Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MR1315EX found under Bearing Roller Cylindrical by Rexnord Industries Inc Div Link. The National Stock Number assigned to this part is 3110001556603, 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 MR1315EX.