Proportional Directional Valve 4WRKE25E350L-3X/6EG24EK31/A1D3M - Bosch Rexroth R900731922

The larger the switched flow, the more back pressure in the tank channel affects the pilot stage. The 4WRKE25E350L-3X/6EG24EK31/A1D3M draws pilot oil internally but drains it separately, keeping 350 l/min nominal flow at 350 bar safely controllable.

Key benefits

• Internal pilot oil supply without a separate pump, external return against back pressure in the tank line.
• 350 l/min nominal flow, maximum flow 870 l/min, operating pressure up to 350 bar.
• Spool symbol E, 3 switching positions, 4 ports, connection pattern ISO 4401-08-08-0-05 in size 25.
• Plus minus 10 V command, 24 VDC supply, electronics carried on the valve.
• Internal spool position feedback, linear characteristic curve, 17.86 kg weight.
• NBR seals for HL hydraulic fluid, 7-pole connector (6 + PE).

Applications

A fit for main axes on plastics machinery and presses whose return line carries brief flow surges on opening. Draining pilot oil separately keeps spool position stable during that phase. Internal supply saves the second pump in the power unit.

Manufacturer

Bosch Rexroth, material number R900731922. The type code 4WRKE25E350L-3X/6EG24EK31/A1D3M states size 25, spool symbol E, 350 l/min nominal flow and series 3X.