4WP 6 G6X/N/5
Manufacturer: Bosch Rexroth
Material #: R978919003
Model : 4WP 6 G6X/N/5
***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 4WP 6 G6X/N/5 (R978919003) is a high-performance directional spool valve designed to manage the start, stop, and direction of fluid flow in hydraulic systems. This particular model features a robust housing, pneumatic actuation elements, a control spool, and return springs that ensure reliable operation. The valve is designed to maintain spool position when de-energized by the return springs unless it is an impulse spool variant.
For applications requiring precise flow control during switching processes, this model can be equipped with a throttle insert in channel P to prevent flows that exceed the valve's performance limit. The 4WP 6 G6X/N/5 is part of the WP series that includes variants such as type WP EX without spring return and with detent for locking each spool position, and type WP CXOFN which does not have a defined spool position when de-energized due to the absence of return springs and detent.
This direct-operated directional spool valve offers pneumatic operating methods. It adheres to DIN form A porting pattern without locating holes and ISO standards with locating holes for ease of integration into various hydraulic systems. Subplates required for mounting are available but must be ordered separately. Additionally, this valve can be fitted with inductive position switches or proximity sensors for contactless detection of the spool position.
With its size and component series X, it can withstand a maximum operating pressure of up to several hundred bar and can facilitate a maximum flow rate measured in liters per minute. These specifications make the Bosch Rexroth 4WP 6 G6X/N/5 an essential component for sophisticated hydraulic applications requiring precise control over fluid dynamics within their operational parameters.
$709.00 USD
More are expected on April 28, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 28, 2025 when ordered in
This product is eligible for factory repair.
General information
Valves of type WP are fluidically actuated directional spool valves. They control the start, stop and direction of a flow.
The directional valves basically consist of housing (1), one or two actuation elements (2) (pneumatic actuation cylinder), control spool (3) and one or two return springs (4). The ports for the control are positioned radially (5).
When de-energized, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except impulse spool).
The control spool (3) is moved to the desired spool position by means of the actuation elements.
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 4WP 6 E6X/...
Without spring return, with detent,
version ..OF/..
Directional valves with pneumatic actuation are also available as a 2-spool position valve with detent (7). If actuation elements with detent are used, each spool position can be locked.
Without spring return,
version ..O/..
If actuation elements without return springs and without detent are used, there is no defined spool position in the de-energized state.
Type 4WP 6 C6X/OF/N...
general
|
Size |
6 | ||
|
Weight (approx.) |
Valve with one actuation cylinder |
kg |
1.8 |
|
Valve with two actuation cylinders |
kg |
2 | |
|
Installation position 1) |
any | ||
|
Ambient temperature range |
NBR seals |
°C |
-30 … +80 |
|
FKM seals |
°C |
-20 … +80 | |
| 1) | With version ../O.. (A, C and D) : horizontal |
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 |
mm2 |
approx. 6 % of nominal cross-section |
|
Symbol W |
mm2 |
approx. 3 % of nominal cross-section | |
|
Minimum pilot pressure 2) |
bar |
4 | |
|
Maximum pilot pressure |
bar |
10 | |
|
Pilot volume |
cm³ |
4.24 | |
|
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 3) |
Class 20/18/15 according to ISO 4406 (c) | ||
|
Maximum switching frequency |
Hz |
2 | |
| 1) | With symbols A and B, port T must be used as leakage oil connection if the operating pressure exceeds the admissible tank pressure. |
| 2) | See characteristic curves |
| 3) | 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 oil |
HL, HLP |
FKM, NBR |
DIN 51524 |
|
|
Bio-degradable |
Insoluble in water |
HEES (synthetic esters) |
FKM |
VDMA 24568 |
|
HETG (rape seed oil) |
FKM, NBR |
|||
|
Soluble in water |
HEPG (polyglycols) |
FKM |
VDMA 24568 |
|
|
Other hydraulic fluids on request |
||||
Inductive position switch type QM: electrical connection
The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12 x 1.
