CN102494030A - Double-row cylindrical roller bearing with double-arc pocket cage - Google Patents
Double-row cylindrical roller bearing with double-arc pocket cage Download PDFInfo
- Publication number
- CN102494030A CN102494030A CN201110412802XA CN201110412802A CN102494030A CN 102494030 A CN102494030 A CN 102494030A CN 201110412802X A CN201110412802X A CN 201110412802XA CN 201110412802 A CN201110412802 A CN 201110412802A CN 102494030 A CN102494030 A CN 102494030A
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- CN
- China
- Prior art keywords
- bearing
- retainer
- cylindrical roller
- cage
- double
- 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.)
- Pending
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- 239000000463 material Substances 0.000 claims abstract description 17
- 239000004677 Nylon Substances 0.000 claims abstract description 16
- 229920001778 nylon Polymers 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 abstract 2
- 239000004014 plasticizer Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
The invention relates to the technical field of bearing structures, in particular to a double-row cylindrical roller bearing which is high in precision and long in service life and applied to precise large equipment having special requirements for use. A cage of the bearing is made of a modified nylon material, the material is formed by adding a plasticizer in an existing nylon material, so that the inside texture of the nylon material is changed so as to ensure that the bearing cage has sufficient working strength at temperature from -30 degrees to +150 degrees, cannot fracture in a brittle mode in a low temperature state, cannot soften or deform in a high temperature state, and further meets the requirements for high precision turning of a machine tool. In addition, the cage adopts double-arc design to enable the cage to be contacted with a cylindrical roller in two sections, and the rest gaps can contain lubricating oil. Two arcs not only can guide a rolling body, but also can lock the roller, thereby enabling the rolling body to be contained in the cage and not to fall out from the cage, lubricating oil is provided so as to reducing heating of the bearing, and service life of the bearing is prolonged.
Description
Technical field
The present invention relates to the bearing structure technical field, relate to highi degree of accuracy, long lifetime Biserial cylindrical roller bearing on a kind of accurate main equipment that is applied to special usage requirement concretely.
Background technique
Biserial cylindrical roller bearing is a kind of application lathe bearing very widely.Biserial cylindrical roller bearing is made up of bearing outer ring, bearing inner race, cylindrical roller and retainer assembly usually.At present, the bearing cage structure of the Biserial cylindrical roller bearing of domestic general machine adopted has 3 kinds of copper cage, iron retainer, nylon cages etc., and its retainer pocket hole all is single camber structure.On the accurate main equipment that special highi degree of accuracy, long lifetime usage requirement are arranged; Do not reach the special use standard of user with copper cage, iron retainer; It is structural unreasonable to adopt nylon cages to exist again, and present common employing single-arc shaped pocket hole retainer is a straight pocket hole retainer structure.Such structural type makes and is formed with very big area of contact between rolling element and the retainer, belongs to full containing state, lubricated influential to bearing.Especially under the state of machine tool chief axis high speed rotating, can produce very big friction, make bearing heating.Reduce bearing working life.The retainer of this structure is not suitable for the high speed rotating of bearing.
Summary of the invention
Defective in view of the prior art existence; The objective of the invention is to provide the double-row cylindrical roller machine tool mainshaft bearing of a kind of new material, new structure, its retainer adopts modified nylon materials, can resist low temperature, high temperature resistance; Under-30-+150 degree difference variation, do not influence the bearing service precision.
In order to achieve the above object, the technological scheme that the present invention adopted is a kind of Biserial cylindrical roller bearing that has two arc pocket holes retainer, and it comprises bearing outer ring, bearing inner race, cylindrical roller and retainer; The bearing inner race raceway has rib, and retainer is sleeved on the interior raceway of bearing, and cylindrical roller is assembled in the two row retainers, and a cylindrical roller is adorned in a retainer pocket hole, and cylindrical roller is pressed onto the pocket hole from the external diameter of retainer; Cylindrical roller contacts with bearing outer ring ball track; It is characterized in that: said retainer is the biserial retainer; Said retainer adopts modified nylon materials, adopts two arc structures, is an arc structure near internal diameter one end, is an arc structure near external diameter one end, and retainer divides two sections to contact with cylindrical roller.
Said modified nylon materials is in nylon material, to increase flexibility agent.
The present invention compares with existing bearing, and its advantage is:
1) retainer adopts modified nylon materials; This material is to have now to increase flexibility agent in the nylon material, and the interior tissue that changes nylon material changes, and guarantees that retainer has enough working strengths between-30-+150 degree; Not embrittlement of low-temperature condition, the condition of high temperature is softening transform not; Thereby guarantee lathe high-precision rotary demand.
2) retainer adopts two circular arcs designs, makes retainer and cylindrical roller divide two sections to contact, and all the other spaces can lubricant; Two circular arcs can play the effect of guiding rolling element, can play the effect of lock roller again, make the rolling physical efficiency retainer of packing into, can not from retainer, drop out again; The pocket hole retainer structure that this part contains can also make bearing in the process of using, reduce the friction between retainer and the rolling element, and good lubricating is provided, and then reduces the heating of bearing.Improve bearing working life.
3) a cover bearing adopts the biserial retainer, and than original single-row retainer dress multiple row rolling element, intensity is higher, and working life is more reliable.
