BOSCH REXROTH
R900490032
$760.61 USD
- BOSCH REXROTH
- Material:R900490032
- Model:3WMD6A5X/F
Quantity in stock: 0
The Bosch Rexroth 3WMD6A5X/F (R900490032) is a highly functional directional spool valve designed for controlling the start, stop, and direction of fluid flow in hydraulic systems. This particular model is part of the WM series, which is recognized for its robust construction and reliable performance in various applications. The 3WMD6A5X/F valve features a rotary knob type of actuation with a detent mechanism that allows each spool position to be securely locked, ensuring precise control over hydraulic operations. This valve is equipped with one or two return springs that hold the control spool in its central or initial position when not actuated. When the rotary knob is engaged, it shifts the control spool to the desired position, influencing the flow according to user input. For applications where operating conditions could cause flows exceeding the valve's performance limit during switching processes, this model can be fitted with a throttle insert in channel P to mitigate such issues. The 3WMD6A5X/F conforms to standardized porting patterns; it supports DIN form A without locating holes and ISO with locating holes for versatile integration into various hydraulic systems. Additionally, it can accommodate inductive position switches and proximity sensors for contactless detection of spool position, enhancing operational safety and efficiency. With a maximum operating pressure of 315 bar and a maximum flow rate of 60 l/min, this Bosch Rexroth directional valve is engineered to meet demanding requirements while maintaining consistent performance. Its size and component series X reflect its adaptability for medium-scale hydraulic tasks where precise control over fluid dynamics is essential. Whether used in industrial machinery or mobile equipment, this directional valve stands as a reliable component within complex hydraulic circuits.
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..
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01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
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WMD |
6 |
5X |
/ |
F |
/ |
no code |
* |
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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 |
Rotary knob |
WMD |
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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 1) |
J |
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Spool position monitoring 2) |
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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 |
B083) |
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Throttle Ø 1.0 mm |
B103) |
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Throttle Ø 1.2 mm |
B123) |
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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 |
/604) |
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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) 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. | |
| 2) Only for valves with 2 spool positions; not for version “J” | |
| 3) Use if flow > performance limit of the valve, effective in channel P. | |
| 4) 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 | ||
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Weight (approx.) |
kg |
1.4 | |
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Installation position |
any | ||
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Ambient temperature range |
NBR seals |
°C |
-20 … +80 |
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FKM seals |
°C |
-20 … +80 | |
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Maximum actuating torque |
Ncm |
150 | |
hydraulic
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Size |
6 | ||
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Maximum operating pressure |
Port P |
bar |
315 |
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Port A |
bar |
315 | |
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Port B |
bar |
315 | |
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Port T 1) |
bar |
160 | |
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Maximum flow |
l/min |
60 | |
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Flow cross-section (spool position 0) |
Symbol Q |
approx. 6 % of nominal cross-section | |
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Symbol W |
approx. 3 % of nominal cross-section | ||
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Hydraulic fluid |
see table | ||
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Hydraulic fluid temperature range |
NBR seals |
°C |
-30 … +80 |
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FKM seals |
°C |
-20 … +80 | |
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Viscosity range |
mm²/s |
2.8 … 500 | |
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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 |
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Mineral oils |
HL, HLP, HLPD, HVLP, HVLPD |
NBR, FKM |
DIN 51524 |
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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
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7 |
Symbol “R” in spool position "b" (A → B) |
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8 |
Symbols “G” and “T” in central position (P → T) |
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Symbols |
Direction of flow |
|||
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P-A |
P-B |
A-T |
B-T |
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A |
3 |
3 |
– |
– |
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B |
3 |
3 |
– |
– |
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C |
1 |
1 |
3 |
1 |
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D |
5 |
5 |
3 |
3 |
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E |
3 |
3 |
1 |
1 |
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F |
1 |
3 |
1 |
1 |
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G |
6 |
6 |
9 |
9 |
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H |
2 |
4 |
2 |
2 |
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J |
1 |
1 |
2 |
1 |
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L |
3 |
3 |
4 |
9 |
|
M |
2 |
4 |
3 |
3 |
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P |
3 |
1 |
1 |
1 |
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Q |
1 |
1 |
2 |
1 |
|
R |
5 |
5 |
4 |
– |
|
T |
10 |
10 |
9 |
9 |
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U |
3 |
3 |
9 |
4 |
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V |
1 |
2 |
1 |
1 |
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W |
1 |
1 |
2 |
2 |
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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
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Characteristic curve |
Symbol |
|
1 |
E,E1–,M,H,C,D,Y,Q,U,W |
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2 |
J,L |
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3 |
A,B |
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4 |
G,P |
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5 |
F |
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6 |
V |
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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.
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Type of actuation |
|
Rotary knob “WMD” |
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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