Proportional Directional Valve 4WRZE10W8-50-7X/6EG24N9TK31/F1V - Bosch Rexroth R900723478

On a deck crane the load pulls on the rope one moment and pushes back the next. The 4WRZE10W8-50-7X/6EG24N9TK31/F1V keeps flow at its 50 l/min rated value through that change, at 315 bar maximum, with a blocked centre that holds the hook.

Benefits

• Spool symbol W8 blocks at centre and holds the load without actuation.
• 50 l/min rated flow, flow up to 170 l/min, operating limit 315 bar.
• External pilot oil supply with internal pilot oil return, without a pressure reducing valve.
• Current command value 4...20 mA, insensitive to long cable runs on board.
• Concealed manual override, 7.98 kg, size 10, FKM seals for HL fluid.

Application

Hoists, luffing cylinders and extension axes on shipboard and harbour cranes are the place of use. External pilot supply allows a separate, finely filtered pilot circuit, which helps with long maintenance intervals. Smaller auxiliary axes run at 25 l/min.

Manufacturer

Bosch Rexroth, material number R900723478. Characteristic curves, installation dimensions and the port pattern are given in data sheet RE 29115 and in data sheet RE 07600-B.