Bosch Rexroth | 3WRCBH50VF750M-1XZM-127
3WRCBH50VF750M-1X/ZM-127
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The 3WRCBH50VF750M-1X/ZM-127 cartridge valve is produced by Bosch Rexroth for the 3WRCBH Cartridge Valves series and is applied in hydraulic automation to modulate high flow rates with proportional control. It is built in nominal size 50 and tolerates operating pressures up to 315 bar. The rated flow at a 5 bar pressure drop is 750 l/min, while the construction permits a maximum flow of 1600 l/min. An internal area ratio of 1:1.5 defines the relationship between the pilot and main stages for stable regulation. The pilot circuit moves the main element within 60 ms, and a pilot flow of 28 l/min feeds this control path. Maximum flow deviation is limited to 10%, sustaining predictable output across the operating range.
The valve weighs 14.7 kg and endures vibration levels up to 25 g. Control hysteresis is held to 0.1%, and temperature-related zero shift remains within 1% for consistent set points. Leakage from the main stage at 100 bar is 600 cm³/min, helping conserve fluid and pressure. The hydraulic medium must satisfy cleanliness class 18/16/13 under ISO 4406 to prevent wear. An integrated position transducer operates from a ±15 V supply and draws 35 mA on the positive rail, allowing direct connection to standard control boards.
Technical Specifications
Actuating Time (a–x)
60 ms
Area Ratio
1:1.5
Cleanliness Class (iso 4406)
18/16/13
Flow Tolerance Qvmax
10%
Hysteresis Max
0.1%
Main Stage Leakage (100 Bar)
600 cm3/min
Mass
14.7 kg
Maximum Flow
1600 l/min
Maximum Operating Pressure
315 bar
Nominal Size (ng)
50
Pilot Flow
28 l/min
Rated Flow (Δp 5 Bar)
750 l/min
Temperature Drift Zero Shift
1%
Transducer Supply Current (+15 V)
35 mA
Transducer Supply Voltage
±15 V
Vibration Resistance
25 g
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