MMD-45 Mill Tight Spindle

vendredi 17 octobre 2014

Yesterday I tried to use a new carbide milling cutter. I set the mill to the fastest speed of course. When I switched it on all I got was a hum from the motor. My first thought was a motor capacitor. I played around with turning power off and on etc with no change. I then started changing gears. I found that with a bit of hesitation it worked on the lowest gear and sounded normal. I then worked up thru the gears. With six gears, it worked on the lowest three and then with a bit more hesitation, the fourth gear. I have not been able to get the top two to work however.



I positioned the gear levers in a neutral position and turned the spindle by hand. It was certainly harder to turn than normal.



The spindle has always got a bit hot since new, but I have not checked it recently. I assumed it was just bedding in.



Any suggestions to assist with this issue would be greatly appreciated. Bearing Types? Adjustments?



Dean




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