BC

I now have the bearing races stuck on the steel hubs, and the outer races are not coming out of the uprights on 3 units I am trying to redo. (4th on its way from ebay).

So the outer race is a weld a bead and it drops out? Even on a race as big as the rear wheel bearing?

Vilhuer

Put whole thing in oven and heat it up. They will just drop out once temp is what WSM says it needs to be. 120 celsius IIRR.

BrianG

+1. This has worked for me, as well. Inner races or outer.

outbackgeorgia

Oxy/Acet torch, quickly heat the race, the axle will not heat up much. When red hot the race will drop off the axle. Done this many times on rear axles back in the day. Axle/bearing interface prevents axle from getting too hot.
Mapp torch is useless for this method, won't heat up the race quickly enough, gets the axle hot.
Dave

dr bob

Brendan--

Since you have several, and they are not mounted to cars, consider getting a bulk deal from a local auto machine shop to do them all for you with a press.

BC

Yeah. It may have to go that way.

I have today to play with them. I don't think Clare wants these in her oven.

Vilhuer

She'll change her mind when you tell you're just saving $$$. Just exaggerate a little and say doing it in shop cost same as pair of good quality high heels.

Wisconsin Joe

That only works if she can use the savings to go and buy said pair of heels.

On a more serious note, second hand ovens are pretty cheap. A friend of mine did that. He was doing a pretty serious restoration and was painting a lot of smaller parts.
He decided that he wanted to bake the paint for a better finish. He found one locally for next to nothing.

dr bob

BTDT, along with a diswasher (great parts washer), plus the dedicated garage clothes washer and dryer. Our construction contractor grabbed the dishwasher and oven from a high-end remodel he's doing now. Installation (wiring/plumbing) is sometimes an issue, especially for a gas oven. Electric oven plugs into my welding outlet.

James Bailey

Dr Bob can I come LIVE in your garage ?? sounds really, really nice !

BC

I am not good at welding yet. The idea is to weld the inside of the bearing in the upright (as our Mike Simard calls it) so it gets hot and then it comes out after that more easily? There is such a small ledge to push on from the right (correct) side, it would have to be a perfect sized pressing piece.

outbackgeorgia

Doesn't anyone have a torch anymore? Easy peasy, just heat the race to red, will fall off.

dr bob

So the race can't expand much as it's heated by the welding. But as it cools, the new weld metal does shrink. The weld doesn't have to be pretty, but it does need to be fast so the heat doesn't migrate much to the aluminum.

The bearing is a double-row ball bearing. With the inside-half inner race and ***** in place, you can push on the inner race to move the outer race.

The B90 tool has an assortment of bearing driver pieces, including one that fits inside the lip in the upright but still contacts the outer race. That lip isn't very wide. If you don't have access to the B90, the Harbor Freight front wheel bearing tool has a similar assortment of the little driver/adapters. It's missing the critical horseshoe piece used to pull the stub axle from the bearing, but otherwise has the pieces needed. Around $100 on a sale flier recently for that set.

Again, for a one-time effort it's easier/cheaper/safer/faster to let an auto machine shop do it for you. It just isn't as much fun.

BC

I have four of them. I'm hoarding parts again....