... end face of end thrust bearing and end face of bush bearing during long period of the pump’s operation. That ... Structure Drawing1.Pump body, 2. Impeller, 3. Pump cover, 4. Bush bearing, 5. Pump shaft, 6. Inner magnet rotor, 7. External ... Structure Drawing1.Pump body, 2. Impeller, 3. Pump cover, 4.Bush bearing, 5. Pump shaft, 6. Inner magnet rotor, 7. External ...