Bearing vibration on bearing damage and bearing temperature measurement 0 static load calculation safety coefficient Fs help to determine the selected bearing whether it has enough static load rating.

FS = CO/PO

One FS static load safety coefficient, and the spherical ball bearing that rated the static load code CO [KN], PO equivalent static load [KN]

The static load safety coefficient FS is to prevent rolling parts contact area appears permanent deformation safety coefficient. For must smooth running, low noise, the bearing, requires the FS numerical high; Only request medium operation noise occasions, can choose smaller FS; Generally we recommend the following values:

FS = 1.5 ~ 2.5 suitable for the low noise level

FS = 1.0 ~ 1.5 applicable to the conventional noise levels

FS = 0.7 ~ 1.0 apply to medium noise level

Rated static load CO [KN] has set up a file in the table for each variety specification listed the bearing. Some commonly used needle bearing new and old code CRT the load (to heart bearings radial force, it is to thrust bearing is in the axial force), in the rolling body and groove contact area center from theory pressure for:

-4600 N/was self-aligning ball bearings

-4200 N/was the other type ball bearings

-4000 N/was all roller bearings

In the static load CO rated the effect of axial shell with self-aligning ball bearings table with groove in the rolling body contact the greatest bearing parts, the produced plastic deformation for total about one over ten thousand the diameter of the roller. Equivalent static load PO [KN] is a theoretical values, on to the heart bearings as is radial force, to thrust bearing axial and centripetal force will be. PO and groove in the rolling body the maximum load of the contact area center produced stress, part of the old and new code and the actual table bearing load combination produced have to stress the same.

PO = XO * F r + Ys * Fa [KN]

PO equivalent of static load, Fr radial load, Fa axial load, the unit is thousand Newton, XO radial coefficient, YO axial coefficient.



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