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Calgary - Looking to borrow a bearing puller

YYCHM

YYCHM

(Craig)
Premium Member
Need to pull two motor bearings. 1.574 dia OD on a 0.656 shaft.

BEARLING.JPG


I can bring the rotor to you if that's more convenient.

Let me know.

Thanks,

Craig
 
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@BMW Rider got the bearings off for me. Thanks Ed. They made a distinct pop coming off which now has me wondering if I can install new ones without having access to a press?
 
You could probably use a socket or piece of pipe and a swing press
Even just a punch on the inner part of the bearing works too
 
You can just drive them on with a hammer and a punch or as mentioned a socket that is a close fit to the inner race. Just don't hammer on the outer race.
 
BMW Rider said:
You can just drive them on with a hammer and a punch or as mentioned a socket that is a close fit to the inner race. Just don't hammer on the outer race.
Click to expand...

Were both bearings turning freely once we had them off? Do you recall? While cleaning the grease out of the front bearing it seized and refused to turn. Not sure but maybe I introduced some grit or swarf while cleaning it. It sure feels rough now.
 
YYCHobbyMachinist said:
@BMW Rider got the bearings off for me. Thanks Ed. They made a distinct pop coming off which now has me wondering if I can install new ones without having access to a press?
Click to expand...
The pop was likely a bit of minor surface corrosion/rust breaking loose. Sometimes they creak or make another noise.

Putting the new bearing on "should" be easier. As @Chicken lights said, put the shaft in the freezer and heat the bearing. The thermal difference should allow the bearing to slide right into place.

A trick for warming the bearing is to perch it on top of an incandescent light bulb for a few minutes. Use a glove to pick it up. DAMHIKT.

Craig
 
Just a little emory cloth rub to the shaft should clean up & facilitate a smooth mounting...ohh and, don't heat a sealed bearing, a very fine line between "just enough & too much" heat to the rubber sealing lip...had occasion to use dry ice on cat axles & torch heat (field expedient but much care required) on "open sided" bearings to mount final drive bearings...even then, big double handed full swing "chicken presses" often required to complete the job...this brings another point up if using the heat method...time management is crucial to getting the bearing seated fully, if it cools & shrinks to the shaft before reaching full depth, you cut the bearing off and use another one because the first will be destroyed before it moves again...ask me how I know this.....
 
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