Extra Fan For Sieg X2

jimbob

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So I keep hearing about the control box on the Sieg X2's mills going bad. What's the opinion on adding an extra fan in the control box and enlarging the air inlet holes? That would give me 2 fans and should run cooler.

I would like to do this on my Harbor Freight X2. Figure the more air moving the better. Heat is the usual problem and might ward off any future problems.
 
I would also add an air filter. I use to work on electronic organs and amps in general. Dust would accumulate on the heat sinks and act as insulation. Once in a while I would take the panel off and brush and blow the dust off. O' yeah, don't forget to turn the power off or better yet unplug it.
 
Well added 2 fans, 1 in the back and 1 in the side. Moves a lot more air and hope this will extend the life of the electronics.

Have done just about all the mods I can think of so far. If there is any interest in seeing them I will post some photos.
 
My observation of the Sieg 500 watt BLDC machines suggests that the powerboard isn't the problem, it's the motor itself. I added a large recycled aluminum heatsink to the outside of the motor, and it has helped a lot with the motor overheating problem. I usually run the boards at full power (or more) to stress test them and it is always the motor that overheats first.
 
I don't know if this will be helpful since the motor is part of a load cell for testing power boards. I 'McGuivred' a heat sink on one side of the motor with 2 steel wires, using a good helping of thermal grease between the sink and the motor shell. I would not recommend drilling into the case as the windings are pretty close to the outside of the case in several places, but you get the gist of how it works.
motor.jpg
 
I have a scrap motor here that was obviously overheated, based on the condition of the internal windings. Anyone considering using the machines continuously would be well advised to find a way to cool the motor as it has no internal fan or ventilation holes for air to circulate. In an effort to keep swarf out of the motor the designers created another problem.
 
I have a scrap motor here that was obviously overheated, based on the condition of the internal windings. Anyone considering using the machines continuously would be well advised to find a way to cool the motor as it has no internal fan or ventilation holes for air to circulate. In an effort to keep swarf out of the motor the designers created another problem.
When you say " continued use" how long were you using the mill in one cession before the motor got overheated? I do use my lms 3960 but no more than 30 minutes at a time but the motor never overheats or shuts down, could it have something to do with the depth of cut which could cause the motor to labour?
 
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