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Title:
SPINDLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/160054
Kind Code:
A1
Abstract:
Provided is a spindle device with which it is possible to increase the vibration damping effect and rotate a rotary spindle in a stable manner. The distance from the rear end surface of a thrust bearing to the center of gravity of the rotary spindle is greater than the diameter of the center of the surface area of the thrust bearing, and at least one O-ring is positioned between the center of the radial bearing and the center of gravity of the rotary spindle, in the axial direction of the rotary spindle.

Inventors:
KOBAYASHI Naoya (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
TAKAHASHI Atsushi (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
KATSUNO Yoshiaki (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2019/005404
Publication Date:
August 22, 2019
Filing Date:
February 14, 2019
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 〒1418560, JP)
International Classes:
F16C32/00; F16C27/06; F16F15/04
Domestic Patent References:
WO2017009072A12017-01-19
WO2009104542A12009-08-27
Foreign References:
JP2018021625A2018-02-08
JP2016223553A2016-12-28
JP2006077797A2006-03-23
JP2003278751A2003-10-02
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (Toranomon East Bldg. 10F, 7-13 Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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