Understanding teeth, and matching synchronous pulleys of different sizes 1

[BurningKrome]

Perhaps this question is so obvious, that I can't find a tutorial online. I have a 10mm motor shaft and a 15mm spindle shaft. I'm trying to match a pulley system with a ratio of ~2:1 (the smaller pulley on the motor.)

I don't know how to find two matching pulleys. I vaguely understand the idea of tooth pitch, pitch diameter, etc. and - from what I understand - the number of teeth will determine if the belt will fit both pulleys.

More specifically, I really don't understand what to look for in the description of the teeth to ensure the belt will fit both pulleys.

So, Is it as simple (for example) as finding two GT2 pulleys - one with 10 teeth and one with 20? Is that, alone, enough information to match the both pulleys to the belt?

 

[GregLocock]

Yes, the tooth profile is defined by the terms GT2 and (say) 3mm, although so long as the pulley is wider than the belt that doesn't really matter. So you need one with N teeth on it with a dia 10 hole, and the other will have 2*N teeth and a dia 15 hole.

https://www.sdp-si.com/products/GT-Timing-Belts-and-Pulleys.php

should get you going


Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?