Damage Condition

Wear occurs due to repeated sliding between the two surfaces. Fretting occurs at fitting surface and also at contact area between raceway ring and rolling elements. Fretting corrosion is another term used to describe the reddish brown or black worn particles.

Possible Causes

• Poor lubrication
• Vibration with a small amplitude
• Insufficient interference

Countermeasures

• Use a proper lubricant
• Apply a preload
• Check the interference fit
• Apply a film of lubricant to the fitting surface