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Motion Control Resources

New Large, Hollow-Shaft Gear Unit from Harmonic Drive LLC

Electromate Inc.

The new FBS-2UH gear unit series from Harmonic Drive® features a large, hollow shaft with a compact outer diameter.The new FBS-2UH gear unit series from Harmonic Drive® features a large, hollow shaft with a compact outer diameter.  The extra large hollow shaft is ideal for robots and machines requiring complex cabling to pass through the axis of rotation.  

The new gear unit design features Harmonic Drive's “S” tooth profile for optimal tooth engagement resulting in high torque, high-torsional stiffness, long life and smooth rotation.

The FBS-2UH Series is available in two sizes (25, 32) and three ratios (30:1, 50:1, and 100:1).

Key features include:

  • Extra large hollow-shaft diameter is our largest yet for a standard product
  • Compact dimensions for use in robotics
  • Outer diameter and hollow bore optimized for design flexibility and performance
  • Zero Backlash
  • Accuracy <1 arc-min
  • High torsional stiffness
  • High efficiency
  • Smooth operation
  • Robust cross roller output bearing

Information on the FBS-2UH hollow-shaft gear unit can be viewed at: https://www.electromate.com/pub/media/assets/catalog-library/pdfs/harmonic-drive/FBS_GearUnit.pdf

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