***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 4WE6C6X/EG24NXEZ2 (R901035957) is a high-performance directional control valve designed for managing the flow and direction of hydraulic fluid within a system. This model is solenoid-actuated with wet-pin DC or AC solenoids and features two spool positions, ensuring precise control over the start, stop, and direction of flow. The valve includes a robust housing, one or two solenoids, a control spool, and one or two return springs. In its default state without energization, the control spool is maintained in either a central or initial position by the return springs.
This Bosch Rexroth valve offers an optional manual override feature that allows operators to adjust the spool without solenoid activation. It is suitable for applications requiring explosion protection as it complies with EU Explosion Protection Directive standards for areas II G (IInbsp;G), with valve solenoid protection classified as Exnbsp;ebnbsp;mbnbsp;IICnbsp;Tnbsp;Gb according to EN standards.
With its porting pattern conforming to ISO standards and the ability to handle maximum operating pressures up to bar and maximum flow rates of l/min, this directional valve is engineered for reliability and performance. Users should note that due to design reasons, internal leakage may be present and can increase throughout the product's lifecycle. Additionally, pressure peaks in tank lines can cause unintended movements in valves with detent unless separate return lines are provided or a check valve is installed.
The 4WE6C6X/EG24NXEZ2 valve also requires a throttle insert when operating conditions produce flows during switching processes that exceed the valve's performance limit. With its comprehensive features tailored for safety in potentially explosive atmospheres and precise flow control capabilities, this Bosch Rexroth directional control valve is an essential component for sophisticated hydraulic systems demanding high safety standards and reliable operation.
$3,796.00 USD
More are expected on April 2, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as April 2, 2025 when ordered in
This product is eligible for factory repair.
4/3-, 4/2- or 3/2-way version For intended use in potentially explosive atmospher
- Area of application in accordance with the Explosion Protection Directive 2014/34/EU: II 2G
- Type of protection of the valve solenoids: Ex eb mb IIC T4 Gb according to EN 60079-7 / EN 60079-18 Porting pattern according to ISO 4401-03-02-0-05 wet-pin DC or AC solenoids Electrical connection with individual connection and cable gland With manual override, optional
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.
01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
09 |
10 |
11 |
12 |
13 |
||
WE |
6 |
6X |
/ |
E |
XE |
Z2 |
/ |
01 |
3 main ports |
3 |
4 main ports |
4 |
|
02 |
Directional valve |
WE |
03 |
Size 6 |
6 |
04 |
Symbols; for the possible version, see "Symbols/Circuit diagrams" |
|
05 |
Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions) |
6X |
06 |
With spring return |
no code |
Without spring return |
O |
|
Without spring return with detent |
OF |
|
07 |
High-power solenoid, wet-pin |
E |
08 |
Direct voltage 24 V |
G24 |
Alternating voltage 230 V, 50/60 Hz |
W230R |
|
Further ordering codes for other voltages are provided under "Electrical connection" |
||
09 |
Without manual override |
no code |
With manual override |
N |
|
Explosion protection |
||
10 |
“Increased safety”, for details, please refer to the "information on explosion protection" |
XE |
Electrical connection |
||
11 |
Solenoid with terminal box and cable gland; for details please refer to "Electrical connection" |
Z2 |
12 |
Without throttle insert |
no code |
Throttle Ø 0,8 mm |
B08 |
|
Throttle Ø 1,0 mm |
B10 |
|
Throttle Ø 1.2 mm |
B12 |
|
Use if flow > performance limit of the valve |
||
Seal material |
||
13 |
NBR seals |
no code |
FKM seals |
V |
|
Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) |
Notice:
The manual override cannot be allocated a safety function and may only be used up to a tank pressure of 50 bar.
For applications outside these parameters, please consult us!
general
Size |
6 | ||
Weight |
Valve with one solenoid |
kg |
2.6 |
Valve with two solenoids |
kg |
4 | |
Installation position |
any | ||
Ambient temperature range 1) |
°C |
-20 … +70 | |
Storage temperature range |
°C |
+5 … +40 | |
Surface protection |
Galvanized |
1) | Observe the "Special application conditions for safe application" |
hydraulic
Size |
6 | ||
Maximum operating pressure |
Port P |
bar |
350 |
Port A |
bar |
350 | |
Port B |
bar |
350 | |
Port T 1) |
bar |
210 | |
Maximum flow |
l/min |
70 | |
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 |
-20 … +80 |
FKM seals |
°C |
-15 … +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 and 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 |
Data sheet |
|
Mineral oils |
HL, HLP, HLPD |
NBR, FKM |
DIN 51524 |
90220 |
|
Bio-degradable |
Insoluble in water |
HETG |
NBR, FKM |
ISO 15380 |
90221 |
HEES |
FKM |
||||
Soluble in water |
HEPG |
FKM |
ISO 15380 |
||
Flame-resistant |
Containing water |
HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR |
ISO 12922 |
90223 |
Important information on hydraulic fluids: For further information and data on the use of other hydraulic fluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). Ignition temperature >180 °C. 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 erosion Life cycle as compared to operation with mineral oil HL, HLP 50 … 100 % |
electrical
Voltage type |
Direct voltage | AC voltage 50/60 Hz | ||
Available voltages |
24 V / 48 V / 96 V / 110 V | 110 V / 230 V | ||
Voltage tolerance (nominal voltage) |
% |
± 10 | ||
Admissible residual ripple |
% |
< 5 | - | |
Duty cycle 1) |
% |
100 | ||
Switching time according to ISO 6403 2) |
ON |
ms |
30 … 55 | 40 … 80 |
OFF |
ms |
10 … 15 | 40 … 50 | |
Maximum switching frequency |
1/h |
15000 | 7200 | |
Nominal power with ambient temperature 20 °C |
W |
17 | ||
Maximum power with 1.1 x nominal voltage and an ambient temperature of 20 °C |
W |
20.6 | ||
Protection class according to DIN EN 60529 3) |
IP66 |
1) | Operating mode according to VDE 0580 |
2) | The switching times were determined at a hydraulic fluid temperature of 40 °C and 46 mm2/s. Deviating hydraulic fluid temperatures can result in different switching times. Switching times change dependent on operating time and application conditions. |
3) | With correctly installed electrical connection |
Information on explosion protection
Area of application according to directive 2014/34/EU |
II 2G | |
Type of protection valve |
c (EN 13463-5) | |
Maximum surface temperature 1) |
°C |
135 |
Temperature class |
T4 | |
Type of protection solenoid according to EN 60079-7/ EN 60079-18 |
Ex eb mb IIC T4 Gb | |
Type examination certificate solenoid |
KEMA 02ATEX2240 X | |
“IECEx Certificate of Conformity” for solenoid |
IECEx DEK 12.0068X |
1) | Surface temperature > 50 °C, provide contact protection. |
Special conditions for safe use
In case of valves with two solenoids, maximally one of the solenoids may be energized at a time. Simultaneously power supply to several valves in bank assembly is possible if the ambient temperature does not exceed 60 °C. In case of bank assembly, if only one of the solenoids is energized at a time, and during individual operation, the maximum ambient temperature may not exceed 70 °C. The maximum temperature of the surface of the valve jacket is 120 °C. This has to be considered when selecting the connection cable and/or contact of the connection cable with the surface of the jacket is to be prevented.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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