Bearing function

Investigate its role should be to support, that is, the literal interpretation used to bear the shaft, but this is only part of its role, the essence of the support is to be able to bear the radial load. It can also be understood that it is used to fix the shaft. Bearing fast and easy automatic selection is included. It is to fix the shaft so that it can only rotate and control its axial and radial movement. The motor can't work without bearings. Because the shaft may move in any direction, the shaft can only be rotated when the motor is working. Theoretically speaking, it is impossible to realize the function of transmission. Not only that, the bearing will also affect the transmission. In order to reduce this influence, good lubrication must be realized on the bearing of the high-speed shaft. Some bearings already have lubrication, which is called pre-lubricated bearings. Most bearings must have lubricating oil, which is responsible for not only increasing energy consumption but also easily damaging the bearings due to friction during high-speed operation. The idea of turning sliding friction into rolling friction is one-sided, because there is something called a sliding bearing.

Lubrication

The lubrication purpose of rolling bearings is to reduce the internal friction and wear of the bearing, prevent burning and stick; prolong its service life; discharge friction heat and cooling, prevent the bearing from overheating, and prevent the lubricating oil from aging; it also prevents foreign matter from invading the bearing, or prevents rust, The effect of corrosion.

Lubrication method

Bearing lubrication method, divided into grease lubrication and oil lubrication. In order to make the bearing function well, first of all, it is necessary to choose a lubrication method suitable for the conditions of use and the purpose of use. If only lubrication is considered, the lubricity of oil lubrication is dominant. However, grease lubrication has the advantage of simplifying the structure around the bearing, comparing the advantages and disadvantages of grease lubrication and oil lubrication. Special attention should be paid to the amount of lubrication, whether it is oil lubrication or grease lubrication, too little lubrication does not fully affect the life of the bearing, too much will produce large resistance, affecting the speed.

Seal

The seal of the bearing can be divided into two categories: self-sealing and external sealing. The so-called bearing comes with a seal is to make the bearing itself into a sealing device. Such as bearing with dust cover, sealing ring, etc. This seal occupies a small space, is easy to install and disassemble, and has a relatively low cost. The so-called bearing plus sealing performance device is a sealing device with various properties manufactured inside the installation end cover. Bearing seal is divided into non-contact seal and contact seal two. Among them, non-contact sealing is suitable for high-speed and high-temperature occasions, with different structural forms such as gap type, labyrinth type and gasket type. Contact seal is suitable for medium and low speed working conditions, commonly used in felt seal, cup seal and other structural forms.