CN2223378Y

CN2223378Y - High-sealing deep-groove ball bearing

Info

Publication number: CN2223378Y
Application number: CN 95217568
Authority: CN
Inventors: 陈杰; 庞军; 马新超; 张广桐; 施兴培
Original assignee: XIANGHUA HIGH SEALING BEARING FACTORY HARBIN
Current assignee: XIANGHUA HIGH SEALING BEARING FACTORY HARBIN
Priority date: 1995-07-21
Filing date: 1995-07-21
Publication date: 1996-03-27
Anticipated expiration: 2005-07-21

Abstract

The utility model relates to a high-sealing deep-groove ball bearing belonging to a light series, medium series and non-standard deep-groove ball bearing. The utility model is composed of an outer ring, an inner ring, balls, a retainer and a sealing ring, wherein, the balls, the retainer and the sealing ring are arranged between the outer ring and the inner ring; both end positions of the inner and the outer diameters of the inner ring of the bearing are provided with U-shaped seal grooves; two seal lips are arranged on the inner end of sealing ring; the sealing ring is arranged in the U-shaped seal groove, one lip of the sealing ring is abutted on the upper end surface of the U-shaped seal groove, and the other lip is abutted on the lower end surface of the U-shaped seal groove in the way of elastic interference to form a sealing structure with a high axial direction. The utility model can prevent the internal greases from overflowing and foreign impurities from penetrating, and the work is reliable; the utility model can be used in various mechanisms which have special requirements to the seal performance of bearings.

Description

The high sealing deep groove ball bearing

A kind of high sealing deep groove ball bearing belongs to light, middle series and non-standard deep groove ball bearing.

Its sealing configuration of existing seal deep groove ball bearing is radial seal structure, the bearing of this sealing configuration, and friction torque is big during operation, and the work temperature rise of generation has influenced the rotating speed and the life-span of bearing.Simultaneously, can only prevent usually that a large amount of leakages of bearing internal grease and outside foreign material from immersing, do not guarantee the excessive of the infiltration of working mediums such as oils that the bearing external penetration is extremely strong such as silicone oil and bearing inner race sealing position micro oil fat, have the mechanism of specific (special) requirements such as automobile silicon oil filled fan clutch, expansion tightening wheel, automobile current generator and Weaving device etc. can't meet the demands yet the bearing seal performance.

The purpose of this utility model is to overcome the deficiency that above-mentioned prior art exists, and at various mechanisms centering, the specific (special) requirements of small-sized deep groove ball bearing sealing, provides a kind of lips formula axial high sealing deep groove ball bearing.

The utility model is realized with following technological scheme: it comprises bearing outer ring, bearing inner race and is installed in therebetween steel ball, retainer, seal ring that seal space is loaded grease.Its feature is in the position, interior external diameter two ends of bearing inner race U type seal groove to be set, seal ring the inner is provided with two sealing lips, seal ring is packed in the U type seal groove of bearing inner race and is made the one lockjaw by U type seal groove upper-end surface, another lip is mounted on U type seal groove lower end surface with the elasticity interference, and constitutes the axial seal structure.

The beneficial effect that the utility model had: owing on bearing inner race, have U type seal groove, seal ring the inner is provided with two sealing lips, a lockjaw stops internal grease excessive by U type seal groove upper-end surface during assembling, another lip elasticity interference on the seal ring is mounted on U type seal groove lower end surface and constitutes axial seal stoping the infiltration and the immersion of oil outer, water and foreign material, so the more reliable performance of taking into account than former seal ring list lip.This kind airframe bearing can use under extremely harsh operating conditions, as in a large amount of dust and in the extremely strong silicone oil of permeability and external temperature be in-40 ℃～160 ℃, but need not add with the equal proper functioning of any protection facility and reach the rating life.It can be applied in widely has in the various mechanisms of specific (special) requirements the bearing seal performance, and simple in structure, is easy to make.

Further specify the utility model below in conjunction with drawings and Examples.

Fig. 1 is the high sealing deep groove ball bearing that is applicable in the mechanisms such as automobile silicon oil filled fan clutch, automobile current generator, expansion tightening wheel;

Fig. 2 is eccentric wide inner ring high sealing deep groove ball bearing;

Fig. 3 cuts open enlarged view for the sealing configuration office of the high sealing deep groove ball bearing that Fig. 1 and Fig. 2 provide.

Fig. 1 has provided the DDU series high sealing deep groove ball bearing structure general assembly drawing in the mechanisms such as being applicable to automobile fan clutch, automobile current generator, expansion tightening wheel, Fig. 2 has provided a kind of eccentric wide inner ring zanjon high sealing ball bearing general assembly drawing that is applicable to the automobile expansion tightening wheel, and enlarged view cuts open in the sealing configuration office that Fig. 3 has provided the high sealing deep groove ball bearing of above-mentioned two kinds of structural types.The high sealing deep groove ball bearing that Fig. 1 provides is by bearing outer ring 1, bearing inner race 2 and the steel ball 3 that installs additional therebetween, with retainer 4 steel ball 3 is separated back rivet 6 riveteds, seal space is loaded grease, with bearing outer ring 1 on the position, interior external diameter two ends of the corresponding bearing inner race 2 of the seal groove of opening open U type seal groove, the inner of seal ring 5 is provided with two sealing lips 51 and 52, the outer lip of seal ring 5 embeds the seal groove internal fixation of bearing outer ring 1, the location is mounted on U type seal groove lower end surface with the elasticity interference in the U type seal groove that its epipharynx 52 inserts on bearing inner races 2 and sealing lip 51 abuts against U type seal groove upper-end surface and constitutes the axial seal structure.The high sealing deep groove ball bearing that Fig. 2 provides is eccentric wide inner ring 2, and all to provide counter structure identical with Fig. 1 for the structure of other parts.

Claims

1, a kind of high sealing deep groove ball bearing, comprise bearing outer ring, bearing inner race and be installed in therebetween steel ball, retainer, seal ring, it is characterized in that U type seal groove being set in the position, interior external diameter two ends of bearing inner race, seal ring the inner is provided with two sealing lips, seal ring is packed in the U type seal groove of bearing inner race and is made the one lockjaw by U type seal groove upper-end surface, and another lip is mounted on U type seal groove lower end surface and constitutes the axial seal structure with the elasticity interference.