threaded bearing

[Richard07]

You can remove a bearing race without damaging the shaft if you cut it like this. Leave the thinnest bit of material behind and it'll still spring open enough to pull off easily. You could acutally smsh out the cage, remove the balls and outer race, put your cut on the inner race then re-assemble the bearing with the balls spaced out and use the outer to pull it off.

Done, did it like this, too tight to get the welder in. Ground the inner race till it was close to the shaft, mole grips on it and gave it a twist, popped streight off. Spent more time masking up round the coms and windings than i did grinding!
Thanks for the help lads :-)

 

[Bill Edwards]

That's the easy way to do it.

However, many people can miss the obvious when doing these things. Although it's never desirable to mark the shaft, in nearly all cases a little nick in a shaft makes no difference to anything. It isn't like it has to be an oiltight fit, and a little bit in one place won't make any difference to the bearing fit or support.
So, generally speaking when doing these jobs you can relax a little.

 

[Wallace]

Now do the front bearing!