WO1999031397A1 - Angular contact bearing unit with one piece inner bearing element - Google Patents

Angular contact bearing unit with one piece inner bearing element

Info

Publication number
WO1999031397A1
WO1999031397A1 PCT/NL1997/000705 NL9700705W WO9931397A1 WO 1999031397 A1 WO1999031397 A1 WO 1999031397A1 NL 9700705 W NL9700705 W NL 9700705W WO 9931397 A1 WO9931397 A1 WO 9931397A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing unit
unit according
bearing
outer ring
ring pieces
Prior art date
Application number
PCT/NL1997/000705
Other languages
French (fr)
Inventor
Hendrikus Jan Kapaan
Johannes Franciscus Van De Sanden
Original Assignee
Skf Engineering & Research Centre B.V.
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 Engineering & Research Centre B.V. filed Critical Skf Engineering & Research Centre B.V.
Priority to PCT/NL1997/000705 priority Critical patent/WO1999031397A1/en
Priority to AU53482/98A priority patent/AU5348298A/en
Priority to PCT/NL1998/000705 priority patent/WO1999031398A1/en
Priority to AU14466/99A priority patent/AU1446699A/en
Priority to JP2000539270A priority patent/JP2002508485A/en
Priority to KR1020007006670A priority patent/KR20010033245A/en
Priority to EP98958408A priority patent/EP1038113A1/en
Publication of WO1999031397A1 publication Critical patent/WO1999031397A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/001—Hubs with 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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/49—Bearings with both balls and rollers
    • F16C19/492—Bearings with both balls and rollers with two or more rows with angular contact
    • F16C19/495—Bearings with both balls and rollers with two or more rows with angular contact with two rows
    • F16C19/497—Bearings with both balls and rollers with two or more rows with angular contact with two rows in O-arrangement
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact 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
    • F16C19/22—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
    • 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
    • F16C19/386—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 in O-arrangement
    • 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
    • F16C19/49—Bearings with both balls and 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/10—Force connections, e.g. clamping
    • F16C2226/16—Force connections, e.g. clamping by wedge action, e.g. by tapered or conical parts
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30—Material joints
    • F16C2226/36—Material joints by welding
    • 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
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
    • F16C2240/70—Diameters; Radii
    • F16C2240/80—Pitch circle diameters [PCD]
    • F16C2240/82—Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD
    • F16C2240/84—Degree of filling, i.e. sum of diameters of rolling elements in relation to PCD with full complement of balls or rollers, i.e. sum of clearances less than diameter of one rolling element
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • 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
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
    • F16H2048/423—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon characterised by bearing arrangement

