Flat and compact harmonic-drive gearheads

Oct. 20, 2005
SHD harmonic-drive gearheads from HD Systems Inc., Hauppauge, N.Y., are compact and use a cross-roller bearing with high moment stiffness.

The Flexspline is distorted into an ellipse by the Wave Generator and it engages the Circular Spline at the major elliptical axis. Teeth are completely disengaged on the minor axis.

With the Circular Spline fixed in place and the Wave Generator turning clockwise, the Flexspline deforms and turns Counterclockwise relative to the Circular spline.

For each complete revolution clockwise of the Wave Generator, the Flexspline moves counterclockwise by two teeth.


SHD harmonic-drive gearheads from HD Systems Inc., Hauppauge, N.Y. (hdsi.net), are compact and use a cross-roller bearing with high moment stiffness. The units are available in six different gearhead sizes, with thickness ranging from 17.5 to 33 mm, positional accuracy between 1 and 1.5 arc-min, and can handle input speeds of 4,000 to 8,500 rpm. The rated torque at 2,000 rpm ranges from 3.7 Nm (33 lb-in.) to 206 Nm (1,823 lb-in.).

Sponsored Recommendations

NEW Low Profile, Ultra Compact Power Supplies

March 13, 2024
Learn more HERE about Altech's Power supplies!

Altech's Liquid Tight Strain Relifs Catalog

March 13, 2024
With experienced Product Engineers and Customer Service personnel, Altech provides solutions to your most pressing application challenges. All with one thought in mind - to ensure...

Industrial Straight-Through Cable Gland

March 13, 2024
Learn more about Altech's cable glands and all they have to offer for your needs!

All-In-One DC-UPS Power Solutions

March 13, 2024
Introducing the All-In-One DC-UPS, a versatile solution combining multiple functionalities in a single device. Serving as a power supply, battery charger, battery care module,...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!