CSG-GH Series / Gear Head Harmonic Speed Reducer / High Torque Type


The CSG-GH series is a gear head type HarmonicDrive® for high load capacity outfitted with high stiffness bearings (cross roller bearings).

- High torque
- Long service life (better rated life)
- Backlash-free

Compared to CSF Series:
    Torque capacity increased by 30%
    Service life improved by 43% (10,000 hours)

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*Product images are for reference purposes.


  1. Model: CSG series
  2. Model Nos: 14, 20, 32, 45, 65
  3. Reduction ratio: 50, 80, 100, 120, 160
  4. Model: GH = Gear head type
  5. Output shaft shape:
    • F0 = Flange output
    • J2 = Straight shaft (key-less)
    • J6 = Raight shaft (key center, tapped)
  6. Form symbol for motor flange and input joint (will vary depending on the motor mounted)
  7. Special specification:
    • No description = Standard product
    • SP = Special specification


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Catalog Series Catalog name Japanese English Traditional Chinese
HarmonicDrive® Reducer for precision control General catalog of HarmonicDrive® 2404-27R 2404-27R 2404-27R

Manual / Software

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Manual/Software Type/Series Material name/software name Detailed information English
Manual HarmonicDrive® Speed Reducer HarmonicDrive® Engineering Data

Related products

This series adopts standard one-touch input joints and mounting flanges for servo motors from various companies to enable simple motor mounting. The CSF Series is the standard Harmonic Drive® model.
The standard planetary speed reducer Harmonic Planetary® model. This high accuracy planetary speed reducer has a back lash of three minutes or less with standard specifications and one minute or less with precision specifications.


If you have any comments about this product, please contact us using the inquiry form or the nearest sales office.

The academic and general name of "Harmonic Drive®" is "Strain Wave Gearing", and the name "Harmonic Drive®" is a registered trademark that can only be used for products manufactured and sold by the Company.

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