Shaft is a mechanical representation to change or modify the
extent of rotation. Turning a shaft changes the value of the angle,
speed or distance represented by the position of that shaft.
Gears are categorized into several types. They are classified under
several sub-categories, according to their applications, properties,
material used and the position of axes. According to the relative
position of the axes of revolution, gears are classified into following
categories:
Gear types grouped according to shaft arrangement
| Parallel Axes |
Intersecting Axes |
Non-Intersecting
(Non-parallel) Axes |
| Spur Gears |
Bevel gears |
Hypoid gears |
| Helical Gears |
Straight bevel |
Crossed helical gears |
| Herringbone or double helical gears |
Zerol bevel |
Worm gears |
| - |
Spiral bevel |
- |
