Often affects the entire mechanical noise, Raceway reduction can reduce the noise of machinery as a whole. Impact sound and its control method of rolling ball or cylindrical roller bearings with larger models under purely radial load and low speed operation, due to the centrifugal force of the rolling small impact load-free area in the rolling will roll cage or road noise. But as the speed increases, this noise will disappear. On the rolling control method for impact sound: appropriate reduction of radial clearance, reasonable structure and materials: soft cage of NSK bearings.
Creak and controlling method of NSK bearings creak cylindrical roller bearing can happen on all occasions of the harsh metal sound, mostly in the larger models bearing grease lubrication, and deterioration of the base oil are more likely to occur in the grease, oil lubrication does not happen almost.
In addition, the more vulnerable in the winter, when under purely radial load, prone to big occasions in a radial clearance and NSK bearing different model sizes, easy to occur within a specific speed range, both continuous and intermittent. External ring road, take the special processing methods can prevent creak appears, select the NSK bearings if necessary, or appropriate NSK bearing radial clearance reduction, using high performance greases and enhance rigidity of bearing matching parts.
NSK bearing fatigue life estimation method of calculation methods and test Zhan two
(1) calculated according to the formulas and calculation rules set out by NSK bearing fatigue life calculation of fatigue life, calculate the total transfer values provided for inner ring or shaft washer turn (outer ring or washer is fixed at this time), the total transfer values.
In accordance with the provisions of the standard test method for rolling bearing fatigue life test procedures, using performance meets the requirements imposed by a method of testing machine, fatigue life test sampling for a batch of NSK bearings, obtained from experimental data processing practical tests of life, namely, for this group of participants were represented by NSK bearings bearing fatigue life.
Lubrication of rolling bearing fatigue life test is fully maximize the inhibiting factor of wear of rolling bearings, load and speed of the use of enhanced to highlight the NSK bearing an enhanced test method for fatigue life of fatigue factor.
NSK bearing fatigue life calculation of fatigue life test and complement each other, corresponds to the results of both have plenty of sex.
But reality in the, as on each a specific of using occasions, are extraction enough number of NSK bearing for life test, to validation by selected NSK bearing whether suitable, this in economic Shang, and time Shang and labor Shang are is is vast of, so bearing life of test method just in is necessary or important of situation Xia only using, in most situation Xia, used standard of life calculation method to estimated NSK bearing of using life, has enough degree of can dependency.


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