4WRE10W1-25-2X/G24K4/V
Manufacturer: Bosch Rexroth
Material #: R900974152
Model : 4WRE10W1-25-2X/G24K4/V
***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 4WRE10W1-25-2X/G24K4/V (R900974152) is a high-performance direct operated proportional directional valve with electrical position feedback designed for subplate mounting. This valve is part of the component series X and is capable of handling a maximum operating pressure of up to 350 bar, with a maximum flow rate of 25 l/min. The device features proportional solenoids with a central thread and detachable coil, which are controlled by external electronics.
The setup of this valve includes a housing with connection surface, control spool with compression springs, and spring plates, along with solenoids equipped with a central thread. The position transducer integrated into the system ensures precise control and feedback. In its deenergized state, the control spool is mechanically held in the central position by return springs associated with the solenoids.
Functionally, when one of the proportional solenoids is energized, it actuates the control spool directly in proportion to the electrical input signal. This action allows for the connection from P to A and B to T through orifice-type cross-sections that have progressive flow characteristics. Upon deactivation of the solenoid, compression springs return the control spool to its central position.
It's important to note that this valve comes in two versions: one with three spool positions and another as type WREA..., which has two spool positions and only includes one solenoid (solenoid a), while employing a plug screw in place of the second proportional solenoid.
Users should be aware that internal leakage may occur over time due to the inherent design principle of these valves. Additionally, precautions must be taken to prevent tank lines from running empty; if necessary, installation conditions may require a preload valve with approximately 5 bar preload pressure.
This Bosch Rexroth valve is designed for applications requiring precise control over flow direction and size and offers robust performance for various hydraulic systems where subplate mounting according to ISO standards is utilized.
$2,896.00 USD
More are expected on November 22, 2024
Status: This product is temporarily out of stock.
Qty: Delivered as early as November 22, 2024 when ordered in
This product is eligible for factory repair.
Type 4WRE...-2X/...
The 4/2 and 4/3 proportional directional valves are designed as direct operated devices in plate design. Operation by means of proportional solenoids with central thread and detachable coil. The solenoids are controlled by external electronics.
Set-up:
The valve basically consists of:
Housing (1) with connection surface Control spool (2) with compression springs (3 and 4) and spring plates (5 and 6) Solenoids (7 and 8) with central thread Position transducer (9)Function:
With de-energized solenoids (7 and 8), central position of the control spool (2) due to compression springs (3 and 4) between the spring plates (5 and 6) Direct actuation of the control spool (2) by the control of one proportional solenoid, e. g. solenoid "b" (8) 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-type cross-sections with progressive flow characteristics Switching off of the solenoid (8) Control spool (2) is returned to the central position by the compression spring (3)In the de-energized state, the control spool (2) is held in a mechanical central position by the return spring of the solenoids. With control spool symbol "V", this position does not correspond to the hydraulic central position! When the electric valve control loop is closed, the control spool is positioned in the hydraulic central position.
Important notice:
The PG fitting (11) must not be opened. Mechanical adjustment of the adjustment nut located below is prohibited and damages the valve!
Valve with two spool positions: (Type 4WRE…A...)
The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valve is, however, only equipped with solenoid “a” (7). Instead of the 2nd proportional solenoid, a plug screw (10) is installed.
Notice:
Due to the design principle, internal leakage which may increase over the life cycle is inherent to the valves.
Notice:
The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed.
(measured with HLP46, ϑÖl = 40 ±5 °C)
Zero flow with central control spool position “V32”
NG6
Rated flow 4 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 8 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 16 l/min at a valve pressure differential of 10 bar
NG6
Rated flow 32 l/min at a valve pressure differential of 10 bar
NG6
Load function with maximum valve opening;Rated flow 4, 8, 16 and 32 l/min;Control spool V
NG6
Symbols
|
With symbol E1-, V1- and W1-, the following applies: |
|
|
P → A: qvmax |
B → T: qv/2 |
|
P → B: qv/2 |
A → T: qvmax |
|
Notice: |
|
Connection at connector
Connection at mating connector
Inductive position transducer
4WRE 6
Dimensions in mm
|
1 |
Valve housing |
|
2 |
Proportional solenoid "a" with inductive position transducer |
|
3 |
Proportional solenoid "b" |
|
4 |
Mating connector "A", color gray, separate order |
|
5 |
Mating connector "B", color black, separate order |
|
6 |
Mating connector for inductive position transducer, separate order |
|
7 |
Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA") |
|
8 |
Identical seal rings for ports A, B, P, and T |
|
9 |
Space required to remove the mating connector |
|
10 |
Name plate |
|
11 |
Machined valve contact surface; Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) |
Recommended valve mounting screws (separate order):
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
tightening torque MA = 7 Nm ± 10%, material no. R913000064 or
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9
tightening torque MA = 8.9 Nm ± 10%
|
1 |
Valve housing |
|
2 |
Proportional solenoid "a" with inductive position transducer |
|
3 |
Proportional solenoid "b" |
|
4 |
Mating connector "A", color gray, separate order |
|
5 |
Mating connector "B", color black, separate order |
|
6 |
Mating connector for inductive position transducer, separate order |
|
7 |
Plug screw for valves with one solenoid (2 spool positions, version "EA" or "WA") |
|
8 |
Identical seal rings for ports A, B, P and T (T1) |
|
9 |
Space required to remove the mating connector |
|
10 |
Name plate |
|
11 |
Machined valve contact surface; Porting pattern according to ISO 4401-05-04-0-05 |
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)Data sheet
Spare parts & repair
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