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 500 lb at 880 rpm for 0.3 of the time and a load of 1000 lb at 440 rpm for the remainder of the time. Life is to be 6 years at 8 hours per day. Find the minimum value of the basic rating load C that the bearing must have. Loads are steady.
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