Browse Publications Technical Papers 931933
1993-11-01

Development of an Inexpensive, Highly Wear-Resistant Ceramic Cam Follower - Part 1 Engine Test Results 931933

This paper describes the development of an inexpensive ceramic cam follower that uses a silicon nitride material and is more wear and scuff resistant than the sinter alloy cam follower. A thin ceramic disk is directly brazed on a steel cam follower body without using any stress-relief materials which makes the grinding for crowning unnecessary, reducing the production cost. We performed a material screening test using an abrasion tester to determine the optimum type of silicon nitride and the optimum surface roughness. Engine endurance tests proved its excellent wear and scuff resistance. Consequently, it has been adopted in the 1993 series production engines as the first ceramic cam follower.

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