Bosch Rexroth | M-4SEW6Y3X420MG125N9K4B18V
M-4SEW6Y3X/420MG125N9K4/B18V
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The M-4SEW6Y3X/420MG125N9K4/B18V poppet valve belongs to the M-SEW Poppet Valves series and is produced by Bosch Rexroth for directional control in hydraulic automation systems. It withstands operating pressures up to 420 bar and permits a maximum flow of 25 l/min. Installation is on a subplate that follows the ISO 4401-03-02-0-05 pattern, allowing easy exchange within size 03 manifolds. Actuation comes from a high-power air-gap solenoid that runs on direct voltage, draws 30 W, and can remain energized continuously because the duty cycle is 100 percent. These core characteristics support compact, leak-tight switching where constant on-time is required.
Connection is made through a DIN EN 175301-803 form K4 plug, and the housing meets IP65 for protection against dust and water jets. The coil surface may reach 120 °C during service, yet a switching rate of 3600 cycles per hour is still allowed. Tank port pressure is limited to 100 bar, and the unit is intended for circuits using mineral oil as the hydraulic fluid. All dynamic seals are made from FKM to handle elevated temperature and fluid additives. A 1.8 mm throttle orifice controls inrush flow, and a concealed manual override, designated N9, lets maintenance staff shift the poppet when electrical power is absent.
Technical Specifications
Duty Cycle
100 %
Electrical Connector
DIN EN 175301-803 (K4)
Hydraulic Fluid
Mineral Oil (M)
Manual Override
Concealed (N9)
Max Coil Surface Temperature
120 °C
Max Operating Pressure
420 bar
Max Switching Frequency
3600 1/h
Max Tank Port Pressure
100 bar
Maximum Flow
25 l/min
Porting Pattern
ISO 4401-03-02-0-05
Power Consumption
30 W
Protection Class
IP65
Seal Material
FKM (V)
Solenoid Type
High-Power Air-Gap (M)
Throttle Orifice
1.8 mm (B18)
Voltage Type
Direct Voltage
1620 Old Apex Road
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