What is the life calculation of a rolling element bearing called?

The life calculation of a rolling element bearing is referred to as L10, which represents the number of hours at a given load that 90% of a group of identical bearings will still be operational. This measurement is based on the concept of reliability in bearing performance, allowing engineers and maintenance professionals to predict how long a bearing will function effectively under specified conditions.

The L10 life is crucial as it helps in evaluating the longevity of bearings used in various applications, ensuring reliability and minimizing unexpected failures. The L10 value is commonly derived from the bearing's dynamic load rating and the applied load, following established formulas that account for these parameters.

Understanding L10 is essential for proper maintenance planning and operational efficiency, enabling technicians to schedule timely replacements and avoid unscheduled downtimes due to bearing failures.