Directly Controlled Fan Drives

Viscous Directly Controlled Fan Drives

Now there's a viscous fan drive that responds to changing cooling requirements. Based on pulse-width-modulation (PWM) signals from the engine management system, VMaster viscous directly controlled fan drive adjusts its output to provide just the degree of cooling needed.


  • Rapid responsiveness
  • Optimum idling speed
  • Greater torque transmission
  • Modular and can be used with fans from other manufacturers
  • Endurance tested


  • Improved outer tube design
  • Simplified mounting
  • Integrated speed monitoring system applications
  • Compatible with engine management systems


  • Heavy-duty trucks
  • Medium-duty trucks
  • Light-duty trucks
  • Automotive
  • Off-highway equipment

Related Products

  • MagForce Electromagnetic Fan Drives
  • VMaster Viscous Air-Sensing Fan Drives
  • WindMaster Fans
  • WindMaster Ring Fans


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