Proportional Directional Valve 4WRZ10E85-7X/6EG24N9TK4/M - Bosch Rexroth R978919859

4WRZ10E85-7X/6EG24N9TK4/M takes pilot oil externally and returns it internally, so the pilot pressure stays independent of conditions in the main gallery. Nominal flow is 85 l/min, maximum flow 170 l/min and the mass 7.72 kg.

Advantages

• 85 l/min nominal flow, up to 170 l/min maximum flow in size 10
• External pilot oil supply with internal pilot oil return, giving a pilot pressure of its own
• Symbol E with three switching positions and stepless metering in between
• Maximum operating pressure 315 bar, NBR seals, HL hydraulic fluid
• No integrated pressure reducing valve, pilot pressure is limited externally
• Concealed auxiliary actuation, 7.72 kg mass, 24 VDC supply

Technical data

Application

Pilot-operated proportional directional valve in size 10 to connection diagram ISO 4401-05-05-0-05. Control is handled by external amplifier electronics at 24 VDC and the power connector is a 7-pole (6 + PE) type to EN 175201-804. Typical duty is on feed axes and hoists where acceleration and braking ramps are meant to come from the controller.

Manufacturer

Bosch Rexroth, material number R978919859. All sizing data and characteristic curves are given in the data sheet Proportional directional valve, pilot-operated (RE 29115) and Hydraulic valves and hydro- (RE 07600-B).