CN101586608A - Hollow cylindrical roller bearing for rolling mill - Google Patents
Hollow cylindrical roller bearing for rolling mill Download PDFInfo
- Publication number
- CN101586608A CN101586608A CNA2008103016576A CN200810301657A CN101586608A CN 101586608 A CN101586608 A CN 101586608A CN A2008103016576 A CNA2008103016576 A CN A2008103016576A CN 200810301657 A CN200810301657 A CN 200810301657A CN 101586608 A CN101586608 A CN 101586608A
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- CN
- China
- Prior art keywords
- roller
- bearing
- cylindrical roller
- hollow cylindrical
- row
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
- F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
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- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of milling equipment or metallurgy of being mainly used in, the hollow cylindrical roller bearing of departments such as mine comprises four row hollow cylindrical rollers (04), double semi outer rings (01) and integral type inner ring (02).Wherein, outer ring (01) middle part and two ends are provided with collar flange to axis direction, and flange limit is in two end faces of every row roller, thus the axial position of qualification roller; Inner ring (02) one end is provided with collar flange laterally, is defined in the end face of this side one row roller.The hollowness of cylindrical roller (04) is preferably 0.45 to 0.55.And roller leaves 0.1 to 0.5 millimeter radial internal clearance between raceway.Bearing of the present invention has that bearing capacity is strong, the characteristics of long service life.
Description
Technical field
The present invention relates to a kind of bearing, more particularly, relate to a kind of four-line column roller bearing.
Background technique
Use the solid cylinder roller bearing on the milling train, only super-huge roller-mill bearing just uses a kind of hollow cylindrical roller bearing more.The roller-mill bearing source of damage is that roller produces with axle raceway contact fatigue and lost efficacy, and promptly the maximum shear stress of certain depth makes the material production crackle under roller and the raceway top layer after certain cycle-index, and crack propagation is peeled off at last under alternating stress continuation effect.
Therefore the large-sized rolling mills hollow roller bearing of prior art its objective is to make things convenient for the bearing pin of retainer to pass roller, and saves between clearancen so that pack roller as much as possible into, thereby improves the bearing capacity of bearing.Be problem, ratio (hollowness) the Hiiragi palace gate of the internal diameter of this hollow roller and external diameter? about 0%.Under the identical situation of roller quantity because the hollowness of hollow roller is less, bearing life compare with solid roller not be improved significantly.
Summary of the invention
At the problems referred to above, the invention provides a kind of milling equipment or metallurgy that is mainly used in heavy duty, the roller bearing of departments such as mine, its purpose is intended to provide a kind of hollow cylindrical roller bearing that reasonable hollowness is arranged for the rotating shaft of bearing radial load, thereby prolong the working life of bearing, and improve the limit speed of bearing.
In order to achieve the above object, the present invention has constructed a kind of hollow cylindrical roller bearing for rolling mill, and comprise four-row cylindrical roller and place the double semi outer rings in the roller outside, and the integral type inner ring that is positioned at the roller inboard.The middle part and the two ends of each semi outer rings are provided with collar flange to axis direction, and this flange limit is in two end faces of every row roller, thus the axial position of qualification roller.One end of inner ring is provided with collar flange laterally, and is defined in the end face of this side one row roller, and the external cylindrical surface of the inner ring the other end is provided with chamfering.The cylindrical roller of this bearing adopts hollow cylindrical roller.
Under the optimal way, the hollowness of cylindrical roller is 0.45 to 0.55.And cylindrical roller leaves radial internal clearance between raceway, and this play is preferably disposed between 0.1 to 0.5 millimeter.
By technique scheme, hollow cylindrical roller bearing for rolling mill of the present invention adopts the hollow cylindrical roller of hollowness between 0.45 to 0.55.Usually, hollowness is that about 50 percent hollow roller is compared with the solid roller of same diameter and length, and area of contact improves 20 to 30 percent, and contact fatigue life improves two to four times.And hollow roller increased the heat diffusion area of roller, increased the space of storing grease in the bearing, helps lubricating.Hollowness is that 50 percent roller weight has alleviated 25 percent approximately, and centrifugal force has reduced 30 percent, thereby has improved the limit speed of bearing.Because the flexibility of hollow roller can be improved the problem of being out of shape each the row raceway roller discontinuity that causes in the multirow bearing owing to roll mandrel, and the available buffer impact load.
The present invention is mainly used on the milling train, also can be widely used in other rotating shaft of bearing radial load.Its advantage is:
1, improved the contact fatigue life of roller-mill bearing, can improve two to five times according to different loads.
2, alleviate 25 of roller weight percent approximately, reduce roller centrifugal force 30 to 40 percent.
