1/16
For information regarding the available spare parts see:
www.boschrexroth.com/spc
4/2- and 4/3-way proportional
directional valves, direct operated,
without electrical position feedback,
without/with integrated electronics (OBE)
Types 4WRA and 4WRAE
Nominal sizes 6 and 10
Component series 2X
Maximum operating pressure 315 bar
Maximum flow: 42 l/min (NS6)
75 l/min (NS10)
RE 29055/10.05
Replaces: 08.01
Typ 4WRA 10 …-2X/G24…K4/V
with plug-in connectors and
associated control electronics
(separate order)
Type 4WRAE 6 …-2X/G24K31/.V
with integrated electronics (OBE)
H5964H4678
Overview of contents
Contents Page
Features 1
Ordering details 2
Symbols 3
Function, section 4
Te chnical data 5, 6
Control electronics 6
Electrical connections, plug-in connectors 7
Integrated electronics (OBE) for type 4WRAE 8
Characteristic curves 9...11
Unit dimensions 12 ...15
Features
– Direct operated proportional directional valve without electrical
position feedback and integrated electronics (OBE) for
type 4WRAE
– Control the direction and magnitude of a flow
– Actuation by means of proportional solenoids with central
thread and removable coil
– For subplate mounting:
Connection position to ISO 4401
Subplates to catalogue sheets RE 45052 (NS6) or RE 45054
(NS10) separate order, see page 12 to 15
– Spring centred control spool
– Control electronics
• 4WRAE:
- integrated electronics (OBE) with voltage input or current
input (A1 resp. F1)
• 4WRA:
- digital or analogue amplifier in Eurocard format
(separate order)
- analogue module amplifier
2/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE
RE 29055/10.05
Ordering details
Without integrated
electronics (OBE) = No code
With integrated
electronics (OBE) = E
Nominal size 6 = 6
Nominal size 10 = 10
Spool symbols
P
T
a0b
A
B
a
0
A
B
P
T
= E
E1–
= W
W1–
= EA
= WA
With spool symbols E1– and W1–:
P → A: q
V max
B → T: q
V
/2
P → B: q
V
/2 A → T: q
V max
Note:
With spools W and WA, in the
neutral position, there is a connection
from A to T and B to T with approx.
3 % of the relevant nominal cross-
section.
Further details
in clear text
Seal material
V = FKM seals,
suitable for mineral oil
(HL, HLP) to DIN 51524
Electronic interfaces A1 or F1
for 4WRAE
A1 = Command value input ± 10 V
F1 =
Command value input 4 to 20 mA
No code = For 4WRA
Electrical connections
for 4WRA:
K4
2)
= Without plug-in connector, with
component plug to DIN EN 175301-803
plug-in connector – separate order,
see page 7
for 4WRAE:
K31
2)
= Without plug-in connector, with
component plug to DIN EN 175201-804
plug-in connector – separate order,
see page 7
Special protection
No code = Without special protection
J
1)
= Sea water resistant (only for NS6)
For details regarding the sea water
resistant versions see RE 29055-M
G24 = Supply voltage 24 VDC
2X = Component series 20 to 29
(20 to 29: unchanged installation and connection dimensions)
Nominal flow at a valve pressure differential
∆
p = 10 bar
NS6
07 = 7 l/min
15 = 15 l/min
30 = 26 l/min
NS10
30 = 30 l/min
60 = 60 l/min
4WRA 2X G24 V
*
1)
Other types of electrical protection on request
2)
Only for NS6: for version "J" = sea water resistant only state
"K31"!
A
B
P
T
a
0
a
b
A
B
P
T
a
0
a
b
A
B
P
T
a
0
b
a
b
A
B
P
T
a
0
b
a
b
Hydraulics Bosch Rexroth AG
RE 29055/10.05
4WRA; 4 WRAE
3/16
Symbols
Without integrated electronics
Type 4WRA…
Types 4WRA…EA…; 4WRA…WA…
With integrated electronics (OBE)
Type 4WRAE…
Types 4WRAE…EA…; 4WRAE…WA…
ATB
(P)
„a”
„b”
53
1
2 4 8.1 6
A
B
A
BP
T
T
„a”
„b”
5
31 2
4
8.2
6
7
4/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE
RE 29055/10.05
Function, section
The 4/2- and 4/3-way proportioanl directional valves are
designed as direct operated components for subplate mounting.
