GB2262785A - A four-row tapered roller bearing - Google Patents

A four-row tapered roller bearing Download PDF

Info

Publication number
GB2262785A
GB2262785A GB9226672A GB9226672A GB2262785A GB 2262785 A GB2262785 A GB 2262785A GB 9226672 A GB9226672 A GB 9226672A GB 9226672 A GB9226672 A GB 9226672A GB 2262785 A GB2262785 A GB 2262785A
Authority
GB
United Kingdom
Prior art keywords
bearing
radially outer
rings
radially
ring
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.)
Granted
Application number
GB9226672A
Other versions
GB9226672D0 (en
GB2262785B (en
Inventor
Lothar Meidl
Walter Kufner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF GmbH
Original Assignee
SKF GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SKF GmbH filed Critical SKF GmbH
Publication of GB9226672D0 publication Critical patent/GB9226672D0/en
Publication of GB2262785A publication Critical patent/GB2262785A/en
Application granted granted Critical
Publication of GB2262785B publication Critical patent/GB2262785B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • F16C19/383—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—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 with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/541—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing
    • F16C19/542—Systems consisting of juxtaposed rolling bearings including at least one angular contact bearing with two rolling bearings with angular contact
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6614—Retaining the grease in or near the bearing in recesses or cavities provided in retainers, races or rolling elements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

2262785 A FOUR-ROW TAPERED ROLLER BEARING This invention relates to a
four-row tapered roller bearing comprising two radially inner rings, each providing two radially inner raceway surfaces, and a plurality of radially outer rings which together provide four radially outer raceway surfaces.
GB-A-2 174 765 (The Torrington Company) discloses such a bearing in which the load lines of the two innermost and adjacent rows of roller diverge towards the bearing axis, and the load lines of each outer row of rollers and its adjacent row converge towards the bearing axis. In this bearing there are two outboard radially outer rings and a single inboard radially outer ring. Each ring is separated from an adjacent ring by an annular spacer.
In assembling such a bearing, the inner rings with the roller sets are provided as a unit. Disassembling such a unit cannot be achieved without damaging these components. If the end faces of the inner rings are ground, grinding dust is likely to penetrate between these components so shortening the useful life of the bearing. Consequently, to enable the desired operational clearance of the bearing to be achieved, only the end faces of the annular spacers are ground and that is carried out when separated from the rest of the bearing.
Thus the known bearing is composed of a relatively large number of components each requiring special machining. Furthermore, the accurately machined bearing rings and annular spacers can easily be mixed up during assembly of the bearing leading to a bearing with an incorrect operational clearance. (The operational clearance of a bearing can be positive, that is when in operation there is a residual clearance, or it can be negative, that is, there is a pre-load.) The subject of this invention is a four-row tapered roller bearing with a lower number of components and having a construction which precludes an incorrect operational clearance due to a mix up of the components.
In the present invention, the bearing has four radially outer rings, each providing one radially outer raceway surface, in which the two inboard radially outer rings abut each other, each outboard radially outer ring abuts the adjacent inboard radially outer ring, and the two radially inner rings abut each other.
Clearly, there are no annular spacers separating the rings from one another, so there is an overall reduction in the number of components.
In a particular bearing assembly procedure, the radially inner rings are finish-ground and are combined with roller sets to form units. To achieve the desired operational clearance of the bearing, the mutually facing end faces of the two inboard radially outer rings are ground. This can be done away from the ring and roller set unit so avoiding the unit from being damaged by grinding dust. Also, there is no possibility of these two radially outer rings being mixed up with the other bearing rings so ensuring that the desired operational clearance is achieved. Furthermore, a narrow tolerance of the width (or axail length) of the bearing, measured across the radially inner rings, can be maintained. This avoids the need for expensive assembly components, for example, screw-threaded rings and nuts, for axially locating the bearing so allowing the production of a bearing which is inexpensive to manufacture and which can be installed without difficulty.
The accompanying drawing is a part of a 1 z longitudinal section through a four-row tapered roller bearing which is suitable for use as a rolling bearing for roll stands, for example cold and hot strip mills.
The bearing comprises two radially inner rings 10 and 12, each providing two radially inner raceway surfaces, four radially outer rings 14, 16, 18 and 20, each providing one radially outer raceway surface, and four rows of tapered rollers 22, 24, 26 and 28. Each row 22 to 28 of rollers is retained and guided by a separate cage. The load lines of the inboard rows of rollers 24 and 26 diverge towards the bearing axis. The load lines of each outboard row of rollers 22, 28 and its adjacent row of rollers 24, 26 converge towards the bearing axis.
The two inboard radially outer rings 16 and 18 have axially extending annular projections 30 and 32 which abut each other. Each outboard radially outer ring 14, 20 has an axially extending annular projection 34, 36 which abuts an axially extending annular projection 38, 40 of the adjacent inboard radially outer ring 16, 18. Each of the projections 34 to 40 extends beyond the raceway surface and is stepped in from the outer circumferential surface of the respective radially outer ring 14, 16, 18, 20. The two radially inner rings 10 and 12 have axially extending annular projections 42 and 44 which abut each other.
Each inboard radially outer ring 16, 18 has a plurality of radially extending recesses 46, '48 which extend axially inwardly from the end face of the projection 38, 40 and are spaced circumferentially from one another. Each recess 46, 48 forms, with the projection 34, 36 of the other radially outer ring 14, 20, an aperture for ventilating and/or lubricating the bearing.
Each inboard radially outer ring 16, 18 has a conical face 50, 52 extending from its bore adjacent to the raceway surface and outwardly to the abutment face of the projection 30, 32 so forming an enlarged grease reservoir.
Each radially inner ring 10, 12 has at each end a tapered bore surface 54 which facilitates mounting, particularly for enclosed components. Each radially inner ring 10, 12 has on each end face a plurality of radially extending recesses 56 which form with adjacent components radially extending lubricating apertures. The cylindrical bore of each radially inner ring 10, 12 has a helically extending groove 58 for accommodating lubrication grease and wear particles.
The above bearing construction enables the axial width tolerance of the bearing measured across the radially inner rings 10 and 12 to be less than + 0.25mm. All the rings 10 to 20 of the bearing are replaceable, each according to its seating position so that, for example, the ring 14 can be replaced by another ring 14 in the same seating position. However, the ring 20 cannot be replaced by a ring 14.
1,

