Classification of Gears

Gears are broadly classified into three types,

1. Parallel shaft gears
2. Intersecting shaft gears
3. Non parallel non intersecting shaft gears

1.Parallel shaft gears

• Spur gear
• Helical gear
• Rack and pinion

2.Intersecting shaft gears

• Bevel gear-Straight bevel, Spiral bevel, Hypoid bevel

3.Non parallel non intersecting shaft gears

• Spiral gear
• Worm gear