Proportional Directional Valve 4WRLD27E600LJ-4X/MXY/24ND6T - Bosch Rexroth R901529312

A separate pilot circuit keeps pilot pressure constant even when working pressure in the main circuit collapses. This size 27 version takes pilot oil from an external supply and returns it externally to tank, while the integrated digital axis controller handles 600 l/min nominal flow at 270 bar.

Benefits

• External supply and external return - the pilot circuit works independently of the pressure profile in the main circuit.
• 600 l/min nominal flow and up to 1850 l/min maximum flow at 270 bar operating pressure.
• E spool symbol with internal spool position feedback on the main stage.
• Digital axis controller in the valve, analogue ±10 V command value on the 12-pole connector (11 + PE), valve weight 21 kg.

Application

Fully external pilot routing is chosen when the working pressure varies strongly or drops close to zero during part of the cycle, as on presses with a long holding phase and a short working phase. The pilot stage stays supplied and the axis responds unchanged. Pilot lines X and Y have to be provided in addition to the main ports.

Manufacturer

Bosch Rexroth, product family 4WRLD, material number R901529312. Quote this material number for any enquiry or repeat order, because one type code can cover several versions.