Bearing Life Calculator
Calculate L10 bearing life in revolutions and hours using the ISO 281 basic rating life formula.
How to Use the Bearing Life Calculator
- Enter the dynamic load rating C from the bearing datasheet (kN).
- Enter the equivalent radial/axial load P (kN).
- Enter the operating speed in RPM and select the bearing type.
حالات الاستخدام
- •Selecting bearings for industrial gearboxes.
- •Predicting maintenance intervals for rotating machinery.
- •Comparing bearing sizes for a given design life.
الصيغة
L10 = (C/P)^p × 10⁶ revolutions. For ball bearings p = 3; for roller bearings p = 10/3. Life in hours = L10 / (60 × n).
الأسئلة الشائعة
What does L10 bearing life mean?
L10 is the number of revolutions (or hours) that 90% of a group of identical bearings will reach or exceed before fatigue failure.
What is the dynamic load rating C?
C is the load that a bearing can carry for one million revolutions with 90% reliability. It is listed in the bearing manufacturer's catalogue.
Is this calculator free?
Yes, all OhMyCalc calculators are completely free to use.