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simke
Associate

Join Date: Jul 2008
Posts: 52

Planetary Gear Calculation

03/26/2019 3:06 PM

Dear all,

I have one question regarding planetary gear. I want to reduce from 170rpm on sun gear to 10rpm in ring gear. How can I achieve this ration to ring gear?

Is there a formula that could help me to solve this problem or some document that I can try to learn about planetary gear

I saw a lot of video on youtube but I don't know how to solve for this specific example

Sun gear is a diameter of 70mm, ring gear should not be more then 195mm(smaller is better)

Thank you for your replies
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Pathfinder Tags: gear gear ration planetary gear
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SolarEagle
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Join Date: Mar 2007
Location: by the beach in Florida
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Good Answers: 1817
#1

Re: Planetray Gear Calculation

03/26/2019 3:51 PM

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Floram
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Join Date: Feb 2008
Posts: 353
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#2

Re: Planetray Gear Calculation

03/26/2019 10:25 PM

That is a 17:1 reduction ratio where a two stage planetary is needed or another kind of gearing.

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SolarEagle
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#3

Re: Planetray Gear Calculation

03/26/2019 11:06 PM

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SolarEagle
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#4
In reply to #3

Re: Planetray Gear Calculation

03/26/2019 11:27 PM

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simke
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Join Date: Jul 2008
Posts: 52
#5
In reply to #3

Re: Planetray Gear Calculation

03/28/2019 2:41 PM

Thank your for the reply.

I saw this video but still I try to solve mathematical calculation but don't understand how to do it. Do you have any idea how to calculate it?
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