Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KGR391AWX4UL found under Bearing Shell by Siemens Demag Delaval Turbomachi. The National Stock Number assigned to this part is 3110003915828, 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 KGR391AWX4UL.