They are actuated by means of proportional solenoids with
central thread and removable coil. The solenoids are controlled
either by external control electronics (type 4WRA) or by
integrated control electronics (type 4WRAE).
Design:
The valves basically consist of:
– Housing (1) with mounting surface
– Control spool (2) with compression springs (3 and 4)
– Solenoids (5 and 6) with central thread
– Optional integrated electronics (7)
Valve with 2 spool positions:
(Type 4WRA…A…)
In principle, the function of this valve version corresponds to
that of the valve with 3 spool positions. However, the valves
with 2 spool positions are only fitted with solenoid "a". In-
stead of the the 2nd proportional solenoid a plug (8.1) is fitted
for NS 6 or for NS 10 a cover (8.2).
Function:
– With the solenoids (5 and 6) de-energised, the control spool
(2) is held in the central position by compression springs (3
and 4)
– Direct actuation of the control spool (2) by energising a
proportional solenoid
E.g. energinsaion of solenoid "b" (6)
→ The control spool (2) is moved to the left in proportion to
the electrical input signal
→ connection from P to A and B to T via orifice-like cross-
sections with progressive flow characterisics
– De-energisation of the solenoid (6)
→ The control spool (2) is returned to the central position by
compression spring (3)
Type 4WRA 6…-2X/…
Type 4WRAE 10…-2X/…
Note for type 4WRA 6…-2X/…:
Draining of the tank line is to be avoided. With the appropriate
installation conditions, a back pressure valve is to be installed
(back pressure approx. 2 bar).
Hydraulics Bosch Rexroth AG
RE 29055/10.05
4WRA; 4 WRAE
5/16
Technical data (for applications outside these parameters, please consult us!)
General
Nominal size NS
610
Installation optional, preferably horizontal
Storage temperature range °C –20 to +80
Ambient 4WRA °C –20 to +70
temperature range 4WRAE °C –20 to +50
Weight 4WRA kg 2.0 6.6
4WRAE kg 2.2 6.8
Hydraulic (measured with HLP46,
ϑ
oil
= 40 °C ± 5 °C)
Max. operating pressure Ports A, B, P bar 315
Port T bar 210
Nominal flow q
V nom
at
∆
p = 10 bar
l/min 7, 15, 26 30, 60
Max. permissible flow l/min 42 (80)
1)
75 (140)
1)
Pressure fluid mineral oil (HL, HLP) to DIN 51524
other pressure fluids on request!
Pressure fluid temperature range °C –20 to +80 (preferably +40 to +50)
Viscosity range mm
2
/s 20 to 380 (preferably 30 to 46)
Max. permissible degree of pressure fluid contamination
cleanlisness class to ISO 4406 (c)
class 20/18/15
2)
Hysteresis % ≤ 5
Reversal error % ≤ 1
Response sensitivity % ≤ 0.5
1)
Max. permissible flow with a dual flow path
2)
The cleanliness class stated for the components must be
adhered too in hydraulic systems. Effective filtration prevents
faults from occurring and at the same time increases the
component service life.
For the selection of filters see catalogue sheets RE 50070,
RE 50076, RE 50081, RE 50086 and RE 50088.
6/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE
RE 29055/10.05
Technical data (for applications outside these parameters, please consult us!)
Electical
Nominal size NS
610
Voltage type DC
Command value signal Voltage input „A1“ V ±10
with type WRAE Current input „F1“ mA 4 to 20
Max. current per
solenoid
A 2.5
Solenoid coil Cold value at 20 °C
Ω
2
resistance Max. warm value
Ω
3
Duty % 100
Max. coil temperature
1)
°C 150
Electrical connections 4WRA with component plug to DIN EN 175301-803 or ISO 4400
see page 7 plug-in connector to DIN EN 175301-803 or ISO 4400
2)
4WRAE with component plug to DIN EN 175201-804
plug-in connector DIN EN 175201-804
2)
Valve protection to EN 60529 IP65 with mounted and fixed plug-in connector
Control electronics
For 4WRA
Digital amplifier in Eurocard format
2)
VT-VSPD-1-2X
( to RE 30523 - middle of 2006)
Analogue amplifier in Eurocard format
2)
VT-VSPA2-1-2X/… to RE 30110
Analogue module amplifier
2)
VT-MSPA2-1-1X
to RE
30228
For 4WRAE integrated into the valves, see page 8
Analogue command value module VT- SWMA-1-1X/... to RE 29902
Analogue command value module VT-SWMKA-1-1X/... to RE 29903
Digital command value card VT-HACD-1-1X/… to RE 30143
Analogue command value card
VT-SWKA-1-1X/... to RE 30255
Supply voltage Nominal voltage VDC 24
4WRAE, 4WRA
3)
Lower limiting value V 21 / 22 (4WRA);
19 (4WRAE)
Upper limiting value V 35
Amplifier current
I
max
A1.8
consumption Max. impulse current A 3
1)
Due to the occurring surface temperature of the solenoid
coils, the European Standards DIN EN 563 and DIN EN 982
must be taken into account!
