Proportional Directional Valve 4WRDE25V350L-6X/MXYWG/24F1 - Bosch Rexroth R901565014

Large hydraulic axes on presses and rolling stands need a valve that meters 350 l/min nominal flow at 350 bar operating pressure without drifting. This pilot-operated proportional directional valve of the 4WRDE series in size 25 achieves that through internal piston position feedback, and it reads the command value as a 4 to 20 mA current signal that stays clean over long cable runs.

Key benefits

• Peak flow of 870 l/min, more than double the 350 l/min nominal rating, gives headroom for short rapid strokes.
• Operating pressure of 350 bar straight on an ISO 4401-08-08-0-05 subplate pattern, no adapter plate involved.
• A 4 to 20 mA current command instead of a voltage signal cuts shielding effort on long cable routes.
• On-board electronics close the position loop at the valve, so no separate amplifier card sits in the cabinet.
• Spool symbol V, 3 switching positions, 4 ports, suited to symmetrical cylinders.

Applications

Size 25 belongs on axes that move a lot of oil yet have to stop accurately: press cylinders, roll gap adjustment, test cylinders. NBR seals match HL mineral oil. At 17.5 kg the valve bolts onto a subplate, external pilot oil supply plus external pilot oil return are routed separately.

Manufacturer

Bosch Rexroth lists this valve as type 4WRDE25V350L-6X/MXYWG/24F1 under material number R901565014. Quote that material number on enquiries or repeat orders, because the short type code does identify the electronics variant only partly.