Proportional Directional Valve 4WRPDH6C4B24L-2X/M/24ED6T - Bosch Rexroth R901474443

A machine tool axis that has to position out of full speed needs a valve that ramps the oil flow instead of switching it. The 4WRPDH6C4B24L-2X/M/24ED6T does this at 24 l/min rated flow and up to 350 bar, reporting its spool position back to the on-board electronics, which corrects deviations at once.

Benefits

• Internal spool position feedback, the on-board electronics close the loop without an external amplifier.
• 24 l/min rated flow at 350 bar operating pressure, four switching positions with spool symbol C4.
• Direct operated spool in size 6, subplate mounting to ISO 4401-03-02-0-05 with four ports.
• Command value either 10 VDC bipolar or 4 ... 20 mA, 24 VDC supply on the 12-pole plug (11 + PE).
• 3.58 kg valve mass, NBR seals for HL fluid, UKCA marked to SI2016/1091.

Application

Feed and infeed axes on machine tools are the usual place, where the cylinder travels fast and then holds under closed loop control. The valve sits straight on the manifold at the cylinder, which keeps the oil column between metering edge and piston short. Larger flow rates are covered by adding a pilot operated stage to size 6.

Manufacturer

Bosch Rexroth, material number R901474443.