Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IR-170X185X45 found under Ring Bearing Inner by Schaeffler Group Usa Inc. The National Stock Number assigned to this part is 3110015277264, 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 IR-170X185X45.