[F15pilot]

Maybe I didn't notice it over the winter but my air-cooled Perske 2.2kw spindle is getting quite warm. I am running it at 18,000 rpm and the fan atop the spindle is moving a good amount of air with no obstructions. The temp gun is reading 135*F when pointed at the main case of the spindle.

It is 95*F here in Burlington, NC. Is this normal? Are the bearings possibly going bad? I don't hear any grinding noises but the heat concerns me.


I don't want to burn up the spindle because I just called and got a repair and/or replace quote from Perske and I wanted to fall over.

[F15pilot]

Spindle plate says 40*C or 104*F but like I said, it is quite warm here.

[bhurts]

I'm near winston and had the same concerns. You can add some high flow pc fans that are aimed at the hottest point of the housing. That may or may not work. It would be best to keep the machine in a controlled environment where the temperature is 70-80f max. I know this is not always possible. I came up with a slightly more complicated solution. It cost me about 100 dollars to implement. I used a corsair h100i pc water cooler with the fans blowing onto the spindle body and the heatsink mounted to the hottest part of the housing. It keeps the temperature of the spindle to around the same as ambient.

Ben