Title:
CROWN-TYPE RESIN RETAINER FOR DEEP GROOVE BALL BEARING
Document Type and Number:
Japanese Patent JP2023007629
Kind Code:
A
Abstract:
To provide a crown-type resin retainer for a deep groove ball bearing made from a high-rigidity material, which prevents the occurrence of abnormal noise due to whirling, and suppresses whitening and breakage of the retainer when the retainer is incorporated into the deep groove ball bearing.SOLUTION: A resin material of a retainer 1 has a flexural modulus of 8,000 MPa or more. A ratio A/D of a pocket opening diameter A to a ball diameter D is 0.89≤A/D<0.93, and an axial height Ht of an elastic piece 3 to one axial side 2A of a base 2 and an axial height Hp of the elastic piece 3 to the center of a pocket P have a relationship of Hp×0.6≤Ht≤Hp. On the inner diameter side of the elastic piece 3, there is a notch F, which is located closer to an outer diameter direction K than an extended inner surface 2C of the base 2. The notch F is rectangular in circumferential view. A radial length W1 of the notch F is W×0.1≤W1≤W×0.5 with the radial length of the base 2 as W, and an axial length H1 of the notch F is Ht×0.6≤H1≤Hp.SELECTED DRAWING: Figure 2B
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Inventors:
UECHI MICHIYUKI
NARASAKI YASUHIRO
FUKADA SHOGO
NARASAKI YASUHIRO
FUKADA SHOGO
Application Number:
JP2021110602A
Publication Date:
January 19, 2023
Filing Date:
July 02, 2021
Export Citation:
Assignee:
NAKANISHI METAL WORKS CO
International Classes:
F16C33/41; F16C19/06; F16C43/08
Attorney, Agent or Firm:
Yoshihide Yanagino
Takao Yanagino
Norio Morioka
Sekiguchi Hisayu
Masato Nakagawa
Takao Yanagino
Norio Morioka
Sekiguchi Hisayu
Masato Nakagawa