公开(公告)号：US20180345304A1

公开(公告)日：2018-12-06

申请号：US15778328

申请日：2016-11-25

申请人： NSK LTD.

发明人： Naoya KOBAYASHI ,  Atsushi TAKAHASHI

IPC分类号： B05B5/04 ,  F01D15/06 ,  F16C32/06 ,  F16C39/06 ,  F01D25/16 ,  F16C32/04

CPC分类号： F16C32/0618 ,  B05B5/0415 ,  F01D15/06 ,  F01D25/16 ,  F16C32/0402 ,  F16C39/06 ,  F16C2223/42

摘要： A spindle device (10) includes a rotating shaft (12) having a plurality of turbine blades (11) provided in a circumferential direction, a housing configured to accommodate therein the rotating shaft (12), and a gas bearing (40) mounted to the housing (20) and configured to float and support the rotating shaft (12) to the housing (20) in a contactless manner by supply of a gas. The rotating shaft (12) is configured to be rotatively driven by jetting gas to the plurality of turbine blades (11). The plurality of turbine blades (11) overlaps the gas bearing (40) in an axial direction. Therefore, there is provided the spindle device having a flat configuration in which an axial length is short and capable of implementing miniaturization and weight saving.