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How to distinguish the quality of one-way bearings?

Source: 本站 | Date of issue: 2021-07-29 14:47:07 | Views: 6475

Abstract:

The quality of the one-way bearing directly affects the length of the bearing time, so the quality of the steel must be screened when selecting the bearing. Whether the selection of materials is appropriate is still a factor that must be considered in…

The quality of the one-way bearing directly affects the length of the bearing time, so the quality of the steel must be screened when selecting the bearing. Whether the selection of materials is appropriate is still a factor that must be considered in the failure analysis of one-way bearings. The main task of bearing failure analysis is to find out the main factors causing the failure of stainless steel bearings based on a large number of background materials, analysis data and failure modes, so as to propose improvement measures to extend the service life of the bearing and avoid sudden occurrence of the bearing. Early failure of sex. Installation conditions are one of the most important factors in the use of factors. Bearings often change due to improper installation, resulting in changes in the stress state between the various parts of the entire set of bearings. The bearing runs under abnormal conditions and fails prematurely.
  According to the technical requirements for bearing installation, use, maintenance, and maintenance, monitor and inspect the load, speed, working temperature, vibration, noise and lubrication conditions of the bearing in operation, find the cause immediately, and make adjustments when the abnormality is found. Back to normal.
  1. Whether the outer packaging is clear: Under normal circumstances, the brand has its own dedicated designers to design the outer packaging, and arrange the production of factories that pass the production conditions, so the packaging is clear from the lines to the color blocks. vague.
  2. Whether the steel printing is clear: Brand words, labels, etc. will be printed on the one-way bearing body. The fonts are small, but most of the products produced by the factory use steel stamping technology, and they are pressed before heat treatment. Therefore, although the fonts are small, they are deep and clear. The fonts of counterfeit products are not only blurred. Due to the rough printing technology, the fonts float on the surface, and some of them can even be easily erased by hand.
  3. Whether there is noisy noise: hold the inner sleeve of the stainless steel bearing with your left hand, and turn the outer cover with your right hand to listen to whether there is noisy noise. Due to the backward production conditions of most counterfeit products and the use of hand-crafted workshops, it is inevitable that impurities such as sand will be mixed in the production process, which are hidden in the one-way bearing body, so noise will be generated when rotating. This is the difference from a genuine brand that strictly enforces production standards and uses machines.
 4. Whether there are turbid oil traces on the surface: This should be paid special attention to when purchasing stainless steel bearings. Since the current domestic anti-rust technology is not very popular, it is easy to leave thick oil stains when the one-way bearing body is rust-proofed. I can't see the traces of the anti-rust oil, but a very careful expert said that the bearing smells a kind of smell, it must be the anti-rust oil, but I can't see it.
 5. Whether the chamfer is uniform: the so-called chamfer of the bearing, that is, the junction of the horizontal plane and the vertical plane, the counterfeit bearing is not handled satisfactorily at these corners due to the limitation of production technology. The metallurgical quality of one-way bearing materials used to be the main factor affecting the early failure of rolling bearings. With the progress of metallurgical technology (such as vacuum degassing of bearing steel, etc.), the quality of raw materials has been improved. The proportion of raw material quality factors in the failure analysis of stainless steel bearings has declined, but it is still one of the main factors affecting bearing failure.
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