Damaged roller bearing outer race machined in-situ

[badabec]

Hello, I made the mistake of examining the rear suspension arm bearings on my Citroen DS. Lifting the arm it fell a little notchy.
Now it is apart I can feel some brinelling on the outer race of the tapered roller bearing. The problem is that the outer race is machined directly into the hub, there is no outer race to drift out.
Most of the damage is to one side of the hub. The hub mounting is by three bolts, unfortunately they are asymmetrically place, so I can't rotate the hub.

New parts are not available for a 1972 car. I intended to renew the caged rollers, plenty of grease and put it all back together. The total movement of the suspension is about 30 degrees. It isn't a high speed application (maybe at 90mph over Belgian pave).

Any other suggestions?

Thanks

 

[Brad93]

Pictures?

 

[badabec]

Whoops

 

[Brad93]

Are you sure that's not an insert? Looks like there is a join so to speak

 

[addjunkie]

Are you sure that's not an insert? Looks like there is a join so to speak

I agree, bottom picture Looks like a normal bearing shell. Stick it in the oven on full blast for a couple of hours. I suspect itll come out quite easily. Or run a ring of weld around the inside, for the quick no return option.

 

[frank horton]

or change it for a later one....
I seem to remember in the distant past replacing those bearings....
I cant remember now but there's a brill spares place with pictures in Holland...

 

[8ob]

Does look like they are pressed in, even if they are not they could be ground out on a lathe with a tool post grinder and an equivalent pressed in.

Shows the as separate tracks on this drawing

Part number	Description
D 422-6	nut with grooves, screws on D 422-96
D 422-79	screw that bolts D 422-96 to chassis (3 at each side)
D 422-96	outer part (body) of rear suspension arm bearing
D 426-3	nut on inner side of rear wheel bearing
D 426-15	distance piece between inner and out rear wheel bearing
D 426-99	washer on inner side of rear wheel bearing
D 437-1	rubber buffer (end stop) of rear suspension
620051	inner rear suspension-arm bearing​
620053	outer rear suspension-arm bearing​

 

[zzr1200]

Looking at the pictures at the bolt pattern end of the tube there does appear to be an outer bearing track pressed in (although not listed}, the other end appears to have welded area that has been machined at the very edge. Which makes me wonder if there is a outer bearing track that has been locked in by a bead of weld (possibly a bad/oval tube/worn fit?) which has then been machined to clear the bearing cage/rollers.

The outer material surface looks like a badly machined or contaminated material, possibly a combination of weld and bearing ground back or turned back?

I agree with 8ob there must be an outer bearing track, if for no other reason the cost of designing and manufacturing a complete assembly would be prohibitive...Citroen probably sold the complete arm assembly including the outer tracks, the same as Land Rover try to do with their hub bearing units....

PS. Take the inner bearing numbers to a bearing suppliers and ask what outer track sizes are available for that bearing and do some measuring then decide if you want to progress further.

 

[caprinut]

There is no way that bearing could have been ground in situ, to harden the whole assembly but for a bearing which can pressed in and out would be too complex.

Bert

 

[brightspark]

Whoops
View attachment 342567View attachment 342568

thats the outer ring of the taper roller bearing . the hub is cast steel and the bearing ring hardened steel pressed in could slit it open using a dremmel with a slitting disk in at an angle and prise or tap it out. ive done them before on bearings

 

[winchman]

Looks to me like a Blind bearing puller would go behind the lip and pull it out?

 

[armalites]

Looks to me like a Blind bearing puller would go behind the lip and pull it out?

It looks like a hollow tube so I doubt a blind bearing puller would be needed.

 

[winchman]

It looks like a hollow tube so I doubt a blind bearing puller would be needed.

Ah yes I want sure

 

[Paul.]

The bearing in the first picture is possibly a flanged cup bearing, if so then as said above, 3 or 4 short runs of weld round the inside will shrink it and they usually just fall out

 

[8ob]

As above weld makes them let go, I weld a bit of scrap bar across them while I am at it. You can then use a tube/bar and hammer to drift them out, did these 4" hub bearings today using the same method..

 

[Windy Miller]

Run a file across the side of the tube. You’ll soon know if it’s hard enough to machine a bearing face on.

My guess is that the inner races are pressed in.

 

[Brad93]

I had a look at this today and it done piece machined, hardened then ground

 

[Pete.]

A vile trick for any manufacturer to play. The steering relays are the same, races integral to the pivot.

 

[Johnnybravo]

Make a new one with replaceable outer races

 

[500e]

https://www.citroen-traction-avant.com/en/populaire/products/THGrp_Cod/DS-ID/TGrp_Cod/DRAAGARM-ACHTER/PageSize/0

Rear suspension arm bearing kit

Bearing and seal set for 1 rear suspension arm where it mounts in the chassis We are finding more and more of these rear arms have play in the

shop.citroenclassics.co.uk