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Traction Drive Speed Reducers with NEMA Mounting and our Hypoid Gearboxes.

Worm & Wormwheels

Worm and Worm Gears sets transfer motion between non-intersecting right angle shafts. They are the most compact small precision gears system available, as well as the quietest and smoothest running.  A worm and worm gears set can provide a high reduction ratio in a very small space. Ondrives.US has been manufacturing worm and wheel gear systems for over 30 years. We offer worms and worm gears sets in a variety of inch and metric sizes and with numerous pitch, tooth count, and hub options. Order a worm and wheel system for your application, request a quote, or contact Ondrives.US for more information. For full specifications, see individual product listings.


Ondrives.US’ High Performance Worm Gear Systems

A worm is configured similarly to a machine screw, but with teeth designed to mesh with the teeth of a worm wheel. These small precision gears may have single or multiple threads (called starts). With each revolution, a single-start worm will move the associated worm wheel by one tooth; worms with multiple starts will move the mating worm gear a corresponding number of teeth with each revolution. (e.g., a 2-start worm will move its worm wheel two teeth per revolution.)

16, 24, 32, 48 or 64 Diametral Pitch

Standard worm gear worm wheels feature straight, helical-cut teeth and provide only one point of contact with the worm. Ondrives.US offers “throated” worm wheels with curved, helical-cut teeth whose curves match the radius of the worm itself. Throated worm wheels provide a much greater contact area, which vastly improves load capacity and longevity.

 Our precision ground stainless steel worm and wheels and phosphor bronze worm gears provide the best accuracy, smoothest operation, and longest working life. Mount your worm gears on Ondrives.US precision-ground precision ground shafts—available from stock. We also offer a variety of worm wheel gearboxes.

The Ondrives.US Advantage: We Know Worms & Worm Wheels

  • Worm wheel gears systems for instrumentation, servo drives, encoders, power transmission, and more
  • Available with 16, 24, 32, 48, or 64 diametral pitch
  • Available with 1, 2, or 4 starts
  • Worm material: 303 stainless steel
  • Worm wheel material: bronze QQ-B-637 alloy 464
  • Inch and metric worm gears available
  • 30-plus years of precision worm gears manufacturing experience
  • Custom worm gears available in almost any material. Contact us with your custom requirements.
Order the small precision gears you need, request a quote, or contact us to learn more.