koyo bearings showed late failure characteristics to a serious failure (typically no more than a week bearing damage, such as axle, burns, sand shelf spallation, raceway, bead wear), equipment, greater capacity, faster speed, the shorter the interval. Therefore, the actual bearing fault diagnosis, found that late failure characteristics, should be decisive to determine the one-way bearing fault, as soon as possible overhaul.

1，popular koyo bearings of the manufactured through forging, heat correction measures, turning, grinding and assembly and other multi-channel processing. Reasonable, advanced process and stability will also affect the one-way bearing life. Bearing quality of the thermal correction measures and grinding processes, often have a more direct relationship with the bearing failure. In recent years the study of the bearing surface transformed layer marked the close relationship of the grinding process and the quality of the bearing surfaces.
Koyo bearings have been damaged should be replaced immediately.

2, the bearing grease is too small, too much iron and other impurities. The capacity of one-way bearing grease should not exceed 70% of the total volume of impurities should be replaced.

3, shaft and bearing with tight or too loose. Tight when re-grinding, when too loose shaft inlay sets.

4, the bearing and end cap with tight or too loose. Tight when machining the bearing chamber, set within the end cap is too loose steel sleeve.

5, both ends of the cover of the motor or bearing cap assembly bad. The end cap or the Mouth put into the bearing cap, mounted flat, tighten the screws.

6, the belt too tight or poor coupling assembly. Adjust the belt tension, correction coupling.

7, one-way bearing lube too few impurities or oil ring is stuck. Such as refueling, a new oil, repair or replace the oil ring.

Movement after a period of vibration and noise to maintain a certain level, the spectrum is very simple, only the first, second multiplier. Rarely more than three times the working frequency spectrum, one-way bearing state is very stable, into a stable period. Continue to run into the use of the late bearing vibration and noise begins to increase, sometimes appeared tone, but the change of vibration increases more slowly at this time, the koyo bearing the kurtosis values ??suddenly reaches a certain value. We believe that the bearing that is, the initial failure.

koyo bearing the use of life analysis of the primary obligation is based on a lot of with King data, analyze data and failure style pattern to identify the primary elements for bearing failure, so that proposed improvements to delay the decommissioning of the one-way bearing of Avoid the koyo bearing angry unexpected early failure.



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