View Full Version : Foot control switch

joe sangster
07-29-2010, 06:21 PM
Rob ,

Will a foot control switch work on my new variable speed grinder ? If it will , where are they obtainable ?


Wayne Coe
07-30-2010, 04:56 AM
All of the foot control switches that I have seen are for 100v applications. I have one on my drill press and suggest that everyone have one. I suggest the momentary on type. These are only on while you are stepping on it. Harbor Freight has both the momentary on and the on/off in which you press to turn it on and press again to turn it off. They are about $20.00.

If you have a 110v machine or can find a 220v switch I don't know why it wouldn't work. It's just a switch.

joe sangster
07-30-2010, 06:37 AM
I tried HF but they either did not have them, or didn't know what I was talking about . Know of any other sources ?


Wayne Coe
07-30-2010, 08:17 AM
I did a search for "switch" and found them on Harbor Freight.
<LI class="item first" done2="344">
http://www.harborfreight.com/media/catalog/product/cache/1/small_image/175x/9df78eab33525d08d6e5fb8d27136e95/i/m/image_3627.jpg (http://www.harborfreight.com/power-maintained-foot-switch-96618.html)

<LI class="item " done2="348">Power Maintained Foot Switch (http://www.harborfreight.com/power-maintained-foot-switch-96618.html)

Item #96618
Add to Cart
<LI done2="350">Add to Wishlist (http://www.harborfreight.com/wishlist/index/add/product/3551)
Add to Compare (http://www.harborfreight.com/catalog/product_compare/add/product/3551/uenc/aHR0cDovL3d3dy5oYXJib3JmcmVpZ2h0LmNvbS9jYXRhbG9nc2 VhcmNoL3Jlc3VsdC9pbmRleC8_Y2F0ZWdvcnk9JnE9c3dpdGNo/)

<LI class="item last" done2="352">http://www.harborfreight.com/media/catalog/product/cache/1/small_image/175x/9df78eab33525d08d6e5fb8d27136e95/i/m/image_3628.jpg (http://www.harborfreight.com/momentary-power-foot-switch-96619.html)Momentary Power Foot Switch (http://www.harborfreight.com/momentary-power-foot-switch-96619.html)

Item #96619
Add to Cart

<LI class="item last" done2="352">They are less expensive than when I saw them before. If you can't hyperlink on the above try this link:

<LI class="item last" done2="352">http://www.harborfreight.com/catalogsearch/result/?category=&q=switch

joe sangster
07-31-2010, 05:42 AM
Thanks , Wayne !


07-31-2010, 09:19 AM
Are you wanting it for speed control or just on/off?

joe sangster
08-01-2010, 08:32 AM

08-02-2010, 08:39 AM
Rob ,

Will a foot control switch work on my new variable speed grinder ? If it will , where are they obtainable ?


Sorry for the slow reply Joe,

Yes! A foot pedal will work on you grinder. The controller makes it nice to install a foot switch. The idea is to leave the controller powered "on" all the time. Then use the foot switch operating a low voltage, low current "signal" to start the grinder. When the controller get the "signal"..then it runs the motor.

All of the industrial suppliers will carry foot switches. (Grainger, Mc Master, MSC..etc.). You will want one that is Normally Open (NO) so that when you step on it, it becomes closed.

Look on the circuit board of the KB drive.....near the upper left corner and find the White jumper wire with blue connectors that goes from "COM" to "FWD".

Imagine that this jumper wire is a switch. When it is connected, the switch is closed and the grinder will run....if you disconnect it, the switch will be open and the grinder will stop.

Pretty easy so far..right? Simply remove this jumper and connect your foot switch in it's place. When you step on the switch, the circuit is closed just as if the jumper wire has been installed. When you lift your foot, the circuit opens...just as if you removed the jumper. Yes, it is really that simple.

I hope this helps.


Steven Kelly
08-03-2010, 07:29 AM
I have a foot switch hooked up on my KMG 9" vfd disk grinder. Anyone who isn't using one is really missing out on the full potential of the machine........

Shawn Knowles
09-23-2010, 02:30 PM
Another Inexpensive option is to look at tattoo supply houses for the footswitch.

I agree with steven it really is a great accesory for the 9" disk.