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harmonic drive definition
harmonic drive definition
power harmonic drive

HMHG-Ⅱ Simple Unit (Flat) Series Harmonic Gearing

HMHG-II series flex spline belongs to the hollow flanging standard structure and the whole structure is compact. Its input shaft connects with the inner hole of wave generator through Oldham coupling. The power drive gearbox can be used in two methods: rigid gear is fixed and flex spline does output, or flex spline is fixed and circular spline does output.

Features of HMHG-Ⅱ Simple Unit (Flat) Series Strain Wave Gearing


  • Flat shape • Standard structure

  • Compact design

  • Zero backlash

  • Input/output coaxial

  • Excellent positioning accuracy and rotation accuracy

  • 30%higher torque capacity than the HMHS series

  • 43%longer lifetime than the HMHS series


Competitive quality with the above advantages of unit (hollow shaft) strain wave gearing, inquiry Hansmotion to buy harmonic drive


Features of HMHG-Ⅱ Simple Unit (Flat) Series Strain Wave Gearing


Applications of HMHG-Ⅱ Simple Unit (Flat) Series Strain Wave Gearing


  • Industrial Robots

  • Service Robots

  • Machining Center

  • Diagnostic Imaging



Parameters of HMHG-Ⅱ Simple Unit (Flat) Series Harmonic Gearing

ModelReduction ratioRated torque at input 2000r/minPermissible peak torque at start/stopPermissible max.value of ave.load torqueInstantaneous permissible max. torquePermissible max.input rotational speedPermissible ave. input rotational speedBacklash (arc sec)Transmission accuracy (arc sec)


NmNmNmNmr/minr/minWW
1450723946800035002090
80103014512090
100103614701090
175021443491700035002090
802956351132090
1003170511431090
2050337344127600035002060
804496611652060
10052107641911060
12052113641611060
25505112772242550035002060
80821781133322060
100872041403691060
120872171403951060
325099281140497450035002060
801533952177381060
1001784332818411060
1201784592818921060
4050178523255892400030001060
8026867536912701060
10034573848414001060
12038280258615301060


Contact Us
Contact PICEA Motion for Different Types of Harmonic Drive

Related HMHG Series Harmonic Drive Hat Type

Building 36, Zone 4, Huaide Cuigang Industrial Park, Fuyong Street, Bao'an District, Shenzhen, 518101, China
sunw400746@hansmotion.com + 86 18649687871