Gears Spec Table
Gears transmit rotational force between two shafts. Spur gears are easy and inexpensive to manufacture, widely used at low to medium speeds. Helical gears run quieter and are preferred in reducers. Worm gears offer high reduction ratios with self-locking capability; bevel gears transmit power between intersecting shafts.
Spur Gear
Spur Gear · 10 sizes
Helical Gear
Helical Gear · 4 sizes
Bevel Gear
Bevel Gear · 4 sizes
Worm Gear
Worm Gear · 3 sizes
Rack Gear
Rack Gear · 4 sizes
Internal Gear
Internal Gear · 3 sizes
Frequently Asked Questions
What is the difference between spur gears and helical gears?
Spur gears have teeth parallel to the axis — easy to make, no axial force. Helical gears have angled teeth — quieter and higher torque capacity, but generate axial thrust loads.
What is gear module (m)?
Module = pitch circle diameter / number of teeth. Larger module means larger, stronger teeth. Mating gears must share the same module. Example: m2, z=30 → pitch diameter 60mm.
What are the key characteristics of worm gears?
High reduction ratios (1:10–1:80) in a single stage with self-locking (back-drive prevention). However, sliding contact lowers efficiency (40–90%) and requires heat management.