In general, noise within an antifriction bearing can be classified as coming from random and periodic sources. The most annoying and preventable come from periodic causes, for example, a nick on a bearing raceway due to handling damage during assembly.
As an aid in detecting such periodic sources in a tapered roller bearing, formulas are provided which determine the rate of contact for a specific point on one of the raceway surfaces, that is, cup, cone, or roller. Some experimental evidence demonstrating the worth of such an approach is included.
