Purdue University

Purdue University

Mechanical Engineering
Tribology Laboratory

Cam Follower Skidding

Neil Paulson

clip_image005The current research is looking into the causes of roller skidding in cam and follower contact. Follower skidding contributes to greatly increased wear on the surface and has been shown to cause premature failure of cams and followers. By understanding the factors that cause follower skidding, roller skidding can be prevented decreasing potential failures.








clip_image003A test rig is being built that will be capable of measuring the angular velocity of the roller follower under a variety of loading and lubricating conditions. The test rig will be capable of controlling the lubrication pressure, lubrication temperature, loading profile, and cam speed.

Cam Speed

0-1900 RPM

Lubrication Temperature

90-200 °C

Lubrication Pressure

0-90 PSI

Loading Force

Up to 16kN













clip_image007To verify and expand on the experimental testing being performed an analytical model of the cam and follower kinematics has been created. Using the vector loop, approach this model takes any cam profile and roller radius as input and calculates the maximum hertzian pressure as well as displaying the relative rotation of the follower to the cam rotation.

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