Proportional Directional Valve 4WRKE32E400L-3X=6EG24EK31/A1D3M - Bosch Rexroth R901538400

When a large cylinder takes the output of a complete power unit, the directional valve has to meter that same volume steplessly. The size 32 valve sits on the ISO 4401-10-09-0-05 hole pattern, carries 400 l/min nominal flow and up to 1550 l/min at a maximum operating pressure of 350 bar, with spool symbol E and a linear characteristic curve.

Benefits

• Linear characteristic curve between the ±10 V command value and flow, the relationship stays even across the spool stroke.
• 400 l/min nominal flow and 1550 l/min maximum flow at up to 350 bar operating pressure.
• Internal position transducer on the main spool, corrected by the on-board electronics inside the valve.
• ISO 4401-10-09-0-05 hole pattern of size 32, spool symbol E with 3 switching positions and 4 ports, 37.2 kg weight.
• Internal pilot oil supply with external pilot oil return through a dedicated Y line.
• NBR seals for hydraulic fluid HL, 24 V DC supply through a connector, 7-pole (6 + PE) according to EN 175201-804.

Applications

Size 32 is used in presses, forging hammers, rolling mills and test rigs with large cylinder areas whose motion is under closed-loop control. Internal spool position feedback holds the opening even through load changes, and the linear characteristic curve keeps the behaviour predictable for the superimposed controller. A Y line has to be provided for the external pilot oil return, while pilot oil is taken internally from the main circuit. At 37.2 kg a lifting aid is advisable when fitting or removing the valve.

Manufacturer

Bosch Rexroth lists the valve under material number R901538400 in the 4WRKE product family.