Why does some new equipment come in with bad bearings?
. Ans: This is not too surprising, really, when one thinks of all that might have happened in assembly, in transits, in setting up, etc. First, the subassembly might have been dropped or bumped hard or pressure might have been applied to the wrong ring during assembly which would have resulted in brine ling or a ball denting the raceway. Second, perhaps the jolting, jostling in shipment or the unit setting idle where there was extreme external vibration, resulted in metal to false brine ling. These are just samples of some of the more obvious and common problems. On the above, simply replacing the bearings should solve the shaft and housing dimensions must be checked.
