A new machine in the machine shop will use an 02-series 45 mm deep groove bearing and operate with varying loads and speeds. 5% of the time with radial load of 750 lb at 2000 rpm with low side of light impact 15% of the time with radial load of 375 lb at 2500 rpm with high side of moderate impact 35% of the time with radial load of 250 lb at 3000 rpm with low side of moderate impact 45% of the time with radial load of 150 lb at 3500 rpm with low side of light impact Estimate the life (in years) of this bearing if it is in continuous operation with 85% total machine reliability.
A new machine in the machine shop will use an 02-series 45 mm deep groove bearing and operate with varying loads and speeds. 5% of the time with radial load of 750 lb at 2000 rpm with low side of light impact 15% of the time with radial load of 375 lb at 2500 rpm with high side of moderate impact 35% of the time with radial load of 250 lb at 3000 rpm with low side of moderate impact 45% of the time with radial load of 150 lb at 3500 rpm with low side of light impact Estimate the life (in years) of this bearing if it is in continuous operation with 85% total machine reliability.
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 new machine in the machine shop will use an 02-series 45 mm deep groove bearing and operate with varying loads and speeds. 5% of the time with radial load of 750 lb at 2000 rpm with low side of light impact 15% of the time with radial load of 375 lb at 2500 rpm with high side of moderate impact 35% of the time with radial load of 250 lb at 3000 rpm with low side of moderate impact 45% of the time with radial load of 150 lb at 3500 rpm with low side of light impact Estimate the life (in years) of this bearing if it is in continuous operation with 85% total machine reliability.
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