The Spindle break-in procedure is pretty simple and straight forward and may need to be done if sitting stagnant for a period of time or if in a colder climate.
The purpose of the break-in is to evenly distribute the lubricants and warm it up before being used.
6000 rpm for 20-30 min
9000 rpm for 20-30 min
12000 rpm for 20-30 min
18000 rpm for 20-30 min
24000 rpm for 20-30 min
First jog your spindle to a safe location, preferably without a bit installed before running.
Because we understand the risks of running gcode found on the internet, here it is in raw format with each lines meaning.
;Here is a g-code in raw format, and copy this section to notepad, then save it, and change the extension to match that of your controller's format.
M3; spindle rotate CW
S6000; speed 6k rpm
g4 p1200000; pause 20 minutes (20x 60000 milliseconds)
S9000
g4 p1200000
S12000
g4 p1200000
S18000
g4 p1200000
S24000
g4 p1200000
M5; spindle stop
We recommend if you own a water-cooled spindle motor. Run the first half of this break-in with the coolant pump turned off. This will help heat up your motor faster.