A ball bearing operates on the following work cycle: Radial load (N) 3000 7000 5000 Element No. 1 2. 3. Speed (R.P.M.) 720 1440 900 Element time (%) 30 40 30 The dynamic load capacity of the bearing is 16 600 N. Calculate 1. the average speed of rotation; 2. the equivalent radial load ; and 3. the bearing life. [Ans. 1062 r.p.m.; 6.067 kN ; 20.5 × 106 rev]

A ball bearing operates on the following work cycle: Radial load (N) 3000 7000 5000 Element No. 1 2. 3. Speed (R.P.M.) 720 1440 900 Element time (%) 30 40 30 The dynamic load capacity of the bearing is 16 600 N. Calculate 1. the average speed of rotation; 2. the equivalent radial load ; and 3. the bearing life. [Ans. 1062 r.p.m.; 6.067 kN ; 20.5 × 106 rev]

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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