Re: [CAD_CAM_EDM_DRO] Gorton mill

On Wed, 23 Aug 2000 19:27:45 -0700, bfp wrote:

>
>the Hardinge collet catalog lists the folowing collets as having
>been used on Gorton mills
>
>collet ; back bering dia ; OAL ; thread ; Hardinge part#
>
>4NS ; .826 ; 3.5 ; .800x20RH ;1625
>
>9B ; #9B&S ; 4.125 ; 1/2-13RH; 1707
>
>GTM ; .625 ; 2.437 ; 7/16-20RH ; 1789
>
>R8 ; 950 ; 4.0 ; 7/16-20RH ; 1757
>
>looks like a match on the GTM Gorton taper with a max collet size of 1/2"
>it would take a lot of the material out to bring the spindle up to an R8
>but there is alot of tooling available with a 1/2" or smaller shank
>
>couldnt hurt to ask Hardinge about pricing and availability on the
>GTM collets
>http://www.hardingeworkholding.com/