Three Rings Reducers

Three Rings Reducers
Description :

EP Three Rings Reducer is an advanced transmission mechanism whose basic version is composed of one output shaft, two input shafts and three annular drive plates.

Input Configurations:

  • Keyed Solid Shaft Input
  • Integrated with Electric Motor

Output Configurations:

  • Keyed Cylindrical Solid Shaft Output
  • Keyed Conical Solid Shaft Output
  • Involute splined Solid Shaft Output
  • Keyed Cylindrical Hollow Shaft Output
  • Keyed Conical Hollow Shaft Output
  • Involute splined Hollow Shaft Output

Main Features:

  • 1. High load capacity, superior performance, long service life
  • 2. Large and dense gear ratio, 1 stage reduction ratio 11~99, 2 stage reduction ratio maximum 9801
  • 3. Smooth operation, low noise, little vibration, the noise is less than 78 dB, and the vibration amplitude is less than 0.025mm
  • 4. High efficiency, single stage 92%~96%
  • 5. Compact structure, light weight
  • 6. Multiple shaft configurations. The two input sections of three rings transmission mechanism can be integrated with helical gear pair or spiral bevel gear pair
  • 7. Multiple mounting positions and connections, multistage combination, customizable sizes and configurations

Main Options:

  • Oil Immersion & Splash Lubrication
  • Circulating Oil Lubrication
  • Natural Cooling
  • Auxiliary Cooling Devices


  • Horizontal Mounting
  • Vertical Mounting


  • 1. Three rings reducer is applicable to continuous duty, intermittent duty, short time duty
  • 2. Recommended Lubricating Oil:
    Extreme pressure (EP) gear oils N110~N200
    Semi-fluid grease for intermittent duty
  • 3. Three rings reducer can substitute planetary gearboxes, cycloidal reducers, multi-stage cylindrical gear reducers and worm gearboxes in mining, metallurgy, petroleum, chemical, rubber, construction engineering, lifting industries