Worm and Wormwheel Manufacturing UK

Worm gearing combines a screw-like worm with a mating wormwheel to create a compact right-angle transmission. Ondrives manufactures and supplies worms, wormwheels and precision worm-drive components for standard and bespoke applications.

Worm gear geometry

Important variables include module or axial pitch system, worm starts, wormwheel tooth count, pressure angle, lead angle, centre distance, material pairing and backlash requirement.

Sliding contact and material choice

Worm drives contain significant sliding, so material pairing, finish, lubrication, temperature and duty cycle are important to performance. Ratio alone is not enough to define a suitable design.

Manufacturing the pair

The worm and wheel need compatible geometry and controlled centre distance. Blank datums, bore or shaft features and final inspection should therefore be planned as part of the complete pair.

Selecting a worm transmission

Review torque, speed, duty cycle, backlash, efficiency, temperature, lubrication and mounting conditions. For an existing application, also provide the original centre distance and mating-part data.

Need help with a specific gear? Send Ondrives the drawing, model or available gear data. For new designs, include the operating duty and mating-component information so the manufacturing route can be reviewed in context.

Worm transmission engineering considerations

Worm gearing combines a screw-like worm with a worm wheel and usually involves substantial sliding contact. Ratio alone is therefore not enough to select or reproduce a working transmission.

Starts, ratio and lead angle

Worm starts and wheel tooth count determine the nominal ratio. Lead angle influences sliding, efficiency and tendency to back-drive, so it must be considered with the complete geometry rather than ratio alone.

Material and lubrication

Material pairing, hardness, surface finish, lubricant, speed and thermal conditions influence wear and efficiency because tooth contact contains significant sliding.

Back-driving and safety

Do not treat a worm gearbox as a guaranteed brake or safety holding device. Back-driving behaviour varies with geometry, lubrication, wear, vibration and load and must be assessed for the specific application.

For a worm/wheel manufacturing enquiry include centre distance, ratio or starts/tooth count, module or axial pitch system, pressure angle/tooth form, hands, face dimensions, material pair, duty, speed, torque and lubrication assumptions.