Front Stub Axle Issues

find somebody else that knows what there doing.......

251-498-625 I think I need.

So, I contacted Julian at partsemporium.co.uk and it seems all of his have the same problem. He agreed its not a good thing to fit if the bearing spins freely.

Glue! Blimey OK tellytubby, good idea. I worry that it might not sit perfectly in place but i guess if I mounted it before the glue sets and got it into position it might help... hmm food for thought

The plot thickens, I am now even more confused.

Edited by williamkay - 07 Jul 16 at 11:48

Based on my past experience, a couple of things can happen here.

Stub axles can wear, due to bearing fatigue over time which can allow the outer race to move on the stub axle.
The result is marginally undersized stub axle diameter. Solution is engineering adhesive to lock the bearing in place on the stub axle. Apply during assembly, and it will go off once it's all built up. There's very little rotational force on the outer race once it's loaded, as the bearing is the 'slip point'. Engineering adhesive is widely used in my industry to lock bearing races in place.

Second scenario is a tight fit

Usually caused due to surface defects or pickup sometimes due to almost invisible corrosion, sometime due to mechanical abuse (not suggesting this is the case here!). Solution is a light rub over with a fine crocus or wet and dry (dry) paper. A light/very fine file can be used to work on high spots. Clean scrupulously afterwards.

I've had both scenarios with the latest needing bearing adhesive - that was six odd years ago and she's still going strong.


Edited by Chappy - 07 Jul 16 at 21:19

Same process, heat it up with a torch or punch it off with a drift or a set of bearing pullers if you can get your hands on some

Yep, thats what I thought. The outer ones should spin with the wheel and I had to punch them into the hub for a snug fit. The inner ones should not spin and should sit nicely on the axle, not spin, but also not be forced on. Anyway thanks for all this, I am making progress, it will be sorted one way or another. Will

Red Westie wrote: Bromy wrote: The bearing is an iterference fit on the shaft, it should not just slide on, ideally you need a bearing heater which will heat the inner race causing very slight expansion to slide on the shaft then shrink back to a snug fit once cooled. Other ways include dropping the bearing in boiling oil for a few mins or the crude way, hammer and drift making sure you only hit the race The 'outer race' of both inner and outer bearings IS an 'interference fit' also called 'press fit' These 'loose' races are pressed or punched in to the disc. The inner 'fixed' race is part of the taper roller bearing and is NOT an interference fit. It does have a clearance to the stub axle, albeit a small one.  Spinning inner bearing races can wear down the stub axle resulting in excessive clearance. Martin

Your post seems to contradict yourself. I think the confusion came from myself calling the 'inner' outer race the inner race

Edited by Bromy - 14 Jul 16 at 13:38