Feeling of NSK bearings run has been reduced, and seems to be a bit more slowly. Today we are targeting NSK bearings should run and how to keep the limit will not result in bearing contacts occurred because of chronically limited run bad factors such as fatigue failure. As follows is by adjusting the NSK bearing method of limit runs.
When the NSK bearing in 0.1C when running under load conditions, due to contacts between the rolling elements and raceways contact surface stress increases, resulting in elevated bearing temperature, relative deterioration of lubricant performance, therefore, NSK bearings of the speed limit will be reduced accordingly.
For C/=10 the range, due to lower the speed limit is very small, it can not be considered, namely, according to the F1=1 value.
NSK bearings subjected to combined load effect, due to its increased number of rolling load, friction increases, heat rises, lubrication and cooling conditions worsen and force a cage was increased and, therefore, must be based on the bearing type and size of load angle, F2 NSK bearing limit speed multiplied by a reduction coefficient to be adjusted.
If selected NSK bearing limit speed speed is unable to meet the application requirements, to be used in certain improved technical measures to increase in order to meet the requirements of a more satisfactory. Such as improving bearing tolerance classes; 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.
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