Title:
NEEDLE ROLLER WITH RETAINER AND PLANETARY GEAR MECHANISM SUPPORTING MECHANISM PROVIDED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2018/164008
Kind Code:
A1
Abstract:
According to the present invention, a retainer (2) is an outer ring guide-type retainer in which an outer diameter guide surface (20) comes into contact with an outer ring raceway surface. The needle roller (1) is a crowning needle roller having a cylindrical surface portion (10) of a constant diameter in a central region thereof, and inclined surface portions (11) on both sides of the cylindrical surface portion (10). The outer diameter guide surface (20) of the retainer (2), and boundary portions (12) between the cylindrical surface portion (10) and the inclined surface portions (11) of the needle roller (1) are disposed at different positions in the axial direction. The boundary portions (12) between the cylindrical surface portion (10) and the inclined surface portions (11) of the needle roller (1) are not in contact with the retainer (2).
Inventors:
FUKAMI RINO (JP)
TARUMI TETSUYA (JP)
TSUCHIYA MASARU (JP)
TARUMI TETSUYA (JP)
TSUCHIYA MASARU (JP)
Application Number:
PCT/JP2018/008123
Publication Date:
September 13, 2018
Filing Date:
March 02, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/46; F16C33/34; F16C33/46; F16H1/28
Domestic Patent References:
| WO2014054376A1 | 2014-04-10 | |||
| WO2013191238A1 | 2013-12-27 |
Foreign References:
| JP2006052790A | 2006-02-23 | |||
| JP2009197904A | 2009-09-03 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
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