... deep well pump Impeller:plastic,Motorcoil:copper,Aluminum,Bearing:home/C&U,Shaft with Rotor:45#,AIS304,220v/50hz. submersible deep well pumpTwo –pole induction motor ... (n=2850r.p.m)Insulation class BProtection IP45Material:Motor casing:Aluminum.Impeller: ... 825QGD1.8-48/8-0.750.751.0220502850502925 submersible deep well pump