The figure shows a DB68126-JTEKT roller bearing with an inner diameter of the raceway as 61 mm, an outer diameter of 64.3 mm and a thickness of 20.92 mm. The rollers are 10 mm in diameter and 15.22 mm long. If both the raceway and the rollers are made of AISI 304 stainless steel with Young's Modulus of Elasticity 200 Gpa, Poisson's ratio 0.29, and the Brinell hardness number is 123, what is the design safety factor if the bearing is expected to operate for $10^8$ cycles when supporting a force of 100 N? Assume the width of the raceway the same as the rollers and loss of function is focused on the stress.
a) The design safety factor if loss of function is focused on the stress is (you will be required to submit your work)
? 2.29
? 1.38
? 0.36
? 3.15
