Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 20J178 found under Bearing Plain Self Aligning by Rexnord Industries Inc Div Link. The National Stock Number assigned to this part is 3120004469863, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 20J178.