Analyze the six magic weapons of bearing quality

Source: China Bearing Network Time: 2013-04-05

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1 First look at the use of bearing steel raw materials; Germany FAG bearings are produced by individual professional steel mills; in terms of hardness and fineness are higher than the impersonation of FAG bearings.
2 Use high-input symbol equipment; in order to establish the company's brand image; avoid products being counterfeited; FAG bearing manufacturers choose laser symbol machine; expect to establish company image; connect with the world; use high input to control products being counterfeited; Because the laser symbol machine uses computer control; symbol fonts, size and other modifications to the advantages of convenience; not only can effectively block counterfeiting; instead, add difficulty to the counterfeiters.
3 Investigation method. Investigate the rolling bearing with the naked eye; the raceway in the table should have no shedding marks and severe wear; and it should be in the shape of a circular groove. All the tumbling surface should be free from mottle, crack and peeling. The cage should not be loose. No damage, no wear; no gap with the roll.
4 feel method. The gap between the inner race and the roll of the normal bearing is 0. 005 to 0. 010 mm. For the rolling bearing that has been used for one period; when the inner race is pinched with fingers to perform axial shaking; No significant squeaking noise.
5 transformation method. Hold the inner race of the bearing with one hand; change the outer race with the other hand; the bearing should be sensitive to change; and the radial sway should not be felt.
6 Of course, it depends on the price. If the price is lower than normal, it may be a false claim. Donâ€™t buy a penny. The price is really high, so the import is very expensive.
When viewing; should combine the above five experience methods; in order to facilitate the correct judgment of the skill of the rolling bearing. About tapered roller bearings; should also investigate whether the roll can be located in the center of the outer ring; if there is before Should not exceed 1. 5 mm in addition to the above distinction; can also be distinguished from color and precision. Can also refer to other imported bearing brands; iko bearing, Sweden SKF bearing, US TIMKEN bearing, Japan NSK bearing, koyo The method of distinguishing between authenticity and the like.

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