Shaft Damaged by Fretting
WARNING: This page is about a different car, the 2002 Ford Pickup, 2002 Ford F550 Super Duty, and 2002 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
- The term describes gnawing marks in the race surface. When combining high differential speeds with high uniformity of rotation, (such as towing the vehicle with the driveshaft connected), the contact between the roller bodies and the race may develop a high proportion of slip. If cooling or lubrication in the needle bearing is no longer sufficient, this can lead to overheating and cause fretting corrosion or bearing seizure.