For applications outside these parameters, please consult us!
electrical
|
Connection voltage (DC voltage) |
V |
24 | ||
|
Voltage tolerance (connection voltage) |
+30 %/-15 % | |||
|
Admissible residual ripple |
% |
≤ 10 | ||
|
Max. load capacity |
mA |
400 | ||
|
Switching outputs 
|
PNP transistor outputs, load between switching outputs and GND | |||
|
Pinout 
|
1 |
V |
24 | |
|
2, 4 |
Switching output |
mA |
400 | |
|
3 |
Earthing (GND) |
V |
0 | |
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qV characteristic curves
|
Symbol |
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 |
|
Further characteristic curves: |
|
|
7 |
Symbol “R” in switching position “b” (B → A) |
|
8 |
Symbol “G” and “T” in central position (P → T) |
|
9 |
Symbol “H” in central position (P → T) |
Minimum pilot pressure dependent on the tank pressure
At a higher tank pressure, the minimum pilot pressure has to be increased according to this diagram.
Performance limits
(measured with HLP46, ϑOil = 40 ±5 °C)
Notice!
The switching function of the valves is independent from the filtration due to the adhesive effect. To achieve the specified admissible flow values, a full flow filtration with 25 μm is recommended. The flow forces acting within the valves also influence the flow performance.
With 4-way directional valves, the specified flow data are therefore valid for normal operation with 2 directions of flow (e. g. from P to A and simultaneous return flow from B to T).
If there is only one direction of flow, the admissible flow may be significantly lower in critical cases (e. g. if a 4-way directional valve is used as a 3-way directional valve due to blocked port A or B).
|
Characteristic curve |
Symbol |
|
1 |
A, B |
|
2 |
A/O, C, C/O, D, D/O, E, E1-, G, H, J, L, M, Q, U, W, und Y |
|
3 |
F, P |
|
4 |
R |
|
5 |
T |
|
6 |
V |
| 1) |
Example: – Symbol E with spool position "a" → ordering code ..EA.. – Symbol E with spool position “b” → ordering code ..EB.. |
| 2) | Symbol E1-: P → A/B pre-opening |
Attention!
Caution in conjunction with differential cylinders due to pressure intensification!
|
Ordering code |
Type of actuation |
||
|
Symbol |
Actuation side |
Spool return |
|
|
A, C, D |
|
||
|
../O.. |
|
||
|
../OF.. |
|
||
|
B, Y |
|
||
|
E, F G, H J, L M, P Q, R T, U V, W |
a = A |
|
|
|
b = B |
|
||
|
|||
Dimensions in mm
|
|
Required surface quality of the valve contact surface |
|
1 |
Valve with 2 spool positions and 2 actuation cylinders |
|
Valve with 3 spool positions and 2 actuation cylinders |
|
|
2 |
Actuation cylinder “a” |
|
3 |
Actuation cylinder “b” |
|
4 |
Plug screw for valve with 1 actuation cylinder (2 spool positions) |
|
5 |
Optional auxiliary operating device |
|
6 |
Same seal rings for ports A, B, P, T |
|
7 |
Name plate |
|
8 |
Porting pattern according toISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St, material no. R900005694, separate order) |
|
9 |
Connection |
|
10 |
Port with version “WPZ” |
|
11 |
Alternative clamping length (): 22 mm |
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
Clamping length 22 mm:4 hexagon socket head cap screws, metric
ISO 4762-M5 x 30-10.9-flZn-240h-L
(friction coefficient μtotal= 0.09 to 0.14);
tightening torque MA = 7 Nm ± 10 %,
material no. R913000316
or
4 hexagon socket head cap screws
ISO 4762-M5 x 30-10.9 (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 1 1/4 ″
(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. R978802879
Spool position monitoring
Inductive position switch type QM
Dimensions in mm
| 1) | For dimensions, see valve dimensions |
Notice:
The dimensions are nominal dimensions which are subject to tolerances.
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