EP4500039A1 - Zweireihiges wälzlager - Google Patents
Zweireihiges wälzlagerInfo
- Publication number
- EP4500039A1 EP4500039A1 EP23715741.7A EP23715741A EP4500039A1 EP 4500039 A1 EP4500039 A1 EP 4500039A1 EP 23715741 A EP23715741 A EP 23715741A EP 4500039 A1 EP4500039 A1 EP 4500039A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inner ring
- double
- rolling bearing
- bearing
- row rolling
- 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
Links
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
- F16C19/34—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 both radial and axial load
- F16C19/38—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 both radial and axial load with two or more rows of rollers
-
- 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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
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- 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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
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- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/37—Loose spacing bodies
- F16C33/374—Loose spacing bodies resilient
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
-
- 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
- F16C2229/00—Setting preload
Definitions
- the invention relates to a double-row rolling bearing that has a prestressed inner ring.
- a spherical roller bearing is disclosed in DE 10 2019 104 395 Al.
- the spherical roller bearing has an outer ring, an inner ring and, between the two bearing rings, two mutually inclined rows of roller bodies, which are guided in cages.
- the bearing has an axially divided outer ring, which is divided into two spaced apart bearing ring parts.
- it is installed in a housing and the bearing outer rings are braced relative to one another. So that a preload defined by the geometric boundary conditions is applied by the bearing installation. The preload influences the running properties and the service life.
- the object of the present invention is to demonstrate a further developed roller bearing that has improved running properties and an extended service life compared to the prior art.
- the double-row rolling bearing according to the invention has a divided inner ring, an outer ring, rolling elements and at least one cage.
- the inner ring has at least one inner ring raceway and the outer ring has at least one outer ring raceway.
- the rolling bodies which are designed as rolling body rollers, roll in two rows between the inner ring and the outer ring and are arranged at a distance from one another in the at least one cage.
- the bearing forms an X arrangement.
- the inner ring is divided into two annular inner ring parts and the two inner ring parts are prestressed against each other with a prestressing means arranged between them.
- a double-row roller bearing is to be preloaded, this has so far only been done via an external force, i.e. via an axial force that is exerted by the outer ring when the bearing is installed. This is because the bearing is pressed or shrunk onto the shaft during assembly and axial mobility of the inner ring is no longer possible.
- the outer ring can be tensioned as desired when mounted in a housing.
- the invention proposes to divide the inner ring into two annular inner ring parts and with a central prestressing element to bias against each other. In this case, contrary to the usual technical implementation, the inner ring must remain mobile after assembly. Surprisingly, it has been shown that this type of preload of the inner ring parts ensures a continuous preload of the rolling bearing, i.e. under a wide variety of operating conditions, and thus improves the running properties and service life.
- the applied prestress of the prestressing means on the two annular inner ring parts leads to a variable bearing clearance or a variable operating clearance.
- a constant preload can be generated within the bearing, which makes the load zone ideal and continuous even with temperature differences.
- the proposed bearing can compensate for short-term high loads and thus counteract overloading.
- cage refers to any type of cage design.
- the material from which the cage is made also does not limit the invention. It is also conceivable to design the cage in one or more parts.
- the invention is suitable for all rolling element rollers, i.e. roller-shaped rolling elements of any kind.
- the bearing is designed as a spherical roller bearing, since the preload of the inner ring is particularly effective here.
- the biasing element of the double-row rolling bearing is designed as a spring or several springs. All types of springs are conceivable here, for example disc springs or wave springs.
- the preload is not generated by a full-volume body, but by a spring.
- the preload element preferably has a preload F (axial) between 0.0001 and 0.15 * static load rating Cor of the rolling bearing. It has been found that this area is particularly suitable for use as a prestressing element between two inner ring halves.
- the preload element of the double-row rolling bearing has a preload F (axial) between 0.05 +/- 0.01* static load rating Cor of the rolling bearing on the inner ring parts.
- the axial forces can be directed via a shaft shoulder to the inner ring via the resilient element into the rollers to the outer ring or into the housing.
- the resilient element can be completely compressed, that is, come into direct contact "inner ring part-resilient element-inner ring part”.
- the cage is designed in several parts. This has the advantage that the two cage parts are movable relative to one another and that jamming is avoided when the rows of rolling elements are in different axial positions, caused by the possibility of movement of the two inner ring parts.
- the cage is preferably guided on the outer ring.
- the double-row rolling bearing can be mounted in a housing and have a shaft running through it. It is also conceivable to design the outer ring of the double-row rolling bearing in two parts in order to be able to assemble the bearing easily. In this case, the outer ring can be brought into a predetermined position via one or more fitting rings.
- FIG. 1 shows an exemplary embodiment of a double-row rolling bearing according to the invention in a sectional view
- Figure 2 shows a further exemplary embodiment of a double-row rolling bearing according to the invention in a sectional view
- Figure 3 shows a bearing arrangement in section with a double-row rolling bearing according to the embodiment from Figure 1.
- the double-row rolling bearing 1 shows an exemplary embodiment of a double-row rolling bearing 1 according to the invention with a rotation axis 2 in a sectional view.
