In the shaft and housing, the thrust angular contact ball bearing requires fixing its position in three directions: radial, axial and tangential directions. The radial and tangential positioning is achieved by the tight fit of the INA bearing ring. The axial positioning is only used in a few cases; the axial position is generally used, such as the end cap and the retaining ring. Limited to the clearance range.
When choosing a fit, you should pay attention to the following four points:
(1) The circumferential surface of the bearing ring should have good support and uniform force to reduce deformation, and fully exert the bearing capacity of the INA bearing.
(2) The ferrule cannot slide in the tangential direction in its mating surface, otherwise the mating surface will be damaged.
(3) The free end bearing must be compatible with the length change of the shaft and the housing bore, that is, it must have the ability to accommodate the axial position to swim within a certain range.
(4) It must be noted that the installation and disassembly of the thrust angular contact ball bearing is simple, saving labor, time and money.
Oil bath lubrication is the most common lubrication method. It is suitable for the lubrication of low and medium speed bearings. Part of the INA bearing is immersed in the groove. The lubricating oil is brought up by the rotating bearing parts and then flows back to the oil groove. The oil level should be slightly lower. The center of the lowest rolling body.
Drip lubrication is suitable for bearing parts that need to supply lubricating oil quantitatively. The amount of dripping is generally one drop per 3-8 seconds. Excessive oil quantity will cause the bearing temperature to increase.
The filtered oil is delivered to the bearing component by an oil pump, and the lubricating oil after contacting the ball bearing through the thrust angle is filtered and cooled for use. Since the circulating oil can take a certain amount of heat to cool the bearing, this method is suitable for bearing parts with higher rotational speed.
The dry compressed air is mixed with the lubricating oil through a sprayer to form an oil mist. In the INA bearing, the airflow can effectively cool the bearing and prevent the intrusion of impurities. This method is suitable for the lubrication of high speed, high temperature bearing components.
The high-pressure oil is injected into the bearing through the nozzle by the oil pump, and the oil injected into the bearing flows into the oil groove through the other end of the bearing. When the thrust angular contact ball bearing rotates at a high speed, the rolling elements and the cage also form a gas flow at the relatively high rotation speed of the surrounding air. It is difficult to send the lubricating oil to the INA bearing by the general lubrication method, and the high pressure injection must be used. The method sprays the lubricating oil into the bearing, and the position of the nozzle should be placed between the inner ring and the center of the cage.
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