FILENAMES: r8taper.jpg DESCRIPTION: Scanned image of a dimensional drawing of an R8 toolholder. Posted by John Stevenson . John provided the following description: ================================================================= >On Tue, 11 Aug 1998 17:05:23 GMT, bheuver@e-mail.com (Brad Heuver) wrote: > >>I am looking for the dimensions for the female (socket) of an R-8 >>spindle. Scott Logan's web page has the dimensions for the collet >>back bearing area, 0.950". > >On 11 Aug 1998 18:31:29 GMT, ssl@loganact.com (Scott S. Logan) wrote: >This is not a complete answer, but perhaps a start. > >The R-8 Spindle Taper is based on the #30 Milling Machine Taper. The gage line >is 1.250" dia., taper is 3.500 inches per foot. > >Hope someone comes up with complete specs. > This is a question that arises every so often. All the spindle Tapers are listed in the Machinery Builder Handbook I have scanned in the relevant page and posted it to the drop box under r8taper.jpg and copy of this post under r8taper.txt. I am also posting this to Scott Logan it see if he wants to add it to his page.