The input speed of the worm shaft is 1200 rpm The worm wheel is made of phosphorbronze (sand cast), while the worm of casehardened carbon steel 10C4. The gear box for the worm gears has an effective surface area of0.25 m2. A fan is mounted on the worm shaft to circulate air over the surface of the fins. The coefficient of heat transfer can be taken as 25W/m2° C. The permissible temperature rise of the lubricating oil above the atmospheric temperature is 45° C. The coefficient of friction is 0.035 and the normal pressure angle is 20°. Calculate the power transmitting capacity based on thermal considerations.

The input speed of the worm shaft is 1200 rpm The worm wheel is made of phosphorbronze (sand cast), while the worm of casehardened carbon steel 10C4. The gear box for the worm gears has an effective surface area of0.25 m2. A fan is mounted on the worm shaft to circulate air over the surface of the fins. The coefficient of heat transfer can be taken as 25W/m2° C. The permissible temperature rise of the lubricating oil above the atmospheric temperature is 45° C. The coefficient of friction is 0.035 and the normal pressure angle is 20°. Calculate the power transmitting capacity based on thermal considerations.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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