Mystery Arbor

jcraigie · Post by **jcraigie** » Thu Mar 17, 2011 11:10 pm

I have an arbor that came with my Greenie that I just found rolling around in the truck. I'm not sure which arbor it is, anyone got an answer?[ATTACH]12293[/ATTACH]

[ATTACH]12294[/ATTACH]

heathicus · Post by **heathicus** » Thu Mar 17, 2011 11:52 pm

I'm pretty certain that's not a SS specific arbor. It's a generic arbor and you can still get one like it at Lowes. Maybe designed for adding a buffer wheel or grinder wheel to an electric motor? They usually come with a couple of flanges too.

EDIT: Here's one at Amazon: http://www.amazon.com/Work-Arbor-Fits-D ... pd_cp_hi_1
"Work Arbors attach directly onto motor shafts for attaching abrasive, wire, and cloth polishing wheels."

peterm · Post by **peterm** » Fri Mar 18, 2011 10:07 am

FWIW, I found that type of arbor is a pain to use on the SS because if you back the set screw out a little too far, it falls out and disappears at light speed into some far corner. The set screw is also not the SS standard. To solve the problem I turn a steel ring roughly 1.5" diameter by 0.6" wide and press it onto the body and drill and tap for a SS std. set screw. Looks like this when done:
[ATTACH]12296[/ATTACH]

SDSSmith · Post by **SDSSmith** » Fri Mar 18, 2011 10:20 am

Also known as a motor arbor and come in LH and RH versions.

ddvann79 · Post by **ddvann79** » Fri Mar 18, 2011 10:56 am

jcraigie,

I have one that looks just like that, although not in nearly as good of condition. It came in a box with other odds and ends that contained a mixture of MK 5 and 10er parts. My guess it was designed for the 10er. Mine had an abrasive wheel mounted when I got it, although it also had two stabilizer washers on each side of the wheel.

heathicus · Post by **heathicus** » Fri Mar 18, 2011 11:06 am

If it has 2 set screws, it wasn't designed for the Shopsmith (MV or 10ER). Shopsmith arbors have one set screw designed to work with the flat "reverse taper" on the spindle. An arbor with 2 set screws is generic for use on any motor shaft (with matching diameter) that may not have a flat (tapered or not). The second set screw is to give additional gripping power on the spindle.

jcraigie · Post by **jcraigie** » Fri Mar 18, 2011 12:58 pm

Thanks guys.

I was thinking it was maybe for the grinding wheel. I'll put it aside to be used or "re-purposed" later. I'm thinking it might be good to use for a buffing wheel.

JPG · Post by **JPG** » Fri Mar 18, 2011 2:51 pm

jcraigie wrote:Thanks guys.

I was thinking it was maybe for the grinding wheel. I'll put it aside to be used or "re-purposed" later. I'm thinking it might be good to use for a buffing wheel.

FWIW: More likely a sears craftsman product.

You could drill and tap the outer set screw hole to 5/16-18 and use a 'SS' setscrew(round or flat bottom).

Definitely get washers prior to use!!!!!!!