1. Using P4 grade centripetal anti-thrust ball bearing greatly improve the strength and rigidity of electro-spindle, and its speed can up to 12000RPM/min.
2. All moving parts need to pass the high precision test of dynamic balancing to ensure the residual value is lower than G0.4 degrees.
3. Good design of labyrinth sealing ring to effectively prevent the cutting oil and foreign invasion.
4. The main spindle adopts oil cooling, which effectively maintain the temperature stability of spindle.
5. Water outgoing device in optional center.