Predict a ball bearing's rating life from its load rating, load and speed — in million revolutions, in hours, and adjusted to 99% reliability — then pick the strongest life lever.
📋 Scenario
A pump bearing is failing sooner than planned and you are setting a maintenance interval for a critical machine where you want 99% survival, not the standard 90% (L10). Use the catalogue rating and measured load/speed, then apply the reliability factor a₁ = 0.21.