Nervis1,
You might find a label on the spindle motor that has a rating for temperature rise above ambient temp, it might be 40°C for example. That means 40°C more than room temp. They can stand a lot of heat. There may also be an insulation temperature rating on the motor, which could be well above boiling point!
As far as spindle temp, it sounds like your machine runs very cool. On a long session, I see temps of 125°F on my quill type spindle. A machining center has no quill, so you need not worry like I do about the quill getting "stuck" in the housing bore if it gets too large from heat expansion.
__________________
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |