Cable drum for a crane is to rotate

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Reference no: EM13714144

A cable drum for a crane is to rotate between 160 and 166 rpm. Design a gear drive for 25 hp in which the input pinion rotates at 925 rpm and the output rotates with the drum. The crane is expected to operate with a 50% duty cycle for 120 hours per week for at least 10 years. The pinion and the gear drive must fit within the 24-in inside diameter of the drum, with the gear mounted on the drum shaft. Assume that a number of pinion teeth, Np=17 and rim thickness factor (KB), a service factor (SF) and a reliability factor (KR) are equal to 1.00 for both pinion and gear. Perform stress analysis (bending and contact) for both pinion and gear and determine required hardness (HB) values.

Reference no: EM13714144

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