Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RGR390B1X7UL found under Bearing Shell by Siemens Demag Delaval Turbomachi. The National Stock Number assigned to this part is 2010003915846, and the Federal Supply Class is 2010 Ship And Boat Propulsion Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RGR390B1X7UL.