has anyone ever seen a new bearing with schmutz like this on it?

[englertracing]

brg4.jpg

brg3.jpg

brg2.jpg

brg1.jpg

This is the second set of bearings I have received from the oem supplier like this.
they were in sealed baggies this way, no rust on the metal backing or anything like that.
Doesnt really feel raised, but wont come off

brg5.jpg

after scrubbing one with scotch bright

The weird thing is that it is in the same places on every bearing.
The first set I ever bought didn't have any of this junk on it.
Does anyone know what this stuff is?

They get 37$ per half, and this is how they look
Thanks,
Aaron.

[mag2555]

Hard to tell even from the pictures but it looks like a build up of the break in coating

[econo racer]

No I have not. No way would I install that. What is the application size needed etc. Maybe I can help.

[Roundybout]

If they were stacked up during the manufacturing process it almost looks like something got down those holes and etched the surface? I wouldn't use those.

[Newold1]

Those bearings are junk. Take or send them back and get some decent bearings!

[englertracing]

I don't know where else I could get these. They are for an Aprilia motorcycle. I think Aprilia is Italian for bastard.
the dimensions are 41x38x18

[Keith Morganstein]

brg4.jpgbrg3.jpgbrg2.jpgbrg1.jpg

This is the second set of bearings I have received from the oem supplier like this.
they were in sealed baggies this way, no rust on the metal backing or anything like that.
Doesnt really feel raised, but wont come off

brg5.jpg
after scrubbing one with scotch bright

The weird thing is that it is in the same places on every bearing.
The first set I ever bought didn't have any of this junk on it.
Does anyone know what this stuff is?

They get 37$ per half, and this is how they look
Thanks,
Aaron.

Yes I’ve seen similar many times on other imported stuff. I used them, It doesn’t hurt anything.
I wouldn’t recommend scotchbrite on bearings. I know it’s done, but it embeds abraisive into the bearing material.

[Walter R. Malik]

I don't think that is anything ON it but, an over-plating job which did not cover the entire surface.

[stealth]

Send them to calico and have them coated...the prep will clean that right up

[englertracing]

Called the distributor,
said they all have it. ALL OF THEM
looks like the options are,
1 send it to calico
2 run it

[Geoff2]

The 'spots' looks like a chemical reaction, corrosion maybe. Possibly caused by moisture during storage.

[econo racer]

Do you have a part # ?

[englertracing]

The 'spots' looks like a chemical reaction, corrosion maybe. Possibly caused by moisture during storage.

It can appear that way, but they all have it in the same spots, at the parting line, and adjacent to the oil holes. And they were in hot sealed bags.

Do you have a part # ?

OEM Aprilia Bearing Half-Shell, Green -9150324

[rp930]

Based on the line running through them they were jigged and measured. I’m not sure I’d use them though.

[Truckedup]

I sent a photo of the bearing to a bike riding friend in Scotland who is a automotive bearing engineer...See what he says...