Mechanics and Construction > Mechanics and Construction

Gears

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Stoyboy:
I know i am kinda new here but i didnt know where else to ask this question so here goes.

Is there such a gear that has teeth both on the outside and on the inside of the gear, i have looked online and i have no idea where to find them if they exist.

Admin:
not to my knowledge . . . if one does exist, its probably rare and expensive . . .

unless a planetary gear or harmonic drive gear counts . . .

a timing belt can have teeth on the inside and outside . . .

what are you trying to do?

JonHylands:
The specific kind of gear you're looking for is a ring gear. There seems to be two types, internal and external.

If you could find one of each that were the appropriate size, you could join them to form what you're asking for...

These guys seem to have both kinds: http://www.sdp-si.com/eStore/CoverPg/Gears.htm

Specifically:

https://sdp-si.com/eStore/Direct.asp?GroupID=225
https://sdp-si.com/eStore/Direct.asp?GroupID=203

You might be able to find a pair that would fit together...

- Jon

annoyin_kid:
how would you connect the gear to the shaft if there are teeth on the outside and the inside?

polar bear6:

--- Quote from: annoyin_kid on January 31, 2007, 11:50:22 AM ---how would you connect the gear to the shaft if there are teeth on the outside and the inside?

--- End quote ---

i want to know that too :P

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