... cooling spindle,Easy to start up,low noisy. 3.Yako Stepper Driver--2811MA.Stable working.4.Guiders---Hiwin HG serise with 20mm ... ,5.5kw air cooling.Rotated DirectionRight Guider thickness20mm,Hiwin DriverYako Driver 2811MA TransmissionXY gears pinion,Z ballscrews Idling speed25000mm/min Code ...