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Question: 6 a what are the advantages of rolling bearings over...

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6. a) What are the advantages of rolling bearings over plain bearings? (4 marks) b) Using diagrams describe the following bearing types: i) Single-Row Angular Contact Ball Bearings ii) Single-Direction Thrust Ball Bearings (2 marks) (2 marks) c) A single-row deep groove ball bearing has a basic dynamic load rating (Cr) of 29100 N. The radial load (F) on the bearing is 2000 N, and the bearing speed (n) is 1400 RPM. Calculate: i)The speed factor, f i) The fatigue life factor, f, ii) The basic rating life of the bearing in hours, L (2 marks) (2 marks) (2 marks) d) Outline the factors to be considered when determining the correct bearing to use in a particular application (4 marks) e) Give two possible causes of premature bearing failure. (2 marks)

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