WO2020014496A1 - Drawn cup cam roller bearing - Google Patents

Drawn cup cam roller bearing Download PDF

Info

Publication number
WO2020014496A1
WO2020014496A1 PCT/US2019/041425 US2019041425W WO2020014496A1 WO 2020014496 A1 WO2020014496 A1 WO 2020014496A1 US 2019041425 W US2019041425 W US 2019041425W WO 2020014496 A1 WO2020014496 A1 WO 2020014496A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
drawn cup
shaft
roller bearing
sidewall
Prior art date
Application number
PCT/US2019/041425
Other languages
French (fr)
Inventor
Stefan Knatz
Original Assignee
Koyo Bearings North America Llc
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 Koyo Bearings North America Llc filed Critical Koyo Bearings North America Llc
Publication of WO2020014496A1 publication Critical patent/WO2020014496A1/en

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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • 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
    • F16C33/588—Races of sheet metal
    • 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
    • F16C33/605—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings with a separate retaining member, e.g. flange, shoulder, guide ring, secured to a race ring, adjacent to the race surface, so as to abut the end of the rolling elements, e.g. rollers, or the cage
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
    • 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
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/06—Cam-followers
    • 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
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep 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
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring

Definitions

  • the present invention relates generally to roller bearings. More particularly, the present invention relates to designs and assembly methods of cam roller bearings with cups drawn from sheet metal.
  • One embodiment of the present disclosure provides a cam roller bearing including a shaft having a first end, a second end, a first cylindrical portion defining an inner raceway, and an annular shoulder extending radially outwardly from the first end of the shaft.
  • a drawn cup has a first end, a second end, a cylindrical sidewall extending therebetween, an inner surface of the sidewall defining an outer raceway, and a first radially-inwardly depending flange disposed on the first end of the drawn cup.
  • a plurality of rollers is disposed between the inner raceway and the outer raceway, and each roller is also disposed between the annular shoulder of the shaft and the first flange of the drawn cup.
  • the first flange extends radially-inwardly beyond a radially outermost portion of each roller, and the annular shoulder extends radially-outwardly beyond an innermost portion of each roller.
  • Figure 1 is a perspective view of a cam roller bearing in accordance with an embodiment of the present disclosure
  • Figure 2 is an exploded view of the cam roller bearing shown in Figure 1 ;
  • Figure 3 is a cross-sectional view of the cam roller bearing shown in Figure 1, taken along line 3-3;
  • Figure 4 is a partial cross-sectional view of the cam roller being shown in Figure
  • a cam roller bearing 10 in accordance with a preferred embodiment of the present invention includes an outer cup 20 disposed concentrically about a shaft 40, a plurality of rollers 50 disposed between outer cup 20 and shaft 40, and an annular washer 60 disposed between outer cup 20 and shaft 40 to both axially retain outer cup 20 on shaft 40 and seal an open end of outer cup 20.
  • outer cup 20 is formed by a drawing process, and includes a cylindrical sidewall 22 that extends from its first end 24 to its second end 26. The width of sidewall 22 can be selected dependent upon the application of the roller bearing.
  • Cylindrical sidewall 22 includes a first inner surface portion 28 that defines an inner roller raceway, a second inner surface portion 30, and an annular ledge 36 that extends therebetween. As shown, the first and second inner surface portions 28 and 30 are concentric about the longitudinal center axis of shaft 40, whereas annular ledge 36 is transverse to the longitudinal center axis of shaft 40. Additionally, outer cup 20 includes a radially inwardly depending annular lip 38 disposed at its first end 24 and a bottom wall 32 disposed at its second end 26. Annular lip 38 is used to axially retain outer cup 20 on shaft 40, whereas bottom wall 32 preferably creates a lubrication reservoir for the bearing. Preferably, bottom wall 32 of outer cup 20 includes a convex inner surface 34 to facilitate the reduction of friction between bottom wall 32 and the end face of shaft 40.
  • shaft 40 includes a cylindrical outer surface 44 that defines an outer roller raceway 44 and an annular shoulder 46 that extends radially outwardly from a distal end of shaft 40.
  • annular washer 60 includes an annular seal 64 and a stiffening rib 62 disposed therein. Annular washer 60 is secured adjacent annular ledge 36 of outer cup 20 by annular lip 38.
  • annular lip 38 is curled radially-inwardly so that annular washer 60 is axially retained between annular ledge 36 and annular lip 38.
  • a first end 52 of each roller 50 abuts annular washer 60
  • a second end 54 of each roller 50 abuts shoulder 46 of shaft 40, thereby axially retaining outer cup 20 on shaft 40.
  • thrust loading on outer cup 20 acts on annular washer 60 by way of annular lip 38.
  • annular seal 64 of annular washer 60 maybe omitted, depending upon the method of lubrication that is selected for cam roller bearing 10.
  • outer cup 20 maybe axially secured to annular washer 60 without the use of annular lip 38.
  • annular washer 60 maybe received adjacent annular ledge 36 by a press-fit, by staking, by utilizing corresponding threads formed on the outer cup and annular washer, etc.
  • vibration isolator may be constructed of any material found to be suitable for the intended purpose. It is intended that the present invention cover such modifications and variations as come within the scope and spirit of the appended claims and their equivalents.

