3kw 1050kv 24v water cooled brushless motor.
3x 7204 angular contact bearings.
1x 46mm OD wave spring washer.
Main housing is 60mm.
I'll add a water cooling jacket to the main housing so it'll have 2 cooling jacket. One for motor and one for main housing.
Collet chuck shaft diameter is 20mm and length is 100mm.
There is a one way bearing inside the collet shaft. I've added this to connect the motor shaft to the chuck shaft. OWB dimensions are 12mm ID, 18mm OD and 12mm length.

I'm not sure if I'll need to add an oil seal to the far bottom bearing. I'll gladly accept any suggestions.

Here is the design so far.