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Determine the method of using the life of the tightening sleeve

Source: Bearing network time: 2018-07-25
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The adapter sleeve is an accessory for the inner tapered bore bearing; it can ensure the stable operation of the supporting bearing; the longest life is the fundamental requirement; to reach this policy; it is necessary to reach the high precision for the set of products. The following four items Skill accuracy is the most important:
1. The radial runout of the outer cone of the bushing facing the inner hole (that is, the wall thickness difference KD0 is usually called) is high precision; otherwise, the rotating shaft generates centrifugal force due to the amount of partial pain; it cannot work smoothly; the oscillation is large; the noise is large. The wall thickness difference is “0” is the ambition situation. The maximum value of the national standard rule KD0 is less than 1/2 of the maximum value of the bearing inner diameter of the bearing specification group; the maximum clearance value of the C2 level precision is appropriate; It is not acceptable for the standard-qualified adapter sleeve products to be used in precision-loaded bearings.
After the measurement of the high-precision and high-priced set of products imported from abroad, and the use of the domestic compressor occupation, it is concluded that KD0≤0.005 can be called high precision; the function of high-precision and large-load matching bearings can be satisfied. Demand; this value is 5 times to 12 times better than the average scale of the national standard tolerance.
2, the set of cone angle difference must be better national standard with △ D1mp-△d3mp indication; different scale segment tolerance from +0. 018-0. 09 is the upper error demand tight set cone angle difference can only be large but not.蠖吮匦肱浜 蠖吮匦肱浜 蠖吮匦肱浜 《 《 《 《 《 《 《 《 《 《 《 《 《 《 《 《 《 《 《 《 丝 丝 丝 丝 丝 丝 丝 丝 丝 丝 丝 丝 丝 丝The vulgar 榷ǎ 榷ǎ 穸螅 穸螅 穸螅 胍舸螅 胍舸螅 胍舸螅 胍舸螅 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 淖 谩 确保 确保 确保 确保 确保 确保
3. The straightness of the outer taper surface and the inner hole of the tightening sleeve is better; the shape and public service are better; the cylindricity accuracy is better; the national standard has no rule, and any single cross-section dimension is qualified within the tolerance range; The outer surface of the outer cone is not linearly controlled; the outer surface of the outer cone is cut into grinding; the straightness of the blank itself is not good; the grinding wheel is poorly corrected; the linearity of the outer surface is very poor; usually the company has no profiler to view; so this The project has a great problem in the products of China's tight set of occupations; it seriously affects the matching accuracy and supporting stability; the same bearing function is unsatisfactory.
4. The threaded locking function of the adapter sleeve is driven by the rotation of the lock nut. The end face of the kneading bearing is tightened so that the adapter sleeve and the inner bore of the bearing are tapered; the intention of fixing the bearing on the rotating shaft is reached; Therefore, the cooperation between the bearing nut and the tightening bushing must be better; to meet the national standard requirements of the general thread:
In summary, the above four conditions are met; other skill conditions are also necessary to reach the tight set of national standard requirements to calculate high-precision products; as long as the high-precision adapter sleeve and the withdrawal bushing product can maximize the function and life of the bearing. number.
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