Harmonic Drive LLC | 247 Lynnfield St. Peabody, MA 01960 | 800-921-3332
Harmonic Drive and Harmonic Planetary are registered trademarks of Harmonic Drive LLC.


Hollow-Shaft Gear Unit

This new Harmonic Drive® gear features a large, hollow shaft with a compact outer diameter. An extra large hollow shaft is ideal for robots and machines requiring complex cabling to pass through the axis of rotation. The new gear design features Harmonic Drive's “S” tooth profile for optimal tooth engagement resulting in high torque, high-torsional stiffness, long life and smooth rotation. FBS Series is available in two sizes (25, 32) and two ratios (30:1, 50:1).

Key Features:

  • 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

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Ordering Code Ratio Limit for Repeated Peak Torque Limit for Momentary Peak Torque
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Ordering Code Ratio Limit for Repeated Peak Torque Limit for Momentary Peak Torque
Compare Products Nm Nm
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FBS-25-30-2UH 30 25 50
FBS-25-50-2UH 50 47 93
FBS-32-30-2UH 30 48 96
FBS-32-50-2UH 50 92 151

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