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State the advantages of roller follower over knife edge follower.

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Question: 

State the advantages of roller follower over knife edge follower.

Answer: 

Advantages of roller follower over knife edge follower a) Roller follower has less wear and tear than knife edge follower. b) Power required for driving the cam is less due to less frictional force between cam and follower.

Sub Sub question Number: 
iii
a