Worm Gears — Precision Metric Worm Gears from KHK USA

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KHK USA supplies precision metric worm gear sets — worm screws paired with worm wheels — for high-ratio speed reduction in a compact package. Worm gear sets are widely used in conveyor drives, lifting equipment, packaging machinery, and any application requiring high reduction ratios with a 90-degree shaft angle.

Worm Gear Ratios

KHK worm gear sets are available in reduction ratios from 5:1 to 60:1 depending on the module and wheel tooth count. High ratio reductions are achievable in a single stage, saving space compared to multi-stage spur or helical gear trains.

Self-Locking

Certain KHK worm gear configurations are self-locking — the load cannot back-drive the worm. This makes them ideal for lifting equipment and indexing applications where position must be held without a brake.

FAQ

Frequently Asked Questions

Worm gear sets with low lead angles (typically single-start worms) can be self-locking, meaning the load cannot back-drive the worm. KHK technical staff can advise on specific configurations.

KHK worm wheels are typically made from bronze (gunmetal) for good wear resistance against the hardened steel worm. Plastic worm wheels are also available for light-duty applications.

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Ready to discuss your metric gear requirements? Our engineering team provides application assistance, custom quotations, and technical support.