Worm Gears
Worm and worm-wheel sets for high reduction ratios, compact drives, and self-locking motion control.
Worm gearing delivers large speed reductions in a compact package, with the added benefit of self-locking behavior. We manufacture worms and bronze worm wheels as matched sets, cut and finished for smooth, efficient contact across the full face.
Key features
- Matched worm and bronze worm-wheel sets
- High reduction ratios in a compact envelope
- Self-locking configurations available
- Full-face contact for efficiency and long life
- Custom ratios and center distances to print
Typical applications
How worm gears stack up
Toggle gear types to compare geometry, efficiency, and load characteristics side by side and find the right fit for your drivetrain.
| Specification | Spur GearsView details | Helical & Double HelicalView details | Worm GearsYou're viewing this |
|---|---|---|---|
| Tooth geometry | Straight-cut teeth | Angled / herringbone | Worm + bronze wheel |
| Shaft arrangement | Parallel | Parallel | Right-angle / offset |
| Ratio per stage | Up to 8:1 | Up to 10:1 | Up to 100:1 |
| Efficiency | 98–99% | 96–98% | 50–90% |
| Load capacity | High | Very high | Moderate |
| Running smoothness | Moderate | High — quiet | Very high |
| Self-locking | No | No | Yes |
| Max size | 160 in | Large-dia. | Compact |
Spur Gears
Precision straight-tooth spur gears cut to AGMA 11 in diameters up to 160 inches — the workhorse of heavy power transmission.
Helical & Double Helical
Single, double helical, and herringbone gears for smooth, quiet, high-load meshing in demanding drivetrains.
Bevel Gears
Spiral, straight, and skew bevel gears for reliable right-angle and intersecting-shaft power transmission.