The figure shows a gear-driven squeeze roll that mates with an idler roll. The roll is...

  

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The figure shows a gear-driven squeeze roll that mates with an idler roll. The roll is designed to exert a normal force of 250 lbf and 300 lbf of pull on the material being processed. The roll speed is 21000 rev/hour, and a design life of 30 kh is desired. Use an application factor of 1.3. (All the dimensions in the figure are in inches) 1. Select a pair of angular-contact 02-series ball bearings to be mounted at 0 and A with a combined reliability of at least 0.92. (Marks 5) 2. In addition to the above loads there is an axial load of 150 lbf that is acting in the positive x direction, suggest bearings to be used both at location O and A.(Marks 5) 4 dia, 200 Goar 4 3 dia. The figure shows a gear-driven squeeze roll that mates with an idler roll. The roll is designed to exert a normal force of 250 lbf and 300 lbf of pull on the material being processed. The roll speed is 21000 rev/hour, and a design life of 30 kh is desired. Use an application factor of 1.3. (All the dimensions in the figure are in inches) 1. Select a pair of angular-contact 02-series ball bearings to be mounted at 0 and A with a combined reliability of at least 0.92. (Marks 5) 2. In addition to the above loads there is an axial load of 150 lbf that is acting in the positive x direction, suggest bearings to be used both at location O and A.(Marks 5) 4 dia, 200 Goar 4 3 dia.