The directional valve type WE is a solenoid-actuated directional spool valve. It controls the start, stop and direction of a flow.
The directional valve basically consists of housing (1), one or two electronic solenoids (2), control spool (3), and the return springs (4). When de-energized, the control spool (3) is held in the central position or in the initial position by the return springs (4) (except for version "O"). The control spool (3) is actuated by wet-pin electronic solenoids (2).
The force of electronic 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 to A and B to T or P to B and A to T.
When the electronic solenoid (2) is switched off, the return spring (4) pushes the control spool (3) back to its rest position.
A manual override (6) allows for the manual switching of the valve without solenoid energization.
To ensure proper functioning, make sure that the pressure chamber of the solenoid is filled with oil.
Type .WE 10 E…
Throttle insert "B.."
Using a throttle insert (7) in channels P, A, B or T, the flow resistance at the valve can be increased. Its use is required when, due to prevailing operating conditions, flows occur during the switching processes, which exceed the performance limit of the valve.
Without spring return “O” (only possible with symbols A, C and D)
This version is a directional valve with 2 spool positions and 2 electronic solenoids without detent.
The valve without spring return at the control spool (3) does not have a defined basic position in the de-energized condition.
Without spring return with detent “OF” (only possible with symbols A, C and D)
This version is a directional valve with 2 spool positions and 2 electronic solenoids with detent.
The detents are used to lock the control spool (3) in the relevant spool position. During operation,
continuous application of current to the electronic solenoid can thus be omitted which contributes to energy-efficient operation.
Notice!
Pressure peaks in the tank line to two or several valves can result in unintended
movements of the control spool if valves are equipped with a detent! We therefore recommend providing separate return lines or
installing a check valve in the tank line.
Type .WE 10 ../OF…
Inductive position switch type QM: electrical connection
general
| Type | Einzelanschluss | Zentralanschluss | ||
| Weight | Valve with one solenoid | kg | 3.6 | 3.5 |
| Valve with two solenoids | kg | 4.4 | 4.3 | |
| Installation position | any | |||
| Ambient temperature range | NBR seals | °C | -30…+50 | |
| FKM seals | °C | -20…+50 | ||
| MTTFD values according to ENISO138491) | Years | 150 | ||
| 1) | For further details, see data sheet 08012 |
hydraulic
| Size | 10 | ||
| Maximum operating pressure | PortP | bar | 315 |
| PortA | bar | 315 | |
| PortB | bar | 315 | |
| Port T1) | bar | 160 | |
| Maximum flow | l/min | 120 | |
| Flow cross-section | SymbolQ (A/B→T) | mm² | 5.5 |
| SymbolV (A/B→T) | mm² | 11 | |
| SymbolV (P→A/B) | mm² | 10.3 | |
| SymbolW (A/B→T) | mm² | 2.5 | |
| Hydraulic fluid | see table | ||
| Hydraulic fluid temperature range2) | 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 fluid3) | Class 20/18/15 according to ISO4406(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) | at the valve working ports of the valve |
| 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 oils | HL, HLP, HLPD, HVLP, HVLPD | NBR, FKM | DIN51524 | |
| Bio-degradable | Insoluble in water | HETG | NBR, FKM | VDMA24568 |
| HEES | FKM | |||
| Soluble in water | HEPG | FKM | VDMA24568 | |
| Containing water | Water-free | HFDU, HFDR | FKM | ISO12922 |
| Containing water | HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620 ) | NBR, HNBR | ISO12922 | |
| 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 40K higher than the maximum solenoid surface temperature. Flame-resistant – containing water: Maximum pressure differential per control edge 50bar. 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% Bio-degradable: When using bio-degradable hydraulic fluids that are zinc-solving, zinc may accumulate in the fluid (700mgzinc per pole tube) | ||||
electrical
| Voltage type | AC voltage 50/60Hz | ||
| Available voltages1) | 42 / 110 / 230 | ||
| Voltage tolerance (nominal voltage) | % | ±10 | |
| Holding power | VA | 90 | |
| Switch-on power | VA | 550 | |
| Duty cycle | % | 100 | |
| Switching time according to ISO6403 | ON | ms | 15…25 |
| OFF | ms | 20…60 | |
| Maximum switching frequency | 1/h | 7200 | |
| Protection class according to DINEN60529 | IP65 (with mating connector mounted and locked) | ||
| Insulation class VDE0580 | H | ||
| Electrical fuse protection | Every solenoid must be protected individually using a suitable fuse with tripping characteristics K (inductive loads). | ||
| Behavior in error cases | Solenoid does not switch through: The solenoid surface temperature may be exceeded. | ||
| 1) | Special voltage upon request; mains for AC solenoids, see notice and ordering code. |
electrical
| Connection voltage (DC voltage) | 24V | |||
| 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 | |
M12x1 plug-in connection
The electric connection is realized via a 4-pole mating connector (separate order) with connection thread M12x1.
