A hollow shaft for it is high -speed rotatory

The utility model provides a hollow shaft for it is high -speed rotatory, including preceding spindle nose, hollow shaft axis body, back spindle nose, the hollow shaft axis body comprises a main yoke and an assistance yoke connection, and the cavity diameter of a cavity diameter ratio assistance yoke of a main yoke is big, preceding spindle nose, back spindle nose are connected respectively to hollow shaft axis body both ends. The utility model discloses the creative support yoke that will install the accessory is used as the pivot, the characteristic of make full use of material, and the hollow shaft is under the sufficient circumstances of proof strength, and weight reduction reduces high -speed centrifugal force when rotatory, overcomes a difficult problem that adopts whole solid shafting can't install accessories in its relevant position, overcome axial length and a big manufacture craft difficult problem. 本实用新型提供了种用于高速旋转的空心轴，包括前轴头、空心轴轴体、后轴头，所述空心轴轴体由主发磁轭及辅发磁轭连接构成，主发磁轭的空腔直径比辅发磁轭的空腔直径大，所述空心轴轴体两端分别连接前轴头、后轴头。