CN202118113U - Integral needle bearing without inner ring - Google Patents
Integral needle bearing without inner ring Download PDFInfo
- Publication number
- CN202118113U CN202118113U CN201120217270XU CN201120217270U CN202118113U CN 202118113 U CN202118113 U CN 202118113U CN 201120217270X U CN201120217270X U CN 201120217270XU CN 201120217270 U CN201120217270 U CN 201120217270U CN 202118113 U CN202118113 U CN 202118113U
- Authority
- CN
- China
- Prior art keywords
- inner ring
- bearing
- rolling element
- retainer
- retaining frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Rolling Contact Bearings (AREA)
Abstract
An integral needle bearing without an inner ring is formed by a bearing outer ring, rolling bodies and a retaining frame. The retaining frame is located in an inner hole of the bearing outer ring, two rolling bodies are parallelly arranged in each window hole of the retaining frame, each rolling body is a cylinder with convexity in the middle, circumferential faces of the rolling bodies opposite to a lateral side of two ends of the window hole of the retaining frame abuts against a locking needle. The integral needle bearing without the inner ring is suitable for engineering machinery such as a hoisting machine, a hydraulic pump and the like, large in load capacity, long in service life and high in rotating accuracy.
Description
Technical field
The utility model belongs to needle bearing, is specifically related to a kind of and the body needle roller bearing without inner ring, and it is used to be fit to engineering machinery such as hoisting machine, oil hydraulic pump.
Background technique
At present, needle roller bearing without inner ring is used increasingly extensive, along with the development of economic technology; Burden requirement to needle roller bearing without inner ring is also increasingly high, can be and improve the load of needle bearing through increasing the rolling element diameter, increasing rolling element length and quantity realizes, and it is bigger completely to adorn the dynamic load rating that profile shaft holds; But the requirement of strength to retainer is high; And the suffered surface friction drag of the rolling element in the full complement bearing is big, and in the working life of so not only having reduced bearing, the while has also been reduced the rotational speed of rolling element; And retainer is a strength member of guiding rolling element; Because the rolling element of needle bearing is longer, the design of retainer and accuracy of manufacturing can directly influence the guidance accuracy of rolling element like this, if the window of each separation roller on the retainer is excessive; Not only influenced the guidance accuracy of rolling element, rolling element is come off; If window is too small, rolling element rotation underaction.So, in the load that increases needle bearing, how to guarantee that the working life of needle bearing and running accuracy are very important.
Summary of the invention
The purpose of the utility model provides a kind of and the body needle roller bearing without inner ring, and its carrying capacity is big, long service life, running accuracy are high.
The purpose of the utility model realizes as follows: be somebody's turn to do and the body needle roller bearing without inner ring, be made up of bearing outer ring, rolling element, retainer, described retainer is in the endoporus of bearing outer ring, two rolling elements of packing into side by side in each fenestra of retainer.
Rolling element is the middle cylindrical body that convexity is arranged.
The two end part side of retainer fenestra to the rolling element circumferential surface against purl.
The utility model has increased the quantity of rolling element as much as possible, thereby has improved the rated static load and the dynamic load rating of bearing under the prerequisite that guarantees retainer intensity, has also just improved the bearing capacity of bearing; Rolling element adopts the convexity design, has changed the distribution of Contact Pair contact pressure, has eliminated the edge effect at rolling element and raceway Contact Pair two ends, thus the working life of further having improved bearing; Retainer adopts the design of two ends purl, has improved the guidance accuracy of rolling element.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
With reference to accompanying drawing; Also the body needle roller bearing without inner ring is made up of bearing outer ring 1, rolling element 2, retainer 3; Retainer 3 is in the endoporus of bearing outer ring 1; Two rolling elements 2 of packing into side by side in retainer 3 each fenestra, rolling element 2 is the middle cylindrical body that convexity is arranged, the two end part side of retainer 3 fenestras to rolling element 2 circumferential surfacies against purl.
Claims (3)
1. one kind and body needle roller bearing without inner ring; Constitute by bearing outer ring (1), rolling element (2), retainer (3); Described retainer (3) is in the endoporus of bearing outer ring (1), it is characterized in that: two rolling elements (2) of packing into side by side in each fenestra of retainer (3).
2. according to claim 1 and body needle roller bearing without inner ring is characterized in that: rolling element (2) is the middle cylindrical body that convexity is arranged.
3. according to claim 1 and body needle roller bearing without inner ring is characterized in that: the two end part side of retainer (3) fenestra to rolling element (2) circumferential surface against purl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120217270XU CN202118113U (en) | 2011-06-24 | 2011-06-24 | Integral needle bearing without inner ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120217270XU CN202118113U (en) | 2011-06-24 | 2011-06-24 | Integral needle bearing without inner ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118113U true CN202118113U (en) | 2012-01-18 |
Family
ID=45459182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120217270XU Expired - Fee Related CN202118113U (en) | 2011-06-24 | 2011-06-24 | Integral needle bearing without inner ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118113U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742529A (en) * | 2013-12-28 | 2014-04-23 | 瓦房店轴承集团有限责任公司 | Cylindrical roller bearing with punched outer ring without inner ring |
| CN103883616A (en) * | 2014-03-10 | 2014-06-25 | 苏州捷德瑞精密机械有限公司 | Sectional rolling body type ringless bearing structure |
-
2011
- 2011-06-24 CN CN201120217270XU patent/CN202118113U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742529A (en) * | 2013-12-28 | 2014-04-23 | 瓦房店轴承集团有限责任公司 | Cylindrical roller bearing with punched outer ring without inner ring |
| CN103883616A (en) * | 2014-03-10 | 2014-06-25 | 苏州捷德瑞精密机械有限公司 | Sectional rolling body type ringless bearing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20150624 |
|
| EXPY | Termination of patent right or utility model |