Multistage Centrifugal Pumps The pump will be driven by electrical motor assembled on a common base plate with the pump through a flexible coupling. Motor: 380/3/50 - Insulation class F - Speed: 1450 rpm Pump Materials: Pump casing: AISI 316 Impeller: AISI 316 Shaft: AISI 431 Shaft sleeve: AISI 431 Bearing type: Radial bearings: Roller Axial bearings: Balls Lubrication: Grease Sealing Type: Packing