This article was updated on June 18, 2025. It was orginally published Nov. 15, 2002. Proper installation and maintenance are essential to bearing performance and premature failure prevention due ...

Shafts that are out of round (circumferential variation) by even 0.0001 in. create preloading on some of the ball tracks causing uneven wear and shortening bearing life by as much as 50%. Figure 2 ...