Proportional Directional Valve 4WRKE25E1-220L-3X/6EG24ETK31/F1D3M - Bosch Rexroth R901370645

A cylinder has to accelerate without a jolt at 220 l/min nominal flow and then stay exactly where the control puts it. The 4WRKE25E1-220L-3X does this as a pilot-operated size 25 proportional directional valve, and inductive position feedback of the main spool keeps the metering cross section on target even at 350 bar. Pilot oil is taken internally and returned internally to tank, so no extra control lines are needed.

Benefits

• 220 l/min nominal flow, flow rate up to 870 l/min
• Operating pressure up to 350 bar across four ports
• On-board electronics, 4...20 mA command value, a broken wire stays visible in the signal level
• Internal pilot oil supply and internal pilot oil return, no additional piping
• ISO 4401-08-08-0-05 interface for existing size 25 subplates
• 17.93 kg weight, NBR seals for HL hydraulic fluid

Applications

The valve suits presses, injection moulding machines and test rigs in which a drive runs under closed-loop control over the full stroke. Three switching positions cover extend, retract and centre. Wiring runs through a 7-pole connector (6 + PE) to EN 175201-804 at 24 V DC.

Manufacturer

Bosch Rexroth, material number R901370645. The type code 4WRKE25E1-220L-3X/6EG24ETK31/F1D3M defines size, spool symbol, pilot oil routing and command value type without ambiguity.