I’m using an [GMT Air Cooled CNC Spindle 0.8 kW] spindle with a [Delta VFD-M / Inverter 0.75kW 110V]
both from UgraCNC.com.
I’ve improved the mounting since this picture was taken. It is now mounted using the [Spindle Mounting Plate] and two [DeWalt DW660 Spindle Mount] brackets from Inventables. I did have to file away about 1mm of heat sink on each side of the spindle to make it fit in the brackets. Alternatively, one could file the brackets instead.
This spindle is quiet, strong, and has low runout. I also like the ability to adjust spindle speed on the fly with a knob on the drive controller.
