CN201083238Y

CN201083238Y - Sealing structure for high speed ball bearing

Info

Publication number: CN201083238Y
Application number: CNU2007200736523U
Authority: CN
Inventors: 郭长建
Original assignee: Sibote Bearing Technology R & D Co Ltd Shanghai; C&U Group Ltd
Current assignee: Sibote Bearing Technology R & D Co Ltd Shanghai; C&U Group Ltd
Priority date: 2007-08-15
Filing date: 2007-08-15
Publication date: 2008-07-09
Anticipated expiration: 2017-08-15

Abstract

The utility model discloses a sealing structure for high-speed ball bearing, which is characterized in that: the sealing structure comprises an inner labyrinth-shaped ring arranged on the circumference of a bearing inner ring, wherein the inner ring of an O-shape rubber ring is in contact with the circumference of the inner labyrinth-shaped ring, the outer ring of the O-shaped rubber ring is in contact with the sealing groove of a bearing external cavity, the inner end face of the inner labyrinth-shaped ring is in contact with the inner end face of the bearing outer ring sealing groove, the outer end face of the inner labyrinth-shaped ring is connected with one side of a retainer piece, the other side of the retainer piece is in contact with the inner side of an outer labyrinth-shaped ring, and the outer side of the outer arc-shaped ring is in contact with a spring ring. The utility model adopts a little-clearance complex labyrinth structure consisting of the inner labyrinth-shaped ring, the retainer piece and the outer labyrinth-shaped ring; the length of the labyrinth is extended in the axial direction of the bearing, and radial floating regulation is realized in the radial direction, thereby not only effectively solving the problem of leakage of grease inside the bearing, but also more efficiently preventing external dust and foreign matter from entering the bearing and achieving the ideal sealing effect required by the high-speed bearing. Thus, the utility model has the advantages of good sealing performance and long service life.

Description

A kind of sealing configuration of high-speed ball bearing

Technical field

The utility model relates to a kind of sealing configuration of high-speed ball bearing.

Background technique

High-speed ball bearing is widely used in fields such as textile manufacturing machine, machine tool, speed-adjustable motor, Aero-Space, and the non-maintaining ball bearing that inside is marked with the sealing configuration of lubricating grease occupies very big ratio, and effective sealing problem of high-speed ball bearing is a difficult problem.The sealing configuration of general bearing has a variety of, say contact-type and contactless from contact condition, but the reason sealing configuration owing to high speed rotating for high-speed ball bearing often adopts non-contacting sealing configuration, but it is poor usually to occur sealing effect behind the employing non-contact seal structure, grease leakage or dust appear when bearing runs up, impurity enters problems such as bearing inside, usually since the sealing the bad bearing premature failure that causes of effect.High-speed ball bearing is because bearing rotating speed height, the bearing internal grease is sheared, mixing power is big, grease is mobile big, and sealing problem is just very outstanding, if adopt contact-type interference sealing configuration, the friction of situation lower seal lip strengthens running up, cause easily the rubbing too early wearing and tearing of heat release and seal lip still do not have sealing effect, cause on the contrary burning to death in early days, the present invention is directed to the characteristics of the high speed use of bearing for this reason, design and develop the sealing configuration under a kind of suitable high-speed condition.

Summary of the invention

The purpose of this utility model is to provide a kind of sealing configuration of high-speed ball bearing, and the grease that can solve the original high-speed ball bearing sealing configuration of using always leaks and the too high problem of temperature rise.

To achieve these goals, the technical solution of the utility model is as follows: a kind of sealing configuration of high-speed ball bearing, the sealing structure is between the seal groove and bearing inner race of bearing outer ring, it is characterized in that the sealing structure comprises the inner court type circle that is located at the bearing inner race outer circumferential face, the inner ring of O type rubber ring contacts with the periphery of inner court type circle, the outer ring of O type rubber ring contacts with the seal groove of bearing exocoel, the interior edge face of inner court type circle contacts with the interior edge face of bearing outer ring seal groove, the exterior edge face of inner court type circle is connected with a side of catch, the interior side contacts of the opposite side of catch and outer palace type circle, the outside of outer palace type circle contacts with spring ring.

Inner court type circle is adopted in high-speed ball bearing sealing of the present utility model, catch and outer palace type circle constitute the compound labyrinth structure in little gap, at the axially-extending of bearing the length in labyrinth, radially realizing the radial floating adjusting, not only solved bearing internal grease leakage problem effectively, also the outside dust of effectively preventing, impurity enter the bearing internal problem more, have realized the sealing effect that high-speed bearing is desirable, therefore have good airproof performance, the advantage of long service life.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the structural representation of spring ring

Fig. 3 is the structural representation of outer palace type circle

Fig. 4 is the structural representation of catch

Fig. 5 is the structural representation of O type rubber ring

Fig. 6 is the structural representation of inner court type circle

Embodiment

Below in conjunction with drawings and Examples the utility model is elaborated, high-speed ball bearing sealing configuration of the present utility model is located between bearing outer ring and the bearing inner race, bearing outer ring has the seal groove of fixed seal ring, inner ring is the cylindrical light face that precision machining is crossed, sealing configuration has five parts cooperations and is installed in the seal groove of outer ring, inner court type circle 5 is fixed by O type rubber ring 4 resilient radial, catch 3, outer palace type circle 2 is radially for floating, spring ring 1 is the radial and axial effect of fixing and compressing for spring ring plays, outer palace type circle 2, catch 3, O type rubber ring 4 is combined into and the closely spaced compound labyrinth seal structure of inner ring external diameter.

Claims

1. the sealing configuration of a high-speed ball bearing, the sealing structure is between the seal groove and bearing inner race of bearing outer ring, it is characterized in that the sealing structure comprises the inner court type circle that is located at the bearing inner race outer circumferential face, the inner ring of O type rubber ring contacts with the periphery of inner court type circle, the outer ring of O type rubber ring contacts with the seal groove of bearing exocoel, the interior edge face of inner court type circle contacts with the interior edge face of bearing outer ring seal groove, the exterior edge face of inner court type circle is connected with a side of catch, the interior side contacts of the opposite side of catch and outer palace type circle, the outside of outer palace type circle contacts with spring ring.