Question

For a ball bearing, the fatigue life in million revolutions is given by L=(C/P)n where P is the constant applied load and C is the basic dynamic load rating. Which one of the following statements is true

• A. n = 3 assuming that the inner race is fixed and outer race is revolving
• B. n = 1/3 assuming that the outer race is fixed and inner race is revolving
• C. n =$\frac{1}{3}$ assuming that the inner race is fixed and outer race is revolving
• D. n = 3 assuming that the outer race is fixed and inner race is revolving

Answer 1

Answer: (D)

n = 3 assuming that the outer race is fixed and inner race is revolving

Answer 2

The correct answer is (D):
n = 3 assuming that the outer race is fixed and inner race is revolving