Rear hub bearings - fresh thinking or already been done?

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Re: Rear hub bearings - fresh thinking or already been done?

Postby Trundler » 02 Jun 2013, 13:17

The taper roller solution does sound good but will need some considerable re-engineering I suspect.

What are the options (if any) for using different bearing carriers, hubs etc from other vehicles?
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Re: Rear hub bearings - fresh thinking or already been done?

Postby AdrianC » 02 Jun 2013, 13:44

lloydy wrote:14" rear hubs are €362
Strangley 14" hubs for abs equipped vans are €201.75


Obviously, an ABS van would need ABS hubs, so the sensors can be mounted.

But is there any reason why a non-ABS van couldn't use ABS hubs...?
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Re: Rear hub bearings - fresh thinking or already been done?

Postby Trundler » 04 Jun 2013, 11:15

Has anyone got any pictures of the offending parts? I can't quite get my head around how all this goes together... :oops:
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 19 May 2015, 14:06

This one is getting some fresh thinking applied to it again, might have a workable upgrade on the bench. No solution for really knackered bearing carriers other than the obvious (lots of welding and re-machining) but a double-taper bearing conversion looks possible to my eyes.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby toomanytoys » 19 May 2015, 15:04

So..
What bearings are an option?? T4 ones?? what diameter are they inside? (to take the stub axle)
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 19 May 2015, 16:33

Standard SKF sizes: 35 bore, 62 and 72 OD. Would need a shimmed spacer to achieve preload (0.05mm typically) and a fixed abutment sleeve to give the outer bearing's outer race something to pull up to, but otherwise not a big deal.

PS Bearings should be cheap enough, standard metric industrial sizes to ISO 355
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 19 May 2015, 17:25

Might even be able to machine a circlip groove to seat the 62mm outer brg.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby Jim San » 19 May 2015, 17:40

I like the sound of taper bearings, much easier to change when needed.

I feel my housings are on borrowed time as i changed them after Devon last year - we'll see.

Sleeving the housing is an option but - i did see a process of friction welding 2 shafts together, spin up the faces until white hot then instant stop. Interesting process, wonder if it could be used to insert and fix a thicker sleeve in position and then machine it out to correct size. (just thinking out loud)
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 19 May 2015, 17:56

Friction welding is a high-volume production technique, i dont think it would work in this application.
You would still have to re-set the bearing preload by swapping shims when replacing them, its not the same as a 2wd front hub and the nut would still need torqueing up to 450Nm.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 21 May 2015, 13:13

I have just ordered a couple of each bearing, about £15 each. The outer races are about 15mm wide, and each assembly is a nominal 18mm overall so there shouldn't be any problems resulting from that.

More when it happens.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby dave friday » 21 May 2015, 21:38

Could you use two anular ball race bearings to set the end float [in place of the inner ball bearing] and keep the outer roller bearing?
Of course you'd need shims to set the pre-load/end float.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 21 May 2015, 21:45

There isnt the length of bore at either end of the housing to fit any more bearings, the forging is udercut/releived in the middle.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby dave friday » 21 May 2015, 23:35

Yes of course...what about cutting a thread into the housing where the circlip goes and a suitable fitting to screw into it,this would hold the ball bearing in place.
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Re: Rear hub bearings - fresh thinking or already been done?

Postby hugomonkey » 22 May 2015, 07:34

i would be more than happy to donate a few hubs for experimental purposes :ok
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Re: Rear hub bearings - fresh thinking or already been done?

Postby silverbullet » 22 May 2015, 07:55

Ta Jason. I will need a few to get some useable ones (not dead) and then make a couple of axle sets to test.
I think the principle is sound enough, might have the bearings by Tuesday then I can do a little mock-up and see if it looks good.
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