Hi-

I am the owner of two older Fanuc controlled machine tools. I am facing a problem since the past month. In the machine program I set the spindle speed value to 2500 rpm but spindle is gradually slowing day to day. Every day the spindle slows like 2400, 2250, 2000.

If anyone can help me to solve this problem please do.

Thank You.

 

Please check the control voltages.