Please recommend limit switches

[Mr.Chips]

The switches I used and most of the switches I see being used are not sealed. How long will these switches function being used in all the dust?

Anyone have any longevity data on these unsealed switches when used in a typical CNC dust situation?

And yes they are used in the normally closed position however dust can still cause them to malfunction.

Hager

[CNCRob]

Originally Posted by Mr.Chips The switches I used and most of the switches I see being used are not sealed. How long will these switches function being used in all the dust? Anyone have any longevity data on these unsealed switches when used in a typical CNC dust situation? And yes they are used in the normally closed position however dust can still cause them to malfunction. Hager

Thats something I have been concerned about also. I have been using mine for almost 2 years without any problems. Knock on wood. I have broke a couple when I turned my limits off and then over shot the limit, with out thinking I reveresed direction bending the little metal piece on top and I even broke part of the casing on another doing that. I have been looking for a small version of the ones on my machine at work. That are entirely covered in rubber. So not much dust would get into them and it would be pretty hard to break it. I guess those would be pretty expensive, Im not sure though.

[truman]

I bought these ones http://www.cnc4pc.com/Accessories.htm

[Shawn Lucas]

Thanks Guys!

I am on it.

[Mr.Chips]

Originally Posted by CNCRob Thats something I have been concerned about also. I have been using mine for almost 2 years without any problems. Knock on wood. I have broke a couple when I turned my limits off and then over shot the limit, with out thinking I reveresed direction bending the little metal piece on top and I even broke part of the casing on another doing that. I have been looking for a small version of the ones on my machine at work. That are entirely covered in rubber. So not much dust would get into them and it would be pretty hard to break it. I guess those would be pretty expensive, Im not sure though.

Thanks Rob.

Two years is good enough for me.

Hager