Proportional Directional Valve 4WRZE16E180-7X/6EG24N9K31/F1V - Bosch Rexroth R901481278

Pilot oil supply and pilot oil return run outside the valve, which keeps the pilot circuit independent of the working pressure of the axis. The size 16 valve processes a 4...20 mA current command value and releases 180 l/min nominal flow at up to 350 bar operating pressure.

Benefits

• Nominal flow 180 l/min, maximum flow 460 l/min at 350 bar operating pressure.
• 4...20 mA command value, the current signal stays stable over long cable runs, 24 VDC supply.
• External pilot oil supply and external pilot oil return, so the pilot pressure can be set independently.
• Version without pressure reducing valve, intended for a pilot circuit that is already set to the right level.
• Spool symbol E with 3 switching positions and 4 ports, concealed auxiliary actuation on the pilot solenoid.
• FKM seals for HL hydraulic fluid, weight 12.56 kg, subplate mounting to ISO 4401-07-07-0-05.

Technical data

Applications

The valve is meant for axes on presses, plastics machinery and test rigs whose pilot stage is fed from a separate circuit. FKM seals cope with oil temperatures that push NBR to its limit, for example close to mould heating. The concealed auxiliary actuation allows the spool to be checked while the electrics are switched off.

Manufacturer

Bosch Rexroth lists this valve under material number R901481278, type code 4WRZE16E180-7X/6EG24N9K31/F1V. Characteristic curves, performance limits and installation dimensions are given in data sheet RE 29115, the series overview in RE 07600-B.