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Title:
BEARING UNIT FOR DENTAL AIR TURBIBE, AND DENTAL AIR TURBINE
Document Type and Number:
WIPO Patent Application WO/2015/046181
Kind Code:
A1
Abstract:
A dental air turbine (10) is provided with: turbine blades (12); a rotating shaft (11) to which the turbine blades (12) are affixed integrally; and a pair of rolling bearings (13, 14) for rotatably supporting the rotating shaft (11) relative to a housing (15). The pair of rolling bearings (13, 14) are arranged back-to-back with the inner rings (23, 24) fitted to the rotary shaft (11) so that a preload is applied. As a result of this configuration, the rolling bearings (13, 14) can be reduced in size, and the rigidity of the rotating shaft (11) against moment can be increased.

Inventors:
SUZUKI Hironori (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2014/075147
Publication Date:
April 02, 2015
Filing Date:
September 22, 2014
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 〒1418560, JP)
International Classes:
F16C25/08; A61C1/05; F16C19/06; F16C35/067; F16C35/077
Foreign References:
JP2002372051A2002-12-26
JP2005501599A2005-01-20
JP2002235738A2002-08-23
JPH1137162A1999-02-09
JPH0866411A1996-03-12
Attorney, Agent or Firm:
HAMADA Yuriko et al. (Eikoh Patent Firm, Toranomon East Bldg. 10F 7-13, Nishi-Shimbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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