CN205244127U - High -speed two -way thrust angular contact ball bearing - Google Patents
High -speed two -way thrust angular contact ball bearing Download PDFInfo
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- CN205244127U CN205244127U CN201521039034.8U CN201521039034U CN205244127U CN 205244127 U CN205244127 U CN 205244127U CN 201521039034 U CN201521039034 U CN 201521039034U CN 205244127 U CN205244127 U CN 205244127U
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- angular contact
- steel ball
- ball bearing
- speed
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Abstract
The utility model discloses a high -speed two -way thrust angular contact ball bearing, including outer lane, inner circle, steel ball and keeping the ware, the inner circle is connected to form by two and half inner circles, places the holder respectively in the channel of outer lane and two and half inner circles, is equipped with the steel ball in the holder, the contact angle alpha of bearing is 20 5, the pocket hole that keeps the ware radially is the cylindricality pore structure for following. The utility model discloses a reduce the bearing contact angle, change and keep ware pocket pore structure and to change steel ball diameter and quantity, make the utility model discloses a bearing had both possessed the advantage of higher running accuracy, higher traditional structures such as bearing capacity, had improved the limit working speed of bearing in practical application again, had satisfied the demand of the new construction of high precision equipment and device to this series bearing.
Description
Technical field
The utility model belongs to bidirectional angular contact thrust ball bearing, relates in particular to a kind of high-speed bidirectional angular contact thrust ball bearing.
Background technology
Bidirectional angular contact thrust ball bearing belongs to precise rotating platform bearing classification, this bearing a kind of angular contact thrust ball bearing that the outer ring with mounting flange, two inner rings that separate and with installing hole and two row steel balls form by, be mainly used in rotary table, the accurate measurement testing equipment etc. of numerical control machining center, under general service condition, its running accuracy is higher, bearing capacity is stronger, and axis rigidity is better, and maximal work rotating speed is below 2000RPM; Once bearing is worked under higher than this speed conditions, will produce vibration, send noise even raceway position temperature sharply rise, cause the situation of the part such as raceway and steel ball burn, but along with scientific and technological develop rapidly, numerically-controlled precise turntable adopts the high speed turntable pattern of integrate motor rotor to occur thereupon, under this condition, just require the maximal work rotating speed of bearing to reach the even higher rotating speed of speed of 3500RPM, therefore market is in the urgent need to a kind of bearing appearance that can meet proper working load and precision, can reach again 3500RPM and above rotating speed.
Summary of the invention
In order to solve the maximal work turn up of existing bidirectional angular contact thrust ball bearing less than the even more high-revolving problem of speed of 3500RPM, the purpose of this utility model is to provide a kind of high-speed bidirectional angular contact thrust ball bearing, when making maximal work rotating speed of the present utility model reach 3500RPM and above rotating speed by changing the method such as pocket pore structure of contact angle, retainer, also retain that the running accuracy that existing bidirectional angular contact thrust ball bearing possesses is higher, bearing capacity is strong, the good advantage of axis rigidity.
In order to realize foregoing invention object, the utility model adopts technical scheme as described below:
A kind of high-speed bidirectional angular contact thrust ball bearing, comprises outer ring, inner ring, steel ball and retainer, and inner ring is to be connected to form by two and half inner rings, in the raceway groove of outer ring and two and half inner rings, places respectively retainer, and steel ball is housed in retainer; The contact angle α of described bearing is 20 ° ± 5 °, and the pocket hole of described retainer is for being radially cylindrical hole structure.
Further, the diameter of described steel ball is inner ring diameter 12%.
Further, the outer circumference surface of described outer ring is provided with annular connecting portion, and on the upper surface of connecting portion, edge is circumferentially laid with installing hole.
Further, described connecting portion and the outer ring structure that is formed in one.
Further, two and half inner rings of composition inner ring connect by screw fastening.
