CN203395004U - Non-contact NU-type cylindrical roller bearing with single rib on inner ring - Google Patents
Non-contact NU-type cylindrical roller bearing with single rib on inner ring Download PDFInfo
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- CN203395004U CN203395004U CN201320485662.3U CN201320485662U CN203395004U CN 203395004 U CN203395004 U CN 203395004U CN 201320485662 U CN201320485662 U CN 201320485662U CN 203395004 U CN203395004 U CN 203395004U
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- Prior art keywords
- bearing
- cylindrical roller
- rib
- inner ring
- inner race
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Abstract
The utility model discloses a non-contact NU-type cylindrical roller bearing with a single rib on an inner ring. The non-contact NU-type cylindrical roller bearing comprises a bearing outer ring, a bearing inner ring and a cylindrical roller, wherein ribs are arranged at two sides of the bearing outer ring; the distance between the ribs at two sides is matched with the length of the cylindrical roller. The non-contact NU-type cylindrical roller bearing is characterized in that the single rib is arranged at one side of the bearing inner ring; a gap is reserved between the single rib of the bearing inner ring and the cylindrical roller and is larger than the axial movement distance of a shaft; a gap is constantly kept between the cylindrical roller and the single rib of the bearing inner ring, and is in a non-contact work state; the outer diameter of the single rib of the bearing inner ring is greater than the diameter of a shaft shoulder. Thus, the dismantling of the bearing from the shaft is facilitated.
Description
Technical field
The utility model 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 utility model is identical with NJ type cylindrical roller bearing, but act on identical with N-type cylindrical roller bearing with 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 oil jet lubrication situation, the inner assembly of N-type airframe bearing High Rotation Speed forms airflow layer around, add the centrifugal force that High Rotation Speed produces, lubricant oil is difficult to enter interior raceway, and inner ring raceway lubrication effect is bad, easily causes raceway early fatigue to peel off.
NU type cylindrical roller bearing inner ring is without rib, the two ribs in outer ring, and under 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 inner ring cracking phenomena in using process; The 2nd, inner ring and axle interference fit, because inner ring is without rib, dismantle cumbersome.
Summary of the invention
The purpose of this utility model 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, be a kind of under high speed, severe duty, adopt the contactless reinforced NU type roller bearing of inner ring single block border of oil jet lubrication.
The utility model 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, bearing outer ring both sides are provided with rib, distance between the rib of described both sides and cylindrical roller length match, it is characterized in that: described bearing inner race one side is provided with one-sided rib, between the one-sided rib of described bearing inner race and cylindrical roller, leave gap, 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 to dismantle from axle.
Structure of the present utility model and the two ribs in the identical ，Ji of NJ type cylindrical roller bearing (accompanying drawing 1) outer ring, inner ring single block border.Difference is that the one-sided rib of the utility model bearing inner race 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 work Shi， gap
δbe greater than the axial float limit of axle, so the utility model do not bear axial force, do not play axial limiting effect.
Working principle of the present utility model is: under oil jet lubrication condition, lubricant oil is not with rib one side to enter bearing (accompanying drawing 4) from the utility model bearing inner race, 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 beneficial effects of the utility model are: the utility model structural principle 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.
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 the utility model NU type roller bearing structural representation.
Fig. 5 is the mounting structure schematic diagram of inner ring of the present utility model 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 utility model roller bearing, comprise bearing outer ring 7, bearing inner race 6 and cylindrical roller 4, bearing outer ring both sides are provided with rib, and the distance between the rib of both sides and cylindrical roller 4 length match.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，Gai 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 utility model 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 utility model, for the floating end of axle, does not bear axial force in order to realize the utility model, does not play axial limiting effect, and in the time of will guaranteeing bearing normal operation, roller and rib are gapped
δ, and gap
δbe greater than the maximum axial shifting amount of axle, so that the utility model 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 work Shi， 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, adjust.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 oil jet lubrication condition, lubricant oil is not with rib one side to enter bearing from the utility model bearing inner race, the same with NU type cylindrical roller bearing, high lubricating effect; In addition, in order to adapt to severe duty, the utility model bearing inner race one side 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, bearing outer ring both sides are provided with rib, distance between the rib of described both sides and cylindrical roller length match, it is characterized in that: described bearing inner race one side is provided with one-sided rib, between the one-sided rib of described bearing inner race and cylindrical roller, leave gap, 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 a kind of inner ring single block border roller bearing described in claim 1, 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 to dismantle from axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485662.3U CN203395004U (en) | 2013-08-09 | 2013-08-09 | Non-contact NU-type cylindrical roller bearing with single rib on inner ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320485662.3U CN203395004U (en) | 2013-08-09 | 2013-08-09 | Non-contact NU-type cylindrical roller bearing with single rib on inner ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203395004U true CN203395004U (en) | 2014-01-15 |
Family
ID=49906539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320485662.3U Expired - Fee Related CN203395004U (en) | 2013-08-09 | 2013-08-09 | Non-contact NU-type cylindrical roller bearing with single rib on inner ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203395004U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438092A (en) * | 2013-08-09 | 2013-12-11 | 上海特安一凯轴承有限公司 | Inner ring single blocking edge non-contact NU type cylindrical roller bearing |
-
2013
- 2013-08-09 CN CN201320485662.3U patent/CN203395004U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438092A (en) * | 2013-08-09 | 2013-12-11 | 上海特安一凯轴承有限公司 | Inner ring single blocking edge non-contact NU type cylindrical roller bearing |
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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: 20140115 Termination date: 20210809 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |