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 - IP55 - Speed: 1450 rpm Pump Materials: Pump casing: Cast Iron GG25 Impeller: cast Iron GG25 Shaft: Stainless steel Shaft sleeve: Stainless steel AISI 420 Bearing type: Radial bearings: Roller Axial bearings: Balls Lubrication: Grease Sealing Type: Packing