CN202371003U

CN202371003U - Drawn cup needle roller bearing

Info

Publication number: CN202371003U
Application number: CN201120528115XU
Authority: CN
Inventors: 孙佳伟; 季良; 许双胞
Original assignee: Jiangsu Nanfang Bearing Co Ltd
Current assignee: Jiangsu Nanfang Bearing Co Ltd
Priority date: 2011-12-16
Filing date: 2011-12-16
Publication date: 2012-08-08
Anticipated expiration: 2021-12-16

Abstract

The utility model provides a drawn cup needle roller bearing, which is installed on a core shaft and includes a seal outer ring with one sealed end, an exposed skeleton type rotating shaft lip-shaped sealing piece, a rolling body and a gasket, wherein the gasket is installed at the bottom of an inner chamber of the seal outer ring; a first step used for erecting the exposed skeleton type rotating shaft lip-shaped sealing piece is arranged at the upper part of the inner chamber of the seal outer ring; the rolling body is installed in the inner chamber of the seal outer ring and positioned between the exposed skeleton type rotating shaft lip-shaped sealing piece and the gasket; the outer diameter at the seal end of the seal outer ring is provided with a second step enabling the drawn cup needle roller bearing to be pressed in the casing conveniently; and the end part at the seal end of the seal outer ring is provided with chamferings for guiding the mounting of the drawn cup needle roller bearing. The drawn cup needle roller bearing provided by the utility model effectively avoids dust, oil and water from entering the bearing and damaging parts, and enables the core shaft installed in the bearing to move axially to a certain extend; and meanwhile the drawn cup needle roller bearing is convenient to assemble through adopting the step-shaped design at the bearing outer ring, and the service life of the bearing is prolonged at the same time.

Description

A kind of drawn cup needle roller bearing

Technical field

The utility model relates to technical field of bearings, particularly a kind of drawn cup needle roller bearing.

Background technique

Bearing is in mechanical transmission course, to work the parts of fixing and reducing the load friction factor, also we can say, when other parts produce relative movement each other on axle, is used for reducing the fixing parts of friction factor and retainer shaft central position in the power transmission process.Its major function is the supported mechanical solid of rotation, in order to the mechanical load friction factor of reduction equipment in transmission process.Press the difference of motor element frictional property, bearing can be divided into two types on rolling bearing and sliding bearing.

Bearing belongs to precision parts, only has the bearing of part in practical application, to damage, and the reason of most damage of bearings is a lot, exceeds the load of originally estimating, like the too small bearing play that cooperation caused of non-effective seal, tension etc.Traditional bearing very easily foreign material occur in bearing inside when equipment operation, the serious wear of rolling element, the corresponding reduction of the efficient during transmission; Simultaneously, bearing is when being fitted into respective housings, and the wall thickness of outer ring is thicker; Need during assembling to be pressed into power bigger, assembling is wasted time and energy, efficient reduces.

The model utility content

The technical problem that the utility model will solve is: a kind of drawn cup needle roller bearing is provided, solves existing bearing and be prone to suck foreign material, the technical problem that the bearing assembling difficulty is high in the course of the work.

The utility model solves the technological scheme that its technical problem adopted: a kind of drawn cup needle roller bearing; Be installed on the mandrel; Comprise sealing the outer ring, exposing matrix type rotating shaft lip-shaped sealing spare, rolling element and pad of end sealing; Said pad is installed in the bottom of sealing the outer ring inner chamber; Seal inner chamber top, outer ring and have and be used to set up the first step that exposes matrix type rotating shaft lip-shaped sealing spare, the said matrix type rotating shaft lip-shaped sealing spare that exposes comprises Steel Skeleton and is installed in the rubber ring in the Steel Skeleton that said Steel Skeleton outer rim also has the outward extending flange that is used for axially locating; Said flange frame is on first step; Seal in the inner chamber of outer ring exposing between matrix type rotating shaft lip-shaped sealing spare and the pad rolling element is installed, the closed end external diameter that seals the outer ring has is convenient to the second step that drawn cup needle roller bearing is pressed into housing, and the end of sealing the closed end of outer ring has and is used for the chamfering that drawn cup needle roller bearing is installed guiding.

