Answer Happy

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, 0 = 4.459, and b = 1.483. The following information is given for your calculation. Rotation Radial Load on Design life of the Reliability of the Application speed of the pulley, F, ball bearing ball bearing factor, af the pulley 1,725 rpm 800 lbf 1,800 hours 90% 1.5 a) Calculate the catalog rating Co 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. (15 points) Radial load F, Nonrotating shaft of circular cross section Bearing = RE RR 8 in 16 in.