My company makes some large rotating assemblies as part of their line of equipment and, as a rule, uses brand-name bearing components from SKF, Timken, SealMaster, or Fafnir to name a few. Our purchsing group has come to us with a proposal to use Koyo deep groove ball bearings instead of SKF on a new application. All of the physical specs seem to be the same as the bearing we were buying previously but with a substantial cost savings. Does anyone have any experience with this brand of bearings either good or bad?