Before revision: Advanced Concepts of Bearing Technology By Tedric A. Harris, Michael N. Kotzalas -- CRC Press 2007 Page 284 For example, brinelling occurs in casters when the ball bearings within the swivel head produce grooves in the hard cap, thus degrading performance by increasing the required swivel force.
After revision: For example, brinelling occurs in casters when the ball bearings within the swivel head produce grooves in the hard cap, thus degrading performance by increasing the required swivel force.