Because of small wrapping of belt

Because of excessive contact

Because of gravitational pull and slippage

Because of increase in surface speed of pulleys

Increase the tension

Decrease the tension

Keep the belt centralised

Allow the pulley free rotation

Job card

Process chart

Batch record form

Batch processing form

Chain coupling

Flange coupling

Flexible coupling

Muff coupling

Root circle

Pitch circle

Base circle

Addendum circle