Brinelling - Isuzu 76mm

A brinelled bearing causes a "Knock" or "Click" approximately every two revolutions of the wheel because the bearing rollers do not travel at the same speed as the wheel.

Brinelling is caused by excessive thrust which pushes the balls up on the pathway and creates a triangular shaped dent or "Brinell" spot. Brinelling can also be caused by pressing the ring on a shaft or in a housing through the outer ring.

False brinell occurs as a result of vibration outside of the area where the bearing is mounted. The condition is identified by slight brinell marks giving a washboard effect in the ring. In operation, the effect is characterized by excessively noisy operation on a low note.