroke change % of pP 4)
(from the hydraulic zero point) ≥ 30 ≥ 60 ≥ 80
Return system Mechanical "M" Mechanical and
electric "D"
Hysteresis (dither-optimized) % ≤ 1.5 ≤ 0.8
Range of inversion (dither-optimized) % ≤ 0.3 ≤ 0.2
Response sensitivity (dither-optimized) % ≤ 0.2 ≤ 0.1
Zero adjustment flow over the entire
operating pressure range % ≤ 3, long-term ≤ 5 ≤2
Zero shift upon change of:
Hydraulic fluid temperature % / 20 °C ≤1 ≤2
Ambient temperature % / 20 °C ≤1 ≤2
Operating pressure 80 to 120 % of pP4) % / 100 bar ≤2 ≤2
Return flow pressure 0 to 10 % pP4) % / bar ≤1 ≤1

1) The cleanliness classes specified for the components must 2) QV, L = Zero flow in l/min
be adhered to in hydraulic systems. Effective filtration pre- 3) QV rated = Rated flow (complete valve) in l/min
vents faults and at the same time increases the service life 4) pP = Operating pressure in bar
of the components.
For the selection of the filters see www.boschrexroth.com/filter
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 7/20

Technical Data (For applications outside these parameters, please consult us!)
Hydraulic fluid Classification Suitable sealing materials Standards
Mineral oils and related hydrocarbons HL, HLP NBR, FKM DIN 51524
Flame-resistant – Water-containing HFC NBR ISO 12922
Important information on hydraulic fluids! – Flame-resistant – water-containing: Maximum pressure
difference per control edge 175 bar, otherwise, increased
– For more information and data on the use of other hydrau-
cavitation erosion!
lic fluids refer to data sheet 90220 or contact us!
Tank pre-loading < 1 bar or > 20 % of the pressure differ-
– There may be limitations regarding the technical valve ence. The pressure peaks should not exceed the maxi-
data (temperature, pressure range, service life, mainte- mum operating pressures!
nance intervals, etc.)!
– The flash point of the process and operating medium used
must be 40 K higher than the maximum solenoid sur-
face temperature.

electric
Return system Mechanical "M" Mechanical and electric "D"
Protection class of the valve according to EN 60529 IP 65 with mating connector mounted and locked
Type of signal Analog
Rated current per coil mA 30
Resistance per coil Ω 85
Inductivity with 60 Hz and Connection in series H 1.0
100 % rated current Connection in parallel H 0.25
In case of actuation using non-Rexroth amplifiers, we recommend a superimposed dither signal

electric, external control electronics (only version "M")

Amplifier Eurocard format Analog Type VT-SR2-1X/... according to data sheet 29980
(separate order) Modular design Analog Type VT 11021 according to data sheet 29743

Important: Information on the environment simulation testing for the areas EMC (electromagnetic compatibility), climate
and mechanical load see data sheet 29583-U (declaration on environmental compatibility).

Available accessories
Service case with test device for continuous valves with Service case with test device for servo valves for ex-
integrated electronics type VT-VETSY-1 according to data ternal electronics type VT-SVTSY-1 according to data
sheet 29685. sheet 29681.

Electrical connection, external control electronics

Type 4WS2EM 10-5X... The electrical connection can be designed as parallel or serial connection. For reasons of
operational safety and the resulting lower coil inductivity, we recommend the connection
in parallel.
The E-F bridge can be used for the electrical determination of the correct connection of
A the plug-in connector and/or for the identification of cable break.
Coil A
C Connection in parallel:
B In the mating connector, connect contact A with B and C with D.
Coil B
D Connection in series:
E In the mating connector, connect contact B with C.
F Electrical control from A (+) to D (–) results in the flow direction P to A and B to T. Inverted
PE electrical control results in the flow direction P to B and A to T.
E → F = bridge
8/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Electrical connection, integrated control electronics

Type 4WSE2EM 10-5X...

Zero point setting

A
B
Mating connec- Current control Voltage control
C
tor assignment Control "13" Control "9"
D
Re A +15 V +15 V
Dither E
Supply voltage B –15 V –15 V
signal F
C ⊥ ⊥
PE
D ±10 mA ±10 V
Command value
E Re = 100 Ω Re ≥ 50 kΩ
Type 4WSE2ED 10-5X... Measuring output F 1) ±10 mA 2) +10 V against ⊥ 2)
Zero point setting for control spool Load max. 1 kΩ Ri ≈ 4.7 kΩ
1) In valves with mechanical return, part F is not used.
2) With nominal spool stroke
A
A
B Current con- Max. 150 mA Max. 150 mA
sumption at the B
C
mating connec- D
D tor port 0 to ±10 mA ≤ 0.2 mA
Re E
E
Sensitivity
F
setting Ri
PE
Dither signal
setting

Supply voltage: ±15 V ±3 %, residual ripple < 1 %

Command value: Command value at the mating connector port D = positive against mating connector port E results
in flow from P to A and B to T.
Measuring output F has positive signal against ⊥.
Command value at the mating connector port D = negative against mating connector port E results
in flow from P to B and A to T.
Measuring output F has negative signal against ⊥.
Measuring output: The voltage or current signal is proportional to the control spool stroke.

