ntn bearing cage materials and life

1: ntn bearing cage material:
ntn bearing cage material, the use of low carbon steel. According to different uses, also used yellow copper, stainless steel plate. Cut to cage materials, use of high strength brass, carbon steel, in addition also has the use of synthetic resin.
Mechanical strength, good dimensional stability, will also need good processing. According to different uses, as well as requirements of its impact resistance, heat resistance, good corrosion resistance.
As ntn bearing material using chrome steel, chrome molybdenum steel, nickel chromium molybdenum steel, hardened by infiltration of carbon to steel from the surface to the appropriate depth of a hardened layer. With appropriate hardening depth, meticulous organization, the appropriate surface hardness and rigidity of the permeability of carbon center bearing, Bearing steel bearings than with excellent impact resistance, the average penetration of the chemical composition of carbon steel bearings.
2: ntn bearing life:
1.ntn bearing manufacturing generally has to go through forging, heat treatment, turning, grinding and assembly processes such as multi-channel processing. The rationality of the processing technology, advanced, and stability will also affect bearing life. Which affect the quality of finished product bearing the heat treatment and grinding processes, often with the bearing failure will have a more direct relationship. In recent years, work on the bearing surface modification layer of studies have shown that the quality of grinding process is closely related with the bearing surface.
2. Using adjustment of the main factors is the installation, use and maintenance, maintenance repairs, compliance with technical requirements. According to ntn bearing installation, use, maintenance, maintenance of the technical requirements of the operation of the bearings to withstand load, speed, temperature, vibration, noise and lubrication condition monitoring and inspection, immediately find the cause abnormal, adjust, so that its back to normal. Installation factors are used that the first factor, the bearings are often caused by improper installation package bearing force between the various components state changes, bearing in abnormal operating condition, and early termination of life.
ntn bearing life, is under a lot of background material, analysis of data and failure mode, identify the main factors causing bearing failure, so that puts forward measures for improvement of service for extended ntn bearing, to avoid the occurrence of unexpected bearing early failure.
ntn bearing materials have been affecting the metallurgical quality of early bearing failure of the main factors. With Metallurgy techniques (such as vacuum degassing of steel bearings, etc.) and progress, to improve the quality of raw materials. Raw material quality factors in the bearing failure analysis of the proportion has decreased, but it is still bearing failure in one of the main factors. The appropriateness of selection is still bearing failure analysis must be taken into account.

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