A taper roller bearing includes: an inner ring, an outer ring, a plurality of taper rollers, and an annular cage. The cage includes a small-diameter annular portion on one side in a axial direction, a large-diameter annular portion which is positioned on the other side in the axial direction and on a radial outer side of a large flange of the inner ring, and a plurality of column portions which link the small-diameter annular portion and the large-diameter annular portion. The taper roller bearing has a labyrinth structure which suppresses a flow of lubricating oil to the outside of the bearing from the inside of the bearing between the large flange and the large-diameter annular portion.

Claims

6 · 1 independent · depth 2

6 granted claims

›1.independentA taper roller bearing comprising: an inner ring that includes a small flange that is positioned on a first side in an axial direction and that protru…+5

›2.↳ 1The taper roller bearing according to claim 1 , wherein: an inner circumferential surface of the large-diameter annular portion includes a first inner…d2

›3.↳ 1The taper roller bearing according to claim 1 , wherein the small-diameter annular portion blocks an annular opening portion formed between the small …d2

›4.↳ 1The taper roller bearing according to claim 1 , wherein: spaces formed between the large-diameter annular portion and the small-diameter annular porti…d2

›5.↳ 1The taper roller bearing according to claim 1 , wherein on a radial outer side of the column portions, a recess portion is provided, the recess portio…d2

›6.↳ 1The taper roller bearing according to claim 1 , wherein in a radial inner surface of the column portions, a groove is disposed such that the groove ex…d2

Classifications

4 codes

IPC · International Patent Classification

Section F — Mechanical engineering; lighting; heating; weapons

F16C33/46
F16C33/66
F16C19/36
F16C33/80

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Pendency

3.2 y

1,166 days filing → grant

Office actions

non-final + final

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no RCE

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Examiner

Thomas R Hannon

art unit 3656 · TC 3600

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1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20170307015 A1	26 Oct 2017

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