(Solved): A rotating shaft with a diameter of D=20mmD=20mm is supported by a cylindrical roller bearing and ...

A rotating shaft with a diameter of D=20?mmD=20mm is supported by a cylindrical roller bearing and a deep groove ball bearing. The shaft is subjected to an oblique force as shown in the figure below. Refer to the table on the last page to determine the specific variant of the problem you should calculate. Dimensions, the force PP, rotational speed, and the model of the ball bearing are given in the table. Tasks: a) Calculate the radial and axial loads for the deep groove ball bearing. b) Calculate the radial load for the roller bearing. c) Calculate the nominal lifespan of the deep groove ball bearing. Provide the answer both in terms of millions of revolutions and operating hours. d) Select a roller bearing (of model variant N or NU) so that the lifespan of the roller bearing is approximately the same as that of the ball bearing.