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The fixing method and the lubrication method of INA bearings

wallpapers Tech 2020-11-20
INA bearings are fixed parts of machinery. The working performance of rolling INA bearings largely depends on its material properties. Usually low-alloy, high-purity hardened chromium steel is used as the material for manufacturing INA bearing rings and rolling elements. For INA bearings subjected to high impact loads and alternating bending stresses, carburized steel is used.
 
INA bearings are divided into inner and outer rings. What is the fixing method? The lock nut of the INA bearing fixes the inner ring of the INA bearing by the shaft shoulder and the lock nut to achieve axial fixation and has a stop washer to prevent loosening, which is safe and reliable. The fixing of the adapter sleeve of the INA bearing relies on the radial size of the inner hole of the adapter sleeve to be compressed and clamped on the shaft to realize the axial fixation of the inner ring of the INA bearing. INA bearing shoulder fixation INA bearing inner ring relies on the shaft shoulder and interference to achieve axial fixation. Suitable for supporting structures fixed at both ends.
 
The circlip of the INA bearing is fixed in the axial direction of the inner ring of the INA bearing by the shaft shoulder and the lock nut, which can bear a small bidirectional axial load. The end thrust washer of the INA bearing fixes the inner ring of the INA bearing by the shaft shoulder and the shaft end retaining ring to achieve axial fixation. The shaft end retaining ring is fixed on the shaft end with screws, and the fixing screws should have an anti-loosening device.
 
Lubrication analysis of INA bearings The purpose of lubrication of INA bearings is to reduce the internal friction and wear of INA bearings. The lubrication effects are as follows. Extend fatigue life. The rolling fatigue life of INA bearings is prolonged if the rolling contact surface is well lubricated during rotation. On the contrary, if the oil viscosity is low, the lubricating oil film thickness is not good, and it is shortened.
 
Reduce friction and wear of INA bearings. In the mutual contact part of the ring, rolling element and cage constituting the INA bearing, metal contact is prevented and friction and wear are reduced. Discharge frictional heat, cooling cycle oil feeding method, etc., can use oil to dissipate heat generated by friction or heat transferred from the outside and cool. Prevent the INA bearing from overheating and prevent the lubricant from aging. Others also have the effect of preventing foreign matter from entering the inside of the INA bearing or preventing rust and corrosion.
 
Lubrication method: The lubrication method of INA bearings is divided into grease lubrication and oil lubrication. In order to make INA bearings perform well, first of all, we must choose a lubrication method suitable for the use of conditions and purposes. If only lubrication is considered, the lubricity of oil lubrication is dominant. Grease oil can simplify the features of the structure around INA bearings.

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