electrical
| M12x1 plug-in connections1) | K72L, DK24L, DK35L | ||
| Available voltages2) | V | 24 | |
| Limited switch-off voltage peak | K72L, DK35L | V | -44…-55 |
| DK24L | without limitation | ||
| Voltage tolerance (nominal voltage) | % | ±10 | |
| Power consumption | W | 35 | |
| Duty cycle | % | 100 | |
| Switching time according to ISO6403 | ON | ms | 45…60 |
| Smoothly switching ON | 3 to 4 times longer than standard | ||
| OFF | ms | 20…30 | |
| Smoothly switching OFF | 3 to 4 times longer than standard | ||
| Maximum switching frequency | Standard | 1/h | 15000 |
| Smoothly switching | 1/h | 7200 | |
| Protection class according to DINEN605293) | IP65 | ||
| Protection class according to DINEN61140 | III | ||
| Maximum coil temperature4) | °C | 150 | |
| 1) | Mating connectors according to IEC60947-5-2, separate order, see data sheet08006 |
| 2) | Connection to functional low voltage with secure separation only=PELV/SELV |
| 3) | Only with the use of the mating connectors indicated by us and with correct installation. |
| 4) | Due to the surface temperatures of the solenoid coils, the standards ISO13732-1 and EN982 need to be adhered to! |
Notice!
Valve versions with electrical individual connection “K…” or central connection “DK…”, see Ordering code.
Notices!
The solenoid coils must not be painted. Actuation of the manual override is only possible up to a tank pressure of approx. 50bar. Avoid damage to the bore of the manual override!
(Special tool for actuation, separate order, material no. R900024943). When the manual override is blocked, actuation of the opposite solenoid must be ruled out!
The simultaneous actuation of 2 solenoids of one valve must be ruled out! Use cables that are approved for a working temperature above 105°C. When solenoid coils are switched off, voltage peaks result which may cause faults or damage in the connected control electronics. The user has to provide for a suitable circuit for limiting the voltage peaks. It must be noted that a diode switched in an antiparallel form extends the switching off time. Valves with individual connection and a supply voltage of 12V or 24V can be operated with twice the voltage to reduce the switching time. For this purpose, the voltage has to be reduced to the nominal valve voltage after 100ms by means of pulse width modulation. The maximum admissible switching frequency is 5 1/s. Due to possible overload of the board, valves with central connection must not be operated with twice the voltage.
Notice!
AC solenoids can be used for 2 or 3 mains; e.g. solenoid type W110 for: 110V, 50Hz; 110 V, 60Hz; 120V, 60Hz
In the electrical connection, the protective earthing conductor (PE, grounded) is to be connected in accordance with the stipulations.
For applications outside these parameters, please consult us!
(measured with HLP46, ϑOil=40±5°C)
Δp-qV characteristic curves
| Symbol | Direction of flow | |||
| P-A | P-B | A-T | B-T | |
| A; B | 3 | 3 | - | - |
| C | 3 | 3 | 4 | 5 |
| D; Y | 5 | 5 | 6 | 6 |
| E | 1 | 1 | 4 | 4 |
| F | 2 | 3 | 7 | 4 |
| G | 3 | 3 | 6 | 7 |
| H | 1 | 1 | 6 | 7 |
| J | 1 | 1 | 3 | 3 |
| L | 2 | 2 | 3 | 5 |
| M | 1 | 1 | 4 | 5 |
| P | 4 | 2 | 5 | 7 |
| Q | 1 | 2 | 1 | 3 |
| R | 3 | 6 | 4 | - |
| T | 3 | 3 | 6 | 7 |
| U; V | 2 | 2 | 3 | 3 |
| W | 2 | 2 | 4 | 5 |
| Central position: | |||||
| Symbol | Direction of flow | ||||
| P-A | P-B | B-T | A-T | P-T | |
| F | 4 | - | - | 9 | 9 |
| P | - | 5 | 8 | - | 10 |
| G, T | - | - | - | - | 9 |
| H | - | - | - | - | 3 |
| Switching position: | ||||
| Symbol | Direction of flow | |||
| P - A | B - A | A - T | P - T | |
| R | - | 9 | - | - |
Notice!
The specified performance 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 performance limit 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!
The performance limit was determined when the solenoids were at operating temperature, at 10% undervoltage and without tank preloading.
Performance limits
(measured with HLP46, ϑOil=40±5°C)
| Characteristic curve | Symbol |
| 1 | C; C/O; C/OF; D; D/O; D/OF; Y |
| 2 | E; L; U; Q; W |
| 3 | A/O; A/OF; J |
| 4 | F; P |
| 5 | T |
| 6 | H |
| 7 | R |
| 8 2) | L; U |
42V, 50Hz; 110V, 50Hz; 120V, 60Hz;
127V, 50Hz; 220V, 50Hz; 240V, 60Hz
| Characteristic curve | Symbol |
| 9 | M |
| 10 | A, B |
| 11 | G |
| 12 | V |
42V, 50Hz; 110V, 50Hz; 120V, 60Hz;
127V, 50Hz; 220V, 50Hz; 240V, 60Hz
Notice!
