CN202531642U

CN202531642U - Cylindrical roller bearing

Info

Publication number: CN202531642U
Application number: CN2012201758126U
Authority: CN
Inventors: 王苏岩; 齐玉林; 李艳芬
Original assignee: Beijing Tianma Bearing Co Ltd
Current assignee: Beijing Tianma Bearing Co Ltd
Priority date: 2012-04-24
Filing date: 2012-04-24
Publication date: 2012-11-14
Anticipated expiration: 2022-04-24

Abstract

The utility model discloses a cylindrical roller bearing, which comprises an inner ring, an outer ring and cylindrical rollers. Axis directions of the cylindrical rollers are the same with those of the inner ring and the outer ring, the cylindrical rolls are mounted between the inner ring and the outer ring of the retainer, and radial clearance of the cylindrical rollers relative to the inner ring and the outer ring ranges from 0.38mm to 0.48mm. The cylindrical roller bearing can be used in different environments, rotation inflexibility caused by deformation of the bearing due to overhigh temperature is avoided, stress concentration at two ends of each cylindrical roller is decreased, the service life of the bearing is prolonged further, the replacement period of the bearing is also prolonged, and accordingly a desirable quantity of capital is saved for users.

Description

Roller bearing

Technical field

The utility model relates to a kind of mechanical parts, particularly a kind of roller bearing.

Background technique

In the prior art; Bearing is divided into tapered roller bearing, roller bearing and ball bearing; Every kind of bearing has different functions when on equipment, using; As axial load resistant, anti-radial load or anti-axially and connected load radially or sliding friction changed into rolling friction, according to the required type of bearing and the size of size selected of different working environments, wherein more extensive with the roller bearing application again; When yet the net post roller bearing uses on equipment, because long meeting running time causes bearing heating, according to the principle of expanding with heat and contract with cold; When bearing causes temperature too high owing to running time is long; Just possibly make that roller bearing deforms, and bearing will make when deforming it dumb in rotation process as precision element; Thereby the operation to equipment integral causes bad influence; So making must frequent replacing bearing, and also reduce very low the covert working life that makes roller bearing greatly, has therefore just accounted for the sizable part during integral device is safeguarded in order to the expense of the replacing expenditure of equipment upper bearing (metal).

The model utility content

To the deficiency that exists in the existing technology, the purpose of the utility model is to provide a kind of roller bearing that can significantly prolong the roller bearing life-span.

The technological scheme of the utility model is achieved in that

Roller bearing; Comprise inner ring, outer ring and cylindrical roller; The axis direction of said cylindrical roller is identical with the axis direction of said inner ring and said outer ring; Said cylindrical roller is installed between said inner ring and the said outer ring through retainer, and the radial internal clearance scope of relative inner ring of said cylindrical roller and outer ring is 0.38mm-0.48mm.

Above-mentioned roller bearing, said cylindrical roller two ends all have depression.

Above-mentioned roller bearing, said inner ring has inner ring raceway, has grinding undercut at said inner ring raceway and rib joint.

Above-mentioned roller bearing, said retainer comprise the retainer lid and keep stand that said retainer lid and said maintenance stand are riveted together, and have with said cylindrical roller shape on said retainer lid and the said maintenance stand and roll the chamber accordingly.

Above-mentioned roller bearing, said quantity of rolling the chamber is identical with the quantity of said cylindrical roller.

Above-mentioned roller bearing, each said cylindrical roller relative set is being arranged on said rolling in the chamber.

Above-mentioned roller bearing, said cylindrical roller are at least three.

Above-mentioned roller bearing, said cylindrical roller are row, and said cylindrical roller is 33 altogether.

Above-mentioned roller bearing, said outer ring has U type groove and outer ring raceway, and said U type groove is arranged on the said outer ring outer wall.

Above-mentioned roller bearing has oilhole at said U type bottom land.

The beneficial effect of the utility model is: roller bearing can use under different environment; Thereby bearing can not cause the bearing rotation dumb because of too high the deforming of temperature; Through the processing of precision, reduced the phenomenon that cylindrical roller two ends stress is concentrated, the working life of further having improved bearing; Prolonged the cycle of changing bearing, for the user has practiced thrift the appreciable fund of a stroke count order.

Description of drawings

Fig. 1 is the overall structure schematic representation of the utility model roller bearing,

Fig. 2 is the outer ring structure schematic representation of the utility model roller bearing,

Fig. 3 is the inner ring structural representation of the utility model roller bearing,

Fig. 4 is the roller structure schematic representation of the utility model roller bearing,

Fig. 5 is the retainer stand structure schematic representation of the utility model roller bearing.

Among the figure: the 1-inner ring, the 2-outer ring, the 3-cylindrical roller, 4-U type groove, the 501-outer ring raceway, the 502-inner ring raceway, the 6-oilhole, the 7-grinding undercut, 801-retainer lid, 802-keeps stand, and 9-rolls the chamber, 10-depression, 11-rib.

