Directional Spool Valve 4WEH16HD7X/OF6EG220N9EK4QMABG24/B10 - Bosch Rexroth R901123029

Two things set this build apart from the other 4WEH16 units: the 220 VDC solenoid voltage and the external pilot drain. Together they suit plants whose return line carries back pressure and whose controls run on high direct voltage.

Benefits

• 220 VDC supply voltage through a 3-pole (2 + PE) plug to EN 175301-803.
• Pilot oil supplied internally, drained externally, the pilot return stays separate from the main return.
• 300 l/min flow at 280 bar maximum operating pressure in size 16.
• Spool symbol D, two switching positions, four ports on the ISO 4401-07-07-0-05 pattern.
• 10.32 kg weight, NBR seals for HL hydraulic fluid, UKCA conformity to SI2016/1091.

Applications

The usual location is a manifold on forming machinery with a shared return header. Because the pilot drain is routed separately, switching times stay the same even when other consumers build up pressure in the return. When replacing a unit, check the pilot oil variant as well as the voltage.

Manufacturer

Bosch Rexroth, material number R901123029. Data on switching times, performance limit and pilot pressure are given in data sheet RE 24751.