Servo Directional Valve 4WS2EM10-5X/75B11XHET210K31EV - Bosch Rexroth R901122812

Direct actuated servo valves position the spool without a pilot stage and react quickly to the command value. This size 10 version takes its pilot oil internally, so lines X and Y are not needed, and at 3.82 kg it passes 75 l/min nominal flow and up to 160 l/min.

Benefits

• Direct actuated with internal pilot oil supply and internal pilot oil return, which saves two control lines on the subplate
• 75 l/min nominal flow and 160 l/min maximum flow from size 10 at a weight of 3.82 kg
• Analog control with 30 mA/85 through external electronics, supply voltage 24 VDC
• CCC-Ex type examination certificate for plants with explosion protection requirements
• FKM seals and hydraulic fluid HL at an operating pressure of up to 350 bar
• Three switching positions on connection diagram ISO 4401-05-05-0-05, connector, 7-pole (6 + PE) to EN 175201-804

Applications

Servo valves of this design control position, force or speed in testing machines, simulators, forming presses and turbine governors, where response time decides the quality of the control loop.

Driving the valve from a separate amplifier card keeps the electronics away from a hot or vibrating position on the machine. The CCC-Ex certificate is a precondition for plants operated in a hazardous area in China. FKM seals tolerate higher oil temperatures than NBR.

Manufacturer

Bosch Rexroth lists the servo valve under material number R901122812. The type code 4WS2EM10-5X/75B11XHET210K31EV states the size, the nominal flow and the electronics version.