KOYO bearing installed on main influencing aspects of life

Determine the service life of the bearing length of many factors, but in general can be divided into two kinds, one is the internal cause, KOYO bearing themselves) , another is bearing the external cause. Bearing inner factors mainly include structure design, manufacturing process and material quality and so on three big factors. Bearing manufacturing generally go through forging, heat treatment, cutting, grinding and assembly, and multi-channel processing operations. However, the rationality of the processing technology, advanced, stability will also affect the service life of bearing. Which affects the quality of finished product KOYO bearing heat treatment and grinding process usually has more direct relation with bearing failure. KOYO bearing material metallurgy quality was the main factor affecting the premature failure of the rolling bearing. As metallurgy technology, For example, the bearing steel vacuum degassing, etc. ) Progress, raw material quality is improved. Raw material quality factor in the bearing failure analysis share has declined obviously, but it is still one of the main influence factors of bearing failure. Select material adequacy is still bearing failure analysis factors must be considered. ( 1) Conditions for surplus with fixed circle take transgressions is suitable surface on both sides have high shape accuracy and smaller roughness, cause otherwise in installation and removal harder, in addition, also need to consider the influence of the spindle thermal elongation. ( 2) Using double angular contact ball bearing of the spindle in pairs, for the most part load lighter, its interference such as large amount, the amount of axial preload is its internal significantly larger, causing adverse effects. Using the double row short bearing spindle and the spindle bearing, its load is opposite bigger, so its interference also relatively large. ( 3) Shaft and hole of the roundness and shoulder roll vertical degree according to the corresponding precision of KOYO bearing to requirements. ( 4) Should not only precise calculation of rotating ring with the amount of interference, also to accurate calculation of the fixed ring with right quantity. The rotating ring interference quantity within may also should be made smaller. As long as to ensure that work under the temperature of thermal expansion effect, and under the maximum speed of centrifugal force effect, not cause peristalsis or sliding on the surface of the tight fit. Fixed ring size according to the size of the working load and KOYO bearing, choose the smallest clearance fit or interference fit, too loose or too tight is unfavorable to keeping the original precise shape. ( 5) KOYO bearing such as under the condition of high speed operation and high working temperature, should pay special attention to the matching of the rotating ring is too loose, to prevent the eccentric vibration, with a gap and the matching between the fixed ring, in order to prevent the ferrule deformation and vibration under load