roller bearing , the one inside of flywheel disc... I have the cat numbers, but would anyone have the after market part numbers for inner, outer, and roller pieces?... I though i was ready to go together but i was advised that i better change the one i have or i will be sorry later on....

Post your Cat part no.and/or precise dim. as bearing may be aquired by size.

Don't know what the non-CAT numbers are, but I got mine a couple months ago from my local CAT dealer.
Ray

Hi Team,
my 22 P/Book shows 1B3738 Bearing (outer race and Roller assembly) which is a Hyatt SC-403, made up of Hyatt parts outer race--SRA-403 and Roller Assem--OR-304.
The inner race is a V-226 or 0V0226 in new P/No format. Sorry have no equivelent for this.

It turns out that a 3J-5J D2 uses the same clutch outer spigot bearing Assem. whose inner race is a
4B3712--no cross given in my UMS Hyatt New Departure cross reference book.
It maybe that this race is only longer than the 22 needs--you would need to check dimensions here to be sure--only offering this as a possible aid to locating a suitable replacement--a bit if grinding would have you something that maybe available unless the above 0V0226 supercedes in the Cat system to something we can cross.
Hope this helps.
Cheers,
Eddie B.