Proportional Directional Valve 4WRTE32W8-600L-4X/6EG24ETK31/F1M - Bosch Rexroth R901111511

Once a large cylinder needs up to 600 l/min and closed-loop positioning at the same time, the feedback built into the valve decides the result. The 4WRTE32W8-600L-4X/6EG24ETK31/F1M measures its own spool travel, compares it with the 4 to 20 mA command value and corrects itself, at pressures up to 350 bar across 4 ports in 3 positions.

Benefits

• Nominal flow of 600 l/min against a maximum flow of 1600 l/min leaves headroom for fast approach strokes.
• Internal spool position feedback keeps the 4 to 20 mA command value even while the load on the cylinder changes.
• Internal pilot oil supply plus internal pilot oil return save the piping of both pilot connections.
• On-board electronics run on 24 VDC through a 7-pole connector (6 + PE) to EN 175201-804, so no separate amplifier card is needed.
• Mounting pattern ISO 4401-10-09-0-05 at a weight of 36.98 kg fits every existing size 32 subplate.

Applications

Typical applications are hydraulic presses, forging plants and test rigs where a cylinder first travels fast and is then held on position. Rolling mills as well as injection moulding machines with large clamping units also run this valve in a closed control loop. The NBR seals match mineral oil of class HL.

Manufacturer

Bosch Rexroth, material number R901111511. The type code 4WRTE32W8-600L-4X/6EG24ETK31/F1M states size 32, spool symbol W8, a nominal flow of 600 l/min and component series 4X.