Bearing Life Equation

• Bearing life equation is:
  L10 = (C / P)10/3 × (B / n) × a
  L10 in hours
• Where:
  C = radial rating of the bearing in lbf or N
  P = radial load in lbf or N.
  B = factor dependent on the method; B = 1.5 × 106 for the Timken method (3000 hours at 500 rev/min) and 106 /60 for the ISO method
  a = life adjustment factor; a = 1, when environmental conditions are not considered ;
  n = rotational speed in rev/min.