Definitions

  • the invention is related to a double row angular contact rolling element bearing unit comprising an inner bearing element and an outer bearing element having two pairs of opposite races, as well as two rows of rolling elements which are in rolling contact each with a pair of races, said inner bearing element comprising a single inner bearing piece which carries two raceways of equal or different diameters, and said outer bearing element comprising two outer ring pieces each carrying at least one raceway
  • bearing units which are known from US-A-1909525 are widely used in several fields, such as e g automotive applications
  • a bearing unit as used in automotive applications is known from DE-A- 4412307
  • the known bearing units of this type have an outer ring consisting of one piece, and a split inner ring consisting of two inner ring halves, which may or may not be mutually connected
  • This layout of the bearing unit with a split inner ring has several disadvantages
  • a major disadvantage of said bearings is related to the bearing clearance For each individual inner ring, the proper width has to be obtained by grinding such that required tolerance is achieved
  • Another disadvantage concerns the mounting and dismounting from a shaft As a result of fretting corrosion between the inner rings and shaft under loading conditions, the inner ring halves are difficult to dismount, involving the risk that the connection between these components breaks and the innermost ring stays behind
  • the bearing preload or axial preload can be controlled judiciously by axial ly adjusting the connecting means.
  • the inner bearing element now consists of a single inner bearing piece, such as a single ring piece, it is also strong enough to withstand all loadings to which it is subjected, for instance the loadings as occur during removal from a shaft of the bearing in question. Also, an oil injection process can be considered for dismounting the inner ring piece from the shaft. By virtue of this concept small ball /roller guidance in the inner ring piece is no longer required, which allows for optimal manufacturing, e.g. cold forming techniques.
  • the bearing unit according to the invention can be designed in many ways.
  • the raceways may be manufactured directly in the inner ring piece and the outer ring pieces.
  • raceway surface modification e.g. by means of laser cladding or coating are feasible.
  • induction hardening or through hardening are possible.
  • the outer ring pieces each carry a separate outer bearing ring provided with a raceway, which outer bearing rings are resting at axial abutments of the outer ring pieces, said abutments facing away from each other.
  • different kinds of metallic or non-metallic materials can be used for the inner ring piece and outer ring pieces and the bearing rings including raceways, such as respectively low carbon steel and high carbon steel, cast iron with or without a laser cladded bearing raceway, components made using powder metallizing processes, aluminium for the connecting ring halves.
  • the outer ring pieces can be connected to each other in many different ways.
  • the outer ring pieces at their facing sides may rest against an interposed ring shaped connecting element.
  • the ring shaped connecting element comprises two connecting element halves which are mutually connected at their facing ends, such ring shaped element can be applied in a way
  • the ring shaped connecting element in a radial cross-section can be tapered at least at one side, and the outer ring pieces may have a corresponding shape, such that on radial inward compression of the connecting element halves, the outer ring pieces are moved axially providing the required bearing clearance or preload
  • the two connecting element halves may be mutually connected in other ways as well , eg by means of bolts, an additional clamping ring, or welding
  • the bearing unit according to the invention has some further advantages, which are related to its adaptability for integrated or additional functions so as to form many different embodiments
  • At least one of the outer ring pieces may have an outwardly extending mounting flange
  • at least one of the outer ring pieces may be used as a drive means or act as a support for e g a brake disc, or carry a brake disc or brake drum
  • the brake disc or brake drum is connected to a centring piece which is mounted on one of the ring pieces by means of a close tolerance fit
  • a centring piece which is mounted on one of the ring pieces by means of a close tolerance fit
  • sensors can be integrated in the bearing unit for controlling and monitoring purposes e g rotational speed, pressure, temperature, position etc
  • centring pieces may be applied to a standard ring piece, and different materials may be applied for such components
  • the other ring piece carries means for mounting a wheel thereto, which other ring piece and the centring piece engage each other by means of splines
  • the inner bearing element may have stepped bore diameters Such embodiment is in particular suitable for supporting a pinion gear
  • the inner ring piece may have radially outwardly extending flanges for support of the rolling elements in an "0"-type contact bearing
  • at least one row of rolling elements may comprise balls
  • at least one row of rolling elements may comprise rollers
  • the outer ring pieces can be connected in different ways, e g by welding such as laser welding Furthermore, the outer ring pieces and/or the connecting element can also be connected by means of glueing
  • the inner bearing element may be either constituted by a single inner ring piece, or by a shaft
  • Figure 1 shows a double row angular contact rolling element bearing unit according to the invention
  • FIG. 2 shows a truck wheel hub unit which incorporates the bearing according to the invention
  • Figure 3 shows a second embodiment of a truck wheel hub unit
  • Figure 4 shows a third embodiment of a truck wheel hub unit
  • Figure 5 shows a pinion gear bearing unit incorporating a bearing unit according to the invention
  • Figure 6 shows a gear bearing transmission unit
  • Figure 7 shows a further variant of the bearing according of the invention
  • Figure 8 shows a train wheel bearing unit
  • Figures 12 show an embodiment incorporating a shaft
  • the double row angular contact rolling element bearing unit shown in figure 1 comprises an inner ring 1 consisting of a single inner ring piece, and an outer ring 2
  • the outer ring 2 comprises two outer ring pieces 3, 4. which are mutually connected by the ring shaped connecting element 5
  • This ring shaped connecting element 5 consists of two connecting ring halves 6, 7, which at diametrically opposite locations are welded together, one of the welds 8 is shown in figure 1
  • Connecting ring halves 6 have tapered sides 9, 10, which rest against correspondingly tapered sides 11, 12 of the outer ring pieces
  • outer ring pieces 3, 4 are axially pressed away from each other, thus ensuring the required clearance or preload between the two pairs of rolling elements 13, 14.
  • the rolling elements 13, 14 in question are in rolling contact with the raceways 15, 16 of the one piece inner ring 1, and raceways 17, 18 of the outer ring pieces 3, 4.
  • connecting ring halves 6, 7 may be welded to the outer ring pieces 3, 4, e.g. by laser welding.
  • the bearing unit shown in figure 1 is greased and sealed for life by means of seals 19, 20 which are known per se.
  • the inner ring piece 1 has a screwthreaded bore 162, into which a pipe section 160 may be screwed via a hole 161 in connecting ring 5.
  • a pipe section 160 pressurized oil can be fed between the engaging faces of the inner ring piece one and a shaft (not shown), for ease of removing the bearing unit.
