In the following problems, it is assumed that the bearing has but one row of balls. A working year will be taken as 250 days.
A ball bearing carries a load of 2000 lb at 1760 rpm for 0.4 of the time and a load of 1000 lb at 880 rpm for the remainder of the time. Life is to be 10 yr at 6 hr per day. Find the minimum value of the basic rating load C that the bearing must have. Loads arc steady.
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