High speed spindle for Sieg X1

[russell]

I was willing to take a chance on 2.2KW bettering the X1's 150W in most applications.

I wouldn't be so sure. From basic physics Torque is proportional to Power/rpm. So the X1's 150W will give approximately 60% more torque at 1000 rpm on it's low gear than a 2.2 kW spindle running at 24000 rpm (assuming similar efficiency). Of course, how well it behaves at lower speed will depend on the motor and controller design.

Russell.