  • FIG. 2 shows a bearing unit according to the invention incorporated in a truck wheel hub unit.
  • an inner ring consisting of a single inner ring piece 1 has been applied as well.
  • the two outer bearing rings 23, 24 are contained in respective outer ring pieces 21, 22. These outer ring pieces 21, 22 are pressed axially outwardly by means of the connecting ring halves 6, 7, which together form connecting ring 5.
  • the outer bearing rings 23, 24 bear against the axial abutments 25, 27 formed on the outer ring pieces 21 respectively 22.
  • One of the outer ring pieces 21 carries an external flange 27 having wheel bolts 28 for connecting a wheel thereto.
  • the other outer ring piece 22 has a cylindrical outer surface 29, onto which centring piece 30 has been connected by means of a close tolerance fit.
  • the cylindrical outer surface 29 of the outer ring piece 22 merges into a similar cylindrical outer surface 31 of the connecting ring element 5, and possibly a corresponding surface on the other outer ring piece 21.
  • the centring piece 30 has an inner cylindrical surface 32 which allows a close tolerance fit with the opposing surfaces 30, 31.
  • the outer ring piece 21 has axially extending splines 33, which engage similar axially oriented splines 34 on the centring piece 30.
  • the centring piece 30 is connected to the outer ring piece 21 by means of bolts 35, screwed in screwthreaded holes 36 in said outer ring piece 21.
  • screwthreaded holes may be provided in centring piece 30, so as to mount the bolts 35 from the side of outer ring piece 21.
  • the centring piece 30 furthermore carries a brake disc 37 or brake drum.
  • the braking torque exerted by the brake pads on brake disc 37 are transferred via the splines 33, 34 towards the wheel bolts 28 and finally to the wheel connected thereto, for effecting a braking action.
  • the centring piece 30 may furthermore carry an outer ridge 38, onto which the jaws of a calliper for removing the bearing from a shaft 39 can be applied.
  • the hub unit in particular in the inner ring 1 thereof, is secured onto the shaft 39 by means of a nut 40, which engages the screwthreaded end 41 of the shaft 39.
  • raceways are formed on outer bearing rings 23, 24, the raceways may alternatively also be formed directly in the outer ring piece 21, 22.
  • Said outer ring pieces 21, 22 may consist of cast iron.
  • the embodiment of figure 3 comprises to a large extent the same components as the embodiment of figure 2.
  • this embodiment is related to a truck hub unit, the outer ring piece 42 of which carries an outer flange 27 with wheel bolts 28, and the other outer ring piece 43 of which carries an outer flange 46, e.g. for connecting a brake drum or brake disc 37 thereto.
  • the outer ring piece 48 carries an external flange 49, having holes 54 connecting an element thereto, e.g. a brake disc 163 or brake drum, and a flange 164 for connecting a wheel. Also a counter ring 170 for a sensor, e.g. an ABS-sensor, may be provided.
  • the embodiment shown in figure 5 consists of a bearing unit having a single piece inner ring 51 having stepped portions 52, 53
  • the outer ring 54 is constituted by two outer ring pieces 55, 56, mutually connected by connecting ring element 57 comprising two halves as according to the preceding embodiments
  • rollers 58 are of a bigger size than the rollers 58, which makes this bearing particularly suitable for taking up the drive torque of a pinion bearing unit Rollers 58 are contained in a cage 101
  • the inner ring 51 is clamped between the abutment 63 of the shaft 60, and the nut 62 which co-operates with the screwthreaded portion 64 of the shaft 60
  • Figure 6 shows a further embodiment which is suitable for a bearing transmission unit
  • the inner ring 51 cooperates with two outer rings 102, 103 which are also rotatable with respect to each other
  • a bearing 104 having balls or rollers 105 separated by a cage 106, co-operates with raceways 107, 108 of respectively the outer ring 102 and a thrust bearing ring 109
  • the thrust bearing ring 109 in turn engages connecting element 110, which by means of wedge-shaped surfaces 111 engages outer ring 103
  • the outer ring 103 includes an integrated gear 112
  • Outer ring 102 furthermore comprises a mounting flange 113
  • the inner bore of the inner ring 51 may comprise splines or a thread for connecting purposes Instead of balls 10, 8, rollers or needles may be used
  • Figure 7 shows an embodiment having an inner ring 81 consisting of one piece, and an outer ring 82 comprising a connecting means carried out as a sleeve 83 and outer bearing rings 84, 85
  • the rolling elements 86, 87 in question, held by means of cages 88. 89, are adjusted in axial direction away from each other by means of lips 90, 91
  • These lips 90, 91 have been pressed inwardly out of the sleeve 83, leaving a hole 92
  • the lips 90, 91 and holes 92 have been formed at regular intervals along the circumference of the sleeve 83 By controlling their formation, the required axial clearance or preload is obtained in the bearing unit
  • the inner bore of the inner ring 81 may comprise a screw or ball thread for engagement with a ball screw or roller screw of a linear motion transmission
  • FIG. 8 shows a railway wheel bearing unit 120 by means of which shaft 121 is rotatably supported in support 122 of a railway bogey
  • the inner ring 1 is mounted on stub 123 of the axle 121
  • cap 124 and bolts 125, and screwthreaded holes 126 in axle stub 123 the inner ring 1 is pressed onto the shoulder 127 of the axle 121, through rings 128, 129
  • rollers 13, 14 each engage an outer bearing ring 23, 24, which bearing rings are supported with respect to each other by means of connecting element 5
  • a bore 130 respectively 131 extends through connecting element 5 and inner ring 1 Through bore 130, an oil feed pipe may be connected to hole 131, for supplying oil under pressure in between the axle stub 123 and the inner ring 1 Thereby, the inner ring 1 can be dismounted easily
  • FIG 9 shows a double row angular contact bearing having a series of balls 65 and a series of tapered rollers 66
  • the single inner ring piece 67 of the bearing has corresponding raceways 68, 69
  • the opposite raceways 70, 71 have been formed in the outer ring pieces 72, 73, which are mutually connected by connecting ring element 74
  • Figure 10 shows an embodiment having an inner ring piece 1 and two outer bearing rings 23, 24, which engage each other by means of spherical rollers 141, 142
  • the rows of rollers 141, 142 are separated by means of cages 143
  • Figure 10A shows one pocket 144 of a plastic snap cage 143 This pocket 144 is enclosed between two prongs 145, 146, each provided with a cavity 147 for providing some resilience As a result of this resilience, the prongs 145, 146 can be slid sideways onto the rolling elements 141
  • the inner diameter of the cages 143 is greater than the outer diameter of the supports 148 which border the raceways of the rolling elements 141 142, such that a correct mounting of the cages 143 is ensured
  • figure 11 shows an inner ring piece and outer bearing rings having rolling elements 151 which are shaped according to a hollow curve
  • Figure 12 shows a bearing unit wherein the inner bearing piece is constituted by a solid shaft 160 eg for a pinion bearing unit Said shaft has two raceways 161, 162 directly manufactured in its outer surface
  • the outer ring of the bearing unit is constituted by outer ring pieces 3, 4, mutually connected by connecting ring halves 7 (only one is shown), welded together by means of a weld 8
  • a flange 163 and bevel gear 164 have been mounted respectively by means of a weld 165 and a key/spline connection 166 together with a bolt 167
  • the shaft may also be carried out with two flanges at its opposite ends, either integrally or with a separate mounting piece

