Title:
DEEP GROOVE BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2023/238774
Kind Code:
A1
Abstract:
This deep groove ball bearing (1) comprises: an inner race (2), which is an inner member; an outer race (3), which is an outer member; a plurality of balls (4) interposed between these inner and outer races (2, 3); and a waveform retainer 5 that retains these balls (4). A band width (h), which is the radial-direction dimension of the waveform retainer (5), is set to 30-44% of a diameter (BD) of the balls (4). Limiting the upper limit value of the band width (h) to 44% or lower of the ball diameter has the effect of allowing grease to flow easily and the effect of decreasing the stirring force of the grease, thereby inhibiting a temperature increase of the deep groove ball bearing (1) during a rapid acceleration rotation. Since the lower limit value of the band width (h) is set to at least 30% of the ball diameter, the movement of the balls (4) stabilizes, and it is possible to satisfy the required retainer strength.
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Inventors:
WU WENWEI (JP)
MATSUMOTO AKIO (JP)
MATSUMOTO AKIO (JP)
Application Number:
PCT/JP2023/020516
Publication Date:
December 14, 2023
Filing Date:
June 01, 2023
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/42; F16C19/06
Foreign References:
| JP2000120699A | 2000-04-25 | |||
| JP2013142444A | 2013-07-22 | |||
| JP2012047269A | 2012-03-08 | |||
| JP2020159549A | 2020-10-01 | |||
| JP2019060394A | 2019-04-18 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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