Title:
BEARING AND SPEED REDUCER
Document Type and Number:
Japanese Patent JP2019173901
Kind Code:
A
Abstract:
To provide a structure of a bearing which can be manufactured easily, while suppressing deviation or slip of a fixing lubricant.SOLUTION: A bearing includes: a cylindrical inner ring 10; a plurality of rollers 13 arranged along an outer peripheral surface of the inner ring; and a first cage 11 arranged radially outside of the inner ring, and for holding the rollers at an outer peripheral part of the inner ring. The first cage includes: a plurality of first column parts 110 extending in the axial direction; a first ring 111 for connecting end parts of an upper part in the axial direction of the plurality of first column parts; and at least one protrusion part 113 protruding radially inside from the first ring. The inner ring and the first cage rotate relatively with each other. The plurality of rollers are arranged between the adjacent first column parts respectively. Part of the rollers are located further radially outside than the first column parts. Between the first ring and the inner ring, and between the first colum part and the inner ring, a second cage 12 is arranged. The second cage is made of a fixing lubricant, is formed by a single member, and at least part of it is located on the lower side of the protrusion part 113.SELECTED DRAWING: Figure 4
Inventors:
TSUBONE TAHEI
Application Number:
JP2018063756A
Publication Date:
October 10, 2019
Filing Date:
March 29, 2018
Export Citation:
Assignee:
NIDEC SHIMPO CORP
International Classes:
F16C33/66; F16C19/26; F16C33/46; F16H1/32
Attorney, Agent or Firm:
Takami Nishida