Originally Posted by serviceman  150 degrees f on the inside of the taper is the cutoff then haas says that spindle is hot.... |
This is 65 degrees C and is hot enough that you can touch it for a short period of time but it will not burn you; that is the type of temperature I was meaning in my first post.
I am not sure I agree with serviceman's advise. Yes, you might learn that the spindle can run overnight without problems, or you might learn that it cannot. Coming in next morning to a pile of smoking scrap is not very helpful toward diagnosing the underlying problem.