Calgary - Looking to borrow a bearing puller

[YYCHM]

Need to pull two motor bearings. 1.574 dia OD on a 0.656 shaft.



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

Let me know.

Thanks,

Craig

 

[BMW Rider]

I probably have what's needed for that.

 

[YYCHM]

I probably have what's needed for that.

PM sent

 

[YYCHM]

@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?

 

[Chicken lights]

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

 

[YYCHM]

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

What's a swing press?

 

[Chicken lights]

What's a swing press?

Hammer

You could also put the shaft in the freezer overnight, and heat the bearings in the oven when the missus isn’t looking

 

[YYCHM]

Hammer

Ahhhh, the BFH, I know it well LOL.

 

[BMW Rider]

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.

 

[YYCHM]

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.

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.

 

[Brent H]

@YYCHobbyMachinist

Not sure but maybe I introduced some grit or swarf while cleaning it. It sure feels rough now.

Pretty much indication of a crap bearing.

 

[trlvn]

@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?

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

 

[BMW Rider]

I don't recall which one it was, but one of them felt like it had a rough spot.

 

[historicalarms]

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.....