Double air cooling spindle with seamless steel structure welding offers excellent stability and resilience can drill side hole of the material. Two spindles can function separately/synchronously. Spindle equipment is first world brand among China manufactured air cooling spindle. Owing to different axes, it adopts high precision, rack and pinion transmission, high efficiency and low cost with compatibility to CAD/CAM designing software-Type3, Artcam/Castmat/Wentai etc. Its function includes forecasting process time, re-carving after break point and power failure. It can be operated offline without any computer source. It adopts advanced DSP system with USB connection and also can be operated conveniently with handle.