The life (L) of a radially loaded spherical ball bearing can be estimated from equation (2) given below. Experimental testing of the mechanism has determined that the average radial load that the bearing will be subjected to is F = 8.34 [kN] based on 6 repetitions of the test. If the rated load of the bearing is C = 8.25 [kN] and the life (in number of revolutions) at the rated load is given as LR = 9 x 107 [rev], determine the expected life of the bearing in revolutions [rev] and determine the total uncertainty of that result at 95% probability. Show the units analysis of the resulting uncertainty. 3.33 LR L (2)

The life (L) of a radially loaded spherical ball bearing can be estimated from equation (2) given below. Experimental testing of the mechanism has determined that the average radial load that the bearing will be subjected to is F = 8.34 [kN] based on 6 repetitions of the test. If the rated load of the bearing is C = 8.25 [kN] and the life (in number of revolutions) at the rated load is given as LR = 9 x 107 [rev], determine the expected life of the bearing in revolutions [rev] and determine the total uncertainty of that result at 95% probability. Show the units analysis of the resulting uncertainty. 3.33 LR L (2)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

The life (L) of a radially loaded spherical ball bearing can be estimated from equation (2) given
below. Experimental testing of the mechanism has detemined that the average radial load that the
bearing will be subjected to is F = 8.34 [kN] based on 6 repetitions of the test. If the rated load of
the bearing is C = 8.25 [kN] and the life (in number of revolutions) at the rated load is given as
LR = 9 x 107 [rev], determine the expected life of the bearing in revolutions [rev] and determine
the total uncertainty of that result at 95% probability. Show the units analysis of the resulting
uncertainty.
3.33
L =
LR
(2)
F = 8.34 [kN], BĘ = 0.11 [kN], SF = 0.26 [kN], N = 6

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