For foreign material such as effective blocks dust, the said matrix type rotating shaft lip-shaped sealing spare that exposes is an interference fit with sealing the outer ring inner chamber, and the said matrix type rotating shaft lip-shaped sealing spare that exposes is the lips mouth sealing ring.

Because it is thicker to seal the outer ring wall thickness, in press-fiting process, excessive in order to prevent that bearing is pressed into power when assembling, the monolateral degree of depth of said second step is 0.01～0.06mm.

For the mandrel that guarantees to match with bearing can allow certain axial displacement; Said pad is a ring spacer; Pad has inner groovy towards a side surface of rolling element; The diameter of said inner groovy is greater than the diameter of mandrel, and the inner groovy bottom surface also has the volution trough that is used to store grease of a plurality of circumference uniform distributions, and the grease of storage plays lubricated effect.

As preferably, said volution trough has six, and is running shaft with the pad center line, is distributed in rotation direction on the bottom surface of inner groovy.

In order to make the bearing rotation flexibly, the said inner chamber bottom edge place, outer ring of sealing has the inner fovea part that prevents to seal outer ring and the interference of pad right angle.

The beneficial effect of the utility model is; A kind of drawn cup needle roller bearing of the utility model has effectively prevented dust, oil; Water gets into bearing internal damage part; And the mandrel that is installed in the bearing can have certain axial float, and the step-like design of bearing outer ring has simultaneously reached purpose convenient for assembly, has also prolonged the working life of bearing simultaneously.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is the complete section figure of a kind of drawn cup needle roller bearing of the utility model;

Fig. 2 is the complete section figure that seals the outer ring of a kind of drawn cup needle roller bearing of the utility model;

Fig. 3 is the partial enlarged drawing of Fig. 2;

Fig. 4 is the structural representation that exposes matrix type rotating shaft lip-shaped sealing spare of a kind of drawn cup needle roller bearing of the utility model;

Fig. 5 is the plan view of pad of a kind of drawn cup needle roller bearing of the utility model;

Fig. 6 is the A-A sectional view of Fig. 5.

Among the figure: 1. seal the outer ring, 11. first steps, 12. second steps, 13. inner fovea parts, 14. chamferings 2. expose matrix type rotating shaft lip-shaped sealing spare, 21. Steel Skeletons, 22. rubber rings, 23. flange, 3. rolling element, 4. pad, 41. inner groovies, 42. volution troughs.

Embodiment

Combine accompanying drawing that the utility model is done further detailed explanation now.These accompanying drawings are the schematic representation of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

The specific embodiment of a kind of drawn cup needle roller bearing of the utility model shown in Fig. 1～6, a kind of drawn cup needle roller bearing is installed on the mandrel; Comprise the sealing outer ring 1, expose matrix type rotating shaft lip-shaped sealing spare 2 of end sealing, rolling element 3 and pad 4; Pad 4 is installed in the bottom of sealing outer ring 1 inner chamber, seals 1 inner chamber top, outer ring and has and be used to set up the first step 11 that exposes matrix type rotating shaft lip-shaped sealing spare 2, exposes matrix type rotating shaft lip-shaped sealing spare 2 and comprises Steel Skeleton 21 and be installed in the rubber ring 22 in the Steel Skeleton 21; Steel Skeleton 21 outer rims also have the outward extending flange 23 that is used for axially locating; 23 of flange seal in 1 inner chamber of outer ring and are exposing installation rolling element 3 between matrix type rotating shaft lip-shaped sealing spare 2 and the pad 4 on first step 11, and the closed end external diameter that seals outer ring 1 has is convenient to the second step 12 that drawn cup needle roller bearing is pressed into housing; The end of sealing the closed end of outer ring 1 has the chamfering 14 that is used for drawn cup needle roller bearing installation guiding; The monolateral degree of depth of second step 12 is 0.01～0.06mm, and bearing is when being pressed into the assembling respective housings, and is bigger owing to sealing outer ring 1 wall thickness; Need to be pressed into power big; The chamfering of sealing the external diameter sealing place design of outer ring 1 can effectively play the effect that guiding is installed, and is easy to staff's operation, simultaneously the introducing of second step 12; It is excessive effectively to prevent to be pressed into power, promptly is employed in to seal step is set on the outer ring 1 plays the effect of dodging.Inner in order to prevent effectively that foreign material from getting into bearing, exposing matrix type rotating shaft lip-shaped sealing spare 2 is interference fit with sealing outer ring 1 inner chamber, exposes matrix type rotating shaft lip-shaped sealing spare 2 and is the lips mouth sealing ring.

