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Speed Reducers with Traction Drive Technology

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NEMA Size 17
Traction Drive PDF
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NEMA Size 23
Traction Drive PDF







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Utilizing rolling motion, power is transferred at various ratios with minimal energy loss.
Traction Drive

Conventional Gearboxes or Speed Reducers not meeting your needs?

There is another OPTION

With 98% efficiency and only 6 moving parts, Traction Drive typically out lasts conventional gearboxes and speed reducers by a factor of 3.


What is traction drive technology?
  • Gearless drive
  • Uses engineered traction fluid to cool and lubricate – as the driving and driven elements interface in the drive the traction fluid regularly changes from liquid-to-solid-to-liquid
  • Highly efficient with only 6-moving parts
  • No metal to metal contact
What are the benefits?
  • No slippage or lost motion between input and output shafts
  • Smooth operation infinite ratio due to gearless design
  • Long operating life (2-3 times standard gearboxes)
  • Dramatic reduction of motor torque ripple
  • Generates less heat than conventional drives
  • Low vibration and noise level
  • Low backlash
  • High reliability
  • No back driving
  • Input operating speeds to 15,000 rpm
  • 10 to 30 in/lbs of torque
  • Significantly less maintenance than conventional gearbox
  • Allows the use of a smaller motor which is more efficient at higher speeds
  • Standard NEMA sizes for easy mounting into new or existing applications
  • Optional overrunning clutch available
Where can traction drive be used?
Anywhere precise and quiet operation is desired

  • Medical Equipment:
    • Patient Handling
    • Imaging Equipment
    • Dialysis Machines
    • Mobile Hospital Equipment
  • Pharmaceutical
  • Robotics
  • Pumps
  • Blowers
  • Fans

  • Conveyers
  • HVAC Systems
  • Textile Processing
  • Battery Operated Vehicles
  • Precision dispensing of chemicals and films
  • Other power transmission and motion applications
Traction Drive vs Gearbox Technology
Low rolling friction, minimal moving parts allows for maximum energy transfer efficiency

Optional overrunning clutch available – prevents regeneration of power in certain applications
Torque Curve at Set RPM Graph
Not torque loss between 10 and 3,000 RPM
Traditional gearboxes lose over 50% of their torque at the same speed ranges.
Db @ 1 Meter Graph
The traction drive operates at only 40-50 Db.
This is perfect for low noise requirement applications.
Operating Temperature @ 72° Ambient
The traction drive stabilizes at a low operating temperature and can run continuously without risk of damaging the internal components.
Torque Ripple and Vibration
Results: Using the traction drive improved torque ripple by 84%