A 12 Horsepower motor has a speed of n=1790 rpm and drives a fan at 250 RPM

The sheave mounted on the motor has

Question

A 12 Horsepower motor has a speed of n=1790 rpm and drives a fan at 250 RPM. The sheave mounted on the motor has

4.2 pitch diameter. The service factor is 1.1 and the design factor is to be 1.0. The motor size is such that the distance C must be no less than 45 in. Fully specify an appropriate v-be drive and estimate life in both passes and hours. Choose a solution that keeps center distance as close to 45 in as possible without going under. Be sure to identify all work.

The book is Shigley’s Mechanical Engineering Design

Mechanical Engineering