CSG-LW Series / Unit / High Torque & Lightweight Type


Its newly designed shape and use of lightweight material makes it about 30% lighter.
The CSG series unit type HarmonicDrive® for high load capacity is outfitted with high stiffness bearings (cross roller bearings).

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

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

*Product images are for reference purposes.


  1. Model: CSG series
  2. Model Nos: 14, 17, 20, 25, 32, 40, 45, 50, 58, 65
  3. Reduction ratio: 50, 80, 100, 120, 160
  4. Model:
    • 2UH = Unit type
  5. Type: LW = Lightweight type
  6. Special specification:
    • No description = Standard product
    • SP = Special specification


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Catalog Series Catalog name PDF
HarmonicDrive® Reducer for precision control General catalog of HarmonicDriveR

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

A sealed full unit type that integrates everything up to the input side seal. This easy-to-handle product requires no seal design.
Achieves a 30% lighter design than the CSF unit series. Contributes to lighter and faster equipment and robots with greater load capacity.
This simple unit type with hollow structure embeds a cross roller bearing only in the component type.


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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