Patent ID: 9051971
Filing Date: 2015-06-09
Classification: B23Q,C10M,C10N,F16C

Abstract:
1. An oil-mist-free and high-speed electric spindle, comprising a shell, a stator and a rotor, wherein said stator and said rotor are received by a shelter which is formed by an inner surface of said shell, wherein by using a bearing provided on a bearing providing position of said shell, said stator and said rotor are separated by a gap and freely rotatably supported on said shell, wherein a labyrinth sealing structure, which covers said bearing providing position, is provided on an outside of said bearing providing position, wherein said labyrinth sealing structure has a channel which opens to an atmosphere, wherein a through-hole is provided on said shell, one end of said through-hole opens to said shelter, and the other end of said through-hole is connected with said channel of said labyrinth sealing structure, wherein, said bearing providing position is filled with a lubricating grease which is a total synthesis grease of polyurea that is mainly composed of a base oil and contains a nanometer anti-wear additive.