Title:
DEEP GROOVE BALL BEARING
Document Type and Number:
WIPO Patent Application WO/2015/046213
Kind Code:
A1
Abstract:
Provided is a deep groove ball bearing in which the excessive outflow of lubricating oil from the bearing is prevented, preventing a reduction in the life due to the shortage of the lubricating oil within the bearing.
Balls (30) are assembled between the track groove (11) of an outer ring (10) and the track groove (21) of an inner ring (20), and the balls (30) are held by a first split retainer (41) and by a second split retainer (42) fitted to the inside of the first split retainer (41). During the rotation of both the first split retainer (41) and the second split retainer (42), a pumping action is created by the difference in circumferential speed between the split retainers (41, 42) caused by the difference in diameter between the split retainers (41, 42). The pumping action sucks lubricating oil into the bearing and causes the lubricating oil to flow out from the other side axially of the first split retainer (41). A flange (60) is provided to the other side axially of the first split retainer (41), and the flange (60) prevents the excessive outflow of the lubricating oil.
Inventors:
WAKUDA TAKAHIRO (JP)
Application Number:
PCT/JP2014/075215
Publication Date:
April 02, 2015
Filing Date:
September 24, 2014
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/06; F16C33/38; F16C33/44
Foreign References:
| JP2013096434A | 2013-05-20 | |||
| JP2013092241A | 2013-05-16 | |||
| JP2011021661A | 2011-02-03 |
Other References:
See also references of EP 3051160A4
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
Naoya Kamata (JP)
Naoya Kamata (JP)
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