Title:
REVOLVING SEAT BEARING
Document Type and Number:
Japanese Patent JP2018159393
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a revolving seat bearing which can prevent that rollers fall from a clearance between a pair of raceway rings in a state that a gear ring is not assembled.SOLUTION: A revolving seat bearing 10 comprises: a pair of raceway rings 11, 12 having raceway surfaces 21A1, 31A1 which are formed into annular shapes, and oppose each other in an axial direction; a plurality of rollers 13 which are rollingly arranged between the raceway surfaces 21A1, 31A1 of a pair of the raceway rings 11, 12; a gear ring 16 connected to one raceway ring 12 in a state of being arranged outside the rollers 13 in a radial direction; and a cage 17 for holding intervals between the rollers 13 in a peripheral direction. The cage 17 is constituted of a plurality of divided bodies 34 which are divided into the peripheral direction, and a step part 41 protruding to the axial direction rather than the raceway surface 31A1 at the outside of the rollers 13 in the radial direction is formed at least at one raceway ring 12.SELECTED DRAWING: Figure 3
Inventors:
OIWA NAOKI
Application Number:
JP2017055565A
Publication Date:
October 11, 2018
Filing Date:
March 22, 2017
Export Citation:
Assignee:
JTEKT CORP
International Classes:
F16C33/60; F16C19/38; F16C33/64; F16C43/06
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office