Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1J2860 found under Cup Tapered Roller Bearing by Caterpillar Inc. The National Stock Number assigned to this part is 3110001011791, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1J2860.