Description of drawings
Fig. 1 is a product schematic representation of the present invention;
Fig. 2 is the B-B sectional view of original retainer;
Fig. 3 is original retainer A-A sectional view;
Fig. 4 is a retainer B-B sectional view;
Fig. 5 is a retainer A-A sectional view;
Among the figure: 1, bearing outer ring, 2, retainer, 3, cylindrical roller, 4, bearing inner race.
Embodiment
In order further to understand the Biserial cylindrical roller bearing that this has two arc pocket holes retainer, invention is specified as follows below in conjunction with accompanying drawing and specific embodiment:
As shown in Figure 1, the Biserial cylindrical roller bearing that has two arc pocket holes retainer provided by the invention, it comprises: bearing outer ring 1, retainer 2, cylindrical roller 3 and bearing inner race 4; Bearing inner race 4 raceways have rib, and retainer 2 is sleeved on bearing inner race 4 raceways, and cylindrical roller 3 is assembled in the two row retainers 2, and a cylindrical roller 3 is adorned in retainer 2 pocket holes, and cylindrical roller 3 is pressed onto the pocket hole from the external diameter of retainer 2; Cylindrical roller 3 contacts with bearing outer ring 1 raceway; Said retainer 2 adopts modified nylon materials, adopts two arc structures, is an arc structure near internal diameter one end; Near external diameter one end is an arc structure; Retainer 2 and cylindrical roller 3 minutes contact for two sections, and rolling element is in turning course, and cylindrical roller 3 contacts with two sections circular arcs of retainer 2.
Claims (2)
1. one kind has pair Biserial cylindrical roller bearing of arc pocket holes retainer, and it comprises bearing outer ring, bearing inner race, cylindrical roller and retainer; The bearing inner race raceway has rib, and retainer is sleeved on the interior raceway of bearing, and cylindrical roller is assembled in the two row retainers, and a cylindrical roller is adorned in a retainer pocket hole, and cylindrical roller is pressed onto the pocket hole from the external diameter of retainer; Cylindrical roller contacts with bearing outer ring ball track; It is characterized in that: said retainer is the biserial retainer; Said retainer adopts modified nylon materials, adopts two arc structures, is an arc structure near internal diameter one end, is an arc structure near external diameter one end, and retainer divides two sections to contact with cylindrical roller.
2. said a kind of Biserial cylindrical roller bearing that has two arc pocket holes retainer according to claim 1, it is characterized in that: modified nylon materials is in nylon material, to increase flexibility agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110412802XA CN102494030A (en) | 2011-12-13 | 2011-12-13 | Double-row cylindrical roller bearing with double-arc pocket cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110412802XA CN102494030A (en) | 2011-12-13 | 2011-12-13 | Double-row cylindrical roller bearing with double-arc pocket cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102494030A true CN102494030A (en) | 2012-06-13 |
Family
ID=46185878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110412802XA Pending CN102494030A (en) | 2011-12-13 | 2011-12-13 | Double-row cylindrical roller bearing with double-arc pocket cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102494030A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280769A (en) * | 1998-03-27 | 1999-10-15 | Nippon Seiko Kk | Roller bearing |
| CN2644763Y (en) * | 2003-04-02 | 2004-09-29 | 洛阳轴承集团有限公司 | Integral cage with arc pocket |
| JP2008121888A (en) * | 2006-10-19 | 2008-05-29 | Nsk Ltd | Cylindrical roller bearing and spindle device for machine tool |
| DE102008016358A1 (en) * | 2008-03-29 | 2009-10-01 | Schaeffler Kg | Cylindrical roller bearing i.e. multi ring-eccentric roller bearing for e.g. sheet printing machine, has indentations and recesses feeding lubricating grease in bearing to contact of rollers and discharging excess grease into storage |
| CN101586605A (en) * | 2008-05-19 | 2009-11-25 | 瓦房店第一轧机轴承制造有限公司 | Double-row roller bearing without flange |
| CN101788007A (en) * | 2009-12-07 | 2010-07-28 | 瓦房店轴承集团有限责任公司 | Novel machine tool mainshaft bearing with nylon cages |
| CN202371020U (en) * | 2011-12-13 | 2012-08-08 | 大连凯特乐机械有限公司 | Double-row cylindrical roller bearing with double-arc pocket holder |
-
2011
- 2011-12-13 CN CN201110412802XA patent/CN102494030A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280769A (en) * | 1998-03-27 | 1999-10-15 | Nippon Seiko Kk | Roller bearing |
| CN2644763Y (en) * | 2003-04-02 | 2004-09-29 | 洛阳轴承集团有限公司 | Integral cage with arc pocket |
| JP2008121888A (en) * | 2006-10-19 | 2008-05-29 | Nsk Ltd | Cylindrical roller bearing and spindle device for machine tool |
| DE102008016358A1 (en) * | 2008-03-29 | 2009-10-01 | Schaeffler Kg | Cylindrical roller bearing i.e. multi ring-eccentric roller bearing for e.g. sheet printing machine, has indentations and recesses feeding lubricating grease in bearing to contact of rollers and discharging excess grease into storage |
| CN101586605A (en) * | 2008-05-19 | 2009-11-25 | 瓦房店第一轧机轴承制造有限公司 | Double-row roller bearing without flange |
| CN101788007A (en) * | 2009-12-07 | 2010-07-28 | 瓦房店轴承集团有限责任公司 | Novel machine tool mainshaft bearing with nylon cages |
| CN202371020U (en) * | 2011-12-13 | 2012-08-08 | 大连凯特乐机械有限公司 | Double-row cylindrical roller bearing with double-arc pocket holder |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120613 |