BOSCH REXROTH
R900338009
$1,050.34 USD
- BOSCH REXROTH
- Material:R900338009
- Model:4WMDA6M5X/F
Quantity in stock: 0
The Bosch Rexroth 4WMDA 6 M5X/F (R900338009) is a high-quality directional spool valve designed for controlling the start, stop, and direction of fluid flow within a hydraulic system. This valve is part of the WM series, characterized by its mechanical, manually actuated operation. It features a lockable rotary knob that allows for precise control of the valve's function. The 4WMDA 6 M5X/F model incorporates a control spool that can be shifted to various positions by the rotary knob and is held in place by return springs when not energized. This particular model includes a detent mechanism, ensuring that each selected spool position is securely locked during operation. This feature provides stability and consistency in flow control, which is essential for applications requiring precise movement and positioning. Additionally, this valve can be equipped with a throttle insert if necessary to manage excessive flows during switching processes, thus protecting the valve from performance issues. The 4WMDA 6 M5X/F valve is designed with multiple ports conforming to DIN form A standards without locating holes and ISO standards with locating holes. It offers flexibility in configuration as it comes in two-way or three-way versions depending on the application requirements. The robust design ensures maximum operating pressures up to 315 bar and a maximum flow rate of up to l/min. This Bosch Rexroth directional valve also supports the integration of inductive position switches and proximity sensors for contactless position detection, enhancing operational accuracy and feedback within automated systems. Its compact size and component series X designation denote its updated series status, ensuring compatibility with modern hydraulic systems and adherence to current industry standards for performance and reliability.
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) (lockable 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 4WMDA 6 E5X/F
Type 4WM. 6 ..5X/..B..
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01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
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WMDA |
6 |
5X |
/ |
F |
/ |
no code |
* |
|
01 |
3 main ports |
3 |
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4 main ports |
4 |
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Type of actuation |
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02 |
Lockable rotary knob 1) |
WMDA |
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03 |
Size 6 |
6 |
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04 |
Symbols e. g. C, E, EA, EB, etc.; for the possible version, see Symbols and Types of actuation |
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|
05 |
Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) |
5X |
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06 |
Without spring return with detent |
F |
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Corrosion protection |
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07 |
Standard corrosion protection |
ohne Bez. |
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Improved corrosion protection 2) |
J |
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Spool position monitoring 3) |
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08 |
Without position switch |
ohne Bez. |
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Inductive position switch type QM |
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Monitored spool position "a" |
QMAG24 |
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Monitored spool position "b" |
QMBG24 |
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Monitored rest position |
QM0G24 |
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09 |
Without throttle insert |
ohne Bez. |
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Throttle Ø 0.8 mm |
B084) |
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Throttle Ø 1.0 mm |
B104) |
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Throttle Ø 1.2 mm |
B124) |
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Clamping length |
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10 |
42 mm (standard) |
no code |
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Seal material |
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11 |
NBR seals |
ohne Bez. |
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FKM seals |
V |
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Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) |
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12 |
Without locating hole |
ohne Bez. |
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With locating hole |
/605) |
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With locating hole and locking pin ISO 8752-3x8-St |
/62 |
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13 |
Further details in the plain text |
* |
| 1) Key with material no. R900006980 for series 50 to 52 and R900008158 from series 53 is included in the scope of delivery. | |
| 2) The external parts made of metal are galvanized, treated with an anti-corrosion agent or made of stainless steel. This design is also suitable for on-wall applications. | |
| 3) Only for valves with 2 spool positions; not for version “J” | |
| 4) Use if flow > performance limit of the valve, effective in channel P. | |
| 5) Locking pin ISO 8752-3x8-St, material no. R900005694, separate order |
Preferred types and standard units are specified in the EPS (standard price list).
general
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Size |
6 | ||
|
Weight (approx.) |
kg |
1.4 | |
|
Installation position |
any | ||
|
Ambient temperature range |
NBR seals |
°C |
-20 … +80 |
|
FKM seals |
°C |
-20 … +80 | |
|
Maximum actuating torque |
Ncm |
150 | |
hydraulic
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Size |
6 | ||
|
Maximum operating pressure |
Port P |
bar |
315 |
|
Port A |
bar |
315 | |
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Port B |
bar |
315 | |
|
Port T 1) |
bar |
160 | |
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Maximum flow |
l/min |
60 | |
|
Flow cross-section (spool position 0) |
Symbol Q |
approx. 6 % of nominal cross-section | |
|
Symbol W |
approx. 3 % of nominal cross-section | ||
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Hydraulic fluid |
see table | ||
|
Hydraulic fluid temperature range |
NBR seals |
°C |
-30 … +80 |
|
FKM seals |
°C |
-20 … +80 | |
|
Viscosity range |
mm²/s |
2.8 … 500 | |
|
Maximum admissible degree of contamination of the hydraulic fluid 2) |
Class 20/18/15 according to ISO 4406 (c) | ||
| 1) | With symbols A or B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure. |
| 2) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
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Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
|
|
Mineral oils |
HL, HLP, HLPD, HVLP, HVLPD |
NBR, FKM |
DIN 51524 |
|
|
Bio-degradable |
Insoluble in water |
HETG |
NBR, FKM |
VDMA 24568 |
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HEES |
FKM |
|||
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Soluble in water |
HEPG |
FKM |
VDMA 24568 |
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Containing water |
Water-free |
HFDU, HFDR |
FKM |
ISO 12922 |
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Containing water |
HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR, HNBR |
ISO 12922 |
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|
Important information on hydraulic fluids! For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)! The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature.Flame-resistant – containing water: Maximum pressure differential per control edge 50 bar. Pressure pre-loading at the tank port >20% of the pressure differential; otherwise, increased cavitation Life cycle compared to operation with mineral oil HL, HLP 50 to 100% |
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For applications outside these parameters, please consult us!
(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) |
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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! |
Notes!
Representation according to DIN ISO 1219-1.
Hydraulic interim positions are shown by dashes.
|
Type of actuation |
|
Rotary knob “WMDA” |
|
|
|
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Dimensions in mm
Dimensions in mm
|
1 |
Name plate |
|
3 |
Identical seal rings for ports A, B, P, and T |
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