CAD Library Home Gearboxes & Air Motors Miniature Gearboxes 6 Products Bevel Box Cross Axis Helical - Inch Cross Axis Helical - Metric Flange Worm - Inch Flange Worm - Metric Compact Worm Gearboxes - Inch Our miniature worm gear box assembly may be small, but it's tough enough to handle demanding power transfer applications. Constructed with machined aluminum housings and hardened steel input and output gears, they’ll deliver reliable performance.