Generator
Optimum selections is made among induction or synchronous generators depending on the connection to the grid.
Bearings are of standard ball-type and lubricated with grease.
Runner
Optimum selection is made among three types of runners depending on site condition such as head and cavitation.
Runner blades and runner hub are of stainless steel castings.
Turbine Shaft
Turbine shaft is of stainless steel.
Turbine shaft is designed with vibration analysis by FEM and also static strength analysis so as to withstand runaway speed in a same method as large capacity turbines.
Turbine Bearing
Bearings combine with tapered roller type which withstands thrust and radial load, and cylindrical roller type which withstands radial load independently.
Bearings are lubricated with oil of VG-46 or equivalent.
Shaft Seal
Shaft seal is mechanical type of self-lubricating with liquid paraffin. Materials are of ceramic or carbon.