Worms & Worm Gears
16, 24, 32, 48 or 64 Diametral Pitch
Worm and Worm Wheel Gears transfer motion between non-intersecting right angle shafts. They are the most compact gear system available, as well as the quietest and smoothest running. A worm and worm gear system can provide a high reduction ratio in a very small space.
Ondrives.US has been manufacturing worm and worm wheel systems for over 30 years. We offer worms and worm gears in a variety of inch and metric sizes and with numerous pitch, tooth count, and hub options. Our precision ground stainless steel worms and phosphor bronze worm gears provide the best accuracy, smoothest operation, and longest working life.
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. Worms 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.)
Standard 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.
The Ondrives.US Advantage: We Know Worms & Worm Wheels
- Worm gear 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 sizes available
- 30-plus years of gear manufacturing experience
- Custom gears available in almost any material. Contact us with your custom requirements.
Mount your worm gears on Ondrives.US precision-ground precision ground shafts—available from stock.
We also offer a variety of worm wheel gearboxes.
For full specifications and Dimensional Parametric Search, see individual product listings.