Title:
DOUBLE-ROW ROLLER BEARING
Document Type and Number:
Japanese Patent JP2020008108
Kind Code:
A
Abstract:
To provide a double-row roller bearing for stabilizing behaviors of rollers at high-speed rotation, and suppressed in the heat generation of the bearing and a friction loss, in the double-row roller bearing having a comb-shaped cage.SOLUTION: A double-row roller bearing comprises: an outer ring 1 having a raceway surface 1a at an inside diameter face; an inner ring 2 having a raceway surface 2a at an outside diameter face; a plurality of rollers 3 arranged in two rows between the outer ring 1 and the inner ring 2; and a cage 4 for holding the rollers 3 in the rows which are arranged in an annular shape. The cage 4 is composed of an annular part 4a arranged between the two roller rows, and a plurality of column parts 4b extending from a side face of the annular part 4a, and rollingly holding the rollers 3 in the rows. A minimum distance between end faces of the rollers in the rows and a side face of the annular part of the cage is shorter than 0.003×D+0.12 mm when setting maximum diameters of the rollers as D.SELECTED DRAWING: Figure 1
Inventors:
AGATA SEIZO
OZU TAKUYA
OZU TAKUYA
Application Number:
JP2018130639A
Publication Date:
January 16, 2020
Filing Date:
July 10, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C19/28; F16C33/49; F16C23/08
Domestic Patent References:
| JPS60201113A | 1985-10-11 | |||
| JP2017078480A | 2017-04-27 | |||
| JP2008075758A | 2008-04-03 |
Foreign References:
| WO2010034282A1 | 2010-04-01 |
Attorney, Agent or Firm:
Torii Kazuhisa
Torii Hiroshi
Torii Hiroshi