Homework Assignment $11$: Chapter $11$: Ball and Roller Bearings

A worm shaft transmits $2\mathrm{.}0$ hp at $400$ rev: min. A static force analysis shows that a radial force of $60$ lbf is applied at support A and a radial force of $100$ lbf and a thrust force of $210$ lbf are applied at support B$.$ It is planned to select a $02-36mm$ straight roller bearing at Support A and an $02-60mm$ angular contact ball bearing at Support $B.$ Is this a sutable choice for the desired life of $30$ kh with an overall reliability of $R=0\mathrm{.}99?$