I am assuming the pic attached is what's called spun bearing damage. Can someone tell me what is the cause and what can be done about it? Is the knuckle/spindle considered bad and discarded or can it be used?
Spun bearing damage and what can be done about it?
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Kendog 170
Let the boy go !
Watching. I may have the same issue unless spun in the hub. Haven't dug into it yet. 
junkyardhero
Well-Known Member
can't really tell, need more and better pics.
sometimes these things are hard to ascertain via photos. i mean, bad ones are generally clearly bad but marginal ones can be difficult to spot.
sometimes these things are hard to ascertain via photos. i mean, bad ones are generally clearly bad but marginal ones can be difficult to spot.
This is the worse one I have seen. By that I mean deepest. There is a distinct grove in the metal. The pic is the best I can get.
Do you know what it's caused by? Bearings too tight or too loose?
junkyardhero
Well-Known Member
without a better picture, that appears to be where the inner race of the bearing indexes the pointy thingy.
there is *some* room there and it may be clear of it, but you'd need to fit up a bearing and check.
you may be able to get away with dressing it down and running it.
too loose, too tight, bearing failure due to lack of grease could all be contributing factors.
hows the race in the rotor look? that would probably tell the rest of the story.
there is *some* room there and it may be clear of it, but you'd need to fit up a bearing and check.
you may be able to get away with dressing it down and running it.
too loose, too tight, bearing failure due to lack of grease could all be contributing factors.
hows the race in the rotor look? that would probably tell the rest of the story.
The bearings were replaced by previous owner after the damage. No info there. The width of the groove is same as inner race. To me, the inner race is turning and not the bearing to create the groove.
junkyardhero
Well-Known Member
to clarify:
magenta oval: can likely be dressed down, not as important as lime rectangle
lime rectangle: where bearing rides. more important. anything more than minimal imperfection results in swift bearing expiration and probably a fiery death upside down in a ditch somewhere.
magenta oval: can likely be dressed down, not as important as lime rectangle
lime rectangle: where bearing rides. more important. anything more than minimal imperfection results in swift bearing expiration and probably a fiery death upside down in a ditch somewhere.
dano
Evil Handy Man
Likely from lack of lubricant, the cup seized to the cone and the cone is what spun on the spindle to make the wheel go around.
Its a front spindle that holds the wheel on that steers the car. I would replace it unless you cannot find one. What model car and spindle is it ?
Spindle from 73 Challenger.
That is 3 years only. 70 T/A - AAR and 73-74 e body only
I got the shaft when I purchased this junk. Sorry to say it was a FABO member.
Did the inner race spin on the hub surface? Does the bearing feel loose whey you slide it on the hub?
An old semi truck and trailer trick is to take a center punch and make divots on the surface where the inner race goes. It will raise the metal and hold the inner race from spinning on the spindle. It sounds Mickey Mouse but it works.
yes it appears inner race spun on hub surface. Bearing feels tight on spindle.
This must be a common problem if that's how to fix it. Have found multiple shops for spindle repair.
Inertia
Well-Known Member
I'd take it to a machine shop and see if they think they can successfully sprat weld that.
I have had both trans input and output shaft bearing surfaces spray welded, and a diff pinion.
New or different would be preferred.
I have had both trans input and output shaft bearing surfaces spray welded, and a diff pinion.
New or different would be preferred.
I agree with TMM, , I've repaired more spindles than I can remember on semi trailers . If the bearing is tight on the spindle thats a good thing. Maybe just hit the collar back there with some emory cloth , and send it on down the road. . Yea , of coarse you have to dress it down and see how it all feels and looks when working it over.
It is easier to replace it, but a machinist can turn down the area and make a sleeve to bring it back to standard.
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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After divoting, stud and bearing loc held it good on one of my projects years ago.
I8 l
Kendog 170
Let the boy go !
https://www.amazon.com/dp/B09VHBQ8W3/?tag=fabo03-20
Agree with Mike. You can also clean surface and add This Loctite after punching. The race will stay put until you warm with a torch if you ever need to change it. This is the problem I think I have but yet to investigate as I posted earlier.
Dartswinger70
Well-Known Member
Kind of like "Knurling"
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