Pump Stations: Thrust Balancing

Bryan Bach Blog, Jensen Water Resource Blog, Pump Stations

Radial Loads When pumps operate away from their BEP, the pumps will generate uneven pressure forces inside the volute casing causing a radial thrust load on the impeller. The radial thrust load has many detrimental effects on the life of the pump. The first and most obvious is a loading on the bearings. Increased radial loads cause higher bearing reaction forces decreasing the life of the bearing. The force applied to the impeller increases as we move further and further away from the best efficiency point. Another problem caused from radial loading is the slight bending of the pump shaft, …