Landscapes

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

Abstract

A cam roller bearing (10) including a shaft (40) having an inner raceway and an annular shoulder (46) extending radially outwardly from a first end (24, 26, 52, 54) of the shaft (40). A drawn cup has a cylindrical sidewall (22) defining an outer raceway, and a first radially- inwardly depending flange disposed on a first end (24, 26, 52, 54) of the drawn cup. A plurality of rollers (50) is disposed between the inner raceway and the outer raceway and each roller (50) is disposed between the annular shoulder (46) of the shaft (40) and the first flange of the drawn cup.

Description

NAME OF INVENTION
DRAWN CUP CAM ROUUER BEARING
CUAIM OF PRIORITY
[0001] This application claims priority to U.S. provisional patent application number
62/696,369 filed July 11, 2018, the disclosure of which is incorporated by reference herein.
FIEUD OF THE INVENTION
[0002] The present invention relates generally to roller bearings. More particularly, the present invention relates to designs and assembly methods of cam roller bearings with cups drawn from sheet metal.
BACKGROUND OF THE INVENTION
[0003] Many applications for cam roller bearings require high precision and, therefore, are costly to produce. For those applications where high precision is not required, it would be desirable to reduce the costs of manufacture.
[0004] The present invention recognizes and addresses considerations of prior art constructions and methods.
SUMMARY OF THE INVENTION
[0005] One embodiment of the present disclosure provides a cam roller bearing including a shaft having a first end, a second end, a first cylindrical portion defining an inner raceway, and an annular shoulder extending radially outwardly from the first end of the shaft. A drawn cup has a first end, a second end, a cylindrical sidewall extending therebetween, an inner surface of the sidewall defining an outer raceway, and a first radially-inwardly depending flange disposed on the first end of the drawn cup. A plurality of rollers is disposed between the inner raceway and the outer raceway, and each roller is also disposed between the annular shoulder of the shaft and the first flange of the drawn cup. The first flange extends radially-inwardly beyond a radially outermost portion of each roller, and the annular shoulder extends radially-outwardly beyond an innermost portion of each roller.
[0006] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one or more embodiments of the invention and, together with the description, serve to explain the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended drawings, in which;
[0008] Figure 1 is a perspective view of a cam roller bearing in accordance with an embodiment of the present disclosure;
[0009] Figure 2 is an exploded view of the cam roller bearing shown in Figure 1 ;
[0010] Figure 3 is a cross-sectional view of the cam roller bearing shown in Figure 1, taken along line 3-3; and
[0011] Figure 4 is a partial cross-sectional view of the cam roller being shown in Figure
1. [0012] Repeat use of reference characters in the present specification and drawings is intended to represent same or analogous features or elements of the invention according to the disclosure.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] Reference will now be made in detail to presently preferred embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided by way of explanation, not limitation, of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope and spirit thereof. For instance, features illustrated or described as part of one embodiment may be used on another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
[0014] Referring now to Figure 1, a cam roller bearing 10 in accordance with a preferred embodiment of the present invention includes an outer cup 20 disposed concentrically about a shaft 40, a plurality of rollers 50 disposed between outer cup 20 and shaft 40, and an annular washer 60 disposed between outer cup 20 and shaft 40 to both axially retain outer cup 20 on shaft 40 and seal an open end of outer cup 20. Preferably, outer cup 20 is formed by a drawing process, and includes a cylindrical sidewall 22 that extends from its first end 24 to its second end 26. The width of sidewall 22 can be selected dependent upon the application of the roller bearing. Cylindrical sidewall 22 includes a first inner surface portion 28 that defines an inner roller raceway, a second inner surface portion 30, and an annular ledge 36 that extends therebetween. As shown, the first and second inner surface portions 28 and 30 are concentric about the longitudinal center axis of shaft 40, whereas annular ledge 36 is transverse to the longitudinal center axis of shaft 40. Additionally, outer cup 20 includes a radially inwardly depending annular lip 38 disposed at its first end 24 and a bottom wall 32 disposed at its second end 26. Annular lip 38 is used to axially retain outer cup 20 on shaft 40, whereas bottom wall 32 preferably creates a lubrication reservoir for the bearing. Preferably, bottom wall 32 of outer cup 20 includes a convex inner surface 34 to facilitate the reduction of friction between bottom wall 32 and the end face of shaft 40.
[0015] As shown, shaft 40 includes a cylindrical outer surface 44 that defines an outer roller raceway 44 and an annular shoulder 46 that extends radially outwardly from a distal end of shaft 40. Note, although the disclosed embodiment is a full complement bearing assembly, in alternate embodiments a roller cage (not shown) may be utilized to maintain spacing between the rollers. Preferably, annular washer 60 includes an annular seal 64 and a stiffening rib 62 disposed therein. Annular washer 60 is secured adjacent annular ledge 36 of outer cup 20 by annular lip 38. Specifically, after annular washer 60 is positioned adjacent annular ledge 36, subsequently to rollers 50 being disposed between roller raceway 28 and 44, annular lip 38 is curled radially-inwardly so that annular washer 60 is axially retained between annular ledge 36 and annular lip 38. As shown in Figure 1, once assembled, a first end 52 of each roller 50 abuts annular washer 60, whereas a second end 54 of each roller 50 abuts shoulder 46 of shaft 40, thereby axially retaining outer cup 20 on shaft 40. As such, thrust loading on outer cup 20 acts on annular washer 60 by way of annular lip 38. Note, in alternate embodiments, annular seal 64 of annular washer 60 maybe omitted, depending upon the method of lubrication that is selected for cam roller bearing 10. As well, in another alternate embodiment, outer cup 20 maybe axially secured to annular washer 60 without the use of annular lip 38. For example, annular washer 60 maybe received adjacent annular ledge 36 by a press-fit, by staking, by utilizing corresponding threads formed on the outer cup and annular washer, etc.
[0016] While one or more preferred embodiments of the invention are described above, it should be appreciated by those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope and spirit thereof. Additionally, the vibration isolator may be constructed of any material found to be suitable for the intended purpose. It is intended that the present invention cover such modifications and variations as come within the scope and spirit of the appended claims and their equivalents.

