High-speed spindle motors, regardless of light metal machining or heavy metal machining, are selected based on the material being machined. The reason for choosing 24000~6000 rpm to process high-density materials is because the material density is high and the hardness is high, and the low-speed processing will cause the burrs and the surface is not smooth. The reason for choosing 3000~24000 rpm to process low-density materials is because high speed can cause cracking of low-density materials. So when choosing a high-speed spindle, the first choice is its speed.
Choosing the right spindle is especially important for machining. If you need to choose a spindle for the engraving machine, I have the following products from ATC-Spindle.com to recommend to you:
9KW ATC Air Cooled Spindle Automatic Tool Change Spindle ISO30 220V 380V for CNC Router
7.5kw ATC Air Cooled Spindle Automatic Tool Change spindle ISO30 380V for CNC Router
4.5KW ATC Air Cooled Spindle Automatic Tool Change Spindle ISO30 220V 380V for CNC Router