BOSCH REXROTH
R900730382
- BOSCH REXROTH
- Material:R900730382
- Model:4WMDA 6 R5X/F
Due to extremely high demand, please call 877-366-7226 for availability
The Bosch Rexroth 4WMDA 6 R5X/F (R900730382) is a high-performance directional spool valve designed for controlling the start, stop, and direction of fluid flow within a hydraulic system. This product features a lockable rotary knob for actuation and comes equipped with one or two return springs that ensure the control spool returns to its central or starting position when in the deenergized state. The 4WMDA 6 R5X/F model offers precise control by allowing each spool position to be locked into place using detent mechanisms, which is particularly useful in applications requiring stable operation across various positions. Incorporating a throttle insert in channel P is recommended when operating conditions might lead to flows that exceed the valve's performance limit during switching processes. This addition serves as a safeguard, ensuring smoother and more reliable operation under fluctuating flow conditions. The 4WMDA series valves are available in 2/2 or 3/3 way versions, with porting patterns conforming to DIN form A without locating holes or ISO with locating holes. The specific model here utilizes a rotary knob type of actuation and can be fitted with inductive position switches and proximity sensors for contactless detection, enhancing operational precision and reliability. With a maximum operating pressure of up to 315 bar and capable of handling flow rates up to 60 liters per minute, this valve is suitable for an array of hydraulic applications requiring robust performance. Its component series X signifies its compliance with current industry standards for durability and efficiency. Overall, the Bosch Rexroth 4WMDA 6 R5X/F valve stands out due to its adaptability, precise control features, and compatibility with various sensing technologies.
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 |
|
4 main ports |
4 |
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|
Type of actuation |
||
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02 |
Lockable rotary knob 1) |
WMDA |
|
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 |
|
|
05 |
Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) |
5X |
|
06 |
Without spring return with detent |
F |
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Corrosion protection |
||
|
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 |
|
|
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
|
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
|
Size |
6 | ||
|
Maximum operating pressure |
Port P |
bar |
315 |
|
Port A |
bar |
315 | |
|
Port B |
bar |
315 | |
|
Port T 1) |
bar |
160 | |
|
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 | ||
|
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. |
|
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 |
|
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 |
|
Containing water |
HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR, HNBR |
ISO 12922 |
|
|
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) |
|
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” |
|
|
|
|
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