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TIMKEN bearings oil essence of select noise  

2012-08-30 11:50:39|  分类: 技术 |  标签: |举报 |字号 订阅

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 如果所选取TIMKEN轴承的极限速度转速不能满足使用要求时,可采用某些改进技术措施予以提高,以达到较满意的要求。如提高轴承公差差级;适当增大游隙;改用特殊材料和改进保持架的结构;改变润滑方式,如采用油气、油雾和喷射润滑;改善冷却条件等。

 If selected TIMKEN bearing limit speed speed is unable to satisfy the request, to be used in certain improved technical measures to increase in order to meet the requirements of a more satisfactory. Such as improving poor bearing tolerance levels; suitably increase clearance; use of special materials and improve the structure of cage; changes in lubrication methods, such as oil and gas, oil mist and spray lubrication; improve the cooling conditions.

(1) TIMKEN轴承的滚道声及其控制方法 滚道声是当TIMKEN轴承运转时,其滚动体在滚道面上滚动而发出的一种滑溜连续的声音,是所有滚动轴承都会发生的特有的基本声。一般的TIMKEN轴承声即是滚道声加上其他声音。 球轴承的滚道声是不规则的,频率在1000Hz以上,它的主频率不随转速而变化,但其总声压级随转速的加快而增加。 滚道声大的TIMKEN轴承,其滚道声的声压级随粘度的增加而减少;而滚道声小的轴承,其声压级在粘度增大至约20mm2/s以上时,由减少而转为有所增大。轴承座的刚性越大,滚道声的总声压级越低。如径向游隙过小,滚道声的总声压级和主频率会随着径向游隙的减少而急剧增加。 控制滚道声的方法有:选用低噪声轴承即波纹度很小的TIMKEN轴承,审慎地选择使用条件。滚道声常影响整个机械的噪声,减少滚道声就可以减少整个机械的噪声。

  (1) the TIMKEN roller bearing Raceway and its control method road when a TIMKEN bearing operation, its rolling body Raceway surface rolling on a slippery continuous voice and was all rolling bearings are unique to the basic sound. TIMKEN roller bearing sound that is road noise in General with other sounds. Ball bearing Raceway is irregular, frequencies above 1000Hz, the frequency rate does not change with the speed of it, but its sound pressure level increases with acceleration of the speed of. TIMKEN bearings Raceway loud, its acoustic sound pressure level rolling road with the increase and decrease of viscosity and raceways of bearings sound small, their sound pressure level in the viscosity increases to about 20mm2/s above, by a reduction to increase. Greater the rigid housings, rolling road, lower the overall sound pressure level of sound. Such as the radial clearance is too small, rolling road sound of a sound pressure level and main frequency will increase sharply as the reduction in radial internal clearance. Control of Raceway acoustic methods are: selection of low noise bearings which small waviness TIMKEN bearings, carefully select the use conditions. Rolling road sound often affects the entire mechanical noise, Raceway reduction can reduce the noise of machinery as a whole.

(2)滚动体的冲击声及其控制方法 较大型号的球TIMKEN轴承或圆柱滚子轴承在纯径向负荷下低速运转时,由于滚动体的离心力较小,处于非负荷区的滚动体就会冲击保持架或滚道而发出噪声。但随着转速的提高,这种声响就会消失。 对滚动体冲击声的控制方法有:适当减少径向游隙,使用有合理结构而材料有柔顺性的保持架的TIMKEN轴承。

  (2) impact sound and its control method of rolling large model ball TIMKEN bearings or cylindrical roller bearing under purely radial load and low speed operation, due to the centrifugal force of the rolling small impact load-free area in the rolling will roll cage or road noise. But as the speed increases, this noise will disappear. On the rolling control method for impact sound: appropriate reduction of radial clearance, reasonable structure and materials: soft cage of TIMKEN bearings.

(3)TIMKEN轴承的辗轧声及其控制方法 辗轧声是圆柱滚子轴承在所有场合都可能发生的刺耳的金属摩擦声,大多发生在脂润滑的较大型号轴承中,而在基油性能劣化的润滑脂中更易发生,在油润滑时几乎不发生。此外,在冬季时较易发生,当承受纯径向负荷时,在径向游隙大的场合容易发生,并且随型号大小的不同,在某一特定的转速范围内容易发生,既会连续发生又会间歇出现。对外圈滚道采取特殊的加工方法可以防止辗轧声的出现,必要时可选用这种轴承,或适当减少TIMKEN轴承的径向游隙,使用性能优良的润滑脂和提高与TIMKEN轴承相配机件的刚性。

  (3) TIMKEN bearings creak and control methods of creak cylindrical roller bearing can happen on all occasions of the harsh metal sound, mostly in the larger models bearing grease lubrication, and deterioration of the base oil are more likely to occur in the grease, oil lubrication does not happen almost. In addition, the more vulnerable in the winter, when under purely radial load, prone to big occasions in a radial clearance, and with different model sizes, easy to occur within a specific speed range, both continuous and intermittent. External ring road special processing methods can prevent the creak of the emergence of this bearing if necessary, or appropriate TIMKEN bearing radial clearance reduction, using high performance greases and improve go with TIMKEN bearings, mechanical rigidity.

本文来源贝尔轴承http://www.beier-bearingshop.com/timken-bearing.shtml

 

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