Proportional Directional Valve 4WRZE25E1-220-7X/6EG24N9EK31/A1D3M - Bosch Rexroth R900973678

A peeling lathe pushes the knife forward in small, constant steps while the log rotates. The 4WRZE25E1-220-7X/6EG24N9EK31/A1D3M meters 220 l/min nominal flow for that, feeds its pilot stage internally and drains it to the outside.

Benefits

• Internal pilot supply saves a line, the external return keeps pilot pressure clean.
• A ±10 V command value allows fine feed steps straight from the axis controller.
• Nominal flow 220 l/min at 350 bar operating pressure in size 25.
• Spool symbol E1, 3 switching positions, ISO 4401-08-08-0-05, 4 ports.
• Weight 20.44 kg, the lowest of this 4WRZE25 selection, NBR seals, UKCA to SI2016/1091.

Applications

The valve guides knife carriages, pressure rolls and clamping heads in woodworking. It equally suits feed axes in sawmills and veneer presses. The external pilot return keeps control free of back pressure in the shared tank line.

Manufacturer

Bosch Rexroth, material number R900973678. Datasheet RE 29115 gives characteristic curves and installation notes, RE 07600-B the position within the range.