Important: Electric signals taken out via control electronics (e.g. actual value) must not be used for switching off
safety-relevant machine functions!

Electrical connection, mating connector

Mating connector according to DIN EN 175.201-804
separate order under Material no. R900223890
(metal version)

A
B F

C E
D
Ø8…Ø13,5

85
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 9/20

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

Flow/load function (tolerance ±10 %) Rated flow
with 100 % command value signal 5 l/min = Curve 1 45 l/min = Curve 5
10 l/min = Curve 2 60 l/min = Curve 6
20 l/min = Curve 3 75 l/min = Curve 7
30 l/min = Curve 4 90 l/min = Curve 8

200 8
7
6
100
90 5
75
60 4
45
40 3
30
Flow in l/min →

20 2
15

10 1

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

Δp = Valve pressure differential (inlet pressure pP minus load pressure pL and minus return flow pressure pT)

Tolerance field of the flow command value function

at constant valve pressure differential
P → A; B → T
110
100
Flow in %
90
80

60

40

20
-100 -80 -60 -40 -20 -5 Tolerance field

Typical 5 20 40 60 80 100
flow curve 20
Command value in %
40

60

80
90
100
110
P → B; A → T
10/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)
Transition function with pressure rating 315 bar, step response without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 5, 10, 20 l/min Rated flow 5, 10, 20 l/min
100 100
90 90
80 80
Spool stroke in % →

Spool stroke in % →
70 70
60 60
50 50
40 40
30 30
20 20
10 10

0 10 20 0 10 20
Time in ms → Time in ms →
40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 5, 10, 20 l/min Rated flow 5, 10, 20 l/min
5 –315 5 –315

0 –270 0 –270
Amplitude ratio in dB →

Amplitude ratio in dB →
Phase angle in° →

Phase angle in° →

–5 –225 –5 –225

–10 –180 –10 –180

–15 –135 –15 –135

–20 –90 –20 –90

–25 –45 –25 –45

–30 0 –30 0
10 100 200 10 20 50 100 200 500 700
20 50 500 700
Frequency in Hz → Frequency in Hz →
5% 25 % 100 %

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude
4WS.2EM 10 4WSE2ED 10
Rated flow 5, 10, 20 l/min Rated flow 5, 10, 20 l/min
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
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 11/20

Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)
Transition function with pressure rating 315 bar, step response without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 30 l/min Rated flow 30 l/min
100 100
90 90
80 80

Spool stroke in % →
Spool stroke in % →

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 →
40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 30 l/min Rated flow 30 l/min
5 –315 5 –315
0 –270 –270
Amplitude ratio in dB →

0
Amplitude ratio in dB →
Phase angle in° →

Phase angle in° →

–5 –225 –225
–5
–10 –180 –10 –180

–15 –135 –15 –135

–20 –90 –20 –90

–25 –45 –25 –45

–30 0 –30 0
10 20 50 100 200 500 700 10 20 50 100 200 500 700
Frequency in Hz → Frequency in Hz →
5% 25 % 100 %

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude
4WS.2EM 10 4WSE2ED 10
Rated flow 30 l/min Rated flow 30 l/min
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
12/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)
Transition function with pressure rating 315 bar, step response without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 45 l/min Rated flow 45 l/min
100 100
90 90
80 80
Spool stroke in % →

Spool stroke in % →
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 →
40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 45 l/min Rated flow 45 l/min
5 5

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

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
2 10 20 50 100 200 300 700 2 10 20 50 100 200 300 700

Frequency in Hz → Frequency in Hz →
5% 25 % 100 %

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude
4WS.2EM 10 4WSE2ED 10
Rated flow 45 l/min Rated flow 45 l/min
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
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 13/20

Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)
Transition function with pressure rating 315 bar, step response without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 60 l/min Rated flow 60 l/min
100 100
90 90
80 80
Spool stroke in % →

Spool stroke in % →
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 →
40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 60 l/min Rated flow 60 l/min
5 5

