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GFR Pancake Gear | Harmonic Drive

GFR is a heavy duty pancacke gear that uses a double wave generator bearing. By arranging the wave generator bearings in two lines and widening the tooth width of the Circular Spline and the Flexspline, the GFR supports high torque capacity.

The GFR pancake gear consists of four main parts: Wave Generator, Flexspline, Dynamic Spline, and Circular Spline. When assembled, rotation of the Wave Generator as a high speed input member imparts a rotating elliptical shape to the Flexspline. This causes progressive engagement of its external teeth with the internal teeth of the Circular Spline. The fixed Circular Spline, having a larger number of teeth than the Flexspline causes the latter to precess at a rate determined by the ratio of tooth difference to the total number of teeth. With the same number of teeth as the Flexspline, The Dynamic Spline rotates with, and at the same speed as, the Flexspline and is the output member of the drive.

Key Features:

  • Maximum reduction ratio in minimum space
  • Low backlash
  • Simple installation and maintenance
  • GFR is a heavy duty version of the GFB
  • GFR uses a double wave generator bearing

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