Title:
BEARING DEVICE AND SPINDLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/163254
Kind Code:
A1
Abstract:
Provided are: a bearing device that can continuously discharge a supplied lubricant, enable a continuous operation stably for a long time while maintaining a good lubrication state, achieve a long life of a bearing, and is easy to maintain; and a spindle device. A bearing device (10) supplies a lubricant G into a rolling bearing (20) from the outside via a lubricant supply path (52). Each of inner ring spacers (30A, 30B) has a flange portion (31) formed to protrude radially outward. A root portion (31a) of the flange portion (31) is axially separated from an end surface (33) of the inner ring spacer (30A, 30B) in contact with an inner ring (21), and a side surface (32) of the flange portion (31) on the rolling bearing side has a disc-shaped flat surface extending radially outward from the root portion (31a) of the flange portion (31).
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Inventors:
OGURI SHOICHIRO (JP)
IWASAKI OSAMU (JP)
IWASAKI OSAMU (JP)
Application Number:
PCT/JP2021/048062
Publication Date:
August 04, 2022
Filing Date:
December 23, 2021
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
B23B19/02; B23Q11/12; F16C19/16; F16C33/38; F16C33/58; F16C33/66; F16C35/12; F16N31/00
Foreign References:
| JP2004332928A | 2004-11-25 | |||
| JP2015113956A | 2015-06-22 | |||
| JP2006046454A | 2006-02-16 | |||
| US8235176B2 | 2012-08-07 | |||
| JP2004332928A | 2004-11-25 | |||
| JP2021014410A | 2021-02-12 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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