| Spur Gears |
By far the most common gear, spur gears have teeth that run perpendicular to the face of the gear |
| Helical Gears |
Similar to spur gears, except the teeth are at an angle to the gear face, giving more tooth contact in the same area. |
| Herringbone Gears |
Similar to two helical gears placed side by side with the teeth at opposite angles. |
| Bevel/Miter Gears |
Bevel gears are used when power needs to be transmitted at right angles or angles not near parallel. |
| Worm Gears |
Worm gears are used to transmit power at right angles where high reductions are required. |
| Internal Gears |
Internal gears resemble inverted spur or helical gears with the gear teeth on the inside edge. |
| Racks |
A rack is basically a straight gear used to transmit power and motion in a linear movement. |
| Face Gears |
Face gears transmit power at (normally) right angles in a circular motion. |
| Involute Splines |
Splined shafts and hubs are commonly used as connectors. One common purpose is to connect motors to gear reducers. Another is transmissions. Involute splines have round-sided teeth. |
| Straight Sided Splines |
Straight Sided Splines are similar to involute splines but have straight-sided teeth. |
| Sprockets |
Sprockets are used to run chains or belts. They are typically used in conveyor systems. |
