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Rated Bearing Life in Hours is defined as the amount of time in hours the bearing takes to reach its failure. It is calculated based on the rated bearing life in million revolutions and the operating speed of the bearing.
The calculator uses the formula:
Where:
Explanation: This formula converts the rated bearing life from million revolutions to hours based on the operating speed of the bearing.
Details: Calculating bearing life in hours is crucial for maintenance planning, predicting equipment reliability, and determining appropriate replacement intervals for bearings in mechanical systems.
Tips: Enter the rated bearing life in million revolutions and the bearing speed in rpm. Both values must be positive numbers greater than zero.
Q1: What is L10 bearing life?
A: L10 bearing life is the number of revolutions that 90% of a group of identical bearings will complete or exceed before fatigue failure occurs.
Q2: Why convert bearing life to hours?
A: Converting to hours provides a more practical measure for maintenance scheduling and equipment reliability assessment in real-world applications.
Q3: What factors affect bearing life?
A: Load, speed, lubrication, operating temperature, contamination, and installation quality all significantly affect actual bearing life.
Q4: Is this calculation accurate for all bearing types?
A: While the basic principle applies to most rolling element bearings, specific bearing types may have additional factors that should be considered for precise life estimation.
Q5: How often should bearings be replaced?
A: Bearings should be replaced based on calculated life, vibration analysis, temperature monitoring, and regular inspection results rather than just time-based intervals.