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Synthetic resin retainer and ball bearing using the same

A synthetic resin and retainer technology, which is applied to bearing components, shafts and bearings, mechanical equipment, etc., can solve the problems of bearing temperature rise, bearing life reduction, and grease deterioration, etc., to prevent the reduction of bearing life and prevent abnormalities Sound, anti-wear effect

Active Publication Date: 2007-05-16
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the annular body interferes with other components such as the outer ring, inner ring, or bearing pads, and the friction generated by contact generates heat, which increases the temperature of the bearing and easily deteriorates the grease.
In addition, wear powder is generated in the contact part, and the wear powder enters the contact part between the ball and the rotating surface of the inner and outer rings, which reduces the life of the bearing and may also produce abnormal noise

Method used

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  • Synthetic resin retainer and ball bearing using the same
  • Synthetic resin retainer and ball bearing using the same
  • Synthetic resin retainer and ball bearing using the same

Examples

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Embodiment Construction

[0055] Embodiments of the present invention will be described below based on the drawings. 1 to 6 show a first embodiment of the present invention. The ball bearing has: outer ring A 1 , inner wheel A 2 , on outer wheel A 2 and inner wheel A 2 A plurality of balls B assembled between them, and a cage C that holds the balls B. As shown in FIGS. 3 to 5 , the cage C is composed of two ring-shaped bodies 1 , 1 , and each ring-shaped body 1 is formed into the same shape by molding a synthetic resin. In addition, on outer wheel A 1 and inner wheel A 2 As shown in Figure 1, the annular space formed between them is sealed with a bearing gasket D and filled with grease.

[0056] As shown in FIGS. 2 to 4 , the annular body 1 has a plurality of hemispherical ball holding portions 2 and a plurality of plate-shaped coupling portions 3, and the above-mentioned ball holding portions 2 and coupling portions 3 are formed alternately in the circumferential direction, and each The ball h...

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Abstract

The invention provides a synthetic resin retainer and a ball bearing using the synthetic resin retainer. The synthetic resin retainer is formed by connecting two sheets of annular bodies by the engagement of engagement claws with engagement holes to prevent it from being worn at the engagement parts of the engagement claws for integrally connecting two annular bodies to each other. A plurality of semi-spherical pockets (4) are formed in the abutting faces of two annular bodies (1) and (1) circumferentially at equal intervals, and the engagement claws (6) and the engagement holes (5) are formed at the engagement parts (3) between the adjacent pockets (4). The engagement claws (6) are so engaged with the engagement holes (5) that a clearance in the radial direction of the retainer can be formed between the engagement claws (6) and the engagement holes (5) at the beginning of the insertion of the engagement claws (6) and can be set to 0 or less in the engaged state of the engagement claws (6) with the engagement holes (5). Thus, the engagement parts of the engagement claws (6) can be prevented from being slid in the radial direction of the retainer.

Description

technical field [0001] The present invention mainly relates to a synthetic resin cage incorporated in a ball bearing for high-speed rotation and a ball bearing using the synthetic resin cage. Background technique [0002] Patent Document 1 describes a cage made of synthetic resin that is conventionally known as a ball bearing for high-speed rotation. [0003] In the synthetic resin cage described in the aforementioned Patent Document 1, a plurality of hemispherical recesses along the outer circumference of the ball are provided at equal intervals in the circumferential direction on one side surface of the two ring-shaped bodies made of synthetic resin moldings. , an engaging hole is provided at the junction between adjacent recesses, an engaging claw is provided on one side of the engaging hole in the circumferential direction of the retainer, and the above engaging claw is inserted into the engaging hole of the annular body on the other side , so that the two rings are com...

Claims

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Application Information

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IPC IPC(8): F16C33/44F16C43/06
Inventor 内藤健一郎
Owner NTN CORP
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