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

A double row angular contact rolling element bearing unit comprises an inner bearing element (1) and an outer bearing element (2) having two pairs of opposite races, as well as two rows of rolling elements which are in rolling contact each with a pair of races. The inner bearing element (1) comprises a single inner bearing piece which carries two raceways (15, 16) of equal or different diameters, and the outer bearing element (2) comprises two outer ring pieces each carrying at least one raceway (17, 18), which two outer ring pieces (3, 4) are mutually connected. The outer ring pieces are mutually connected by connecting means (5) providing an axial adjustability of said outer ring pieces (3, 4).

Description

Angular contact bearing unit with one piece inner bearing element
The invention is related to a double row angular contact rolling element bearing unit comprising an inner bearing element and an outer bearing element having two pairs of opposite races, as well as two rows of rolling elements which are in rolling contact each with a pair of races, said inner bearing element comprising a single inner bearing piece which carries two raceways of equal or different diameters, and said outer bearing element comprising two outer ring pieces each carrying at least one raceway
Such bearing units, which are known from US-A-1909525 are widely used in several fields, such as e g automotive applications A bearing unit as used in automotive applications is known from DE-A- 4412307 The known bearing units of this type have an outer ring consisting of one piece, and a split inner ring consisting of two inner ring halves, which may or may not be mutually connected This layout of the bearing unit with a split inner ring has several disadvantages A major disadvantage of said bearings is related to the bearing clearance For each individual inner ring, the proper width has to be obtained by grinding such that required tolerance is achieved Another disadvantage concerns the mounting and dismounting from a shaft As a result of fretting corrosion between the inner rings and shaft under loading conditions, the inner ring halves are difficult to dismount, involving the risk that the connection between these components breaks and the innermost ring stays behind
At misaligned condition during assembly on the shaft, the connection can be damaged These disadvantages have been removed partly by the unit as known from US-A-1909525, which comprises a single inner bearing piece which carries two raceways, and the outer bearing element of which comprises two outer ring pieces each carrying one raceway, which two outer ring pieces are mutually connected However, said bearing unit is less suitable for e g automative applications It has the disadvantage that it is difficult to obtain the desired preload or axial clearance The object of the invention is to provide an angular contact bearing unit which does not have this problem. This object is obtained in that the outer ring pieces are supported with respect to each other by a connecting means providing an axial adjustability of said outer ring pieces.
Before connecting the outer ring pieces definitively, the bearing preload or axial preload can be controlled judiciously by axial ly adjusting the connecting means.
Furthermore, as the inner bearing element now consists of a single inner bearing piece, such as a single ring piece, it is also strong enough to withstand all loadings to which it is subjected, for instance the loadings as occur during removal from a shaft of the bearing in question. Also, an oil injection process can be considered for dismounting the inner ring piece from the shaft. By virtue of this concept small ball /roller guidance in the inner ring piece is no longer required, which allows for optimal manufacturing, e.g. cold forming techniques.
The bearing unit according to the invention can be designed in many ways. For instance, the raceways may be manufactured directly in the inner ring piece and the outer ring pieces. Also, raceway surface modification e.g. by means of laser cladding or coating are feasible. Furthermore, induction hardening or through hardening are possible.
According to a preferred embodiment, the outer ring pieces each carry a separate outer bearing ring provided with a raceway, which outer bearing rings are resting at axial abutments of the outer ring pieces, said abutments facing away from each other.
In this embodiment, different kinds of metallic or non-metallic materials can be used for the inner ring piece and outer ring pieces and the bearing rings including raceways, such as respectively low carbon steel and high carbon steel, cast iron with or without a laser cladded bearing raceway, components made using powder metallizing processes, aluminium for the connecting ring halves.
The outer ring pieces can be connected to each other in many different ways. According to a first possibility, the outer ring pieces at their facing sides may rest against an interposed ring shaped connecting element. In case the ring shaped connecting element comprises two connecting element halves which are mutually connected at their facing ends, such ring shaped element can be applied in a way In that respect, in a radial cross-section the ring shaped connecting element can be tapered at least at one side, and the outer ring pieces may have a corresponding shape, such that on radial inward compression of the connecting element halves, the outer ring pieces are moved axially providing the required bearing clearance or preload The two connecting element halves may be mutually connected in other ways as well , eg by means of bolts, an additional clamping ring, or welding
The bearing unit according to the invention has some further advantages, which are related to its adaptability for integrated or additional functions so as to form many different embodiments
In this respect, at least one of the outer ring pieces may have an outwardly extending mounting flange Also, at least one of the outer ring pieces may be used as a drive means or act as a support for e g a brake disc, or carry a brake disc or brake drum
