Swapping from a 143T to a 143TC motor

It may be nothing adverse, just something to check
Well, took it apart again and I cannot see where anything is making contact. Not sure what happened to the armature fan, maybe something in production hit it. Not sure. The bearings feel ok but I think I’m gonna replace them. It’s got to be something with the rear bearing. Maybe under load is the only way you can detect it. On that note, what brand and type bearing would be the best? Don’t care if they are pricey as long as they are good. Thanks
 
Well, took it apart again and I cannot see where anything is making contact. Not sure what happened to the armature fan, maybe something in production hit it. Not sure. The bearings feel ok but I think I’m gonna replace them. It’s got to be something with the rear bearing. Maybe under load is the only way you can detect it. On that note, what brand and type bearing would be the best? Don’t care if they are pricey as long as they are good. Thanks
It has 1 NTN and one FAG
 
NSK, Timken, SKF , FAG, are all quality products.
You’re going to want C3 clearance
The bearing # should be something like 6306-2RS/C3
Should be about $35 a bearing
Found it. The front bearing was not pressed all the way up to the shoulder. Decided to put a little pressure on them to make sure they were seated and the front pressed down about an eighth of an inch. Bet she will be quite now
 
Is the wave spring present?
It is, at least the one in the back cover. Front bearing doesn’t have one but it’s got a retaining plate. I got new bearings coming. It’s almost like a vibration through the rear cover that seems to originate at the bearing
 
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