Title:
ROLLING BEARING FOR EXTREMELY LOW-TEMPERATURE ENVIRONMENT
Document Type and Number:
WIPO Patent Application WO/2017/082249
Kind Code:
A1
Abstract:
Provided is a rolling bearing for an extremely low-temperature environment having an elastic expanding/contracting mechanism in which: spherical-surface recessed sections (4) that have the broadest possible surface in contact with adjacent balls (3) are provided to both side surfaces in a plurality of separator-type cage pieces (A) in which ring-shaped fluororesin elements are divided in the circumferential direction in the gaps between the balls (3); also provided are notched grooves (5) shaped as V grooves passing through to both axial end surfaces, and identically shaped notched grooves (6) passing through to both the inner and outer radial circumferential surfaces; and elastic reduction in the groove widths thereof is facilitated. Compression adjustment of the width of both side surfaces allows damage due to deformation of the cage pieces (A) with excessive force to be prevented, and the cage pieces (A) to be smoothly inserted into the spaces between the rolling bodies.
More Like This:
| JP2006153185 | BALL RETAINER AND DIRECT-ACTING ROLLING GUIDE UNIT |
| JP4282924 | Linear motion device |
Inventors:
TANAKA NOBUHIRO (JP)
Application Number:
PCT/JP2016/083103
Publication Date:
May 18, 2017
Filing Date:
November 08, 2016
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C33/374; F04D7/02; F04D29/046; F04D29/049; F04D29/06; F16C19/06; F16C33/66
Foreign References:
| JP2014020490A | 2014-02-03 | |||
| JPS4713532U | 1972-10-17 | |||
| US3208806A | 1965-09-28 | |||
| JP2002147462A | 2002-05-22 | |||
| JPS63152023U | 1988-10-05 | |||
| CN2713210Y | 2005-07-27 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
Download PDF: