Proportional Directional Valve 4WRTE27W6-500L-4X/6EG24ETK31/A1M - Bosch Rexroth R978918550

When a sheet metal press has to vary speed over the stroke, the valve must meter flow under position control. The 4WRTE27W6-500L-4X/6EG24ETK31/A1M handles this with 500 l/min nominal flow in size 27, spool symbol W6 and internal pilot oil supply with internal return.

Benefits

• Nominal flow of 500 l/min, maximum 1000 l/min, moves large cylinders without a second valve.
• Internal pilot oil supply and internal return save the separate control oil line.
• Command value ±10 V with on-board electronics and internal spool position feedback.
• Connection diagram ISO 4401-08-07-0-05 in size 27 fits the existing manifold.
• Operating pressure up to 270 bar, 4 ports, 3 switching positions, NBR seals.
• Supply 24 V DC through a 7-pole connector (6 + PE) according to EN 175201-804, weight 19.5 kg.

Technical data

Applications

The valve drives press cylinders, lifting gear and fast feed axes in the range of several hundred litres per minute. Spool symbol W6 gives the centre position its defined behaviour, while position feedback keeps repeatability across the cycle. Thanks to internal oil routing, connection to P and T of the main circuit is enough.

Manufacturer

Bosch Rexroth, material number R978918550. The type code 4WRTE27W6-500L-4X/6EG24ETK31/A1M states the 4WRTE series, size 27, spool symbol W6 and 500 l/min nominal flow.