Preferably, the brake disc or brake drum is connected to a centring piece which is mounted on one of the ring pieces by means of a close tolerance fit This embodiment offers v ry flexible, customized designs for automotive, railway, linear movement actuators, and many other industrial applications for drive and support means with rotating inner ring and/or rotating outer ring pieces
Furthermore, sensors can be integrated in the bearing unit for controlling and monitoring purposes e g rotational speed, pressure, temperature, position etc Also, several different types of centring pieces may be applied to a standard ring piece, and different materials may be applied for such components
The other ring piece carries means for mounting a wheel thereto, which other ring piece and the centring piece engage each other by means of splines The connection by means of splines which e g may be oriented radially or axially, allows for a high torque transfer between the brake disc or brake drum and the wheel to be braked
In specific embodiments, the inner bearing element may have stepped bore diameters Such embodiment is in particular suitable for supporting a pinion gear
Furthermore, the inner ring piece may have radially outwardly extending flanges for support of the rolling elements in an "0"-type contact bearing Also, at least one row of rolling elements may comprise balls, and at least one row of rolling elements may comprise rollers A combined application of a row with rollers, and a row with balls, with or without cages, is also feasible Rows with rollers or balls of mutually different dimensions are possible as well
The outer ring pieces can be connected in different ways, e g by welding such as laser welding Furthermore, the outer ring pieces and/or the connecting element can also be connected by means of glueing The inner bearing element may be either constituted by a single inner ring piece, or by a shaft
The invention will further be explained with reference to the embodiments shown in the figures
Figure 1 shows a double row angular contact rolling element bearing unit according to the invention
Figure 2 shows a truck wheel hub unit which incorporates the bearing according to the invention
Figure 3 shows a second embodiment of a truck wheel hub unit
Figure 4 shows a third embodiment of a truck wheel hub unit Figure 5 shows a pinion gear bearing unit incorporating a bearing unit according to the invention
Figure 6 shows a gear bearing transmission unit
Figure 7 shows a further variant of the bearing according of the invention Figure 8 shows a train wheel bearing unit
Figures 9-11 show further embodiments of the bearing unit
Figures 12 show an embodiment incorporating a shaft
The double row angular contact rolling element bearing unit shown in figure 1 comprises an inner ring 1 consisting of a single inner ring piece, and an outer ring 2 The outer ring 2 comprises two outer ring pieces 3, 4. which are mutually connected by the ring shaped connecting element 5 This ring shaped connecting element 5 consists of two connecting ring halves 6, 7, which at diametrically opposite locations are welded together, one of the welds 8 is shown in figure 1
Connecting ring halves 6 have tapered sides 9, 10, which rest against correspondingly tapered sides 11, 12 of the outer ring pieces By pressing the outer connecting ring halves 6, 7 towards one another, outer ring pieces 3, 4 are axially pressed away from each other, thus ensuring the required clearance or preload between the two pairs of rolling elements 13, 14. The rolling elements 13, 14 in question are in rolling contact with the raceways 15, 16 of the one piece inner ring 1, and raceways 17, 18 of the outer ring pieces 3, 4.
Additionally, the connecting ring halves 6, 7 may be welded to the outer ring pieces 3, 4, e.g. by laser welding. The bearing unit shown in figure 1 is greased and sealed for life by means of seals 19, 20 which are known per se.
The inner ring piece 1 has a screwthreaded bore 162, into which a pipe section 160 may be screwed via a hole 161 in connecting ring 5. Through pipe section 160 pressurized oil can be fed between the engaging faces of the inner ring piece one and a shaft (not shown), for ease of removing the bearing unit.
The embodiment of figure 2 shows a bearing unit according to the invention incorporated in a truck wheel hub unit. In this truck wheel hub unit, an inner ring consisting of a single inner ring piece 1 has been applied as well. The two outer bearing rings 23, 24 are contained in respective outer ring pieces 21, 22. These outer ring pieces 21, 22 are pressed axially outwardly by means of the connecting ring halves 6, 7, which together form connecting ring 5. The outer bearing rings 23, 24 bear against the axial abutments 25, 27 formed on the outer ring pieces 21 respectively 22.
One of the outer ring pieces 21 carries an external flange 27 having wheel bolts 28 for connecting a wheel thereto.
The other outer ring piece 22 has a cylindrical outer surface 29, onto which centring piece 30 has been connected by means of a close tolerance fit. The cylindrical outer surface 29 of the outer ring piece 22 merges into a similar cylindrical outer surface 31 of the connecting ring element 5, and possibly a corresponding surface on the other outer ring piece 21.
The centring piece 30 has an inner cylindrical surface 32 which allows a close tolerance fit with the opposing surfaces 30, 31.
The outer ring piece 21 has axially extending splines 33, which engage similar axially oriented splines 34 on the centring piece 30. The centring piece 30 is connected to the outer ring piece 21 by means of bolts 35, screwed in screwthreaded holes 36 in said outer ring piece 21. In the alternative, screwthreaded holes may be provided in centring piece 30, so as to mount the bolts 35 from the side of outer ring piece 21.
The centring piece 30 furthermore carries a brake disc 37 or brake drum. The braking torque exerted by the brake pads on brake disc 37 are transferred via the splines 33, 34 towards the wheel bolts 28 and finally to the wheel connected thereto, for effecting a braking action.
The centring piece 30 may furthermore carry an outer ridge 38, onto which the jaws of a calliper for removing the bearing from a shaft 39 can be applied.
The hub unit, in particular in the inner ring 1 thereof, is secured onto the shaft 39 by means of a nut 40, which engages the screwthreaded end 41 of the shaft 39.
