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Title:
A manufacturing method and information storage playback equipment of a bearing device and a bearing device
Document Type and Number:
Japanese Patent JP6209374
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a bearing device which can be manufactured inexpensively by easy work and can suppress scattering of grease and emission of outgas, a method for manufacturing the bearing device, and an information recording regenerative apparatus including the bearing device.SOLUTION: A bearing device includes inner ring rolling surfaces 39, 49 in which the outer radiuses in inner ends 36b, 46b are formed to be smaller than a first separation distance K1 and to be gradually larger, and outer ring rolling surfaces 34, 44 in which the inner radiuses in outer ends 31a, 41a are formed to be larger than a second separation distance K2 and to be gradually smaller. Outer ends of rolling bearing parts 30, 40 in the axial direction are provided with a seal member 25. A tip portion 27 is provided to overlap with a first outer ring 31 and a second outer ring 41.

Inventors:
Akihiro Iino
Takayuki Kosaka
Application Number:
JP2013141737A
Publication Date:
October 04, 2017
Filing Date:
July 05, 2013
Export Citation:
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Assignee:
Seiko Instruments Inc.
International Classes:
F16C19/16; F16C19/18; F16C25/08; F16C33/41; F16C33/58; F16C33/78; F16C35/073; F16C35/077; F16C43/04; G11B21/02; H02K5/173
Domestic Patent References:
JP2012189181A
JP200365330A
JP62178288U
JP2009156456A
JP200889122A
JP2012189182A
JP201164263A
JP20069895A
JP201272883A
JP2006329286A
JP201031902A
JP61835U
JP2006283782A
Foreign References:
WO2009139276A1
WO2012104300A1
WO2013018865A1
Attorney, Agent or Firm:
Noriaki Uchino
Nobuyuki Kimura



 
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