[JonC]

I may have been in error suggesting the thin sleeves, the problem is they (the sleeve) will deform to the shafts discrepency. Without seeing where the worn area is or how wide this area is it may not be the best approach. I would not use a prick punch and stake the shaft this will not produce a uniform condition and may lead to concentricity issues increasing vibration and shortening the life of a bearing. If repair is needed rather than replacement I would take it to a machine shop and have them turn the shaft down to accept the sleeve or make a new sleeve to install and remachine to the original size. This may cost more than the replacement and you need to determine that yourself.