VT-VSPD-1-2X/V0/0-0-1 R901077297 | high-precision proportional directional control valve

​Parameter ​Specification
​Product Model VT-VSPD-1-2X/V0/0-0-1 R901077297
​Manufacturer Bosch Rexroth
​Type Proportional Directional Valve w/ OBE
​Spool Size NG10
​Max Flow 60 L/min @ Δp=10 bar
​Operating Pressure 350 bar continuous
​Control Signal ±10V DC
​Position Feedback OBE (Non-contact displacement)
​Hysteresis <0.1% FS
​Linearity <±1% (0-90% stroke)
​Response Time (90%) <30 ms
​Voltage Supply 24 VDC ±10% (solenoid)
​Environmental -40°C to +100°C hydraulic oil
​Ingress Protection IP65 (with connector)
​Mounting Pattern ISO 4401-07-02-0-05
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Description

Product Overview
The ​REXROTH VT-VSPD-1-2X/V0/0-0-1 R901077297 is a high-precision proportional directional control valve engineered for closed-loop motion control in demanding hydraulic systems. Part of Bosch Rexroth’s VT series, this valve features an integrated position transducer (OBE) and ruggedized design for mobile and industrial applications requiring dynamic force control. With a nominal flow rating of 60 L/min and maximum operating pressure of 350 bar, the ​REXROTH VT-VSPD-1-2X/V0/0-0-1 delivers ISO 4401-compliant directional metering for cylinders and hydraulic motors. Its symmetric spool design (±5% overlap) enables bidirectional load holding with minimized hysteresis (<0.1%), while IP65-rated construction resists shock, vibration, and contaminant ingress in construction machinery, presses, and injection molding equipment.

Technical Specifications

​Parameter ​Specification
​Product Model VT-VSPD-1-2X/V0/0-0-1 R901077297
​Manufacturer Bosch Rexroth
​Type Proportional Directional Valve w/ OBE
​Spool Size NG10
​Max Flow 60 L/min @ Δp=10 bar
​Operating Pressure 350 bar continuous
​Control Signal ±10V DC
​Position Feedback OBE (Non-contact displacement)
​Hysteresis <0.1% FS
​Linearity <±1% (0-90% stroke)
​Response Time (90%) <30 ms
​Voltage Supply 24 VDC ±10% (solenoid)
​Environmental -40°C to +100°C hydraulic oil
​Ingress Protection IP65 (with connector)
​Mounting Pattern ISO 4401-07-02-0-05

Key Functionality

Precision Flow Control:

  • Asymmetric damping grooves compensate for load-induced pressure spikes
  • Pressure-balanced spool requires ≤20% pilot force for energy efficiency
  • Deadband compensation eliminates “stick-slip” during low-velocity operation

VT-VSPD-1-23/V0/0-0-1

Integrated Diagnostics:

  • OBE transducer provides real-time spool position feedback (±0.5% accuracy)
  • Fault codes for coil open/short circuits via onboard diagnostics
  • Predictive maintenance triggers based on current draw vs. position deviation

Deployment Flexibility:

  • Central/unified mounting options via ISO 4401 subplate
  • Reverse flow capability (P➜A/B➜T or P➜B/A➜T)
  • Explosion-proof variants for ATEX Zone 1 environments

Seamless Integration:

  • Compatible with Rexroth VT-HACD control electronics
  • Plug-and-play with Sytronix digital drives

Application Areas

  • ​Mobile Hydraulics: Boom/arm positioning in excavators with 3D grade control
  • ​Injection Molding: Clamp force control (±2% repeatability)
  • ​Test Benches: Dynamic load simulation for suspension systems
  • ​Steel Mills: Roll gap adjustment in hot rolling mills
  • ​Wind Turbines: Pitch cylinder control during power curtailment
  • ​Robotics: Hydraulic actuator synchronization

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