CN202531656U

CN202531656U - Retainer ring sheet-welded bearing

Info

Publication number: CN202531656U
Application number: CN2012201688890U
Authority: CN
Inventors: 周海龙; 张文年; 王勇
Original assignee: Wuxi Chengshi Bearing Co Ltd
Current assignee: Wuxi Chengshi Bearing Co Ltd
Priority date: 2012-04-19
Filing date: 2012-04-19
Publication date: 2012-11-14
Anticipated expiration: 2022-04-19

Abstract

The utility model relates to a retainer ring sheet-welded bearing which is especially used for a pneumatic hammer, belonging to the technical field of electric tool accessories. The welded retainer ring sheet bearing comprises an outer ring, an inner ring, rolling bodies, a retaining frame and seal rings, wherein the rolling bodies are connected with the outer ring and the inner ring and are positioned by using the retaining frame to guarantee the gap and the coaxiality of the inner ring and the outer ring, the rolling bodies are evenly isolated by the retaining body, the seal rings are installed in dustproof slots at both ends of the outer ring, a retainer ring is welded at one end of the inner ring, and welding points are arranged between the inner ring and the outer ring. The number of the welding points is four, and the four welding points are evenly distributed. In the utility model, because the inner ring and the outer ring are welded firmly, the displacement between the inner ring and the welded retainer ring due to axial force can be avoided, the positioning accuracy can be better guaranteed, and the normal operation of the bearing and the entire component can be guaranteed.

Description

Welding back-up ring sheet bearing

Technical field

The utility model relates to a kind of welding back-up ring sheet bearing, specifically is used for pneumatic hammer, belongs to electric tool accessory technical field.

Background technique

At present, the welding back-up ring sheet bearing that is used on the pneumatic hammer machine mainly is made up of outer ring, inner ring, retainer, rolling element, Sealing, back-up ring sheet etc.Be employed in inner ring welding back-up ring sheet location lasso, play the effect of leakproof grease, the shock resistance and dustproof that plays the role of positioning of welding back-up ring with Sealing.The location lasso caused welding back-up ring sheet not keep original concentricity and obscission takes place with inner ring because of loosening displacement takes place in the effect that receives axial impact force when this kind bearing was assemblied on the workpiece, made bearing failure.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned deficiency; Thereby provide a kind of and increase solder joint 23 at the welding back-up ring; Can avoid welding the back-up ring sheet comes off owing to stressed; Prevent that bearing working lost efficacy, guarantee Location accuracy, thereby guarantee the welding back-up ring sheet bearing of bearing and the running of whole parts proper functioning.

According to the technological scheme that the utility model provides, a kind of welding back-up ring sheet bearing comprises outer ring, inner ring, rolling element, retainer, seal ring; Institute's rolling element connects outer ring and inner ring, and with the retainer location, guarantees Internal and external cycle gap and coaxality; The even separation roller of retainer; In the dustproof groove in two ends, outer ring seal ring is housed, characteristic is: said inner ring one end welding back-up ring is provided with soldering point between said inner ring and the welding back-up ring.

Said soldering point is four, and four welding point uniform distribute,

Compared with present technology the utility model has the following advantages:

The utility model is simple, compact and reasonable for structure; Avoid the welding back-up ring to come off, improved bearing working life and working stability.The utility model structure can make location welding back-up ring sheet lasso firmly be fixed on the inner ring original position; And guaranteed the Location accuracy of bearing; Thereby avoided the non-abrasiveness of bearing to lose efficacy; Guaranteed the specified working life of bearing, reduced bearing because of inefficacys that come off of welding back-up ring sheet, the utilization ratio of raising product.

Description of drawings

Fig. 1 is the utility model bearing structure schematic representation.

Fig. 2 is the utility model welding back-up ring chip architecture schematic representation.

Embodiment

Following the utility model will combine the embodiment in the accompanying drawing to further describe:

Like Fig. 1, shown in Figure 2, comprise outer ring 1, inner ring 2, rolling element 4, retainer 5, seal ring 6, welding back-up ring 7 etc.

This practicality welding back-up ring sheet bearing adopts rolling element 4 connection outer rings 1 and inner ring 2, and with retainer 5 location, guarantees Internal and external cycle gap and coaxality.Retainer 5 even separation rollers 4; And keep rolling element 4 steady in a long-term to turn round; In the dustproof groove in 1 two ends, outer ring seal ring 6 is housed, inner ring 2 one ends welding back-up ring 7, and in the Internal and external cycle raceway groove, inject lubricating grease; Effectively like this stoped the bearing leakage that grease may occur in running up, it is inner to have guaranteed not have foreign material to get into bearing simultaneously.4 solder joints 3 of inner ring 2 end faces evenly distribute, and guarantee that bonding pad and inner ring are stressed even, prevent discontinuity and cause welding insecure phenomenon.Welding back-up ring sheet covers seal ring 6, and it is inner to prevent that better foreign material from getting into bearing.When welding back-up ring bobbin bore axial impact loading, welding back-up ring 7 protection Sealings were out of shape because of receiving axial impact loading, had prevented that effectively bearing from leaking fat and causing losing efficacy, and prolonged its working life.

Because the bonding pad solder joint is designed to 4 solder joints, external form precision height and firm welding have guaranteed its stability in use, are widely used.Therefore, this characteristic is applicable to 608YA, 609YA, and profile shafts such as 6000YA hold.

Claims

1. one kind is welded back-up ring sheet bearing; Comprise outer ring (1), inner ring (2), rolling element (4), retainer (5), seal ring (6); Institute's rolling element (4) connects outer ring (1) and inner ring (2), and with retainer (5) location, guarantees Internal and external cycle gap and coaxality; Retainer (5) is separation roller (4) evenly; In the dustproof groove in two ends, outer ring (1) seal ring (6) is housed, it is characterized in that: said inner ring (2) one ends welding back-up ring (7) is provided with soldering point (3) between said inner ring (2) and the welding back-up ring (7).

2. a kind of welding back-up ring sheet bearing as claimed in claim 1, it is characterized in that: said soldering point (3) is four, four welding point uniform distribute.