2)
Separate order
3)
With Bosch Rexroth AG control electronics
Note: For details regarding the environmental
simulation test covering EMC (electro-
magnetic compatibility), climate and
mechanical loading see RE 29055-U
(declaration regarding environmental
compatibility).
PE
1
2
PE
1
2
PE
12
PE
12
27,5
18
43
10
34,2
5,5
1
1
2
10A
250V
GDM
1 Fixing screws M3
Tightening torque M
A
= 0.5 Nm
A
F
E
D
C
B
Ø6,5…11
Ø27
91
Ø8…Ø13,5
85
Hydraulics Bosch Rexroth AG
RE 29055/10.05
4WRA; 4 WRAE
7/16
Electrical connection, plug-in connectors
For type WRA
(without integrated electronics – not for version "J" = sea water resistant)
Plug-in connector CECC 75 301-803-A002FA-H3D08-G
to DIN EN 175301-803 or ISO 4400
Solenoid a, colour grey
Separate order: Material No. R901017010
Solenoid b, colour black
Separate order: Material No. R901017011
For type WRAE
(with integrated electronics (OBE) and for version "J" = sea water resistant)
For pin allocation, see block circuit diagram on page 8
Plug-in connector to DIN EN 175201-804
Separate order: Material No. R900021267
(plastic version)
To amplifier
To amplifier
Plug-in connector to DIN EN 175201-804
Separate order: Material No. R900223890
(metal version)
Connection on component plug Connection on plug-in connector
A
B
C
D
E
F
PE
B
A
E
D
U
U
U
I
U
I
+ U
i
0 V
– U
i
U
U
Σ
8/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE
RE 29055/10.05
Ramp
generator
4)
Pin allocation
Contact Signal
Supply A 24 VDC (19 to 35 VDC)
voltage B GND
Cn.c.
1)
Differential D
Com. value (± 10 V / 4 to 20 mA)
amplifier input E reference potential
Fn.c.
Block circuit diagram / connection allocation
Com. value: Positive command value (0 to 10 V or 12 to 20 mA) at D and reference potential to E causes flow from P to A and B
to T.
Negative command value (0 to – 10 V or 12 to 4 mA) at D and reference potential to E causes flow from P to B and A
to T.
For valves with a solenoid on side „A“ (spool variants EA and WA) a positive command value at D and reference
potential to E
(NS 6: 4 to 20 mA and NS 10: 12 to 20 mA) causes flow from P to B and A to T.
Connection cable: Recommendation: – up to 25 m cable length type LiYCY 5 x 0.75 mm
2
– up to 50 m calbe length type LiYCY 5 x 1.0 mm
2
External diameter 6.5 to 11 mm
Connect screen to PE only on the supply side.
1)
Contacts C and F must not be connected!
Integrated control electronics (see below)
Pin allocation of the component plug
Integrated electronics (OBE) for type WRAE
24V
GND
Differential
amplifier
Summator
Protective
conductor
2; 3)
Com. value
Ref. potential
Output stage
5)
Power supply unit
Low voltage
detection
6)
Step function
generator
Interlock
Supply voltage
2)
PE is connected to the cooling body and the valve housing
3)
Protective conductor screwed to the valve housing and cover
4)
Ramp can be externally adjusted from 0 to 2.5 s; the same applies for T
up
and T
down
5)
Output stages current regulated
6)
Low voltage detection is not carried out for component type 4WRAE 10-2X.