Owing to adopting technique scheme, the utlity model has following superiority:
1, the contact angle of traditional bidirectional angular contact thrust ball bearing is 60o, contact angle is reduced to 20o ± 5o by bearing of the present utility model, reduce to greatest extent the restriction of bearing contact angle to its high speed performance, by facts have proved, its maximal work rotating speed has obtained greatly improving;
2, the pocket hole of the retainer of traditional bidirectional angular contact thrust ball bearing is ball shape structure, the utility model changes spherical packet hole into radially cylindricality pocket hole, the contact area that reduces steel ball and retainer pocket hole is disturbed to reach the friction that reduces between retainer pocket hole and steel ball and rotation each other, in addition, by the ball bag-shaped cylindrical hole that makes into, reduce to a certain extent the weight of retainer, while making bearing High Rotation Speed, the centrifugal force of bearing reduces, reduce rocking and self-vibration of retainer, be conducive to eliminate vibration, noise and the heating of bearing;
3, in traditional bidirectional angular contact thrust ball bearing, conventionally steel ball size is 8% left and right of bearing inner race diameter, steel ball size is increased to 12% of inner ring diameter by the utility model, and then also just reduce accordingly steel ball number, to make the utility model in the situation that having reduced contact angle, ensure that the axial carrying capacity of bearing does not change substantially.
Brief description of the drawings
Fig. 1 is the structural representation of traditional bidirectional angular contact thrust ball bearing;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is the structural representation of retainer of the present utility model;
In figure: 01-outer ring; 02-inner ring; 03-retainer; 04-steel ball; 05-pocket hole.
Detailed description of the invention:
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
As shown in Figure 2,3, a kind of high-speed bidirectional angular contact thrust ball bearing, comprises outer ring 01, inner ring 02, steel ball 04 and retainer 03, and inner ring 01 is to be connected to form by two and half inner rings, in the raceway groove of outer ring 01 and two and half inner rings, be respectively equipped with retainer 03, in retainer 03, be equiped with steel ball 04; The contact angle α of described bearing is 20 ° ± 5 °, and the pocket hole 05 of described retainer 03 is for being radially cylindrical hole structure.
The diameter of described steel ball 04 is 12% of inner ring 03 diameter.
The outer circumference surface of described outer ring 01 is provided with annular connecting portion, and on the upper surface of connecting portion, edge is circumferentially laid with installing hole.
Described connecting portion and outer ring 01 structure that is formed in one.
Two and half inner rings of composition inner ring 02 connect by screw fastening.
The utility model is compared with traditional bidirectional angular contact thrust ball bearing:
By reducing bearing contact angle, change retainer pocket pore structure and changing steel ball size and quantity, make bearing of the present utility model both possess the advantage of the traditional structures such as higher running accuracy, higher bearing capacity, improve again bearing maximal work rotating speed in actual applications, the demand of the new construction that has met high-precision equipment and device to this series bearing.
Claims (5)
1. a high-speed bidirectional angular contact thrust ball bearing, comprises outer ring, inner ring, steel ball and retainer, and inner ring is to be connected to form by two and half inner rings, in the raceway groove of outer ring and two and half inner rings, places respectively retainer, and steel ball is housed in retainer; It is characterized in that: the contact angle α of described bearing is 20 ° ± 5 °, and the pocket hole of described retainer is for being radially cylindrical hole structure.
2. high-speed bidirectional angular contact thrust ball bearing according to claim 1, is characterized in that: the diameter of described steel ball is inner ring diameter 12%.
3. high-speed bidirectional angular contact thrust ball bearing according to claim 1 and 2, is characterized in that: the outer circumference surface of described outer ring is provided with annular connecting portion, and on the upper surface of connecting portion, edge is circumferentially laid with installing hole.
4. high-speed bidirectional angular contact thrust ball bearing according to claim 3, is characterized in that: described connecting portion and the outer ring structure that is formed in one.
5. high-speed bidirectional angular contact thrust ball bearing according to claim 4, is characterized in that: two and half inner rings of composition inner ring connect by screw fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039034.8U CN205244127U (en) | 2015-12-14 | 2015-12-14 | High -speed two -way thrust angular contact ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521039034.8U CN205244127U (en) | 2015-12-14 | 2015-12-14 | High -speed two -way thrust angular contact ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205244127U true CN205244127U (en) | 2016-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521039034.8U Active CN205244127U (en) | 2015-12-14 | 2015-12-14 | High -speed two -way thrust angular contact ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205244127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286581A (en) * | 2016-08-26 | 2017-01-04 | 洛阳轴研科技股份有限公司 | One assembles angular contact ball bearing |
-
2015
- 2015-12-14 CN CN201521039034.8U patent/CN205244127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286581A (en) * | 2016-08-26 | 2017-01-04 | 洛阳轴研科技股份有限公司 | One assembles angular contact ball bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |