CN101994763A

CN101994763A - Comb retainer for Sendzimir bearing

Info

Publication number: CN101994763A
Application number: CN 201010531895
Authority: CN
Inventors: 曹晓辉; 吕建英; 罗晓秋; 韩超; 武广富; 段同江
Original assignee: Wafangdian Bearing Group Corp
Current assignee: Wafangdian Bearing Group Corp
Priority date: 2010-10-23
Filing date: 2010-10-23
Publication date: 2011-03-30

Abstract

The invention belongs to the technical field of bearings, in particular to a comb retainer for a Sendzimir bearing. The retainer is in a retainer pocket structure shape of a double-segment type comprising an arc and a line and is in the combined type of a part of arc shape and a part of line shape instead of the shape of simple arc pockets, and the depths of the pockets adopt an alternate arrangement mode that one is deep and another is shallow. The invention has the advantages that (1) the common single arc pocket structure of the retainer is changed into the combined type of an arc and a line so that a roll to be assembled can be mounted from the internal diameter of the retainer to avoid scratching a bearing roll and further ensure the accuracy and the service life of the bearing; and (2) the depths of the pockets adopt the alternate arrangement mode that one is deep and another is shallow so as to ensure the axial cascading of the retainer, more importantly improve the lubrication, avoid abrasion and overhigh temperature rise in the high-speed rotation of the bearing and improve the service life and the stability of the bearing.

Description

The comb shape retainer that is used for the Senjimier bearing

Affiliated technical field

The invention belongs to technical field of bearings, relate to a kind of comb shape retainer that is used for the Senjimier bearing.

Background technique

Along with the fast development of home and abroad steel industry, for adapting to the rolling requirement of highi degree of accuracy, high strength cold-rolled sheet material, high-accuracy Senjimier bearing requires more and more higher.

At present, domestic high-accuracy Senjimier bearing with have huge spread abroad, Senjimier bearing 90% is used external import, for realizing high-accuracy Senjimier bearing production domesticization import substitution fast, the research outer ring has three ribs, the high-accuracy Senjimier bearing of biserial cylinder that has retainer is particularly important, but the biserial cylindrical bearing that has rib, reason owing to retainer, the assembling difficulty, the cylindrical bearing not high to precision, traditional assembly method is all right, but for high-accuracy sendzimir mill bearing, this method must cause the loss of bearing accuracy, bearing race must have scuffing simultaneously, and the life-span of bearing also will descend, therefore, must invent a kind of novel retainer, solve this difficult problem.

Summary of the invention

Technological scheme of the present invention is, a kind of comb shape retainer that is used for the Senjimier bearing, retainer has two segment type retainer pocket hole structure shapes that circular arc adds straight line, the pocket hole shape is being not single circular arc pocket hole, but the combining form of a part of circular shape and a part of rectilinear form, the degree of depth in pocket hole adopts one dark one shallow being staggered.

The invention has the beneficial effects as follows, 1. the common single circular arc pocket hole structure of retainer is changed into " circular arc adds the two sections of straight line " type structure, like this, during assembling, roller can be packed into from the retainer internal diameter, has avoided bearing race to be scratched, and then has guaranteed the precision and the life-span of bearing; 2. the degree of depth in pocket hole adopts one dark one shallow staggered form, has guaranteed the axial motion of retainer, the more important thing is to have improved and lubricate that bearing has avoided wearing and tearing and temperature rise too high when high speed rotating, improves bearing life and stability; 3, alleviate retainer weight, suitable running up adopted the outer ring guiding, guarantees the gyrostabilized platform of retainer under the high-speed condition.

Description of drawings

Fig. 1 is high-accuracy Senjimier bearing structure sketch.

Fig. 2 has two segment type retainer pocket hole structure shape figure that circular arc adds straight line for the present invention.

Among the figure: 1, outer ring, 2, inner ring, 3, roller, 4, retainer, 5, spring sealed circle, 6, loose rib.

Embodiment

As shown in Figure 1, the Senjimier bearing is made up of outer ring 1, inner ring 2, roller 3, retainer 4, spring sealed circle 5 and loose rib 6, Fig. 2 is the two segment type retainer pocket hole structure shape figure that circular arc adds straight line that have of Senjimier bearing, retainer 4 has two segment type retainer pocket hole structure shapes that circular arc adds straight line, the pocket hole shape is being not single circular arc pocket hole, but the combining form of a part of circular shape and a part of rectilinear form, the degree of depth in pocket hole adopts one dark one shallow being staggered.

Claims

1. the comb shape retainer that is used for the Senjimier bearing, it is characterized in that, this retainer has two segment type retainer pocket hole structure shapes that circular arc adds straight line, the pocket hole shape is being not single circular arc pocket hole, but the combining form of a part of circular shape and a part of rectilinear form, the degree of depth in pocket hole adopts one dark one shallow being staggered.