I am trying to design a gearbox for a project i have.(adsbygoogle = window.adsbygoogle || []).push({});

I have calculated a fair few things about what i want to get from the gearbox, but now i have came to design the gear box i have got bogged down with all the various things, so help please if you can.

Data is

Input:7850 rpm

Output: 1975 rmp

Power that is transmitted is 29.75kw

Permissable bending stress is 380mpa and shear stress 280.

I am going to use a modulus of 3 for the gear tooth.

I want to use 4 gears, but little unsure on what gears to use? Application is to take a motion from an electric motor and output, much like a gearbox is a Drill.

I am a little unsure, well lost really, on how to calculate the ideal number of teeth for Gears 1, 2, 3 and 4, and there diameter and width.

Is there a minimum width to dia ratio?

Application is a small generator.

Thanks for any help.

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# Gear Box Design Help

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