Re: [CAD_CAM_EDM_DRO] boring a timing gear

turbulatordude wrote:

>I have a 24 tooth nylon timing gear that has a 1/2 dia aluminum hub
>thru the center and a 1/4 inch bore.
>
>I'd like to open it up to a 3/8 bore to fit my NEMA34 single stack
>stepper to drive a 72 tooth pulley on my drill press.
>
>The setscrew is in a hub that is 0.875 inch dia so the screw will
>have enought grab.
>
>I am not sure if the 0.062" wall is too thin.
>
>

It depends on how much of a load you are going to put on it. If it will
be lightly loaded
(by the setscrew, belt torque, and belt tension) it should work. If you
will be running it hard,
it may swell the remaining hub and eventually cause the Nylon to crack.

Jon