JGL-200 7.5KW 3000rpm 9000rpm BT40 Automatic Tool Change Motor Spindle Jianken is a professional manufacturer specializing in various spindle motors for 15 years. JGL series is Pneumatic Automatic Tool Changer used in CNC machines. JGL-150/7.5R9-12-40: 150 means outer diameter of the spindle is 150mm 7.5 means power is 7.5kw