Got it Stan ! I just didn't understand your use of the word "wear". Yes, motor manufacturers try to make electric motors more job specific to save mfg. cost. There used to be more of a "one size fits all" era. Recently I bought a used Baldor 2hp, 220v motor on Ebay. It had slightly noisy bearings so I decided to replace them plus inspect and clean the inside in the process. Bought a pair of good US made bearings. The inside of that Baldor was a work of art. Totally brushless, the armature was solidly made and insulated such that I could hardly see the laminations. The field windings were heavily varnished along with the paper and bakelite separators. Since it is a sealed motor housing, there was very little dirt and debris inside so cleaning was easy. I replaced the bearings and reassembled it and plugged it in. It was flawless and quiet ! I could have bought a new motor for $100 + at Harbor Freight or Rockler etc. or buy a new Baldor for $500 or so. I went differently and bought the used Baldor on Ebay for $94.00 plus $17.00 for a couple bearings. Why ? The inside of a Baldor is extremely well built and should last forever (bearings excepted). I guess thats why they cost around $500 new. Finally, I'd guess that the used motor I bought is more than 30 years old.........Bruce