The specified performance 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 performance limit 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!
The performance limit was determined when the solenoids were at operating temperature, at 10% undervoltage and without tank preloading.
Performance limits
(measured with HLP46, ϑOil=40±5°C)
Performance limits (measured with HLP46, ϑOil=40±5°C)
| Characteristic curve | Symbol |
| 13 | C; C/O; C/OF;D; D/O; D/OF; Y |
| 14 | A/O; A/OF |
| 15 | E |
| 16 | M |
| 17 | V |
| 18 | H |
42V, 60Hz; 110V, 60Hz;
127V, 60Hz; 220V, 60Hz
Please consult us regarding the performance limits for other symbols.
| 1) | Example: Symbol E with spool position "a" ordering code ..EA.. |
Notices!
Representation according to DINISO1219-1.
Hydraulic interim positions are shown by dashes.
Inductive position switch type QM Switching logics
Version QMA
(Position switch on side B, monitored spool position "a")
Version QMA
(Position switch on side A, monitored spool position "a")
Version QMB
(Position switch on side B, monitored spool position "b")
Version QMB
(Position switch on side A, monitored spool position "b")
Version QM0
(Position switch on side B, monitored rest position)
Version QM0
(Position switch on side A, monitored rest position)
Individual connection
Dimensions in mm
Dimensions in mm
Notice!
Deviating from ISO4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. The dimensions are nominal dimensions which are subject to tolerances.
Central connection
Dimensions in mm
Dimensions in mm
| 4 | Cover |
| 7 | Cable gland Pg 16 [1/2“ NPT] "DL" |
| 8 | Angled socket (color red, separate order) material no. R900005538) |
| 12 | Space required to remove the mating connector/angled socket |
Terminal assignment with central connection:
1 solenoid:
Always connect the solenoid to terminals 1 and 2,
the protective earthing conductor to terminal PE, grounded
2 solenoids:
Always connect solenoid "a" to terminals 1 and 2,
solenoid "b" to terminals 3 and 4,
the protective earthing conductor to terminal PE, grounded
Notice!
Deviating from ISO4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. The dimensions are nominal dimensions which are subject to tolerances.
Subplates according to data sheet 45054 (separate order)
G 66/01 (G3/8)
G 67/01 (G1/2)
G 534/01 (G3/4)
G 66/12 (SAE-6; 9/16-18)1)
G 67/12 (SAE-8; 3/4-16)1)
G 534/12 (SAE-12; 1-1/16-12)1)
1) Upon request
Valve mounting screws (separate order)
4 hexagon socket head cap screws, metric
ISO 4762 - M6x40 - 10.9-flZn-240h-L
(friction coefficient µtotal=0.09 … 0.14);
tightening torque MA=12.5Nm±10%,
material no. R913000058
or
4 hexagon socket head cap screws
ISO4762 - M6x40 - 10.9 (self procurement)
(friction coefficient µtotal=0.12 … 0.17);
tightening torque MA=15.5Nm±10%
4 hexagon socket head cap screws UNC
1/4-20 UNC x 1-1/2” ASTM-A574
(friction coefficient µtotal=0.19 … 0.24);
tightening torque MA=20Nm ±15%,
(friction coefficient µtotal=0.12 … 0.17);
tightening torque MA=14Nm ±10%,
material no. R978800710
With different friction coefficients, the tightening torques are to be adjusted accordingly!
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.
M12x1 plug-in connection‒Individual connection
Type .WE 10 .3X/.CG24.K72L…
Dimensions in mm
Dimensions in mm
M12x1 plug-in connection‒Central connection
Type .WE 10 .4X/.CG24.DK…
Dimensions in mm
Dimensions in mm
| 12 | Space required to remove the mating connector |
| 20 | M12x1 plug-in connection with status LED (mating connectors according to IEC60947-5-2, separate order, see data sheet08006); electrical connections “DK35L” and “DK24L” see Electrical connections |
| 12 | Space required to remove the mating connector |
| 20 | M12x1 plug-in connection with status LED (mating connector according to IEC60947-5-2, separate order, see data sheet08006); electrical connections “K72L”: see Electrical connections |
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
For valves with connector “K4” according to EN175301-803 and ISO4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)
Data sheet
Spare parts & repair
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z45
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z45
For valves with connector “K4” according to EN175301-803 and ISO4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)
Data sheet
Spare parts & repair
Mating connectors for valves with connector “K4”, with indicator light
3P Z5L
Mating connectors for valves with connector “K4”, with indicator light
3P Z5L
For valves with connector “K4” according to EN175301-803 and ISO4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)
Data sheet
Spare parts & repair
Mating connectors for valves with connector “K4”, with indicator light
3P Z55L
Mating connectors for valves with connector “K4”, with indicator light
3P Z55L
For valves with connector “K4” according to EN175301-803 and ISO4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)
Data sheet
Spare parts & repair
Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit
3P Z5L1
Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit
3P Z5L1
For valves with connector “K4” according to EN175301-803 and ISO4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)
Data sheet
Spare parts & repair