Embodiment

In conjunction with accompanying drawing the utility model is done further explanation:

As shown in Figure 1; Roller bearing is a single row roller bearing; Totally 33 cylindrical rollers have stronger anti-load carrying capacity, comprise inner ring 1, outer ring 2 and cylindrical roller 3; Said cylindrical roller 3 is identical with the axis direction of said inner ring 1 and said outer ring 2; Said cylindrical roller 3 is installed between said inner ring 1 and the outer ring 2 through retainer, and the radial internal clearance scope of said cylindrical roller 3 relative inner rings 1 and outer ring 2 is 0.38mm-0.48mm, and retainer is stable in order to what keep cylindrical roller between inner ring and outer ring, to arrange; Cylindrical roller can not take place because of at a high speed rotation axially to be changed or departs from preposition; 0.38mm-0.48mm the radial internal clearance scope can fully guarantee roller bearing because the too high Shi Buhui of deforming of temperature influence the flexibility that roller bearing rotates, make improve greatly the working life of bearing, saved the capital consumption of bringing owing to the frequent change bearing.

As shown in Figure 4; Said cylindrical roller two ends all have depression 10; Recessed end cylindrical roller can effectively overcome the two ends stress concentration phenomenon of common cylinder roller, and contact stress is evenly distributed vertically, and maximum contact stress obviously reduces; Improved the anti-contact fatigue ability of rolling bearing and prolonged its working life, saving further fund.

As shown in Figure 2, said outer ring 2 has U type groove 4 and outer ring raceway 501, and said inner ring 1 has inner ring raceway 502; Have grinding undercut 7 at said inner ring raceway 502 with the rib joint; Said U type groove 4 is arranged on 2 outer walls of said outer ring, has oilhole 6 at 4 ends of said U type groove, U type groove 4 and oilhole 6; The user can to bearing removal just can be in bearing lubricating oil filling; Reduce the friction between cylindrical roller 3 relative outer ring raceways 501 and the inner ring raceway 502, two ribs of outer ring raceway 501 and two ribs of inner ring raceway 502 make its firm being installed between inner ring 1 and the outer ring 2 in order to block retainer.

Like Fig. 1 and shown in Figure 5; Said retainer comprises retainer lid 801 and keeps stand 802 to be riveted together; Like Fig. 3 and shown in Figure 4, said retainer lid 801 rolls chamber 9 accordingly with keeping having with said cylindrical roller 3 shapes on the stand 802, and said cylindrical roller 3 is arranged on said rolling in the chamber 9; Retainer rolls in the chamber 9 in order to cylindrical roller 3 is remained on, and prevents cylindrical roller 3 run-off the straights or move to make the rotation of bearing be affected.

The foregoing description only be for clearly explain the utility model create done for example, and be not the qualification of the utility model being created embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.Any conspicuous variation of being extended out within all spirit and principles at the utility model or change still are in the utility model and create among the protection domain of claim.

Claims

1. roller bearing; Comprise inner ring (1), outer ring (2) and cylindrical roller (3); The axis direction of said cylindrical roller (3) is identical with the axis direction of said inner ring (1) and said outer ring (2); It is characterized in that said cylindrical roller (3) is installed between said inner ring (1) and said outer ring (2) through retainer, the radial internal clearance scope of the relative inner ring (1) of said cylindrical roller (3) and outer ring (2) is 0.38mm-0.48mm.

2. roller bearing according to claim 1 is characterized in that, said cylindrical roller (3) two ends all have depression (10).

3. roller bearing according to claim 2 is characterized in that, said inner ring (1) has inner ring raceway (502), has grinding undercut (7) at said inner ring raceway (502) and rib joint.

4. according to the arbitrary described roller bearing of claim 1-3; It is characterized in that; Said retainer comprises retainer lid (801) and keeps stand (802); Said retainer lid (801) and said maintenance stand (802) are riveted together, and have with said cylindrical roller (3) shape on said retainer lid (801) and the said maintenance stand (802) and roll chamber (9) accordingly.

5. roller bearing according to claim 4 is characterized in that, said quantity of rolling chamber (9) is identical with the quantity of said cylindrical roller (3).

6. roller bearing according to claim 5 is characterized in that, each said cylindrical roller (3) relative set is being arranged on said rolling in the chamber (9).

7. according to the arbitrary described roller bearing of claim 5-6, it is characterized in that said cylindrical roller (3) is at least three.

8. roller bearing according to claim 7 is characterized in that, said cylindrical roller (3) is row, and said cylindrical roller (3) is 33 altogether.

9. roller bearing according to claim 8 is characterized in that, said outer ring (2) have U type groove (4) and outer ring raceway (501), and said U type groove (4) is arranged on the outer wall of said outer ring (2).

10. roller bearing according to claim 9 is characterized in that, has oilhole (6) at said U type groove (4) end.