Proportional Directional Valve 4WRTE25E220L-4X/6EG24K31/A1V - Bosch Rexroth R978918792

Where a separate pilot circuit is available, the main valve can draw on it directly. The 4WRTE25E220L-4X/6EG24K31/A1V takes its pilot oil externally and returns it externally, while the main stage offers 220 l/min nominal flow and up to 870 l/min.

Benefits

• Nominal flow 220 l/min and max. flow 870 l/min in size 25
• Internal spool position feedback with a linear characteristic curve, command value ±10 V
• External pilot oil supply and external pilot oil return through X and Y
• Operating pressure up to 350 bar, mounting pattern ISO 4401-08-08-0-05 with four ports
• FKM seals for HL hydraulic fluid, spool symbol E with three switching positions
• On-board electronics at 24 VDC, connector 7-pole (6 + PE) according to EN 175201-804, 18 kg

Applications

Intended for presses, forging lines and test rigs where a large axis travels under position control and the pilot stage is fed from a separate circuit. The manifold has to provide X and Y channels. The FKM seals should be taken into account when the hydraulic fluid is chosen. The ±10 V voltage command suits controller cards with an analogue output.

Manufacturer

Bosch Rexroth, material number R978918792. The type code 4WRTE25E220L-4X states size 25, spool symbol E and 220 l/min nominal flow, while 6EG24K31 covers the 24 VDC supply and the connector version.