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

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
2 10 20 50 100 200 300 700 2 10 20 50 100 200 300 700

Frequency in Hz → Frequency in Hz →
5% 25 % 100 %

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude
4WS.2EM 10 4WSE2ED 10
Rated flow 60 l/min Rated flow 60 l/min
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
14/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)
Transition function with pressure rating 315 bar, step response without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 75 l/min Rated flow 75 l/min
100 100
90 90
80 80
Spool stroke in % →

Spool stroke in % →
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 →
40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 75 l/min Rated flow 75 l/min
5 5

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

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
2 10 20 50 100 200 300 700 2 10 20 50 100 200 300 700

Frequency in Hz → Frequency in Hz →
5% 25 % 100 %

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude
4WS.2EM 10 4WSE2ED 10
Rated flow 75 l/min Rated flow 75 l/min
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 300325
Frequency at –90° in Hz → Frequency at –90° in Hz →
40 bar 70 bar 140 bar 210 bar 315 bar
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 15/20

Characteristic curves: Type 4WS.2EM 10 and 4WSE2ED 10 (measured with HLP 32, ϑoil = 40 °C ± 5 °C)
Transition function with pressure rating 315 bar, step response without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 90 l/min Rated flow 90 l/min
100 100
90 90
80 80
Spool stroke in % →

Spool stroke in % →
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 →
40 bar 70 bar 140 bar 210 bar 315 bar

Frequency response with pressure rating 315 bar, stroke frequency without flow
4WS.2EM 10 4WSE2ED 10
Rated flow 90 l/min Rated flow 90 l/min
5 5

0 0
Amplitude ratio in dB →

Amplitude ratio in dB →
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
2 10 20 50 100 200 300 700 2 10 20 50 100 200 300 700

Frequency in Hz → Frequency in Hz →
5% 25 % 100 %

Dependency of the frequencyf at –90° on the operating pressure p and the inlet amplitude
4WS.2EM 10 4WSE2ED 10
Rated flow 90 l/min Rated flow 90 l/min
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 300325
Frequency at –90° in Hz → Frequency at –90° in Hz →
40 bar 70 bar 140 bar 210 bar 315 bar
16/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Unit dimensions: Type 4WS2EM 10 (dimensions in mm)

Mechanical return / external control electronics,
type 4WS2EM 10-5X/…
3 2 1
15 95 68

32
96
80

64
60

10
9,5

M6

10 4 6 7 5 8

3,7
9,5

1 Cap X A B Y
46

65
2 Mating connector
(order separately, see page 7) TA TB
3 Space required for removing the mating connector,
also take care of connection cable!
4 Exchangeable filter element with seals 1,5
Material no.: R961001950 12,5 24 54
102
5 Profile seal for filter screw 16 x 1.5, part of item 4
127
6 Name plate
7 Identical seal rings for ports A, B, P, TA and TB 25,5 9
11

0,01/100
8 Identical seal rings for ports X and Y
Ports X and Y are also pressurized in case of "inter- Rzmax 4 F1 P F2
nal" pilot oil supply. X Y
A B
9 Processed valve mounting faces, porting pattern ac-
68

Required surface quality T T1

cording to ISO 4401-05-05-0-05 of the counterpart
Port T1 is optional and is recommended for reduc- F4 F3
ing the pressure drop from B → T with rated flows
> 45 l/min. 105
10 Valve mounting screws
For reasons of stability, exclusively the following Subplates according to data sheet 45054 must be ordered
valve mounting screws may be used: separately.
4 hexagon socket head cap screws
ISO 4762-M6x70-10.9-flZn-240h-L
(friction coefficient 0.09 – 0.14 according to
VDA 235-101) (included in the delivery)
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 17/20

Unit dimensions: Type 4WSE2EM 10 (dimensions in mm)

Mechanical return / integrated control electronics,
type 4WSE2EM 10-5X/…
4 3 2 1
15 95 75

47
111
80

64
60

10
2,5
M6

11 5 7 8 6 9

3,7
1 Cap with integrated control electronics
2 Electric zero point setting:
9,5

After removal of the SW2.5 plug screw, the zero P

point can be corrected using a potentiometer
3 Mating connector (order separately, see page 7)
X A B Y
46

65
4 Space required for removing the mating connector,
also take care of connection cable! TA TB
5 Exchangeable filter element with seals
Material no.: R961001950
6 Profile seal for filter screw 16 x 1.5, part of item 5

1,5
12,5 24 54
7 Name plate 102
127
8 Identical seal rings for ports A, B, P, TA and TB
9 Identical seal rings for ports X and Y 25,5 10
11

