An angular-contact, inner ring rotating, 02-series ball bearing is required for an application in which the life requirement is 50 000 h at 480 rev/min. The design radial load is 610 lbf. The application factor is 1.4. The reliability goal is 0.90. Find the multiple of rating life xD required and the catalog rating C10 with which to enter Table 11–2. Choose a bearing and estimate the existing reliability in service.