4WP 10 H3X//12
Manufacturer: Bosch Rexroth
Material #: R900931178
Model : 4WP 10 H3X//12
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth 4WP 10 H3X//12 (R900931178) is a high-performance directional spool valve designed to manage the start, stop, and direction of fluid flow within a hydraulic system. This particular model features a robust housing and is equipped with a pneumatic actuation cylinder for reliable operation. The control spool within the valve can be positioned accurately using the pneumatic actuator, and it is held in place by one or two return springs when not energized—except for version O which behaves differently.
The 4WP 10 H3X//12 valve's design includes throttle inserts that are essential for managing excessive flows that may occur during switching processes, ensuring the valve operates within its performance limits. These throttle inserts are necessary when the operating conditions demand precise control over flow rates that could otherwise surpass the capabilities of the valve.
Built to conform to ISO porting pattern standards, this Bosch Rexroth valve offers versatility in application with its way version porting options. It has been engineered to work efficiently up to a maximum operating pressure of bar and can handle maximum flow rates of l/min, making it suitable for various demanding hydraulic applications where reliable directional control is critical.
Its size and component series X designation indicate that it is part of a modular range, allowing for flexibility in system design and integration. Users can expect consistent performance from this Bosch Rexroth directional spool valve, which has been meticulously crafted to provide precise control over hydraulic flow in sophisticated industrial systems.
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Valves of type WP are fluidically actuated directional spool valves.
They control the start, stop and direction of a flow.
The directional valves basically consist of housing (1), one type of actuation (2.2) (pneumatic actuation cylinder), control spool (3) and one or two return springs (4).
When de-energized, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for version "O").
The control spool (3) is moved to the desired spool position by means of the types of actuation.
Throttle insert
The use of a throttle insert is required when, due to prevailing operating conditions, flows occur during the switching processes which exceed the performance limit of the valve.
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qV characteristic curves
|
Symbol |
Direction of flow |
|||
|
P ‒ A |
P ‒ B |
A ‒ T |
B ‒ T |
|
|
A; B |
6 |
6 |
‒ |
‒ |
|
C |
1 |
2 |
5 |
7 |
|
D |
2 |
2 |
5 |
7 |
|
E |
17 |
16 |
19 |
21 |
|
F |
2 |
3 |
22 |
23 |
|
G |
4 |
4 |
24 |
24 |
|
H |
14 |
14 |
20 |
21 |
|
J |
3 |
3 |
9 |
11 |
|
J73 |
22 |
21 |
23 |
24 |
|
L |
3 |
3 |
9 |
9 |
|
M |
14 |
14 |
6 |
8 |
|
P |
17 |
14 |
20 |
23 |
|
Q |
16 |
17 |
4 |
8 |
|
R |
18 |
21 |
18 |
24 |
|
T |
18 |
4 |
10 |
24 |
|
U |
3 |
3 |
6 |
11 |
|
V |
17 |
17 |
18 |
20 |
|
W |
upon request |
|||
|
Central position: |
|||||
|
Symbol |
Direction of flow |
||||
|
P ‒ A |
P ‒ B |
B ‒ T |
A ‒ T |
P ‒ T |
|
|
H |
12 |
12 |
13 |
13 |
15 |
Performance limits
(measured with HLP46, ϑOil = 40 ±5 °C)
Notice!
The specified performance limits are valid for use with two directions of flow (e. g. from P to A and simultaneous return flow from B to T).
Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from P to A while port B is blocked)!
In such use cases, please consult us!
|
Characteristic curve |
Symbol |
|
11 |
C, C/OF, D, D/OF, E, J, L, M, U |
|
12 |
B |
|
13 |
A |
|
14 |
G |
|
15 |
H |
| 1) | Example:Symbol E with spool position “a” → ordering code ..EA..Symbol E with spool position “b" → ordering code ..EB.. |
Dimensions in mm
Dimensions in mm
Notices!
Deviating from ISO 4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. The dimensions are nominal dimensions which are subject to tolerances. When screwing in/releasing the connection tube on the pilot oil port (9), the bushing (10) must be secured against twisting by using an open-end wrench.Subplates according to data sheet 45054 (separate order)
G 66/01 (G3/8) 1)
G 67/01 (G1/2) 1)
G 534/01 (G3/4) 1)
G 66/12 (SAE-6; 9/16-18) 2)
G 67/12 (SAE-8; 3/4-16) 2)
G 534/12 (SAE-12; 1-1/16-12) 2)
Valve mounting screws (separate order)
4 hexagon socket head cap screws, metric
ISO 4762 - M6 x 40 - 10.9-flZn-240h-L
(friction coefficient μtotal = 0.09 to 0.14);
tightening torque MA = 12.5 Nm ± 10 %,
material no. R913000058
or
4 hexagon socket head cap screws
ISO 4762 - M6 x 40 - 10.9 (self procurement)
(friction coefficient μtotal = 0.12 to 0.17);
tightening torque MA = 15.5 Nm ± 10 %
4 hexagon socket head cap screws UNC
1/4-20 UNC x 1-1/2” ASTM-A574
(friction coefficient μtotal = 0.19 to 0.24);
tightening torque MA = 25 Nm ± 15 %,
(friction coefficient μtotal = 0.12 to 0.17);
tightening torque MA = 19 Nm ± 10 %,
material no. R978800710
With different friction coefficients, the tightening torques are to be adjusted accordingly!
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