Permissible Static Load Factor
The permissible static equivalent load of bearings varies depending on the basic static load rating and also the application and operating conditions.
The permissible static load factor f s is a safety factor that is applied to the basic static load rating. It is defined by the ratio in the equation. The generally recommended values of f s are listed in the table.
Conforming to the modification of the static load rating, the values of f s were revised, especially for bearings for which the values of C 0 were increased, please keep this in mind when selecting bearings.
where 
For spherical thrust roller bearings, the value of f s should be greater than 4.
| Values of Permissibile Static Load Factor f s |
| Operating Conditions |
Lower Limit of f s |
| Ball Bearings |
Roller Bearings |
| Low-noise applications |
2 |
3 |
| Bearings subjected to vibration and shock loads |
1.5 |
2 |
| Standard operating conditions |
1 |
1.5 |
|
