Hello folks.  I'm rebuilding steering clutches on a D4 7u.  I will replace pinion bearings also if necessary. I am hoping to find high quality bearings. The two bearing caterpillar part numbers are, 3B3968 outer race and roller assembly, the inner race only for this bearing assembly is part number 3B3969. The other bearing is a 3B3966 outer race and roller assembly. Or 3B6967 for the inner race only. I am wondering if anyone would have quality bearing part numbers, maybe timkin or Hyatt, for 3B3968 and 3B3966, any help appreciated. 

I have (literally), a ton or more of NOS bearings. Many/most are from boxes marked "CATERPILLAR". Many boxes have deteriorated to a point CAT#s can not be read. Unfortunately the bearings inside these boxes are never marked CAT. They are marked Fafnir, Timken, etc. etc.. If you could find any cross #s I will be watching or PM me.

Plug your Cat bearing numbers into the interchange "Caterpillar x-Ref" here...
www.tractorparts.com/interchanges.php?table=Cat_Part.
 

Thanks Old Magnet, that site is GREAT! I keep it as a permanent tab on my computer. That info has helped me hugely. It helps me cross reference any cat# to RPB ( replaced by) cat#s. It also helps me greatly in finding out just exactly what any unknown part is referred to in the Cat literature. But, I can not figure out how to convert a Timken Bearing in a CAT box (with no legible Cat part#) back to the Cat#. I do not see Timken, Hyatt, Fafnir, etc., listed on the Tractorpartssupply site listings list at the top of the page. Am I missing something in that listing?

If you can come up with a set of books from I.B.I. International Bearing Interchange they will have all the bearings cross referenced . 
These are not published anymore but if you can find a set they will solve your dilemma .
Good luck
Bob

Thanks bluox I will look around for these books. I did a couple part number searches where om suggested at general gear site, also looks good for cross referencing. Floyd green, I plan to rebuild steering clutches and check transmission and main clutch bearings on d4 7u. I will work on sending you a pm. I think I'm just a few hours drive away from you.

I posted this information for Mr. Green who has a lot of bearings to look up.
These books are not easy to find but, in his case, would be worth it.
For everyone else they just need to get ahold of a parts store and they have all of the bearing interchange on their computers.
Bob

I realized that after I had made my last comment. I was reading this post backwards from your last comment and and assumed you were saying this to me. I don't mean to step on anybodies toes, I just misunderstood the way this discussion was going.

You aren't steeping on anyone's ,it's your post.
As I pointed out if you are looking for replacement bearings take your Cat part number to a bearing or auto parts store,
they have a bearing cross reference in their computer.
This part was directed at you.
Bob