Pad 4 is a ring spacer, and pad 4 has inner groovy 41 towards a side surface of rolling element 3, and the diameter of inner groovy 41 is greater than the diameter of mandrel; The mandrel that can guarantee like this to match can allow certain axial displacement, and inner groovy 41 bottom surfaces also have the volution trough 42 that is used to store grease of six circumference uniform distributions, and volution trough 42 is a running shaft with pad 4 center lines; Be distributed in rotation direction on the bottom surface of inner groovy 41; Sealing 1 inner chamber bottom edge place, outer ring and have the inner fovea part 13 that prevents to seal outer ring 1 and the interference of pad 4 right angles, is the right angle because tradition is sealed outer ring 1 bottom edge, the right angle occurs in the time of will installing with pad 4 like this and interferes; Further have influence on the flexibility of revolution of bearing; After sealing outer ring 1 bottom edge increase inner fovea part 13, effectively remove Models for Orthogonal Dry and related to, improved the flexibility of revolution of bearing greatly.

With above-mentioned desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must confirm its technical scope according to the claim scope.

Claims

1. drawn cup needle roller bearing; Be installed on the mandrel; It is characterized in that: comprise the sealing outer ring (1), expose matrix type rotating shaft lip-shaped sealing spare (2) of end sealing, rolling element (3) and pad (4); Said pad (4) is installed in the bottom of sealing outer ring (1) inner chamber; Sealing inner chamber top, outer ring (1) has and is used to set up the first step (11) that exposes matrix type rotating shaft lip-shaped sealing spare (2); The said matrix type rotating shaft lip-shaped sealing spare (2) that exposes comprises Steel Skeleton (21) and is installed in the rubber ring (22) in the Steel Skeleton (21); Said Steel Skeleton (21) outer rim also has the outward extending flange (23) that is used for axially locating, and said flange (23) frame seals to be positioned in the inner chamber of outer ring (1) to expose between matrix type rotating shaft lip-shaped sealing spare (2) and the pad (4) rolling element (3) is installed on first step (11); The closed end external diameter that seals outer ring (1) has the second step (12) of being convenient to drawn cup needle roller bearing and being pressed into housing, and the end of sealing the closed end of outer ring (1) has the chamfering (14) that is used for drawn cup needle roller bearing installation guiding.

2. a kind of drawn cup needle roller bearing as claimed in claim 1; It is characterized in that: the said matrix type rotating shaft lip-shaped sealing spare (2) that exposes is an interference fit with sealing outer ring (1) inner chamber, and the said matrix type rotating shaft lip-shaped sealing spare (2) that exposes is the lips mouth sealing ring.

3. a kind of drawn cup needle roller bearing as claimed in claim 1 is characterized in that: the monolateral degree of depth of said second step (12) is 0.01～0.06mm.

4. a kind of drawn cup needle roller bearing as claimed in claim 1; It is characterized in that: said pad (4) is a ring spacer; Pad (4) has inner groovy (41) towards a side surface of rolling element (3); The diameter of said inner groovy (41) is greater than the diameter of mandrel, and inner groovy (41) bottom surface also has the volution trough that is used to store grease (42) of a plurality of circumference uniform distributions.

5. a kind of drawn cup needle roller bearing as claimed in claim 4 is characterized in that: said volution trough (42) has six, and is running shaft with pad (4) center line, is distributed in rotation direction on the bottom surface of inner groovy (41).

6. a kind of drawn cup needle roller bearing as claimed in claim 1 is characterized in that: the said inner chamber bottom edge place, outer ring (1) of sealing has the inner fovea part (13) that prevents to seal outer ring (1) and the interference of pad (4) right angle.