First, let’s understand what the clutch thrust bearing consists of.
The structure of the thrust bearing depends on the style, but the main components are basically the same, usually consisting of a thrust head, a rearview mirror plate, a thrust shoe, a bearing seat, an oil tank and a cooler.
1. The thrust head is the mechanical component of the generator that transmits axial load and torque. It is usually fixed on the shaft with a key and rotates along the shaft. The thrust head of a suspended generator is usually fixed to the top of the generator shaft using a transition fit and, in umbrella units, directly to the hub, or cast integrally with the hub.
2. The mirror plate is a rotating component fixed under the thrust head. The thrust load is transmitted to the thrust shoe and is one of the key components of the thrust bearing. There is often an insulating pad between the mirror plate and the thrust head joint surface, which can be used to adjust the device axis during installation. In recent years, some generators have eliminated the mirror plate, and directly processed the mirror plate's required smoothness on the end face of the thrust head.
3. The thrust tile is a stationary component of the thrust bearing and one of the main components of the thrust bearing. It is usually made of sector-shaped tungsten tiles. Thermometer holes are opened in the thrust pads for mounting a thermometer, allowing operators to easily monitor bearing temperature and temperature rise alarm tripping.
4. The bearing base is a mechanism that supports the bearing sleeve. It can adjust the height of the thrust tile to ensure that the force of each sleeve is basically uniform.
5. The oil tank is mainly used to store lubricating oil with cooling and lubrication functions. The entire thrust bearing is installed in a sealed oil tank. This can be a separate oil tank, or it can share an oil tank structure with the guide bearing. The heat generated by the thrust bearing friction when the unit is running is very large, so the lubricating oil in the oil tank not only has a lubricating effect, but also has a cooling effect by absorbing the heat that the lubricating oil can absorb. In addition, heat absorption in the oil is eliminated through a water-flow sump cooler.
6. The refrigerator can cool the lubricating oil and cool the thrust bearing.