Although in figure 2 the raceways are formed on outer bearing rings 23, 24, the raceways may alternatively also be formed directly in the outer ring piece 21, 22. Said outer ring pieces 21, 22 may consist of cast iron. By means of a laser cladding process, the desired quality for the raceways may be obtained.
The embodiment of figure 3 comprises to a large extent the same components as the embodiment of figure 2. However, this embodiment is related to a truck hub unit, the outer ring piece 42 of which carries an outer flange 27 with wheel bolts 28, and the other outer ring piece 43 of which carries an outer flange 46, e.g. for connecting a brake drum or brake disc 37 thereto.
The connection between such brake drum or brake disc and the wheel connected to the wheel bolts 28 is now by way of the outer ring pieces 43 and the connecting ring element 5, which is welded by means of e.g. laser welds 47.
The embodiment shown in figure 4 again to a considerable extent corresponds to the embodiments of figures 2 and 3.
The outer ring piece 48 carries an external flange 49, having holes 54 connecting an element thereto, e.g. a brake disc 163 or brake drum, and a flange 164 for connecting a wheel. Also a counter ring 170 for a sensor, e.g. an ABS-sensor, may be provided. The embodiment shown in figure 5 consists of a bearing unit having a single piece inner ring 51 having stepped portions 52, 53 The outer ring 54 is constituted by two outer ring pieces 55, 56, mutually connected by connecting ring element 57 comprising two halves as according to the preceding embodiments
The inner ring 51 and the outer ring 54 are mutually supported by two rows of rollers 58, 59 The rollers 59 are of a bigger size than the rollers 58, which makes this bearing particularly suitable for taking up the drive torque of a pinion bearing unit Rollers 58 are contained in a cage 101
The inner ring 51 is clamped between the abutment 63 of the shaft 60, and the nut 62 which co-operates with the screwthreaded portion 64 of the shaft 60
Figure 6 shows a further embodiment which is suitable for a bearing transmission unit By means of full complement rollers 59 and rollers 58 which are separated by cage 101, the inner ring 51 cooperates with two outer rings 102, 103 which are also rotatable with respect to each other To that end, a bearing 104, having balls or rollers 105 separated by a cage 106, co-operates with raceways 107, 108 of respectively the outer ring 102 and a thrust bearing ring 109 The thrust bearing ring 109 in turn engages connecting element 110, which by means of wedge-shaped surfaces 111 engages outer ring 103
The outer ring 103 includes an integrated gear 112 Outer ring 102 furthermore comprises a mounting flange 113
The inner bore of the inner ring 51 may comprise splines or a thread for connecting purposes Instead of balls 10, 8, rollers or needles may be used
Figure 7 shows an embodiment having an inner ring 81 consisting of one piece, and an outer ring 82 comprising a connecting means carried out as a sleeve 83 and outer bearing rings 84, 85 The rolling elements 86, 87 in question, held by means of cages 88. 89, are adjusted in axial direction away from each other by means of lips 90, 91 These lips 90, 91 have been pressed inwardly out of the sleeve 83, leaving a hole 92
The lips 90, 91 and holes 92 have been formed at regular intervals along the circumference of the sleeve 83 By controlling their formation, the required axial clearance or preload is obtained in the bearing unit
By means of seals 19, 20, the bearing is sealed The inner bore of the inner ring 81 may comprise a screw or ball thread for engagement with a ball screw or roller screw of a linear motion transmission
The embodiment of figure 8 shows a railway wheel bearing unit 120 by means of which shaft 121 is rotatably supported in support 122 of a railway bogey The inner ring 1 is mounted on stub 123 of the axle 121 By means of cap 124 and bolts 125, and screwthreaded holes 126 in axle stub 123, the inner ring 1 is pressed onto the shoulder 127 of the axle 121, through rings 128, 129
The rollers 13, 14 each engage an outer bearing ring 23, 24, which bearing rings are supported with respect to each other by means of connecting element 5
A bore 130 respectively 131 extends through connecting element 5 and inner ring 1 Through bore 130, an oil feed pipe may be connected to hole 131, for supplying oil under pressure in between the axle stub 123 and the inner ring 1 Thereby, the inner ring 1 can be dismounted easily
The embodiment of figure 9 shows a double row angular contact bearing having a series of balls 65 and a series of tapered rollers 66 The single inner ring piece 67 of the bearing has corresponding raceways 68, 69 The opposite raceways 70, 71 have been formed in the outer ring pieces 72, 73, which are mutually connected by connecting ring element 74
By means of cages 75, 76, the elements 65, 66 are held at the proper mutual distance
Figure 10 shows an embodiment having an inner ring piece 1 and two outer bearing rings 23, 24, which engage each other by means of spherical rollers 141, 142 The rows of rollers 141, 142 are separated by means of cages 143 Figure 10A shows one pocket 144 of a plastic snap cage 143 This pocket 144 is enclosed between two prongs 145, 146, each provided with a cavity 147 for providing some resilience As a result of this resilience, the prongs 145, 146 can be slid sideways onto the rolling elements 141 Moreover, the inner diameter of the cages 143 is greater than the outer diameter of the supports 148 which border the raceways of the rolling elements 141 142, such that a correct mounting of the cages 143 is ensured
The embodiment of figure 11 shows an inner ring piece and outer bearing rings having rolling elements 151 which are shaped according to a hollow curve
Figure 12 shows a bearing unit wherein the inner bearing piece is constituted by a solid shaft 160 eg for a pinion bearing unit Said shaft has two raceways 161, 162 directly manufactured in its outer surface The outer ring of the bearing unit is constituted by outer ring pieces 3, 4, mutually connected by connecting ring halves 7 (only one is shown), welded together by means of a weld 8
Onto the shaft 160, a flange 163 and bevel gear 164 have been mounted respectively by means of a weld 165 and a key/spline connection 166 together with a bolt 167 The shaft may also be carried out with two flanges at its opposite ends, either integrally or with a separate mounting piece

