Replies

1. 
   EdK | Jan 07, 2003 12:20am | #1

   I'm thinking no. The speed reducers are designed for DC and universal motors and not for AC motors which bench grinders usually have. I don't know if you'd goof up your reducer but you might. Consider buying a slower speed grinder, 1725 rpm. I've seen them for about $70 and then you'd have 2 grinders. Or a grinder head that you can pulley to a DC motor that you can control speed.

   Ed K.

2. 
   dmt | Jan 07, 2003 09:48pm | #2

   No. Induction motors, as used on most shop machines, are fixed speed motors. A 60-Hz 2-pole motor will run at a no-load speed of about 3600 rpm, but as the load increases the motor will slow to a full-load speed of about 3450 rpm. Speed adjustments must be made mechanically, such as on a lath or drill press.

3. 
   TooManyTools | Jan 08, 2003 07:26am | #3

   No but Woodcraft has a two speed grinders that works well.

   http://shop.woodcraft.com/Woodcraft/product_family.asp?family%5Fid=3731&gift=False&0=dept%2Easp%2Cdept%5Fid%3D10000%26Tree%3D%2CDepartments&1=dept%2Easp%2Cdept%5Fid%3D1021%26Tree%3D0%2CSharpening&2=dept%2Easp%2Cdept%5Fid%3D2054%26menu%5Fid%3D%26Tree%3D1%2CGrinders%20%2D%20Sharpening&Gift=False&mscssid=0F2C879E647C24EB992E9D7CD2CBD7FB