CN103438092A - Inner ring single blocking edge non-contact NU type cylindrical roller bearing - Google Patents
Inner ring single blocking edge non-contact NU type cylindrical roller bearing Download PDFInfo
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- CN103438092A CN103438092A CN2013103458642A CN201310345864A CN103438092A CN 103438092 A CN103438092 A CN 103438092A CN 2013103458642 A CN2013103458642 A CN 2013103458642A CN 201310345864 A CN201310345864 A CN 201310345864A CN 103438092 A CN103438092 A CN 103438092A
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- bearing
- inner ring
- cylindrical roller
- rib
- inner race
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Abstract
The invention provides an inner ring single blocking edge non-contact NU type cylindrical roller bearing which comprises a bearing outer ring, a bearing inner ring and cylindrical rollers, wherein blocking edges are arranged on two sides of the bearing outer ring; the distance between the blocking edges on the two sides is matched with the length of the cylindrical rollers. The inner ring single rib non-contact NU type cylindrical roller bearing is characterized in that a single-side rib is arranged on one side of the bearing inner ring, a clearance is reserved between the single-side rib of the bearing inner ring and the cylindrical rollers and is greater than the axial movement value of a shaft, a constant clearance is kept between the cylindrical rollers and the single-side rib of the bearing inner ring so that the cylindrical rollers and the single-side rib stay in a non-contact working state. The external diameter of the single-side rib of the bearing inner ring is greater than the diameter of a shaft shoulder so that the bearing is convenient to dismount from the shaft.
Description
Technical field
The present invention relates to a kind of roller bearing, the contactless NU type of a kind of inner ring single block border roller bearing is particularly disclosed, bearing structure of the present invention is identical with NJ type cylindrical roller bearing, but act on identical with the N-type cylindrical roller bearing with the NU type, do not bear axial force, for the soft sector of axle.
Background technique
The NU type of prior art (accompanying drawing 2) or N-type (accompanying drawing 3) cylindrical roller bearing can not bear axial force, are generally used for the floating end of axle.For high-speed bearing, in the oil jet lubrication situation, form airflow layer around the inner assembly of N-type airframe bearing High Rotation Speed, add the centrifugal force that High Rotation Speed produces, lubricant oil is difficult to enter interior raceway, and the inner ring raceway lubrication effect is bad, easily causes the raceway early fatigue to peel off.
NU type cylindrical roller bearing inner ring is without rib, the two ribs in outer ring, and under the oil jet lubrication condition, lubricant oil can directly be sprayed onto on interior raceway, and under centrifugal action, lubricant oil can enter outer raceway, so lubricating condition is better simultaneously.But there are two problems in NU type cylindrical roller bearing: the one, and inner ring is changed into without after rib by two ribs, and intensity reduces greatly, under fully loaded transportation condition, finds that there is the inner ring cracking phenomena in using process; The 2nd, inner ring and axle interference fit, without rib, dismantle cumbersome due to inner ring.
Summary of the invention
The objective of the invention is to address the deficiencies of the prior art, design the contactless NU type of a kind of inner ring single block border roller bearing, is a kind of under high speed, severe duty, adopts the contactless reinforced NU type roller bearing of inner ring single block border of oil jet lubrication.
The present invention is achieved in that the contactless NU type of a kind of inner ring single block border roller bearing, comprise bearing outer ring, bearing inner race and cylindrical roller, the bearing outer ring both sides are provided with rib, distance between the rib of described both sides is complementary with cylindrical roller length, it is characterized in that: described bearing inner race one side is provided with one-sided rib, leave gap between the one-sided rib of described bearing inner race and cylindrical roller, this gap is greater than the axial movement value of axle, it is permanent gapped that the one-sided rib of cylindrical roller and bearing inner race keeps, and is contactless working state.The one-sided rib external diameter of described bearing inner race is greater than shaft shoulder diameter dimension, is convenient to bearing is dismantled from axle.
Structure of the present invention is identical with NJ type cylindrical roller bearing (accompanying drawing 1), i.e. two ribs in outer ring, inner ring single block border.Difference is that the one-sided rib of bearing inner race of the present invention is thinner than the both sides rib of bearing outer ring, and the one-sided rib of cylindrical roller and bearing inner race leaves gap
δ(accompanying drawing 4), and bearing is installed and during work, gap
δbe greater than the axial float limit of axle, so the present invention do not bear axial force, do not play the axial limiting effect.
Working principle of the present invention is: under the oil jet lubrication condition, lubricant oil is not with rib one side to enter bearing (accompanying drawing 4) from bearing inner race of the present invention, the same with NU type cylindrical roller bearing, high lubricating effect; In addition, in order to adapt to severe duty, bearing inner race one side increases one-sided rib, increases bearing inner race intensity on the one hand, is convenient on the other hand the dismounting (accompanying drawing 5) of bearing inner race.
The invention has the beneficial effects as follows: structural principle of the present invention is simple, effectively solved under high speed, severe duty, the floating end N-type short columnar roller roller bearing of the axle of employing oil jet lubrication mode lubricates bad and NU type cylindrical roller bearing inner ring intensity is low and dismantle inconvenient problem.
The accompanying drawing explanation
Fig. 1 is prior art NJ type cylindrical roller bearing structural representation.
Fig. 2 is prior art NU type cylindrical roller bearing structural representation.
Fig. 3 is prior art N-type cylindrical roller bearing structural representation.
Fig. 4 is NU type roller bearing structural representation of the present invention.
Fig. 5 is the mounting structure schematic diagram of inner ring of the present invention and axle.
