ESDU 91026:2010

$126.75

Analysis of Cam Roller Followers

Published By	Publication Date	Number of Pages
ESDU	2010-07	NA

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Category: ESDU

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Description

INTRODUCTION

This Data Item presents a procedure for assessing the
suitability of a user-specified commercial needle-bearing roller
follower driven by a disc cam. The choice of an appropriate roller
follower is an important step in the design of cam systems used in
many industrial machines and the use of the procedure presented in
this Item, in conjunction with a suitable manufacturer's catalogue,
will ease this choice. A decrease in design time can be achieved
together with improvements in life, load/speed capacity and hence
machine reliability.

Cam roller followers are subject to conditions of continuously
varying angular velocity and load during operation. To assess the
performance of a given roller it is necessary to determine, at a
series of cam angular positions, the values of load and velocity
and then, using the method recommended in manufacturers'
catalogues, to convert them to equivalent load (see Equation
(3.46)) and equivalent velocity (see Equation (3.45)). This
analysis is carried out by a computer program (see Section 7)
supplied with this Data Item. The program determines the estimated
life, the maximum contact force at the cam/roller interface, the
maximum load on the roller stud or spindle and the maximum angular
velocity of the roller. These values are then used to assess the
suitability of the chosen roller.