4)
Interface Integrated electronics (OBE) Valve
Output stage
5)
0
50 60
70
90
80
100
30
20
10
5
4
3
2
1
30
40
40
50
20
0
50
60
70
90
80
100
30
20
10
5
4
3
2
1
30
40
20
0
50 60
70 9080
100
30
20
10
5
4
3
2
1
30 40
20
20 30 40 50 60 70 80 90 100
10
40
60
20
30
50
70
5
4
3
2
1
20 30 40 50 60 70 80 90 100
20
40
60
80
3
2,4
5
1
100
Hydraulics Bosch Rexroth AG
RE 29055/10.05
4WRA; 4 WRAE
9/16
Characteristic curves (measured with HLP46,
ϑ
oil
= 40 °C ± 5 °C) NS6
Command value in % →
Flow in l/min →
7 l/min nominal flow at 10 bar valve pressure differential
Command value in %
→
Flow in l/min →
15 l/min nominal flow at 10 bar valve pressure differential
Command value in % →
Flow in l/min →
30 l/min nominal flow at 10 bar valve pressure differential
1
∆
p = 10 bar constant
2
∆
p = 20 bar constant
3
∆
p = 30 bar constant
4
∆
p = 50 bar constant
5
∆
p = 100 bar contant
∆
p = Valve pressure differential (inlet pressure p
P
minus load
pressure p
L
and minus return pressure p
T
)
30 l/min nominal flow at 10 bar valve pressure differential
60 l/min nominal flow at 10 bar valve pressure differential
Command value in % →
Flow in l/min →
Command value in % →
Flow in l/min →
P → A / B → T
or
P → B / A → T
P → A / B → T
or
P → B / A → T
P → A / B → T
or
P → B / A → T
P → A / B → T
or
P → B / A → T
P → A / B → T
or
P → B / A → T
Characteristic curves (measured with HLP46,
ϑ
oil
= 40 °C ± 5 °C) NS10
∆
p = Valve pressure differential (inlet pressure p
P
minus load
pressure p
L
and minus return pressure p
T
)
1
∆
p = 10 bar constant
2
∆
p = 20 bar constant
3
∆
p = 30 bar constant
4
∆
p = 50 bar constant
5
∆
p = 100 bar contant
100
90
80
70
60
50
40
30
20
10
04080120 160 200
0 – 100
0 – 75
0 – 50
0 – 25
0
20 40 60 80
050
100
150
250
200
300
30
20
10
4
3
2
1
40
50
5
6
7
0
50
100
150
250
200
300
30
20
10
4
3
2
1
5
6
7
0
50
100
150
250
200
300
30
20
10
4
3
2
1
5
6
7
10/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE RE 29055/10.05
Characteristic curves (measured with HLP46,
ϑ
oil
= 40 °C ± 5 °C) NS6
Performance limit, nominal flow 7 l/min Performance limit, nominal flow 15 l/min
Performance limit, nominal flow 30 l/min
Flow in l/min →
1
Com. value = 40 %
2
Com. value = 50 %
3
Com. value = 60 %
4
Com. value = 70 %
5
Com. value = 80 %
6
Com. value = 90 %
7
Com. value = 100 %
Valve pressure differential in bar →
Transient functions with stepped form of electrical input
signals
Types 4WRA and 4WRAE
Time in ms
→
Signal change in %
Stroke in % →
Flow in l/min →
Valve pressure differential in bar →
Flow in l/min →
Valve pressure differential in bar →
P → A / B → T
or
P → B / A → T
P → A / B → T
or
P → B / A → T
P → A / B → T
oder
P → B / A → T
If the performance limits are exceeded then flow forces occur
which lead to uncontrolled spool movements.
100
90
80
70
60
50
40
30
20
10
060120 180 240 300 0 40 80 120 160
0 – 100
0 – 75
0 – 50
0 – 25
30
70
80
60
40
20
10
90
050100
50
0
100
150 250200 300
7
6
5
4
3
2
1
050100
50
0
70
150 250200 300
60
40
30
20
10
7
6
5
4
3
2
1
Hydraulics Bosch Rexroth AG
RE 29055/10.05 4WRA; 4 WRAE
11/16
Characteristic curves (measured with HLP46,
ϑ
oil
= 40 °C ± 5 °C) NS10
Performance limit, nominal flow 30 l/min Performance limit, nominal flow 60 l/min
Flowin l/min →
1
Com. value = 40 %
2
Com. value = 50 %
3
Com. value = 60 %
4
Com. value = 70 %
5
Com. value = 80 %
6
Com. value = 90 %
7
Com. value = 100 %
Valve pressure differential in bar →
Transient functions with stepped form of electrical input
signals
Time in ms
→
Signal change in %
Stroke in % →
Flow in l/min →
Valve pressure differential in bar →
P → A / B → T
or
P → B / A → T
P → A / B → T
or
P → B / A → T
If the performance limits are exceeded then flow forces occur
which lead to uncontrolled spool movements.