Claims (7)

1. A four row tapered roller bearing comprising:
two radially inner rings, each providing two radially inner raceway surfaces; and a plurality of radially outer rings which together provide four radially outer raceway surfaces; wherein there are four radially outer rings, each providing one radially outer raceway surface, in which the two inboard radially outer rings abut each other, each outboard radially outer ring abuts the adjacent inboard radially outer ring, and the two radially inner rings abut each other.
2. A bearing as claimed in Claim 1, wherein each radially inner ring has an annular projection extending towards and abutting that of the adjacent radially inner ring, and each outboard radially outer ring and adjacent inboard radially outer ring has an annular projection extending to and abutting that of the adjacent radially outer ring
3. A bearing as claimed in Claim I or 2, wherein each inboard radially outer ring has a conical face extending from its bore outwardly to the abutment face.
4. A bearing as claimed in Claim 1, 2 or 3, wherein each radially inner ring has at each end a tapered bore surface.
5. A bearing as claimed in any preceding claim, wherein all the rings of the bearing are replaceable, each according to its position.
6. A bearing as claimed in any preceding claim, wherein the axial width tolerance of the bearing, measured across the radially inner rings, is less than + 0.25 mm.
7. A four-row tapered roller bearing substantially as herein described with reference to and as shown in the accompanying drawings.
GB9226672A 1991-12-23 1992-12-22 A four-row tapered roller bearing Expired - Fee Related GB2262785B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4142802A DE4142802A1 (en) 1991-12-23 1991-12-23 FOUR ROW BEARING BEARING

Publications (3)

Publication Number Publication Date
GB9226672D0 GB9226672D0 (en) 1993-02-17
GB2262785A true GB2262785A (en) 1993-06-30
GB2262785B GB2262785B (en) 1995-06-21

Family

ID=6448039

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9226672A Expired - Fee Related GB2262785B (en) 1991-12-23 1992-12-22 A four-row tapered roller bearing

Country Status (5)

