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A ball bearing carries a load of 1000 N at 1760 rpm for 0.4 of the time and a load of2000 N at 880 rpm for the remainder of the time. Life is to be 10 years at 6 hours per day. Find the minimum value of the basic rating load C that the bearing must have. Loads are steady. (it is assumed that the bearing has but one row of balls. Aworking year will be taken as 250 days.)   Ans. C = 16,430 N

A ball bearing carries a load of 1000 N at 1760 rpm for 0.4 of the time and a load of2000 N at 880 rpm for the remainder of the time. Life is to be 10 years at 6 hours per day. Find the minimum value of the basic rating load C that the bearing must have. Loads are steady. (it is assumed that the bearing has but one row of balls. Aworking year will be taken as 250 days.)   Ans. C = 16,430 N

Elements Of Electromagnetics
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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A ball bearing carries a load of 1000 N at 1760 rpm for 0.4 of the time and a load of2000 N at 880 rpm for the remainder of the time. Life is to be 10 years at 6 hours per day. Find the minimum value of the basic rating load C that the bearing must have. Loads are steady. (it is assumed that the bearing has but one row of balls. Aworking year will be taken as 250 days.)

 

Ans. C = 16,430 N

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