Proportional Directional Valve 4WRLD27W8-430LJ-4X/MXY/24ND6T - Bosch Rexroth R901547557

A closed loop cylinder axis stands or falls on where the position control is computed. In this size 27 proportional directional valve it is computed on board: the integrated digital axis controller accepts an analogue ±10 V command value and follows it with the W8 spool up to 600 l/min nominal flow.

Benefits

• Digital axis controller integrated - the control loop runs in the valve, the machine controller only supplies the command value.
• Analogue ±10 V command value on the 12-pole connector (11 + PE) to EN 175201-804, matching existing analogue equipment.
• W8 spool symbol defines the characteristic curve unambiguously, which keeps a replacement of an older unit traceable.
• 600 l/min nominal flow and up to 1850 l/min maximum flow at 270 bar operating pressure.
• External pilot oil supply and external return separate the pilot circuit from the main circuit.
• Subplate mounting to ISO 4401-08-08-0-05, 20.78 kg, NBR seals for HL hydraulic fluid.

Application

The variant is used on axes of presses, rolling mills and testing machines whose controller only supplies an analogue command value and leaves the control work to the valve. The 12-pole connector carries the supply voltage and the status lines alongside the command value. Installation requires the standard size 27 mounting pattern.

Manufacturer

Bosch Rexroth, product family 4WRLD, material number R901547557. Quote this material number for any enquiry or repeat order, because one type code can cover several versions.