Worm gearing describes a gear set that consists of a worm and a worm gear. The worm has one or more straight-sided teeth wrapped around a cylindrical body very much like external threads on a screw. The mating worm gear has teeth of involute form that are throated allowing the envelopment of the worm when in mesh thus resulting in a larger area of contact between mating teeth. Mating worms and worm gears are most commonly mounted on shafts where the axes are perpendicular to one another and do not intersect. The primary benefits of worm gearing are that it offers efficient power transmission, high ratio reduction, and quiet operation within a compact mechanism. Because of its many advantages worm gearing has numerous practical applications.

Worm & Worm Gear Experience

Geartronics produces worm gear sets in various sizes and configurations that are used in a wide range of controls and drive units throughout industry. Most commonly, steel is the material of choice for worms while a softer material such as bronze or ductile iron is selected for worm gears. This allows the worm gear to wear during use to more closely match the profile of the worm teeth resulting in smoother and quieter operation. It is usually beneficial, although not required, to have the worms and worm gears produced by the same manufacturer so that each individual component can be sized appropriately to assure proper mesh and backlash during operation.

Geatronics has manufactured worms and worm gears for customers from a number of industries, including:

  • Aerospace
  • Appliance
  • Automotive
  • Consumer Product
  • Defense
  • Food Processing
  • Hand & Power Tools
  • Industrial Equipment
  • Machine Controls
  • Medical Device & Equipment
  • Motion Control
  • Oil & Gas

Worm & Worm Gear Materials

Geartronics has the capability of producing worms and worm gears from a wide range of materials, including:

Alloy Steel
Castings & Forgings
Carbon Steel
Ductile Iron
Pre-Heat Treated Steel
Stainless Steels
Tool Steel

contact us

Geartronics Incorporated
100 Chelmsford Road
North Billerica, MA 01862

Call Us: 978.663.6566

Fax: 978.667.3130