CNC Milling Machine Spindle [Complete DIY Guide
That's the sort of construction used in a Bridgeport milling machine or many Chinese Import machines such as the RF-45, for example. Cartridge Spindles. Tormach BT-30 CNC Spindle Cartridge… Cartridge Spindles are what pretty much every modern VMC uses. They're convenient to swap out and rebuild while keeping the machine going, they're more convenient …