CNCShop Spindle Motor CNC Spindle Motor 1.5kw Water Cooled Spindle Motor ER11 Collet Chuck(1.5KW Water Cooled Spindle Motor) This spindle motor speed:8000-24000 R/min The spindle motor's runout off: less than 0.005mm Collet: ER11(3.175mm,4mm,6mm) This spindle motor use water cooling Applied to Lathes, Mills,Car Hoists, Pumps & Conveyors, etc