Question

A 10kW electric motor, which is running at 43 rev/s, is used to drive a crusher which operates 24 hours per day. An engineer has specified 212 mm and 315 mm pitch diameters for small pulley and large pulley respectively; and C 3454 V-belt type. a) What should be the conservative service factor for this belt and pulley system? b) Calculate the center distance between the pulleys? c) Calculate allowable power, design power and required number of belts. (Take design factor nd as 1.) d) Calculate centrifugal tension, forces at tension side and loose side, initial tension and factor of safety. (Take friction coefficient including wedge effect as 0.5123.)

Answer 1