3, having improved high speed performance. the load that helps each row roller of multiple row roller-mill bearing evenly distributes.
4, the hollow roller heat diffusion area reaches greatly and stores the grease space and help greatly lubricating.
5, impact load has certain buffer function, is provided with play between hollow roller and raceway, does not have preloading.
Description of drawings
Fig. 1 be hollow cylindrical roller bearing for rolling mill partly cut open structural representation, omit lower half portion of symmetry among the figure.
Embodiment
Cold rolling as shown in Figure 1 roller four-line column roller bearing, no retainer is made up of outer ring 01, inner ring 02 and four row hollow cylindrical rollers 04.Wherein, a pair of outer ring 01 is also put in the four-row cylindrical roller outside, constitutes the double semi outer rings form.The roller inboard is provided with integral type inner ring 02.Each semi outer rings 01 middle part and two ends are provided with collar flange to axis direction, and flange limit is in two end faces of every row roller, thus the axial position of qualification roller.And an end of inner ring 02 is provided with collar flange laterally, is defined in an end face of this side one row roller, thereby further limits the axial position of roller; The other end of inner ring 02 is provided with chamfering in the end of external cylindrical surface.Under the optimal way, the hollowness of cylindrical roller 04 is 0.45 to 0.55.In addition, leave radial internal clearance between cylindrical roller 04 and raceway, under the optimal way, play is 0.1 to 0.5 millimeter.
Bearing of the present invention is limited to the roller hollowness in certain scope, and along with the increase of roller hollowness, the bending deflection of roller and hole wall flexural stress all increase fast.When the roller hollowness 40 percent when following, bending deformation quantity is very little, does not have too big difference with solid roller, can not reach the purpose that improves the bearing contact fatigue life.And when the roller hollowness 60 percent when above, hollow roller flexural fatigue will become the principal mode of bearing failure, therefore can not be used for heavy-duty bearing.Hollowness is that about 50 percent hollow roller is compared with the solid roller of same diameter and length, and area of contact improves 20 to 30 percent, and contact fatigue life improves two to four times.And hollow roller increased the heat diffusion area of roller, increased the space of storing grease in the bearing, helps lubricating.Hollowness is that 50 percent roller weight has alleviated 25 percent approximately, and centrifugal force has reduced 30 percent, thereby has improved the limit speed of bearing.
The roller bearing that is used for milling train that the present invention is made up of outer ring, inner ring, hollow roller, the hollowness of its roller is 0.45 to 0.55, and leave radial internal clearance between hollow roller and raceway, thereby improved the bearing capacity of bearing, and it is long to have prolonged life-span of bearing.
Claims (3)
1. a hollow cylindrical roller bearing for rolling mill is characterized in that, comprise four-row cylindrical roller (04) and place the double semi outer rings (01) in the roller outside, and the integral type inner ring (02) that is positioned at the roller inboard;
Each semi outer rings (01) middle part and two ends are provided with collar flange to axis direction, and described flange limit is in two end faces of every row roller, thus the axial position of qualification roller;
Described inner ring (02) one end is provided with collar flange laterally, is defined in the end face of this side one row roller; Described cylindrical roller (04) is a hollow cylindrical roller.
2. hollow cylindrical roller bearing for rolling mill according to claim 1 is characterized in that, the hollowness of described cylindrical roller (04) is 0.45 to 0.55.
3. hollow cylindrical roller bearing for rolling mill according to claim 1 and 2 is characterized in that, described cylindrical roller (04) leaves radial internal clearance between raceway, and described play is 0.1 to 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008103016576A CN101586608A (en) | 2008-05-19 | 2008-05-19 | Hollow cylindrical roller bearing for rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008103016576A CN101586608A (en) | 2008-05-19 | 2008-05-19 | Hollow cylindrical roller bearing for rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101586608A true CN101586608A (en) | 2009-11-25 |
Family
ID=41370987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008103016576A Pending CN101586608A (en) | 2008-05-19 | 2008-05-19 | Hollow cylindrical roller bearing for rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101586608A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011795A (en) * | 2010-12-01 | 2011-04-13 | 吴江市金茂五金有限公司 | Bearing suitable for addition of lubricating oil |
| CN102889300A (en) * | 2011-07-19 | 2013-01-23 | 谢夫勒科技股份两合公司 | Rotor main support |
-
2008
- 2008-05-19 CN CNA2008103016576A patent/CN101586608A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011795A (en) * | 2010-12-01 | 2011-04-13 | 吴江市金茂五金有限公司 | Bearing suitable for addition of lubricating oil |
| CN102889300A (en) * | 2011-07-19 | 2013-01-23 | 谢夫勒科技股份两合公司 | Rotor main support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091125 |