The equation for L10 Life
The equation for L10 life can be seen above, where speed is the shaft speed in RPM, Dynamic Capacity is the C value obtained from bearing manufactures catalogs, Equivalent radial load is the applied load that the bearing sees as a function of actual radial and axial loading as well as bearing geometry. For an advanced L10 bearing life calculation, multiply the result by aISO. By completing this equation, you should be able to calculate, with relative certainty, how many hours 10% of bearings will have failed under the calculated load. As the equation is theoretical, it cannot account for variables such as improper installation and maintenance, but it is a good way to determine an expected lifespan based on your specific application.
For more information on Rexnord Bearings such as installation manuals, videos and product specifications, click here.