High torque mini DC motor ?

[sporgo]

Im looking for a motor or motor and planetary gear assembly of very small dimensions. The diameter of the assembly can be a maximum of 3/4" and a length of no more than 3". The motor or assembly needs a stall torque of no less than 44 in oz. I have looked around online quite a bit but the ones I see that would work are offered only from bulk dealers. Anyone know a good hobby supplier who stocks such a thing?

Thanks for the help guys.

 

[Boncuk]

Hi,

you might take a look at battery driven screwdrivers. They normally use a planetary reduction gear and they are smaller than you specified.

A cheap screwdriver is less than 5 EURO in Germany and you might salvage one of those.

Boncuk

 

[sporgo]

Good suggestion but no, those drive assemblies are to large. I already have one of them I have used for testing. Has the perfect amount of power but is just way to large.

 

[dknguyen]

THese are probably not planetary but they are inline...

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[sporgo]

Thats perfect dknguyen thanks very much. I dont know how I missed those I looked on that site earlier.

 

[Boncuk]

Hi dknguyen,

thanks for the hint. Just ordered two GM22 for my solar tracker. They are even much smaller than the screwdriver motors and gear.

 

[mikecurtin]

Thanks very much DKNguyen

This looks to be a very useful tip. Thanks again.