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Question: a gear is mounted on a shaft that is supported...

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A gear is mounted on a shaft that is supported by 2 (directly mounted) tapered roller bearings equidistant to the gear in a precision gearing system. A radial load of 1850 N must be supported by each bearing. The right bearing will resist an additional thrust force of 1850 N. The set is required to achieve a total reliability R- 0.95. Knowing that this gearing system is used for aircraft engines and rotating at a maximum speed of 3000 rpm. A design engineer selected identical one row radial tapered roller bearings with cone and cup part number 30205; for both left and right sides. You have been asked to check if his selection is correct or not considering a conservative approach.

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