Cam follower

Details Cam follower Cam follower

2008-06-17

2008-06-17

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090480, C123S090440, C074S569000

Reexamination Certificate

active

07387098

ABSTRACT:
A cam follower includes a roller on which a cam rolls. A material ratio Rmr (C) (C: a section level %) of an radially outer surface of the roller is set to relations of 0%<Rmr (10%)≦10%, a Kurtosis Rku of a roughness profile of the outer surface is set to 4≦Rku≦10, an arithmetic mean roughness Ra of the outer surface is set to 0<Ra≦0.15, and a compression stress S of the outer surface is set to 800 MPa≦S≦1,100 MPa.

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