The Stovebolt Site Forums The Shop Area Driveline Diff carrier bearings search

I am doing a diff for my truck .

I have a spare diff head that I think is from a '55. The one in my truck is from a '54. These should be the same item.

I am looking for the carrier bearings . KC11445Y. I have looked at several sites , but they are offering a taper roller replacement. I cannot see how an item engineered for barrel roller will accept a taper roller and not subject the taper bearing to undue point loading.

Can someone please help me locate the correct barrel roller bearing .

The carrier bearings are roller type. They fit inside the bearing caps and are preloaded. These bearings were roller type as far back as 1940. Perhaps earlier.

The roller part is pressed onto the two end of the carrier and the races are placed on them when it is installed into the housing then are preloaded with the adjusting screws.

Dusty,

Might this be it?

Thanks for your thoughts SWEET, I know what type of bearing I am looking for (I have it in my hand) I just cannot find an appropriate supplier.

Tim, thanks for the link. That is the bearing I am having the problem with.

The one shown in that link has not got the barrel shaped rollers of the original fitment style.

When replaced as a set,(cup and cone/bearing and race), the tapered roller bearing will work fine as a replacement for the old style barrel shaped bearing.

Do you have a photo of this bearing?

You have a pic on your gear swap . pic #21 shows the original barrel roller and later pic #60 shows you have replaced them with a standard taper roller set.

Dusty, Ive never seen barrel rollers used in a rearend before. I do believe those are tapered roller bearings originally and both pictures referenced above look like tapered rollers to me.

Jeff

Dusty is right, Chev used barrel rollers on the diff side bearings. They also used them on the worm thrust bearings in steering boxes, and most likely in other places I would need to stop and think about.

Dusty

The bearings that I have in my rear end have been there untouched for 6+ years with over 10,000+ miles on them. I have not had any issues.

I am sure that if you install these in your truck and follow all of the installation directions for pre-loading, you too will have many many miles of trouble-free driving.

If anything, the roller type bearings should perform better since any point load applied to the races are distributed over a greater area thus reducing wear at the point of contact. Just like installing roller bearings in the front wheels versus the original style.

In the end, the bearing folks have thousands of hours in research and testing. If the original barrel type bearings performed better, you'd be able to find them.....