Title:
ROLLING BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/095825
Kind Code:
A1
Abstract:
Provided is a rolling bearing device with which it is possible to ensure lubrication durability in grease lubrication even under high-speed rolling conditions and to suppress any increase in temperature during a warm-up operation. This rolling bearing device 20 comprises: angular ball bearings 1 having an inner race 2, an outer race 3, a plurality of balls 4 that are interposed between the inner race 2 and the outer race 3, and a grease composition 7 that is sealed into a bearing space between the inner race 2 and the outer race 3, the grease composition 7 including a base oil that has a dynamic viscosity at 40°C of less than 120 mm2/s and a thickener that comprises a urea compound, and the grease composition 7 having a mixture consistency of 230-300 as measured in conformance with JIS K 2220; and a lubrication oil feeding mechanism 11 for feeding a lubrication oil into the bearing space in the angular ball bearings 1 and supplying the lubrication oil to orbital surfaces.
Inventors:
SONODA KAZUKI (JP)
KUZUYA HIROTO (JP)
KUZUYA HIROTO (JP)
Application Number:
PCT/JP2023/038311
Publication Date:
May 10, 2024
Filing Date:
October 24, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/66; C10M107/02; C10M115/08; C10M129/68; C10M169/02; F16C19/16; F16N7/36; C10N20/02; C10N30/00; C10N40/02
Foreign References:
| JP2006029473A | 2006-02-02 | |||
| JP2003083341A | 2003-03-19 | |||
| JP2000169872A | 2000-06-20 | |||
| JP2020159547A | 2020-10-01 | |||
| JPH0688085A | 1994-03-29 | |||
| JP2004083798A | 2004-03-18 | |||
| JP2003193080A | 2003-07-09 | |||
| JP5916781B2 | 2016-05-11 |
Attorney, Agent or Firm:
WAKI Hikaru et al. (JP)
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