4WE6X7-6X/EW110RNXEZ2/V
Manufacturer: Bosch Rexroth
Material #: R901112822
Model : 4WE6X7-6X/EW110RNXEZ2/V
***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 4WE6X7-6X/EW110RNXEZ2/V (R901112822) is a high-performance directional spool valve designed for controlling the start, stop, and direction of flow in hydraulic systems. This particular model is equipped with two solenoids, without a detent, meaning that in its deenergized state, it does not maintain a defined spool position. The valve features a housing, control spool, one or two return springs and can be manually overridden if necessary.
The solenoids operate with wet-pin design ensuring reliable actuation of the control spool by pushing it from its rest position to the required end position. This action allows for precise control of the flow direction from ports P-A and B-T or P-B and A-T. Upon deexcitation, the return spring returns the control spool to its rest position.
This model is particularly suitable for use in potentially explosive atmospheres as it complies with Explosion Protection Directive EU standards (II G), featuring Ex eb mb IIC T Gb type protection for the valve solenoids according to EN standards. It also adheres to ISO porting patterns and offers both DC and AC solenoid options. The electrical connection is facilitated through an individual connection with a cable gland.
Engineered for durability and performance, this valve has an inherent internal leakage which may increase over time due to design reasons. It supports a maximum operating pressure of up to 350 bar and can handle maximum flow rates as detailed in specific configurations. Users are advised to employ separate return lines or install a check valve in the tank line to prevent unintended movements of the control spool caused by pressure peaks when using valves with detent. Additionally, when operating conditions cause flows that exceed the performance limit of the valve during switching processes, the use of a throttle insert (Type WE EX.E..NXE...) is required.
$4,341.00 USD
More are expected on April 14, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 14, 2025 when ordered in
This product is eligible for factory repair.
Directional valves of type WE are solenoid-actuated directional spool valves. They control the start, stop and direction of a flow.
The directional valves basically consist of the housing (1), one or two solenoids (2), the control spool (3), and one or two return springs (4).
In the de-energized condition, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for impulse spools). The control spool (3) is actuated by wet-pin solenoids (2).
To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil.
The force of the solenoid (2) acts via the plunger (5) on the control spool (3) and pushes the latter from its rest position to the required end position. This enables the necessary direction of flow from P → A and B → T or P → B and A → T.
After de-excitation of the solenoid (2), the return spring (4) pushes the control spool (3) back to its rest position.
An optional manual override (6) allows control spool (3) to be moved without solenoid energization.
Without spring return "O" (only possible with symbols A, C and D)
This version is a directional valve with two spool positions and two solenoids without detent.
In the de-energized condition, there is no defined spool position.
With spring return "OF"(impulse spool, only possible with symbols A, C and D)
This version is a directional valve with two spool positions, two solenoids and one detent. It alternately locks the two spool positions and the solenoid therefore does not need to be permanently energized.
Notice:
Pressure peaks in the tank line to two or several valves can result in unintended movements of the control spool in the case of valves with detent! We therefore recommend that separate return lines be provided or a check valve installed in the tank line.
For design reasons, internal leakage is inherent to the valves, which may increase over the life cycle.
Type 4WE 6 E6X/.E..NXE...
Throttle insert "...B"
The use of a throttle insert is required when, due to prevailing operating conditions, flows occur during the switching processes, which exceed the performance limit of the valve.
