Question

For a ball bearing, the fatigue life in millions of revolutions is given by $L=\frac{C}{P}^n$, 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 racing is fixed and outer racing is revolving
• B. n = $\frac{1}{3}$, assuming that the inner racing is fixed and outer racing is revolving
• C. n = 3, assuming that the outer racing is fixed and inner racing is revolving
• D. n = $\frac{1}{3}$, assuming that the outer racing is fixed and inner racing is revolving

Answer 1

Answer: (C)

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

Answer 2

The correct option is (C): n = 3, assuming that the outer racing is fixed and inner racing is revolving