Country Link
JP (1) JP3025594B2 (en)
CN (1) CN1038869C (en)
DE (1) DE4142802A1 (en)
FR (1) FR2685410B1 (en)
GB (1) GB2262785B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697533A1 (en) * 1994-08-18 1996-02-21 The Timken Company Compact bearing and stiffened journal
GB2323132A (en) * 1997-03-11 1998-09-16 Skf Gmbh Four-row taper roller bearing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022205A1 (en) 2005-05-13 2006-11-16 Schaeffler Kg Four row tapered roller bearing
CN101779049B (en) * 2007-08-09 2014-02-05 株式会社捷太格特 Roller bearing
CN102829076A (en) * 2011-06-14 2012-12-19 瓦房店正达冶金轧机轴承有限公司 Sealed four-row cylinder bearing
DE102012203803A1 (en) * 2012-03-12 2013-09-12 Schaeffler Technologies AG & Co. KG Rolling bearing with split bearing ring unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB724535A (en) * 1953-01-02 1955-02-23 British Timken Ltd Improvements relating to roller bearings
US3958847A (en) * 1975-01-31 1976-05-25 Tribotech Bearing assembly

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH56202A (en) * 1912-06-01 1912-10-16 Weibel Mulisch Margareta Ball bearings for radial and axial pressure
US1144484A (en) * 1915-02-19 1915-06-29 Hyatt Roller Bearing Co Roller-bearing with thrust-collar.
US1283713A (en) * 1916-07-27 1918-11-05 Skf Svenska Kullagerfab Ab Roller-bearing.
US1961134A (en) * 1932-09-06 1934-06-05 Timken Roller Bearing Co Antifriction bearing
US1971782A (en) * 1933-09-30 1934-08-28 Karl L Herrmann Roller bearing
CN85108036B (en) * 1985-05-06 1988-08-17 托林顿公司 Multirow roller bearing
DE3542265A1 (en) * 1985-11-29 1987-06-04 Skf Gmbh Support of a horizontal roll
DE3607729C3 (en) * 1986-03-08 1995-06-29 Skf Gmbh Rolling bearing, for work rolls in high-speed rolling mills
DE3622299A1 (en) * 1986-07-03 1988-01-07 Kugelfischer G Schaefer & Co Shaft bearing arrangement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB724535A (en) * 1953-01-02 1955-02-23 British Timken Ltd Improvements relating to roller bearings
US3958847A (en) * 1975-01-31 1976-05-25 Tribotech Bearing assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697533A1 (en) * 1994-08-18 1996-02-21 The Timken Company Compact bearing and stiffened journal
AU694245B2 (en) * 1994-08-18 1998-07-16 Timken Company, The Compact bearing and stiffened journal
GB2323132A (en) * 1997-03-11 1998-09-16 Skf Gmbh Four-row taper roller bearing
GB2323132B (en) * 1997-03-11 2000-10-18 Skf Gmbh Four-row taper roller bearing
US6227713B1 (en) 1997-03-11 2001-05-08 Skf Gmbh Tapered roller bearing for working rolls of roll strands

Also Published As

Publication number Publication date
CN1074983A (en) 1993-08-04
GB9226672D0 (en) 1993-02-17
GB2262785B (en) 1995-06-21
DE4142802A1 (en) 1993-07-01
JP3025594B2 (en) 2000-03-27
FR2685410B1 (en) 1996-08-02
CN1038869C (en) 1998-06-24
JPH05248430A (en) 1993-09-24
FR2685410A1 (en) 1993-06-25

Similar Documents

Publication Publication Date Title
US4699529A (en) Radial roller bearing
US6544140B2 (en) Pinion mounting with direct tapered roller bearing arrangement
US4783183A (en) Thrust bearing assembly
US5362159A (en) Bearing seal
US4440256A (en) Bearing and universal joint assembly
US5836700A (en) Split bearing seal
US4085984A (en) Double row bearing assembly with tapered roller bearings
CA2039048A1 (en) Bearing assembly for a shaft journal
EP0746698B1 (en) Thrust bearing assembly
GB2057594A (en) Roller bearing
JPH03317A (en) Rolling bearing
GB2226607A (en) Combined radial and thrust bearing
US6679634B2 (en) Low maintenance easily changeable bearing
US4615627A (en) Roller bearing assembly
GB2262785A (en) A four-row tapered roller bearing
WO2013028284A1 (en) Bearing cage for a roller bearing assembly
US6921210B2 (en) Flange bearing
US4023867A (en) Roller bearing for backup rollers in multi-roll mills
US4203634A (en) Seal and locking arrangement for a bearing assembly
CA2024195C (en) Hollow roller bearing and method of making and mounting same
US5040906A (en) Bearing with lubricating and non-lubricating spacer elements
US20020044708A1 (en) Cylindrical roller bearing
US5149208A (en) Bearing with lubricating and non-lubricating spacers
JP2000130444A (en) Double row rolling bearing unit
WO2002038428A1 (en) Stabilized seal wear ring

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20021222