Claims

Claims
1 Double row angular contact rolling element bearing unit, comprising an inner bearing element (1, 51 160) and an outer bearing element (2, 54, 82) having two pairs of opposite raceways (15, 16, 17 18, 68-71), as well as two rows of rolling elements (13, 14, 58, 59, 65, 66) which are in rolling contact each with a pair of raceways (15, 16, 17, 18, 68-71), said inner bearing element comprising a single inner bearing piece (15, 51, 160) which carries two raceways of equal or different diameters, and said outer bearing element (2, 54, 82) comprising two outer ring pieces (3, 4, 23, 24, 55, 56, 72, 73, 84, 85) each carrying at least one raceway, characterized in that the outer ring pieces (3, 4, 23,24, 55. 56, 72 73, 84, 85) are supported with respect to each other by a connecting means (5) providing an axial adjustability of said outer ring pieces
2 Bearing unit according to claim 1, wherein the outer ring pieces (21, 22, 42, 43) each carry a separate outer bearing ring (23, 24) provided with a raceway, which outer bearing rings (23, 24) are resting against axial or radial (1) abutments (25, 26) of the outer ring pieces (21, 22, 42, 43), said abutments (25, 26) facing away from each other
3 Bearing unit according to claim 1 or 2, wherein the outer ring pieces (21, 22, 42, 43) at their facing sides rest against an interposed ring shaped connecting element (5)
4. Bearing unit according to claim 3, wherein the ring shaped connecting element (5) comprises at least two connecting element halves (6, 7) which are mutually connected at their facing ends
5 Bearing unit according to claim 3, wherein the ring shaped connecting element (5) comprises a ring with at least one slit
6 Bearing unit according to any of claim 1-5, wherein in a radial cross-section the ring shaped connecting element (5) is tapered at least at one side, and the outer ring pieces (21, 22, 42, 43) have a corresponding shape, such that on radial inward compression of the connecting element (5), the outer ring pieces (21, 22, 42 43) reduce the axial clearance between raceways and rolling elements
7 Bearing unit according to claim 4, 5 or 6, wherein the connecting element (5) is connected to the adjoining outer ring pieces (21, 2, 42, 43) by means of welding
8 Bearing unit according to claim 4, 5 or 6, wherein the connecting element (5) is connected to the adjoining outer ring pieces by means of glueing
9 Bearing unit according to claim 4, 5 or 6, wherein the connecting element (5) is connected to the adjoining outer ring pieces (21, 2, 42, 43) by means of a mechanical connecting means, e g a bolted connection, cold deformed connection ring, etc
10 Bearing unit according to any of the preceding claims, wherein at least one of the outer ring pieces (21, 42, 43, 48) has an outwardly extending mounting flange (27, 46, 49)
11 Bearing unit according to any of the preceding claims, wherein at least one of the outer ring pieces (22, 43) carries a brake disc (37) or brake drum
12 Bearing unit according to claim 11, wherein the brake disc (37) or brake drum is connected to a centring piece (30) which is mounted on one of the ring pieces (22) by means of a close tolerance
13 Bearing unit according to claim 12, wherein the other ring piece (21) carries means (27, 28) for mounting a wheel thereto, which other ring piece (21) and the centring piece (30) engage each other by means of splines (33, 34)
14 Bearing unit according to any of the preceding claims, wherein the inner bearing element (51) has stepped bore diameters (52, 53)
15 Bearing unit according to any of the preceding claims, wherein the inner ring piece comprises at least one hole for passing through a gas, or a liquid, or electrical/electronic wires
16 Bearing unit according to any of the preceding claims, wherein the inner bearing element has radially outwardly extending flanges for support of the rolling elements in an "0"-type contact bearing configuration
17. Bearing unit according to any of the preceding claims, wherein at least one row of rolling elements comprises balls (65).
18. Bearing unit according to any of the preceding claims, wherein at least one row of rolling elements comprises cylindrical rollers (13, 14, 66)
19. Bearing unit according to any of the preceding claims, wherein at least one row of rolling elements comprises spherically shaped rollers
20 Bearing unit according to any of the preceding claims, wherein at least one row of rolling elements comprises tapered rollers
21. Bearing unit according to any of the preceding claims, wherein the outer ring pieces (3, 4; 21, 22; 42, 43; 55, 56, 72, 73) and/or the connecting element (5) are connected by means of welding, e.g. laser welding.
22. Bearing unit according to any of claims 1-18, wherein the outer ring pieces and/or the connecting element are connected by means of glueing.
23. Bearing unit according to any of the preceding claims, wherein the rolling elements of at least one row are separated by means of a cage (75, 76; 88, 89; 143). 24 Bearing unit according to any of the preceding claims wherein the rolling elements of at least one row are arranged according to a full complement layout
25 Bearing unit according to any of the preceding claims wherein the single inner bearing piece is a ring piece (15, 51)
26 Bearing unit according to any of the claims 1-23, wherein the single inner bearing piece is a solid shaft (160)
27 Bearing unit according to any of the preceding claims comprising integrated sensors or associated components (e g counter ring) for performing controlling/monitoring functions, e g rotational speed or speed difference, pressure, temperature, position etc
28 Bearing unit according to any of the preceding claims, wherein the inner bearing element has an aperture for feeding gas or oil to its inner surface, or for passing electric wires
29 Bearing unit according to any of the preceding claims, wherein different components, such as rings and ring pieces, comprise different metals/non-metals
30 Truck wheel hub unit, comprising a bearing unit according to any of the preceding claims
31 Pinion bearing unit, comprising a bearing unit according to any of claims 1-29
32 Railway bearing unit, comprising a bearing unit according to any of claims 1-29
33 Transmission bearing unit comprising a bearing unit according to any of claims 1-29
34 Actuator bearing unit, comprising a bearing unit according to any of claims 1-29 Drill bit bearing unit, comprising a bearing unit according claims 1-29
PCT/NL1997/000705 1997-12-17 1997-12-17 Angular contact bearing unit with one piece inner bearing element WO1999031397A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/NL1997/000705 WO1999031397A1 (en) 1997-12-17 1997-12-17 Angular contact bearing unit with one piece inner bearing element
AU53482/98A AU5348298A (en) 1997-12-17 1997-12-17 Angular contact bearing unit with one piece inner bearing element
PCT/NL1998/000705 WO1999031398A1 (en) 1997-12-17 1998-12-08 Angular contact bearing unit with one piece inner bearing element
AU14466/99A AU1446699A (en) 1997-12-17 1998-12-08 Angular contact bearing unit with one piece inner bearing element
JP2000539270A JP2002508485A (en) 1997-12-17 1998-12-08 Angular contact bearing unit with a single inner bearing element
KR1020007006670A KR20010033245A (en) 1997-12-17 1998-12-08 Angular contact bearing unit with one piece inner bearing element
EP98958408A EP1038113A1 (en) 1997-12-17 1998-12-08 Angular contact bearing unit with one piece inner bearing element

