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How to judge the failure of KOYO bearing by sound?

wallpapers News 2021-08-23
Overview of KOYO bearings
Founded in 1921, KOYO (Japan's KOYO Seiko Co., Ltd.) is one of the four major bearing production groups in Japan. It has a long history and culture. It ranks third in Japan in the manufacture of imported bearing products. It is a comprehensive functional product oriented by R & D. By manufacturing automobile bearings, steering gear and its parts, KOYO bearings are committed to contributing to the increasingly perfect coordination between human beings and the earth, society and automobile. KOYO has the world's top production and control equipment. It has eight major production plants in Japan, including Tokyo, Nara, odita, Toyohashi, Takamatsu, Tokushima and Kuishan (all of which have passed ISO9001 certification). It is spread all over Europe and Asia and has multiple production bases and research institutions in North and South America.
How to judge the failure of KOYO bearing by sound?
When the rolling bearing is working, it operates stably, briskly and without stagnation under normal conditions, with harmonious sound and no noise. A uniform and continuous "buzzing sound" or a low sound can be heard, and the noise is not strong. So how do we judge when KOYO bearing has problems?
Firstly, when the uniform and continuous friction sound of the KOYO bearing is heard, it contains irregular metal vibration sound independent of speed.
The general performance of lubricating grease in the bearing is insufficient and should be supplemented. If the equipment is shut down for a long time, especially under the low-temperature conditions in winter, KOYO bearings sometimes make a "Zizi" sound during operation, which is related to the reduction of bearing radial clearance and the reduction of grease penetration. The bearing clearance shall be properly adjusted and new grease with high permeability shall be replaced.
Second, when KOYO bearing is found to make a low sound
When KOYO bearing is found to make a low sound, this sound is caused by scars, grooves and rust spots on the raceways of rolling elements and inner and outer rings. The sound period is proportional to the speed of the KOYO bearings. The bearing should be replaced.
Third, when the KOYO bearing makes a discontinuous sound
A discontinuous sound is caused by the rupture of the cage or inner and outer rings. KOYO bearing replacement must be stopped immediately.
Fourth, when it is found that the irregular and uneven friction sound of the KOYO bearing is caused by impurities such as iron filings and sand falling into the bearing. The sound intensity is very small, independent of the number of revolutions. KOYO bearings shall be cleaned, re-lubricated or oil changed.
Fifth, the KOYO bearing makes a continuous and irregular relatively loud sound
It is generally related to the loose fit between the inner ring and the shaft or between the outer ring and the bearing hole when the KOYO bearing makes a continuous and irregular relatively loud sound during the working process. When the sound intensity is high, the coordination relationship of the KOYO bearing shall be checked, and the problem shall be repaired in time.
ERIC BEARING LIMITED as a leading bearing distributor in Asia, we are boast of high popularity among customers, with our products being exported to over 100 countries. We always devote to customized perfect purchasing solution for every customer. We have more than 8 years of export experience that can help you find the ideal purchasing solution. Feel free to contact us for the high quantity KOYO bearings.

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