Title:
SEALED ROLLING BEARING
Document Type and Number:
Japanese Patent JP2018159464
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sealed deep groove ball bearing capable of holding grease pushed against an inner diameter surface of an outer ring and reducing load in an extraction direction on a seal member, to prevent extraction of the seal member, without increasing an outer ring diameter facing a rolling body.SOLUTION: A grease pocket 14 is provided at a position separate in an axis direction so as not to continue from a raceway groove 4 of an inner diameter surface 2a of an outer ring 2, such that the raceway groove 4 with a sufficient depth can be provided without making a diameter of the inner diameter surface of the outer ring 2 small with respect to a ball 6. Even when grease sealed inside a bearing is pushed against the inner diameter surface 2a of the outer ring 2 due to centrifugal force at high-speed rotation, the grease pushed against the inner diameter surface 2a of the outer ring 2 is held in the grease pocket 14, thereby reducing load in an extraction direction applied to a seal member 10.SELECTED DRAWING: Figure 1
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Inventors:
WAKUTA TAKAHIRO
Application Number:
JP2017058421A
Publication Date:
October 11, 2018
Filing Date:
March 24, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C33/58; F16C19/06; F16C33/64; F16C33/66
Attorney, Agent or Firm:
Torii Kazuhisa
Torii Hiroshi
Torii Hiroshi