2.2kw spindle Heating Up

[EddyCurrent]

There's also a startup regime to protect the bearings, for my spindle this is;

4 minutes at 25% max speed
3 minutes at 50% max speed
3 minutes at 75% max speed
2 minutes at max speed
until the spindle reaches 35 deg.C

This is not a Chinese water cooled spindle it's an air cooled Italian spindle but as it's to do with the bearings it should apply to all spindles that run above 3000 rpm (so the manual says)

The routine shoild be carried out each time you start it up at the beginning of the day or if it cools to room temperature.
I wrote some simple G code and called it 'spindle_warmup', it goes through the routine above.