A truncated conical pivot bearing which supports an axial load of 20000N from a vertical shaft rotating at 180 rpm has a cone angle of 120°. Its larger diameter is 2.5 times its smaller diameter. The normal pressure on the bearing is not to exceed 36 N/cm. Determine the dimensions of the bearing. If the coefficient of friction is 0.05 for the bearing surface, find the power lost in overcoming the friction.

A truncated conical pivot bearing which supports an axial load of 20000N from a vertical shaft rotating at 180 rpm has a cone angle of 120°. Its larger diameter is 2.5 times its smaller diameter. The normal pressure on the bearing is not to exceed 36 N/cm. Determine the dimensions of the bearing. If the coefficient of friction is 0.05 for the bearing surface, find the power lost in overcoming the friction.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.72P

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