44
23
47
85,5
15
8
143,5
69
13,5
201
42
a b
2
4.1
5
1
4.2
3
6
7
9
47
T
P
72
8
15
A
F4
F3
B
F1
F2
79,5
(121,5)
8,5
A B
G
0,01/100mm
Rzmax 4
12/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE RE 29055/10.05
Subplates to catalogue sheet RE 45052 and valve fixing
screws must be ordered separately.
Subplates: G341/01 (G1/4)
G342/01 (G3/8)
G502/01 (G1/2)
Valve fixing screws (separate order)
The following valve fixing screws are recommended:
–
4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
(friction value
µ
total
= 0.09 to 0.14)
Tightening torque M
A
= 7 Nm ± 10%
Material No. R913000064 (separate order)
or
– 4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9
(friction value
µ
total
= 0.12 to 0.17)
Tightening torque M
A
= 8.9 Nm ± 10%
Unit dimensions: Type 4WRA 6 (nominal dimensions in mm) NS6
Required surface finish of the
valve mounting surface
1
Valve hounsing
2
Proportional solenoid "a"
3
Proportional solenoid "b"
4.1
Plug-in connector "A", colour grey, separate order,
see page 7
4.2
Plug-in connector "B", colour black, separate order,
see page 7
5
Name plate
6
Identical seal rings for ports A, B, P and T
7
Plug for valves with one solenoid
(2 switched positions, versions EA or WA)
8
Space required to remove the plug-in connector
9
Machined valve mounting surface,
Connection location to ISO 4401 (with locating pin hole)
Code: 4401-03-02-0-94 (explanation to ISO 5783)
Deviation from the standard:
- without locating pin hole „G“
- ports P, A, B and T mit Ø8 mm
Tolerances to: – General tolerances ISO 2768-mK
44
23
47
112,5
143,5
69
13,5
201
42
a b
50
253
9
2
458
1
73
6
10
79,5
(121,5)
8,5
47
T
P
72
8
15
A
F4
F3
B
F1
F2
G
0,01/100mm
Rzmax 4
Hydraulics Bosch Rexroth AG
RE 29055/10.05 4WRA; 4 WRAE
13/16
1
Valve housing
2
Proportional solenoid "a"
3
Proportional solenoid "b"
4
Plug-in connector to DIN EN 175201-804,
separate order, see page 7
5
Name plate
6
Identical seal rings for ports A, B, P und T
7
Plug for valves with one solenoid
(2 switched positions, versions EA or WA)
8
Integrated electronics (OBE)
9
Space required for the connection cable
and to remove the plug-in connector
10
Machined valve mounting surface,
Connection location to ISO 4401 (with locating pin hole)
Code: 4401-03-02-0-94 (explanation to ISO 5783)
Deviation from the standard:
- without locating pin hole „G“
- ports P, A, B and T mit Ø8 mm
Subplates to catalogue sheet RE 45052 and valve fixing
screws must be ordered separately.
Subplates: G341/01 (G1/4)
G342/01 (G3/8)
G502/01 (G1/2)
Valve fixing screws (separate order)
The following valve fixing screws are recommended:
–
4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
(friction value
µ
total
= 0.09 to 0.14)
Tightening torque M
A
= 7 Nm ± 10%
Material No. R913000064 (separate order)
or
– 4 S.H.C.S. ISO 4762 - M5 x 50 - 10.9
(friction value
µ
total
= 0.12 to 0.17)
Tightening torque M
A
= 8.9 Nm ± 10%
Required surface finish of the
valve mounting surface
Tolerance to: – General tolerances to ISO 2768-mK
Unit dimensions: Type 4WRAE 6 ...K31/..V (nominal dimensions in mm) NS6
70
40
82
119
15
92 4.1 6
5
1 4.2
3
a
b
102
305
224,5
24
78
30
10
125,5
(179,5)
(21)
BA
104
25
72
13
F1 F2
P
BA
T1
T
F3F4
32,5±0,2
50,8±0,2
0,01/100mm
Rzmax 4
14/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE RE 29055/10.05
1
Valve housing
2
Proportional solenoid "a"
3
Proportional solenoid "b"
4.1
Plug-in connector "A", colour grey, separate order,
see page 7
4.2
Plug-in connector "B", colour black, separate order,
see page 7
5
Name plate
6
Valve bleed screw
Note: The valves are bled before delivery.
