These easy to use products are unitized versions of the small HarmonicDrive® models.
Adopts 4-point contact ball bearing for an even more compact and lighter design

[New release] CSF-7-2XH add

Click here for the ultra flat high stiffness type CSF-2UP Series

*Product images and CAD images are for reference purposes.
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  1. Model name: CSF series
  2. Model Nos: 5, 7(New)8, 11, 14
  3. Reduction ratio: 30, 50, 80, 100
  4. Model:
    • 1U = Shaft input type Shaft output (conclusive)
    • 1U-CC = Gear head type Shaft output
    • 1U-F = Shaft input type with flange output
    • 1U-CC-F = 1U shape motor mounted type with flange output
    • 2XH-J = Gear head type Shaft output
    • 2XH-F = Gear head type Flange output
  5. 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® 2403-26R 2308-25R 2308-25R
CSF supermini/CSF-mini・FHA-C mini・RSF supermini Compact Variation 1906-2R 1906-2R
【CSF-mini Series #7】 New Product News vol.49 2310-0R 2310-0R

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 product that provides the smallest model of Harmonic Drive® (#3) as a unit. It adopts our unique 4-point contact ball bearing as the main roller bearing to enable direct support of external loads. Select from a range of shapes for different installation methods.
The standard Harmonic Drive® model. The components of this unit product have been made easier to handle. It includes an accurate high stiffness cross roller bearing in the main roller bearing to enable direct support of external loads.


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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