Why are the inner ring of a Miniature Bearing melting with shaft together?

Common occurance problem of the Bearings and the solution for them.

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Why are the inner ring of a Miniature Bearing melting with shaft together?

It may be that the fit between the inner hole of the bearing and the shaft is loose, resulting in slippage between the inner ring and the shaft, causing high temperatures to sinter the inner ring and the shaft together.

According to different bearing types, standard bearings are made of hardened and induction hardened heat-treated steel, and the recommended maximum working temperature is between 120 ℃ and 200 ℃. If the bearing needs to work continuously under high temperature, the dynamic load capacity of the bearing may need to be adjusted. Also pay attention to the role of lubricants. Pay attention to bearing materials, working environment, lubricants, etc.


What is the bearing clearance?

Bearing clearance refers to the amount of movement of the bearing before it is installed, and either the inner ring or the outer ring is fixed, and then the unfixed side moves radially or axially.

According to the moving direction, it can be divided into radial clearance and axial clearance. The size of the clearance during operation (called working clearance) has an effect on the rolling fatigue life, temperature rise, noise, vibration and other properties of the bearing. The radial clearance of rolling bearings is generally divided into /C1, /C2, /C0, /C3, /C4, and /C5. Groups 1 and 2 belong to small clearance; group 0 is the standard group clearance; groups 3, 4, and 5 are larger clearance groups. The selection of the rolling bearing clearance group should be selected according to the corresponding standard according to the product type, size, temperature used, and the degree of tightness of the shaft and the hole. Of course, this is a problem that should be determined when the equipment is selected. The detection of clearance should also be professionally tested in accordance with relevant industry standards.

TIC Bearing has a big selection of Miniature Bearings and Instrument Series Ball Bearings with over 300 types available,includes dental bearing for dental instrument ,fishing reel bearing for fishing reel ,RC car&truck bearing for remote control model car or truck   and stainless steel bearing for toys and instrument industry.

2020-06-20