Bosch Rexroth | M-3SEW6U3X630MG96N9K4B18
M-3SEW6U3X/630MG96N9K4/B18
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The M-3SEW6U3X/630MG96N9K4/B18 directional seat valve belongs to the M-SEW Poppet Valves series and is manufactured by Bosch Rexroth for on-off control in hydraulic automation circuits. It performs a 3/2 directional seat function in line with symbol U, allowing one pressure port to be alternately connected to a service port or blocked. The subplate interface follows ISO 4401-03-02-0-05, so it fits standard NG06 manifolds. A 96 V DC coil with a ±10 percent voltage tolerance ensures stable shifting when supply levels fluctuate. Continuous service is possible because the coil is rated for a 100 percent duty cycle while drawing 30 W. The electrical plug uses the DIN EN 175301-803 K4 form and, when mated, keeps the assembly within the IP65 protection class. During prolonged energization the coil surface can reach 120 °C (248 °F), so adjacent wiring must withstand elevated temperatures.
The hydraulic stage withstands a maximum operating pressure of 630 bar (9150 psi), enabling use in high-pressure power units. Its tank port accepts up to 100 bar (1450 psi) back pressure, which supports circuits with restricted return lines. A nominal flow rate of 25 l/min (6.6 gpm) is moderated by a 1.8 mm throttle insert that limits shift speed and reduces hydraulic shock. NBR seals are fitted to maintain compatibility with common mineral oils and to contain leakage at full pressure. Mounting requires four M6 × 45 screws tightened to 15.5 Nm to secure the valve against the manifold. The complete unit weighs 1.5 kg (3.3 lb), allowing a single technician to handle installation and service.
Technical Specifications
Coil Surface Temperature
120 °C (248 °F)
Coil Voltage
96 V DC
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803 (K4)
Max Flow
25 l/min (6.6 gpm)
Max Operating Pressure
630 bar (9150 psi)
Max Tank Port Pressure
100 bar (1450 psi)
Mounting Screw Torque
15.5 Nm (M6 x 45)
Porting Pattern
ISO 4401-03-02-0-05
Power Consumption
30 W
Protection Class
IP65 (With Connector)
Seal Material
NBR
Throttle Insert
1.8 mm
Valve Function
3/2 Directional Seat (Symbol U)
Voltage Tolerance
±10%
Weight
1.5 kg (3.3 lb)
1620 Old Apex Road
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