In figure: 1, NJ type cylindrical roller bearing; 2, NU type cylindrical roller bearing; 3, N-type cylindrical roller bearing; 4, cylindrical roller; 5, axle; 6, bearing inner race; 7, bearing outer ring; 8, one-sided rib.
Embodiment
With reference to the accompanying drawings 4 and 5, the contactless NU type of a kind of inner ring single block border of the present invention roller bearing, comprise bearing outer ring 7, bearing inner race 6 and cylindrical roller 4, and the bearing outer ring both sides are provided with rib, and the distance between the rib of both sides is complementary with cylindrical roller 4 length.Bearing inner race 6 one sides are provided with one- sided rib 8, and 4 of one-sided rib 8 and cylindrical rollers leave gap
δ, this gap
δbe greater than the axial movement value of axle 5, cylindrical roller 4 keeps permanent gapped with the one-sided rib 8 of bearing inner race 6, is contactless working state.The external diameter of one-sided rib 8 is greater than shaft shoulder diameter dimension, is convenient to bearing from axle 5 dismountings.
Structure of the present invention is identical with NJ type cylindrical roller bearing (accompanying drawing 1), i.e. two ribs of bearing outer ring, bearing inner race single block border.The present invention, for the floating end of axle, does not bear axial force in order to realize the present invention, does not play the axial limiting effect, and in the time of will guaranteeing the bearing normal operation, roller and rib are gapped
δ, and gap
δbe greater than the maximum axial shifting amount of axle, so that the present invention is designed to the one-sided rib of bearing inner race is thinner than the rib of bearing outer ring both sides, cylindrical roller and bearing inner race rib leave gap
δ, and bearing is installed and during work, gap
δbe greater than the axial float limit of axle.Gap
δlarge I by the thickness of the one-sided rib of bearing inner race, adjusted.On the other hand, the one-sided rib external diameter of bearing inner race is greater than shaft shoulder size (accompanying drawing 5), during dismounting, can bearing inner race be left behind with drawing horse to stick one-sided rib.
During work, under the oil jet lubrication condition, lubricant oil is not with rib one side to enter bearing from bearing inner race of the present invention, the same with NU type cylindrical roller bearing, high lubricating effect; In addition, in order to adapt to severe duty, bearing inner race one side of the present invention increases one-sided rib, has increased bearing inner race intensity on the one hand, is convenient on the other hand the dismounting of bearing inner race.
Claims (2)
1. the contactless NU type of an inner ring single block border roller bearing, comprise bearing outer ring, bearing inner race and cylindrical roller, the bearing outer ring both sides are provided with rib, distance between the rib of described both sides is complementary with cylindrical roller length, it is characterized in that: described bearing inner race one side is provided with one-sided rib, leave gap between the one-sided rib of described bearing inner race and cylindrical roller, this gap is greater than the axial movement value of axle, it is permanent gapped that the one-sided rib of cylindrical roller and bearing inner race keeps, and is contactless working state.
2. according to the contactless NU type of the described a kind of inner ring single block border of claim 1 roller bearing, it is characterized in that: the one-sided rib external diameter of described bearing inner race is greater than shaft shoulder diameter dimension, is convenient to bearing is dismantled from axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103458642A CN103438092A (en) | 2013-08-09 | 2013-08-09 | Inner ring single blocking edge non-contact NU type cylindrical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103458642A CN103438092A (en) | 2013-08-09 | 2013-08-09 | Inner ring single blocking edge non-contact NU type cylindrical roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438092A true CN103438092A (en) | 2013-12-11 |
Family
ID=49691795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103458642A Pending CN103438092A (en) | 2013-08-09 | 2013-08-09 | Inner ring single blocking edge non-contact NU type cylindrical roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103438092A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154491A (en) * | 1977-04-14 | 1979-05-15 | Fmc Corporation | Retainer ring for cylindrical roller bearings |
| US4222620A (en) * | 1976-08-18 | 1980-09-16 | Skf Industries, Inc. | Cage for a rolling bearing made of synthetic material |
| CN101769308A (en) * | 2008-12-26 | 2010-07-07 | 瓦房店福斯特轴承科技开发有限公司 | Single row cylindrical roller bearings for rolling mills with side ribs |
| CN102305239A (en) * | 2011-09-14 | 2012-01-04 | 瓦房店工业冶金轴承制造有限公司 | Super-huge self-aligning roller bearing |
| CN203395004U (en) * | 2013-08-09 | 2014-01-15 | 上海特安一凯轴承有限公司 | Non-contact NU-type cylindrical roller bearing with single rib on inner ring |
-
2013
- 2013-08-09 CN CN2013103458642A patent/CN103438092A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222620A (en) * | 1976-08-18 | 1980-09-16 | Skf Industries, Inc. | Cage for a rolling bearing made of synthetic material |
| US4154491A (en) * | 1977-04-14 | 1979-05-15 | Fmc Corporation | Retainer ring for cylindrical roller bearings |
| CN101769308A (en) * | 2008-12-26 | 2010-07-07 | 瓦房店福斯特轴承科技开发有限公司 | Single row cylindrical roller bearings for rolling mills with side ribs |
| CN102305239A (en) * | 2011-09-14 | 2012-01-04 | 瓦房店工业冶金轴承制造有限公司 | Super-huge self-aligning roller bearing |
| CN203395004U (en) * | 2013-08-09 | 2014-01-15 | 上海特安一凯轴承有限公司 | Non-contact NU-type cylindrical roller bearing with single rib on inner ring |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131211 |