... to directly drive deep well pumps in 6’’,8’’,10’’12’’casings in order to lift under ground water for city ... below: Motor type1215a/21218a/21222a/21228a/2Max.Casing ID8’’10’’12’’14’’Shroud ID(mm)2002503003404.ConstructionMotor consists of stator,rotor ... -resistant materials,capable of takinig heavy axial thrust from the pump.6) To increase the ability of heat dissipation,heat exchangers ...