What is thrust bearing of hydraulic generator?
The thrust bearing bears the axial thrust of the rotor in operation, and determines and maintains the axial mutual position between the rotor and the cylinder of the turbine.A thrust ball bearing is a separable type bearing, the shaft ring and the seat ring can be separated from the components of the cage and the steel ball. The shaft ring is matched with the shaft is matched with the seat ring, bearing hole phase of the ring, there is a gap between the axis and thrust ball bearings; can only bear the axial load, axial load is one-way thrust ball bearing can bear a direction of the axial load, two-way thrust ball bearings can withstand the two directions of the thrust; the ball bearings can limit the radial displacement of the shaft, the speed limit is very low, the axial displacement in one direction thrust ball bearing can limit shaft and shell, axial displacement bearing can limit the two directions.
In the design selection, should be preferred; 80000 type cylindrical roller thrust bearing, 90000 thrust tapered roller bearings and thrust needle roller bearings AXK type, can withstand a one-way axial load, axial load capacity than the thrust ball bearings are much larger, and the axial rigidity, small space occupation. Thrust cylindrical roller bearings and thrust needle roller bearings are suitable for low speed occasions, and thrust cone roller bearings have a higher rotational speed than thrust cylindrical roller bearings.
Thrust roller bearings are used to bear axial load, axial load and radial joint load, but radial load should not exceed 55% of axial load. Compared with other thrust roller bearings, this kind of bearing has lower friction coefficient, higher rotating speed and better self-aligning performance. Type 29000 roller bearing for asymmetric spherical roller, can reduce the roller and the raceway in the work of sliding and roller length, diameter, and roller number, high load capacity, usually by oil lubrication, individual low speed can be used for grease lubrication.
