Which
of the following cam follower has the highest wear rate?
Knife
edge follower
Roller
follower
Flat
face follower
Spherical
faced follower
Knife
edge follower
●Knife edge follower uses is limited as it produces a great wear of the surface at the point of contact.
●In case
of roller follower, steep rise, jams the cam and therefore is not preferred.
●Flat-face
(mushroom) follower does not pose the problem of jamming but high surface
stresses and wear are quite high due to deflection and misalignment.
●Spherical
faced follower reduced the disadvantage of flat faced follower and used instead
of it.
Hence,
the correct option is (A).
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