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PCT/NL1997/000705 WO1999031397A1 (en) 1997-12-17 1997-12-17 Angular contact bearing unit with one piece inner bearing element

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WO1999031397A1 true WO1999031397A1 (en) 1999-06-24

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PCT/NL1998/000705 WO1999031398A1 (en) 1997-12-17 1998-12-08 Angular contact bearing unit with one piece inner bearing element

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JP (1) JP2002508485A (en)
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US7413261B2 (en) 2002-02-20 2008-08-19 Meritor Heavy Vehicle Systems Cameri Spa Wheel hub assembly
US8382213B2 (en) 2002-02-20 2013-02-26 Meritor Heavy Vehicle Systems Cameri Spa Wheel hub assembly
WO2005110032A3 (en) * 2004-05-07 2006-02-02 Timken Co Locating bearing assembly for wind turbine gearbox shaft
WO2005110032A2 (en) * 2004-05-07 2005-11-24 The Timken Company Locating bearing assembly for wind turbine gearbox shaft
US7572061B2 (en) 2004-05-07 2009-08-11 The Timken Company Locating bearing assembly for wind turbine gearbox shaft
DE102006031029A1 (en) * 2006-07-05 2008-01-10 Schaeffler Kg Wheel bearing unit i.e. double-row tapered roller bearing, for e.g. motor vehicle wheel hub`s axial borehole, has outer and inner rings, and tapered roller bearings radially arranged between outer and inner rings related to each other
CN107636328A (en) * 2015-05-26 2018-01-26 舍弗勒技术股份两合公司 Two-row rolling bearing with adjustable ring for adjusting bearing play
CN108916239A (en) * 2017-01-06 2018-11-30 宁波高新区起兴机电有限公司 A kind of novel self-lubricating washing machine high-speed motor bearing
CN108916239B (en) * 2017-01-06 2019-09-24 泉州台商投资区华林设计有限公司 A kind of novel self-lubricating washing machine high-speed motor bearing
CN107387549A (en) * 2017-08-22 2017-11-24 洛阳Lyc轴承有限公司 A kind of super-huge four-row tapered roller bearing clearance method of adjustment
CN110145538A (en) * 2019-06-27 2019-08-20 南通山口精工机电有限公司 A kind of full ball miniature bearing
CN110985552A (en) * 2019-12-26 2020-04-10 广州恩梯恩裕隆传动系统有限公司 Tool for eliminating pre-tightening force of angular contact shaft
CN116522521A (en) * 2023-03-24 2023-08-01 江苏翔能科技发展有限公司 Method for determining axial diameter growth speed difference in conical ring rolling
CN116522521B (en) * 2023-03-24 2024-03-22 江苏翔能科技发展有限公司 Method for determining axial diameter growth speed difference in conical ring rolling

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AU1446699A (en) 1999-07-05
AU5348298A (en) 1999-07-05
WO1999031398A1 (en) 1999-06-24
JP2002508485A (en) 2002-03-19
EP1038113A1 (en) 2000-09-27
KR20010033245A (en) 2001-04-25

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