speed switch control of bench grinder
pgseabrook | Posted in Power Tools and Machinery on
can an accessory router speed switch be used to slow down a 6″ bench grinder? will finding out break something??!!
Replies
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.
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.
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
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