CHAIN DRIVES
The velocity ratio in belts and ropes are vary due to slip Because of contact surface becoming slightly greasy . Chain drives are used where the distance between the shaft center is short such as cycle , motor vehicles .
ADVANTAGES OF CHAIN DRIVE
1 . Chain drive takes a less space than ropes or belt drive .
2 . No slip takes place
3 . More power is to be transmitted when the distance between shaft is less
4 . High transmission efficiency
5 . Capable transmitting a good amount of power
CLASSIFICATION OF CHAINS
The chains are classified into hoisting and hauling chains , conveyor chain , power transmission chain ,
1 . HOISTING AND HAULING CHAIN
The link in such chains are oval or square shape . These chains operates at low speed . These chains have low manufacturing cost .
2 . CONVEYOR CHAIN
The link in such chain are either of hook joint type or closed type These chains run at average slow speeds and lack smooth qualities .
3 . POWER TRANSMISSION CHAIN
These chains are available at block , roller and silent configuration . These chains are essentially built for high speed performance .
The block chain are being put to some use as conveyor chain operating at low speed .
The roller chain assembly essentially consists of
1 . The pink link plate
2. Pink , brushes and roller
The salient features of roller chain is
1 . Strong and simple construction
2 . Provide good service even under serve working conditions .
3 . Require little lubrication .





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