Ports X and Y are also pressurized in case of "inter- 0,01/100

nal" pilot oil supply.
Rzmax 4 F1 P F2
10 Processed valve mounting faces, porting pattern ac- X Y
cording to ISO 4401-05-05-0-05 A B
68

Port T1 is optional and is recommended for reduc- Required surface quality T T1

ing the pressure drop from B → T with rated flows of the counterpart
> 45 l/min. F4 F3
11 Valve mounting screws 105
For reasons of stability, exclusively the following
valve mounting screws may be used:
4 hexagon socket head cap screws
ISO 4762-M6x70-10.9-flZn-240h-L
(friction coefficient 0.09 – 0.14 according to
VDA 235-101) (included in the delivery) Subplates according to data sheet 45054 must be ordered
separately.
18/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Unit dimensions: Type 4WSE2ED 10 (dimensions in mm)

Electric and mechanical return / integrated control electronics,
type 4WSE2ED 10-5X/…
4 3 2 1
15 95 75

47
111
80

64
60

10
44,5 2,5 M6
159

1 Cap with integrated control electronics 11 5 7 8 6 9

3,7
2 Electric zero point setting:
After removal of the SW2.5 plug screw, the zero
point can be corrected using a potentiometer
9,5

3 Mating connector (order separately, see page 7) P

4 Space required for removing the mating X Y
46

connector, also take care of connection cable!

65
A B
5 Exchangeable filter element with seals
Material no.: R961001950 TA TB
6 Profile seal for filter screw 16 x 1.5, part of item 5
7 Name plate
54
1,5
24
8 Identical seal rings for ports A, B, P, TA and TB
102
9 Identical seal rings for ports X and Y
Ports X and Y are also pressurized in case of "inter- 25,5 10
11

nal" pilot oil supply. 0,01/100

10 Processed valve mounting faces, porting pattern ac- F1 P F2
Rzmax 4
cording to ISO 4401-05-05-0-05
X Y
Port T1 is optional and is recommended for reduc- A B
68

ing the pressure drop from B → T with rated flows Required surface quality T T1
> 45 l/min. of the counterpart
11 Valve mounting screws F4 F3
For reasons of stability, exclusively the following 105
valve mounting screws may be used:
4 hexagon socket head cap screws
ISO 4762-M6x70-10.9-flZn-240h-L
(friction coefficient 0.09 – 0.14 according to
Subplates according to data sheet 45054 must be ordered
VDA 235-101) (included in the delivery)
separately.
RE 29583/05.11 4WS.2E... Hydraulics Bosch Rexroth AG 19/20

Flushing plate with porting pattern according to ISO 4401-05-05-0-05 (dimensions in mm)

Symbol

with FKM seals,

TA P X A B Y TB Material no. R900912450, weight: 2 kg

3
1 R-ring 13 x 1.6 x 2 (A, B, P, TA and TB)
2 R-ring 11.18 x 1.6 x 1.78 (X, Y)
3 Mounting screws

46,5
40,5
For reasons of stability, exclusively the following
mounting screws may be used:
4 hexagon socket head cap screws
ISO 4762-M6x50-10.9-flZn-240h-L

9,5
(friction coefficient 0.09 - 0.14 according to 1
VDA 235-101) (included in the delivery)
To ensure proper operation of the servo-valves, it is neces- 2 6,6
sary to flush the system before commissioning. 2
The following values are guidelines for the flushing time

12
per system: P
t = Flushing time in h A B
V = Tank capacity in l
X Y

70
V
t≥ •5 QV = Pump flow in l/min
QV TA TB
When topping up more than 10 % of the tank capacity, flush-
ing must be repeated.
The use of a directional valve with port in accordance with 18 90 2
ISO 4401-05-05-0-05 is suited better than a flushing plate.
This valve can also be used for flushing the actuator ports.
Also refer to catalog sheet RE 07700.
20/20 Bosch Rexroth AG Hydraulics 4WS.2E... RE 29583/05.11

Notes

Bosch Rexroth AG © This document, as well as the data, specifications and other informa-
Hydraulics tion set forth in it, are the exclusive property of Bosch Rexroth AG. It
Zum Eisengießer 1 may not be 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 state-
Phone +49 (0) 93 52 / 18-0 ments concerning a certain condition or suitability for a certain applica-
Fax +49 (0) 93 52 / 18-23 58 tion can be derived from our information. The information given does not
documentation@boschrexroth.de release the user from the obligation of own judgment and verification. It
www.boschrexroth.de must be remembered that our products are subject to a natural process
of wear and aging