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Title:
ROLLING BEARING UNIT
Document Type and Number:
WIPO Patent Application WO/2017/179617
Kind Code:
A1
Abstract:
A rolling bearing unit is provided with: an outer ring (1) fixed within a housing (11); an inner ring (2) facing the outer ring (1); an annular seal member (40) covering a side opening (D) of a bearing space between the outer ring (1) and the inner ring (2); an oil path (12) that is for lubricating oil and that is arranged along the axial direction between the inner diameter surface of the housing (11) and the outer diameter surface of the outer ring (1); a spacer (6) arranged adjacent to an axial other end side of the outer ring (1); a connecting piece (80) that enters the oil path (12) and that fixes the seal member (40) to the outer ring (1); an inner diameter-side protrusion (83) that is provided to the connecting piece (80) and that enters a retaining recess (50) formed between the outer ring (1) and the spacer (6); and a first outer diameter-side protrusion (84) that is provided to the connecting piece (80) and that is in contact with the inner wall of the oil path (12). The first outer diameter-side protrusion (84) is positioned further toward the axial other end side than an axial other end-side end surface (6a) of the retaining recess (50) with which the inner diameter-side protrusion (83) is in contact.

Inventors:
YAMAMOTO NAOTA (JP)
TOHO SHOTA (JP)
UCHIMURA HIROSHI (JP)
Application Number:
PCT/JP2017/014969
Publication Date:
October 19, 2017
Filing Date:
April 12, 2017
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/78; F16C19/38; F16C33/66; F16J15/447
Foreign References:
JPH03140620A1991-06-14
JP2004286081A2004-10-14
JPH0893777A1996-04-09
JPH04357326A1992-12-10
JP2014231856A2014-12-11
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
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