Work Light Phasing With Spindle RPM

In this Haas Service Tip, Service Engineer Brian Dickenson covers a topic that has caused confusion. If you've ever looked at your spindle turning and thought it looked like it was the wrong RPM, or maybe even thought it was running backwards, odds are it is simply in synch with your LED work light. That's right, it's all an optical illusion and there is nothing wrong with your spindle.