Anyone got a blind bearing puller they are willing to lend?

[birdhandler]

I need to remove a 30mm bearing race from the steering head none of my usual brtal methods will work
I live in papakura, auckland
Any help would be appreciated
Thanks

[Ixion]

Arc welder is the only way to get those muvvas out

[paturoa]

Arc welder is the only way to get those muvvas out

How would a alloy frame handle that?

[paturoa]

Can't you get a rod onto it from the other end of the stem?

Is this any help?

http://www.garagenight.tv/ep-5-repla...head-bearings/

[R1madness]

Yep Ikons arc welder idea is spot on. Run a bead of arc weld around the bearing surface and let it cool. This will shrink the bearing allowing it to just about fall out. Just make sure you disconnect the battery, cdi, fuel injection controler before arc welding.

[CookMySock]

Yep Ikons arc welder idea is spot on. Run a bead of arc weld around the bearing surface and let it cool. This will shrink the bearing allowing it to just about fall out.

This is an old trick and it works very well.

Smash the inner race out any way you are able. Larger hammer and and solid punch works quite well. You must wear substantial safety goggles doing this - the punch and bearing will shed chips of glass-hard high speed steel.

Once you have the inner race left, use a small welding rod and lay a continuous bead around the inside of the bearing outer. Do it in one go.

Thirty seconds later you should have the bearing outer in your hand. Weld on the bearing inner - don't touch anything else with the rod tip. It's quite curious to see it happen.

Steve

[birdhandler]

thanks for the advice
does this work with a mig welder ?
Garage night is great will check bac periodically
Cheers

[Ocean1]

does this work with a mig welder ?

If you can get close enough to aim properly and get an actual weld bead (although it don't need to be pretty).
Doesn't need much, three 10mm stitches spaced around the ball/roller face will do it.
No hurry to pick it out either, wait for it to cool some.

PS: smear some crayon over any exposed surfaces around the bearing to stop the splatter sticking.

[Squiggles]

grind em out

[CookMySock]

grind em out

Generally used when you cant get in there with the grinder. Also used to remove clutch thrust bearings.

Steve

[Flip]

This is an old trick and it works very well.

Smash the inner race out any way you are able. Larger hammer and and solid punch works quite well. You must wear substantial safety goggles doing this - the punch and bearing will shed chips of glass-hard high speed steel.

Once you have the inner race left, use a small welding rod and lay a continuous bead around the inside of the bearing outer. Do it in one go.

Thirty seconds later you should have the bearing outer in your hand. Weld on the bearing inner - don't touch anything else with the rod tip. It's quite curious to see it happen.

Steve

Sorry DB but bearings are not made of high speed steel and why do you want to smash a inner race of a taper roller bearing out, the inner is not retained in the bearing and just falls out.

Just be carefull laying the weld you don't weld the inner race into the steering head.

[Ixion]

Um, OP , do you mean remove the inner race of the sterring head bearing from the steering stem on the triple tree? Or remove the outer race from the recess in the steering head? I read it as the latter but now I'm not sure.

[Flip]

grind em out

I have seen a very keen young fitter take a grinder to a mill shaft bearing and turn a 5 tonne $20,000 shaft to scrap doing this.

Besides where are you going to get a grinder with a wheel smaller than 30mm, unless you mean a die grinder in which case you have a lot more patience than I do.

[Flip]

Um, OP , do you mean remove the inner race of the sterring head bearing from the steering stem on the triple tree? Or remove the outer race from the recess in the steering head? I read it as the latter but now I'm not sure.

Good point. I am assuming that its a "30mm" outer stuck in a hole and not the inner stuck on a shaft.

[CookMySock]

Sorry DB but bearings are not made of high speed steel and why do you want to smash a inner race of a taper roller bearing out, the inner is not retained in the bearing and just falls out.

Split hair much? In this case it falls out. Doesn't matter what they are made of. Take a large and heavy hammer, a solid punch, and a bearing, and bash it hard, and you will get shards. Wear safety glasses or pay the price.

Steve