4WMD 6 M5X/F
Manufacturer: Bosch Rexroth
Material #: R900408478
Model : 4WMD 6 M5X/F
***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 4WMD 6 M5X/F (R900408478) is a high-quality directional spool valve designed for controlling the start, stop, and direction of fluid flow within hydraulic systems. This particular model is part of the WM series, featuring mechanical manual operation through a rotary knob. The valve housing includes a control spool and one or two return springs that hold the spool in a central or initial position when de-energized. When the rotary knob is actuated with a detent, it allows each spool position to be securely locked in place.
The 4WMD 6 M5X/F valve is equipped with a throttle insert to regulate flow during switching processes that may exceed the valve's performance limit. This insert is placed in channel P of the directional valve to ensure smooth and controlled operation under varying conditions.
This model offers versatility through its design; it can be configured as a 2-way or 3-way version, with porting patterns compliant with DIN form A without a locating hole or ISO with a locating hole. Additionally, it incorporates options for inductive position switches and proximity sensors for contactless detection of the spool's position. With its compact size and component series X, this valve supports maximum operating pressures up to 315 bar and can handle maximum flow rates up to specified limits depending on the application requirements.
The Bosch Rexroth 4WMD 6 M5X/F ensures reliability and precision in hydraulic applications where manual control of fluid direction is necessary. Its robust construction and thoughtful design make it suitable for various hydraulic tasks requiring manual intervention and feedback on spool positioning.
$808.00 USD
More are expected on September 18, 2024
Status: This product is temporarily out of stock.
Qty: Delivered as early as September 18, 2024 when ordered in
This product is eligible for factory repair.
Type WM.. valves are mechanical, manually actuated directional spool valves. They control the start, stop and direction of a flow. Directional valves basically consist of housing (1), one type of actuation (2) (rotary knob), control spool (3), and one or two return springs (4). In de-energized state, the return springs (4) maintain the control spool (3) in central or starting position - if the rotary knob is actuated with a detent. The control spool (3) is moved to the desired spool position by means of the type of actuation (2).
Detent
Directional valves with rotary knob are generally designed with detent. Directional valves with hand lever are optionally available as 2 or 3 position valves with detent. Directional valves with roller plunger are generally designed without detent. If types of actuation with detent are used, each spool position can be locked, depending on the valve type.
Throttle insert
The use of a throttle insert is required when due to prevailing operating conditions, flows can occur during the switching processes, which exceed the performance limit of the valve. It is inserted in channel P of the directional valve.
Type 4WM. 6 ..5X/..B..
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qV characteristic curves
|
7 |
Symbol “R” in spool position "b" (A → B) |
|
8 |
Symbols “G” and “T” in central position (P → T) |
|
Symbols |
Direction of flow |
|||
|
P-A |
P-B |
A-T |
B-T |
|
|
A |
3 |
3 |
– |
– |
|
B |
3 |
3 |
– |
– |
|
C |
1 |
1 |
3 |
1 |
|
D |
5 |
5 |
3 |
3 |
|
E |
3 |
3 |
1 |
1 |
|
F |
1 |
3 |
1 |
1 |
|
G |
6 |
6 |
9 |
9 |
|
H |
2 |
4 |
2 |
2 |
|
J |
1 |
1 |
2 |
1 |
|
L |
3 |
3 |
4 |
9 |
|
M |
2 |
4 |
3 |
3 |
|
P |
3 |
1 |
1 |
1 |
|
Q |
1 |
1 |
2 |
1 |
|
R |
5 |
5 |
4 |
– |
|
T |
10 |
10 |
9 |
9 |
|
U |
3 |
3 |
9 |
4 |
|
V |
1 |
2 |
1 |
1 |
|
W |
1 |
1 |
2 |
2 |
|
Y |
5 |
5 |
3 |
3 |
Performance limits
(measured with HLP46, ϑOil = 40 ±5 °C)
Notice!
The specified switching power 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 switching power limits 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 |
|
1 |
E,E1–,M,H,C,D,Y,Q,U,W |
|
2 |
J,L |
|
3 |
A,B |
|
4 |
G,P |
|
5 |
F |
|
6 |
V |
|
7 |
R |
|
8 |
T |
| 1)Example: | |
| Symbol E with spool position "a" → ordering code ..EA.. | |
| Symbol E with spool position “b" → ordering code ..EB.. | |
| 3)Symbol E1-: P → A/B pre-opening | |
| Caution in conjunction with differential cylinders due to pressure intensification! |
Notices!
Representation according to DIN ISO 1219-1.
Hydraulic interim positions are shown by dashes.
|
Type of actuation |
|
Rotary knob “WMD” |
|
|
|
|
Dimensions in mm
Dimensions in mm
|
1 |
Name plate |
|
3 |
Identical seal rings for ports A, B, P, and T |
|
5 |
Valve with 2 spool positions |
|
6 |
Valve with 3 spool positions |
|
10 |
Spool position “a” |
|
11 |
Spool position “0” and “b” (b for valves with 2 spool positions) |
|
12 |
Spool position “b” |
|
13 |
Switching angle 90° right and 90° left for valves with 3 spool positions) |
Subplates according to data sheet 45052 (separate order)
(without locating hole)
G 341/01 (G1/4)
G 342/01 (G3/8)
G 502/01 (G1/2)
(with locating hole)
G 341/60 (G1/4)
G 342/60 (G3/8)
G 502/60 (G1/2)
G 341/12 (SAE-6)1)
G 342/12 (SAE-8)1)
G 502/12 (SAE-10)1)
1) On request
Valve mounting screws (separate order)
Clamping length 42 mm:4 hexagon socket head cap screws, metric
ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
(friction coefficient μtotal = 0.09 to 0.14);
tightening torque MA = 7 Nm ± 10 %,
material no. R913000064
or
4 hexagon socket head cap screws
ISO 4762 - M5 x 50 - 10.9 (self procurement)
(friction coefficient μtotal = 0.12 to 0.17);
tightening torque MA = 8.1 Nm ± 10 %
4 hexagon socket head cap screws UNC
10-24 UNC x 2″ ASTM-A574
(friction coefficient μtotal = 0.19 to 0.24);
tightening torque MA = 11 Nm ± 15 %,
(friction coefficient μtotal = 0.12 to 0.17);
tightening torque MA = 8 Nm ± 10 %,
material no. R978800693
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