Hypoid

Herring bone

Rack and pinion

Helical gear

V- belt

Flat belt

Link belt

Ribbed belt

To prevent vibration

To reduce the weight

accept the crowbar

To balance the machine

By sliding the pulley

By fixing idler pulley

By adjusting the length of belt

By adjusting the screw of pulley

Because of small wrapping of belt

Because of excessive contact

Because of gravitational pull and slippage

Because of increase in surface speed of pulleys