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  #1  
Old 10-30-2023, 05:32 PM
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Transfer case rebuild NV125. Bearing question.

So I'm rebuilding the transfer case and filming a video, in case anyone would be interested.

I just got this bearing kit, and the bearing seems different from the original.
https://www.ebay.ca/itm/285416192375...mis&media=COPY

It doesn't look the same.





OEM bearing is SKF, and replacement bearing is Nachi, which I guess is a good company as well.

The bearing number is 6013 but I guess the suffix is just as important.

OEM bearing:
TN9 Glass fibre reinforced PA66 cage, ball centred

Ebay bearing:
C3 Radial internal clearance greater than Normal

For those who know anything about bearings, can I install the bearing I got from eBay? Or should i return the kit and try to obtain exactly identical bearings?

I really don't want to nilly willy install the wrong bearings and have to drop the transfer case another time to redo the job...

Any help highly appreciated!!
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  #2  
Old 10-30-2023, 06:00 PM
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Interesting. Post how the rebuild goes. The company is down the highway from Austin.
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  #3  
Old 10-30-2023, 06:36 PM
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Nachi is an outstanding bearing company.
Nachi bearings are inside many Volvos...
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  #4  
Old 10-31-2023, 05:09 AM
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I was only concerned by the different suffix rather than the company.
https://www.skf.com/in/products/roll...gnation-system

It seems all these designations mean something, and I'm not sure if they'd be any issues, for example C3 - clearance greater than normal.

I took apart the old skf bearing, and saw that the balls are held by a plastic round clip, that's why the bearing looked closed or sealed at first sight, and looks different.
The nachi bearing has the balls centered in a metal clip on both sides. Maybe it's even better.
The nachi bearing spins a lot longer by hand, that's for sure. It's also a lot louder, but maybe that won't be noticeable when it's swimming in transmission fluid...


I
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  #5  
Old 10-31-2023, 12:08 PM
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The OE bearings in my LWX500 case were C3 bearings, so I think you'll be fine.
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  #6  
Old 10-31-2023, 04:33 PM
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Thanks for the info, I'll use it then.

Was trying to change the output flange seal and ended up cracking the case lol.

remove duplicate email addresses

Didn't know how to remove the gear so tried pressing it out. Turns out there's 2 circlips on each side of the bearing. So looked like I should've removed the seal first, then the smaller circlip, and then presses out the gear/nearing.

Now will need to go to junkyard to pull another TC.
What a pisa lol...
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Old 10-31-2023, 06:21 PM
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Oh shit. Not good.
Subscribed.
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Old 11-01-2023, 03:24 PM
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On YouTube, there is a nice video on BMW TC rebuild.
You may want to watch that first prevent all these mishaps.
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Old 11-01-2023, 04:36 PM
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Do you have a link? I couldn't find a single video where the output flange side was removed.
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Old 11-01-2023, 05:06 PM
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Subscribed! A chain replacement is on my longer term list, but I could just buy an eBay t-case and do a full rebuild thanks to these threads and videos.
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