Popular situation the nsk bearing grease fill quantity, always beyond the direct intervention lubrication practice demand full held in the cavity of the shelves and rolling mill bearing cover, and an outline of the periphery of the rolling element. In this process, because the excess grease resistance, the bearing temperature rise very fast. Although most of the excess grease is squeezed out at the beginning of the operation, and crowded in the raceway attachments grease may still be migrated transforming the rolling element into the raceway between.

These in the early stages of the mill bearing run, most grease quickly (less than one minute) was extruded raceways, while the accumulation of grease in the transmigration followed bearing migration transition body, gradually small amount to be discharged. Then nsk bearing temperature continues to rise, known as grease go Hopewell stage until the excess grease discharge, based on the elements of the mill bearing structure grease quality, filling amount, this is likely to continue when a dozen minutes, and even hours.

A. the NSK bearing life:

NSK Bearings cleanliness considerable impact on bearing life, bearing the company has been carrying out specialized test, the result of the difference of even several times. The higher the cleanliness of the bearing, the longer the life of the test: the different lubricant cleanliness of great influence on the life of the ball bearings. Improve the cleanliness of the lubricating oil can extend the life of the rolling mill bearing, in addition, if the lubricating oil containing dirt particles is controlled at below 10um, the bearing life is also a multiple of growth.

B. the impact of noise and vibration:

The vibration impact: NSK Bearing Test results show that: Cleanliness serious impact the mill bearing vibration level, especially in high frequency band vibration more significant. High cleanliness bearing vibration velocity value is low, especially in the high frequency band.

C. the lubricating properties of the impact:

NSK bearing cleanliness decreased, not only to affect the formation of the lubricant film can also cause deterioration of the grease and accelerate the aging, which affects grease lubrication degradation.

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