- the double-row rolling bearing 1 has a divided inner ring 3, an outer ring 4, rolling bodies 5 and a cage 6, the divided inner ring 3 having an inner ring raceway 7 for each row of rolling bodies and the outer ring 4 having an outer ring raceway 8 and the rolling bodies 5, which are designed as rolling body rollers 9 are, between inner ring 3 and outer ring 4 are arranged so that they roll in the cage 6 and are spaced apart from one another.
- the bearing is designed in an X arrangement.
- the inner ring 4 is axially divided into several parts into two inner ring parts 10 and 11, the two inner ring parts 10 and 11 being prestressed against one another with a prestressing means arranged between them.
- the rolling body rollers 9 of the double-row rolling bearing are shaped as pendulum rollers.
- the biasing element is designed as a spring, although other elements are also conceivable.
- Figure 2 shows a further embodiment in a sectional view, the mobility of the two inner ring parts in the axial direction to one another being limited by a shoulder 13 on one of the inner ring parts, in this case on the inner ring part 11.
- the shoulder can also be provided on the other inner ring part 10 and have a different design.
- Figure 3 shows a bearing arrangement 19 in section with the proposed double-row rolling bearing in an exemplary embodiment following Figure 1.
- the double-row rolling bearing is traversed by a shaft 14 and the outer ring 4 is mounted in a housing 20.
- the outer ring of the double-row rolling bearing 1 is designed in two parts.
- the outer ring 4, consisting of two outer ring parts 17 and 18, can be fastened via a fastening element 16.
- One or more fitting rings 15 can be used to adjust the preload force.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022107676.8A DE102022107676A1 (de) | 2022-03-31 | 2022-03-31 | Zweireihiges Wälzlager |
| PCT/DE2023/100218 WO2023186212A1 (de) | 2022-03-31 | 2023-03-22 | Zweireihiges wälzlager |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4500039A1 true EP4500039A1 (de) | 2025-02-05 |
Family
ID=85979736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23715741.7A Pending EP4500039A1 (de) | 2022-03-31 | 2023-03-22 | Zweireihiges wälzlager |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250207630A1 (de) |
| EP (1) | EP4500039A1 (de) |
| CN (1) | CN118575006A (de) |
| DE (1) | DE102022107676A1 (de) |
| WO (1) | WO2023186212A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR936515A (fr) * | 1945-12-10 | 1948-07-22 | Skf Svenska Kullagerfab Ab | Coussinet à rouleaux |
| DE1769651U (de) | 1958-04-24 | 1958-07-03 | Skf Kugellagerfabriken Gmbh | Pendelrollenlager mit einstellbarer vorspannung, insbesondere zur lagerung von ruderschaeften. |
| DE1933903U (de) | 1965-12-14 | 1966-03-03 | Skf Kugellagerfabriken Gmbh | Spielfreies lager. |
| GB2073332B (en) * | 1980-03-31 | 1983-10-05 | Timken Co | Tapered roller bearings |
| DE3621381A1 (de) * | 1986-06-26 | 1988-01-28 | Skf Gmbh | Zweireihige waelzlagereinheit |
| FI114166B (fi) * | 1998-04-20 | 2004-08-31 | Metso Paper Inc | Laakerielin |
| US7918649B2 (en) * | 2003-11-18 | 2011-04-05 | Ntn Corporation | Double-row self-aligning roller bearing and device for supporting wind turbine generator main shaft |
| CN201368122Y (zh) | 2009-03-13 | 2009-12-23 | 洛阳轴研科技股份有限公司 | 一种立式辊磨机磨辊用双列圆锥滚子轴承 |
| DE102012222501B4 (de) * | 2012-12-07 | 2017-03-09 | Schaeffler Technologies AG & Co. KG | Lageranordnung, insbesondere für einen Schiffsantrieb |
| DE102014202147A1 (de) | 2014-02-06 | 2015-08-06 | Schaeffler Technologies AG & Co. KG | Mehrteiliger und nichtsegmentierter Bolzenkäfig mit Verbindungsmutter-System |
| AT521218A1 (de) | 2018-05-03 | 2019-11-15 | Primetals Technologies Austria GmbH | Stehlager |
| DE102018215843A1 (de) * | 2018-09-18 | 2020-03-19 | Aktiebolaget Skf | Pendelrollenlager |
| DE102019104395A1 (de) | 2019-02-21 | 2020-08-27 | Schaeffler Technologies AG & Co. KG | Pendelrollenlager und Verfahren zur Montage eines Pendelrollenlagers |
-
2022
- 2022-03-31 DE DE102022107676.8A patent/DE102022107676A1/de active Pending
-
2023
- 2023-03-22 CN CN202380017207.7A patent/CN118575006A/zh active Pending
- 2023-03-22 WO PCT/DE2023/100218 patent/WO2023186212A1/de not_active Ceased
- 2023-03-22 US US18/851,982 patent/US20250207630A1/en active Pending
- 2023-03-22 EP EP23715741.7A patent/EP4500039A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118575006A (zh) | 2024-08-30 |
| WO2023186212A1 (de) | 2023-10-05 |
| US20250207630A1 (en) | 2025-06-26 |
| DE102022107676A1 (de) | 2023-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20241031 |
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| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
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