Disk break kit, new spindles have galling?

[Eskamobob1]

Hey guys,

I got a disk break kit with a 2.5" drop and the new spindles have some galling on the upper bearing seat. Are these safe to use? My previous spindles (or at least the one I didn't jack up by accident) have 0 galling at all with darn near 100k miles on them.... you can feel it with a finger, but just barely. My gut reaction is "no go", but am I over reacting?

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'74 - front disks/lots more work to do

[raydog]

Just get rid of any high spots. The bearings have their own races to ride on. Looks like imperfections in the metal.
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[busdaddy]

That's not "galling", it looks like a flaw in the raw part before machining from here, are those cast?

Run them if you dare, personally I'd return them and shop elsewhere...
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[Eskamobob1]

[Starbucket]

Sure it's only one wheel you have 3 others just kidding if you cant feel it with your finger nails (raised not pits) it's fine, remember "if it don't fit quit and send it back.

[infiniteLoop]

The bearings are not a press fit to the spindle so they directly ride on it.

[Matt Wilson]

You could swap your disc break kit for a disc brake kit
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1972 Standard Beetle
1969 Baja Beetle

[ashman40]

I would not be bothered by those marks as long as the inner bearing will slide over the spindle and fully seat against the flange. The bearing does not spin on the spindle. The ID of the bearing slip fits over the spindle. The OD of the race is press fit into the drum/disc. As long as the bearing seats fully and is not a loose fit, run it.
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AshMan40
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'67 Beetle #1 {project car that never made it to the road }
'75 Beetle 1200LS (RHD Japan model) {junked due to frame rot}
'67 Beetle #2 {2019 project car - Wish me luck!}

[stevebaz]

looks like rust pits to me. I would run them instead of the hassle to return.

[infiniteLoop]

[vamram]

The rollers in the bearing are what spins...I think.
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[ashman40]

[infiniteLoop]

Thank you for the in-depth response. I thought they were like motorcycle bearings because of the fact that spindles can go bad. I have one car with a marginal spindle and another with a shot one.

I would think it would be too problematic to rely on that design because if not machined right, the bearings can bind before the inside races made adequate contact. For example, while trying to set preload, if the inner race contacts the spindle first, the preload will be too loose. I'm not seeing a fool proof way that it gets equalized some how. The machining has to be right on.

[infiniteLoop]

Okay. I was thinking that the taper of the spindle was for a wedge type of fit but
it's just for weight savings.

I would have thought that at least a slight interference fit would be machined into the race and the spindle. I'm thinking that if the races do not actually fit perfectly with the spindle, when weight is put on the tire, that pressure is made between the top of the race to the spindle and the bottom of the race on the other race. Or basically it is allowed to cock which takes up more distane and hence keeps the race from spinning on the spindle. Regardless I think there has to be some other force involved. That's just my opinion.

[ashman40]