Ball bearings are rated by a manufacturer for a life of $${10^6}$$ revolutions. The catalogue rating of a particular bearing is $$16$$ $$kN.$$ If the design load is $$2$$ $$kN,$$ the life of the bearing will be $$P \times {10^6}$$ revolutions, where $$P$$ is equal to ___________.

Which one of the following is criterion in the design of hydrodynamic journal bearings?

The basic load rating of a ball bearing is

To restore stable operating condition in a hydrodynamic journal bearing, when it encounters higher magnitude loads.