Characteristic curves
(measured with HLP46, ϑÖl = 40 ±5 °C)
Δp-qV characteristic curves
Δp-qV characteristic curves
|
Symbol |
Direction of flow |
|||||
|
P – A |
P – B |
A – T |
B – T |
B – A |
P – T |
|
|
A, B |
3 |
3 |
– |
– |
– |
– |
|
C46, C |
1 |
1 |
3 |
1 |
– |
– |
|
D46, D, Y |
5 |
5 |
3 |
3 |
– |
– |
|
E |
3 |
3 |
1 |
1 |
– |
– |
|
F |
1 |
3 |
1 |
1 |
– |
– |
|
T |
10 |
10 |
9 |
9 |
– |
8 |
|
H |
2 |
4 |
2 |
2 |
– |
9 |
|
J, Q |
1 |
1 |
2 |
1 |
– |
– |
|
L |
3 |
3 |
4 |
9 |
– |
– |
|
M |
2 |
4 |
3 |
3 |
– |
– |
|
P |
3 |
1 |
1 |
1 |
– |
– |
|
R |
5 |
5 |
4 |
– |
7 |
– |
|
V |
1 |
2 |
1 |
1 |
– |
– |
|
W |
1 |
1 |
2 |
2 |
– |
– |
|
U |
3 |
3 |
9 |
4 |
– |
– |
|
G, G3 |
6 |
6 |
9 |
9 |
– |
8 |
|
G73 |
20 |
20 |
19 |
19 |
– |
16 |
|
E67 |
14 |
13 |
11 |
12 |
– |
– |
|
B9 |
17 |
15 |
– |
– |
– |
– |
|
B73 |
18 |
21 |
– |
– |
– |
– |
Δp-qV characteristic curves
Δp-qV characteristic curves
Δp-qV characteristic curves
|
Symbol |
Direction of flow |
|||||
|
P – A |
P – B |
A – T |
B – T |
B – A |
P – T |
|
|
J73 |
24 |
25 |
23 |
22 |
– |
– |
|
J19 |
27 |
– |
39 |
39 |
– |
– |
|
X7 |
29 |
– |
– |
28 |
– |
– |
|
X46 |
32 |
33 |
31 |
30 |
– |
– |
|
J32 |
22 |
– |
– |
40 |
– |
– |
|
D19 |
36 |
– |
38 |
37 |
– |
– |
|
Q48 |
42 |
41 |
– |
– |
– |
43 |
Performance limits
(measured with HLP46, ϑOil = 40 ±5 °C)
Notice:
The specified performance limits are valid for use with two directions of flow (e. g. from P → A and simultaneous return flow from B → T).
Due to the flow forces acting within the valves, the admissible performance limit may be considerably lower with only one direction of flow (e. g. from P → A while port B is blocked).
In such cases, please consult us.
The performance limits were determined when the solenoids were at operating temperature, at 10 % undervoltage and without tank preloading.
Version "G24"
|
Characteristic curve |
Symbol |
|
1 |
A, B |
|
2 |
J, L, U |
|
3 |
V |
|
4 |
D, C, Y |
|
5 |
Q, W |
|
6 |
E |
|
7 |
A/O, A/OF |
|
8 |
F, P |
|
9 |
T |
|
10 |
G |
|
11 |
H, D/O |
|
12 |
E1 1), R2), M |
| 1) | P – A/B pre-opening |
| 2) | Return flow from actuator to tank |
|
Characteristic curve |
Symbol |
|
13 |
A9/B9 |
|
14 |
E67 |
|
15 |
J19 (B–T) |
|
16 |
B73 |
|
17 |
X46 |
|
18 |
J73 |
|
19 |
J19 (A–T) |
|
20 |
G73 |
|
21 |
X7 |
|
22 |
J19 (P–A) |
|
23 |
G3 |
|
24 |
Q48 |
Version "G48", "G96", "G110", "W110" and "W230"
|
Characteristic curve |
Symbol |
|
1 |
A, B |
|
2 |
J, L, U, Q, W |
|
3 |
V |
|
4 |
D, C, Y |
|
5 |
C46/OF, D46/OF |
|
6 |
E |
|
7 |
A/O |
|
8 |
F, P, T |
|
9 |
R 2) |
|
10 |
G |
|
11 |
H |
|
12 |
M, D/O, C/O |
|
13 |
E1 1) |
| 1) | P – A/B pre-opening |
| 2) | Return flow from actuator to tank |
|
Characteristic curve |
Symbol |
|
14 |
B9 |
|
15 |
J32 (B–T) |
|
16 |
J19 (B–T) |
|
17 |
D19 |
|
18 |
J19 (A–T) |
|
19 |
X7 |
|
20 |
G73 |
|
21 |
J 32 (A–T) |
2 spool positions
| 1) | For valves with AC solenoids and detent, only C46/OF and D46/OF are admissible. |
3 spool positions
| 1) | For valves with AC solenoids and detent, only C46/OF and D46/OF are admissible. |
| 2) | Example: Symbol E with switching position "a" ordering code ..EA.. |
| 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.
The type-examination tested valve solenoid of the valve is equipped with a terminal box and a type-tested cable gland.
The connection is polarity-independent.
Solenoids for connection to AC voltage are equipped with an integrated rectifier.
