A solid steel spindle shaft of circular cross section is to be used to support a ball bearing idler

 

A solid steel spindle shaft of circular cross section is to be used to support a ball bearing idler pulley. The inner race of the ball bearing is attached to the fixed non-rotating shaft. The rotating pulley is attached to the outer race of the ball bearing. The bearing is single-row 02-series deep- groove. Based on the preliminary stress analysis of the shaft, it must have at least a 1.63 inches outside diameter. The Weibull parameters are xo= 0.020, = 4.459, and b = 1.483.The following information is given for your calculation. Rotation speed of the pulley 1,725 rpm Radial Load on the pulley, Fr Design life of the ball bearing Reliability of the ball bearing Application factor,af 1,000 lbf 1,800 hours 90% 1.5 a) Calculate the catalog rating Cio for the ball bearing (10 points b) Select the smallest acceptable bearing (bore) from Table 11-2 (5 points) c) If the selected ball bearing in b) is used for this application, estimate the reliability of the selected ball bearing.(10 points) Radial load F Nonrotating shaft of circular cross section Bearing RL RR 8 in. 16 in.