NSK bearings the required conditions of equipment and other property of the increasingly stringent market requirements, performance is becoming more diversified. From a large number of structures, sizes, choose the most suitable bearings, require different angles. Bearings selection, generally considered as a bearings, installation and dismantling difficult arrangement, bearings, dimensions and bearings of the market, such as space allows, general decisions bearings structure. In the use of a variety of mechanical design life and a variety of durable bearings comparative study on limit bearings, also decided that the bearings size. Selection of bearings, bearings tend to believe that the grease life in Aging, fatigue life of oil, wear-resistant, noise, also need to be fully studied.
In addition, depending on the purpose, it is necessary to choose precision, clearance, cage structure, grease and other requirements, the special design bearings. However, the bearings selection and do not have a certain degree of order, rules, should give priority to NSK bearings the required conditions, performance, and related issues, in particular the practical. As long as the raw performance bearings in order to remain intact as much as possible, to maintain, to maintain, in the first place, in order to prevent accidents, ensure the reliability of running, improve productivity and economy. Appropriate machinery operations and maintenance standards, regularly, the best conditions. Including monitoring running state to supplement or replace lubricants, checks cleared on a regular basis. As a matter of maintenance operations, NSK bearings rotation, vibration, temperature, lubrication conditions, and so on.
Bearings cleaning: remove bearings repair, first appearance of bearings down, confirm that the amount of excess lubricant, after sampling inspection using lubricants, cleaning bearings. As a cleaning agent, general use gasoline, kerosene. Remove bearings cleaning, washing and finishing wash thick, is placed in a container, metal bottom of the first, the dirt container make direct contact NSK bearings. Coarse wash if the bearings rotate dirt, damaged bearings rolling surface, you should be aware of. In crude oil wash, brush brushes to remove grease, sticky material, General cleaning, washing into fines. Sperm washing is oil on one side of the bearings rotation, careful cleaning. In addition, cleaning oil must be kept clean.
Bearings maintenance and judgment: to determine whether it can be used to check the bearings remove bearings after cleaning. Check the Raceway, raceways, surface condition, cage wear, bearings clearance and improved dimensional accuracy, not related to injury, the exception. Non-separation of small ball bearings, the inner ring, the level of support with one hand, rotate the outer ring to confirm success. Separation such as tapered roller bearings-bearings, you can scroll the body, outer ring raceway surface was examined. Large bearings, because they can't rotate, note check rolling body Raceway, cage, wall, such as appearance, high importance of NSK bearings, you want to check more carefully.
By NSK bearings failure and deterioration, performance status parameter to determine and predict the reliability and performance of the bearings, part of the abnormal situation, reasons and the degree of risk identification and judgement, decide to fix and improve methods of integrated technologies. Therefore, bearings fault diagnosis technology is not a simple fault detection (or monitoring) technology, is not simply a check of instrument. Gathers the signal correctly, quickly and effectively, data processing, manual or automatic identification and judgment. In order to determine the repair cycle of science, it should be based on the failure mechanism, on fatigue estimation, carrying out the necessary tests and wear life.
Judgment of the NSK bearings are available, mainly in the light of importance degree of bearings damage, mechanical properties, condition, operation, until the next maintenance period and decided. If you have the following defects you can no longer use, new bearings must be replaced. Inner ring, outer ring, rolling elements, cages on any one have crack or gap.
1, rings, rolling elements on any one broken.
2, scroll bars, scroll bars, road surface, retaining edge has a marked card injuries on the body.
3 notable or rivets, cage wear significantly relaxed.
4 surface, rolling, rolling road on the rust, is injured.
5, roll on the road surface, rolling there is serious pressure marks and traces.
6, the diameter of the inner ring, or the outer ring outside diameter surface creep is evident.
7, discoloration caused by the heat of the obvious.
8, into grease NSK bearings, broken clear of the seals or shields.


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