7
Identical seal rings for ports A, B, P and T (T1)
8
Cover for valves with one solenoid
(2 switched positions, versions EA or WA)
9
Space required to remove the plug-in connector
10
Machined valve mounting surface,
Connection location to ISO 4401 (with locating pin hole)
Code: 4401-05-04-0-94 (explanation to ISO 5783)
Deviation from the standard: Port T1 Ø11.2 mm
Subplates to catalogue sheet RE 45054 and valve fixing
screws must be ordered separately.
Subplates: G66/01 (G3/8)
G67/01 (G1/2)
G534/01 (G3/4)
Valve fixing screws (separate order)
The following valve fixing screws are recommended:
–
4 S.C.H.S. ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
(friction value
µ
total
= 0.09 to 0.14)
Tightening torque M
A
= 12.5 Nm ± 10%,
Material No. R913000058 (separate order)
or
– 4 S.C.H.S. ISO 4762 - M6 x 40 - 10.9
(friction value
µ
total
= 0.12 to 0.17)
Tightening torque M
A
= 15,5 Nm ± 10%
Unit dimensions: Type 4WRA 10 (nominal dimensions in mm) NS10
Required surface finish of the
valve mounting surface
Tolerances to: – General tolerances to ISO 2768-mK
11
70
40
82
141
42 6
59
1
3
a
b
102
305
224,5
24
50
10
78
30
125,5
(179,5)
(21)
104
25
72
13
F1 F2
P
BA
T1
T
F3F4
32,5±0,2
50,8±0,2
0,01/100mm
Rzmax 4
Hydraulics Bosch Rexroth AG
RE 29055/10.05 4WRA; 4 WRAE
15/16
1
Valve housing
2
Proportional solenoid "a"
3
Proportional solenoid "b"
4
Plug-in connector to DIN EN 175201-804,
separate order, see page 7
5
Name plate
6
Valve bleed screw
Note: The valves are bled before delivery.
7
Identical seal rings for ports A, B, P, T
8
Cover for valves with one solenoid
(2 switched positions, versions EA or WA)
9
Integrated electronics (OBE)
10
Space required for the connection cable
and to remove the plug-in connector
11
Machined valve mounting surface,
connection location to ISO 4401 (with locating pin hole)
Code: 4401-05-04-0-94 (explanation to ISO 5783)
Deviation from the standard: Port T1 Ø11.2 mm
Subplates to catalogue sheet RE 45054 and valve fixing
screws must be ordered separately.
Subplates: G66/01 (G3/8)
G67/01 (G1/2)
G534/01 (G3/4)
Valve fixing screws(separate order)
The following valve fixing screws are recommended:
–
4 S.H.C.S. ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
(friction value
µ
total
= 0.09 to 0.14)
Tightening torque M
A
= 12.5 Nm ± 10%,
Material No. R913000058 (separate order)
or
– 4 S.H.C.S. ISO 4762 - M6 x 40 - 10.9
(friction value
µ
total
= 0.12 to 0.17)
Tightening torque M
A
= 15,5 Nm ± 10%
Unit dimensions: Type 4WRAE 10 (nominal dimensions in mm) NS10
Required surface finish of the
valve mounting surface
Tolerances to: – General tolerances to ISO 2768-mK
Bosch Rexroth AG
Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Telefon +49 (0) 93 52 / 18-0
Telefax +49 (0) 93 52 / 18-23 58
documentation@boschrexroth.de
www.boschrexroth.de
© This document, as well as the data, specifications and other informations
set forth in it, are the exclusive property of Bosch Rexroth AG. Without their
consent it may not be reproduced or given to third parties.
The data specified above only serves to describe the product. No statements
concerning a certain condition or suitability for a certain application can be
derived from our information. The details stated do not release you from the
responsibility for carrying out your own assessment and verification. It must
be remembered that our products are subject to a natural process of wear
and ageing.
16/16 Bosch Rexroth AG Hydraulics
4WRA; 4 WRAE RE 29055/10.05
Notes