Notice:
When establishing the electrical connection, the protective grounding conductor (PE) has to be connected properly.
Properties of the connection terminals and mounting elements
|
Position |
Function |
Connectable line cross-section |
|
1 |
Operating voltage connection |
Single-wire 0.75 … 2.5 mm2 |
|
Finely stranded,0.75 … 1.5 mm2 |
||
|
2 |
Connection for protective earthing conductor |
Single-wire 2.5 mm2 max. |
|
Finely stranded, 1.5 mm2 max. |
||
|
3 |
Connection for potential equalization conductor |
Single-wired, 4 … 6 mm2 |
|
Finely stranded, 4 mm2 |
Cable gland
|
Type approval |
II 2G Ex e IIC Gb | |
|
Threaded connection |
M20 x 1.5 | |
|
Type of protection according to EN 60529 |
IP66 (with correctly installed electrical connection) | |
|
Line diameter |
mm |
7 ... 10,5 |
|
Sealing |
Outer sheath sealing | |
Connection line
|
Line type |
Non-armored cables and lines (outer sheath sealing) | |
|
Temperature range |
°C |
-30 … +110 |
|
Direct voltage, polarity-independent |
AC voltage |
|
|
Over-current fuse and switch-off voltage peak
|
Voltage data in the valve type code |
Nominal voltage valve solenoid |
Rated current valve solenoid |
Rated current for external miniature fuse: Medium time-lag (M) according to DIN 41571 and EN/IEC 60127 |
Rated voltage of external miniature fuse: Medium time-lag (M) according to DIN 41571 and EN/IEC 60127 |
Maximum voltage value when switching off |
Interference protection circuit |
|
G24 |
24 V DC |
0,708 A DC |
800 mA |
250 V |
–90 V |
Suppressor diode bi-directional |
|
G48 |
48 V DC |
0,354 A DC |
400 mA |
250 V |
–200 V |
|
|
G96 |
96 V DC |
0,177 A DC |
200 mA |
250 V |
–370 V |
|
|
G110 |
110 V DC |
0,155 A DC |
200 mA |
250 V |
–390 V |
|
|
W110R |
110 V AC |
0,163 A AC |
200 mA |
250 V |
–3 V |
Bridge rectifier and suppressor diode |
|
W230R |
230 V AC |
0,078 A AC |
80 mA |
250 V |
–3 V |
Notice:
Corresponding to the rated current, a fuse according to DIN 41571 and EN / IEC 60127 has to be connected upstream of every valve solenoid (max. 3 x /rated).
The shut-off threshold of the fuse has to match the prospective short-circuit current of the supply source.
The prospective short-circuit current of the supply source may amount to a maximum of 1500 A.
This fuse may only be installed outside the potentially explosive area or must be of an explosion-proof design.
When inductivities are switched off, voltage peaks result which may cause faults in the connected control electronics. For this reason, the valve solenoids comprise an interference protection circuit which dampens this voltage peak to the voltage value shown in the table.
Dimensions in mm
|
|
|
Required surface quality of the valve contact surface |
|
1 |
Name plate |
|
2 |
Same seal rings for ports A, B, P, T |
|
3 |
Plug screw for valves with one solenoid |
|
4 |
Mounting nut with hexagon SW 32, tightening torque MA = 4+1 Nm |
|
5 |
Porting pattern according to ISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St, material no. R900005694, separate order) |
|
6 |
Space required to remove the solenoid coil |
Valve mounting screws (separate order)
For reasons of stability, exclusively use the following valve mounting screws:
4 hexagon socket head cap screws ISO 4762 - M5 x 50 - 10.9-flZn-240h-L
(friction coefficient μtotal = 0,09 … 0,14);
tightening torque MA = 7 Nm ±10 %,
material no. R913000064
Installation conditions
(dimensions in mm)
Installation conditions (dimensions in mm)
|
Single assembly |
Bank assembly |
|
|
Subplate dimensions |
Minimum dimensions: |
Minimum cross-section: |
|
Thermal conductivity of the subplate (EN-GJS-500-7) |
≥ 38 W/mK |
|
|
Minimum distance between the longitudinal valve axes |
≥ 55 |
|
Dimensions in mm
Notice:
Observe the “Special conditions for safe use” (see Information on explosion protection)
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