Check whether the amount of grease used in INA spherical ball bearings is reasonable

The grease used in the INA bearing must have an anti-rust effect, and the anti-rust agent is preferably insoluble in water. The grease should have good adhesion and form an oil film on the surface of the steel. The grease will become soft during machining and cause leakage. During normal operation, the grease will pass from the bearing housing to the ball bearing in the outer spherical ball. If the mechanical stability of the grease is not enough, during the operation, the structure of the soap of the grease will mechanically disintegrate, causing the grease to be destroyed, thereby losing the lubricating effect. If the grease is wrongly selected, all measures for preventing the INA bearing are futile. A grease whose base oil viscosity provides sufficient lubrication at the working temperature is important. The viscosity is mainly affected by the temperature, it decreases as the temperature rises, and it rises as the temperature drops. Therefore, it is necessary to know the viscosity of the base oil at the operating temperature. Mechanical manufacturers often specify the use of certain greases, however most standard greases are available in a wide range of applications.
Grease is critical in the use of a spherical outer ball bearing. If a deteriorated grease is used, it will not only function as it should, but it will also damage the INA bearing.
Grease is used to lubricate the bearings. Of course, the more the better, it is not. It is not necessary to add too much grease to the bearing, but it will increase the friction and increase the temperature. However, if the fat is too small, the oil film of the grease is not sufficiently repaired, which may deteriorate the lubrication state of the bearing. Therefore, it is important to determine the proper loading of the grease in the INA bearing. Refer to the following guidelines for the amount of grease filled in a spherical ball bearing with a seat:
(1) The viscosity of the lubricating oil is an essential factor in forming a lubricating oil film. Medium viscosity lubricants are used in medium speed, medium load and low temperature conditions. In the case of heavy load, low speed and high temperature, use high viscosity oil or lubricant with extreme pressure anti-wear agent. Low viscosity lubricants are used under low load, high speed and low temperature conditions.
(2) Synthetic lubricating oil is used under the conditions of wide temperature range, light load and high speed, and other special requirements.
(3) Take the internal combustion engine oil as an example, select the appropriate viscosity and high viscosity index, so that the oil has sufficient high temperature viscosity to ensure the lubrication and sealing of the engine during operation, and can have a small enough viscosity at low temperature to ensure Low temperature start performance. The choice of viscosity is usually based on temperature conditions, but also factors such as load level, speed, or engine wear.

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Maintenance tips for INA thrust angular contact ball bearings with lubrication

The function of the bearing fit is to consolidate the stationary and rotating rings of the bearing with the stationary part (usually the bearing seat) and the rotating part (usually the shaft) of the mounting part, thereby realizing the transfer of the load and the defined movement in the rotating state. The basic task of the system relative to the position of the stationary system.
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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