Claims

CLAIMS What is claimed is:
1. A cam roller bearing comprising:
a shaft having a first end, a second end, a first cylindrical portion defining an inner raceway, and an annular shoulder extending radially outwardly from the first end of the shaft; a drawn cup having a first end, a second end, a cylindrical sidewall extending therebetween, an inner surface of the sidewall defining an outer raceway, and a first radially- inwardly depending flange disposed on the first end of the drawn cup; and
a plurality of rollers disposed between the inner raceway and the outer raceway, wherein each roller is disposed between the annular shoulder of the shaft and the first flange of the drawn cup, the first flange extends radially-inwardly beyond a radially outermost portion of each roller, and the annular shoulder extends radially-outwardly beyond an innermost portion of each roller.
2. The cam roller bearing of claim 1, further comprising an annular washer disposed between the outer raceway and the first flange of the drawn cup, wherein the annular washer is concentric about a longitudinal center axis of the shaft and an outer diameter of the annular washer is greater than an inner diameter of the first flange.
3. The cam roller bearing of claim 2, wherein a first end of each roller is disposed adjacent the annular shoulder of the shaft and a second end of each roller is adjacent the first flange of the drawn cup.
4. The cam roller bearing of claim 2, wherein the annular washer includes an annular stiffening rib and an annular seal affixed thereto, the annular seal having a first portion depending radially-inwardly so that it is in contact with the inner raceway of the shaft.
5. The cam roller bearing of claim 4, wherein the annular seal further comprises a second portion disposed between an outer perimeter of the annular stiffening rib and an inner surface of the sidewall of the drawn cup.
6. The cam roller bearing of claim 5, wherein the inner surface of the sidewall of the drawn cup includes a first portion defining a raceway for the plurality of rollers and a second portion, wherein the second portion of the annular seal abuts the second portion of the sidewall of the drawn cup and a diameter of the second portion of the sidewall is greater than a diameter of the first portion of the sidewall.
7. The cam roller bearing of claim 1, wherein drawn cup includes a bottom wall enclosing the second end of the drawn cup.
8. The cam roller bearing of claim 7, wherein an inner surface of the end wall of the drawn cup is a convex surface.
9. A cam roller bearing comprising:
a shaft having a first end, a second end, a first cylindrical portion defining an inner raceway, and an annular shoulder extending radially outwardly from the first end of the shaft; a drawn cup having a first end, a second end, a cylindrical sidewall extending
therebetween, and an inner surface of the sidewall defining an outer raceway;
an annular washer non-rotatably secured in the first end of the drawn cup; and a plurality of rollers disposed between the inner raceway and the outer raceway, wherein each roller is disposed between the annular shoulder of the shaft and the annular washer, the annular washer extends radially-inwardly beyond a radially outermost portion of each roller, and the annular shoulder extends radially-outwardly beyond an innermost portion of each roller.
10. The cam roller bearing of claim 9, wherein the annular washer is concentric about a longitudinal center axis of the shaft and the annular washer is press-fit in the drawn cup.
11. The cam roller bearing of claim 9, wherein a first end of each roller is disposed adjacent the annular shoulder of the shaft and a second end of each roller is adjacent the annular washer.
12. The cam roller bearing of claim 9, wherein the annular washer includes an annular stiffening rib and an annular seal affixed thereto, the annular seal having a first portion depending radially-inwardly so that it is in contact with the inner raceway of the shaft.
13. The cam roller bearing of claim 9, wherein the inner surface of the sidewall of the drawn cup includes a first portion defining a raceway for the plurality of rollers and a second portion, wherein the annular seal abuts the second portion of the sidewall of the drawn cup and a diameter of the second portion of the sidewall is greater than a diameter of the first portion of the sidewall.
14. The cam roller bearing of claim 9, wherein the drawn cup further comprises a first radially-inwardly depending flange disposed on the first end of the drawn cup, and the annular washer is disposed between the outer raceway and the first flange of the drawn cup.
PCT/US2019/041425 2018-07-11 2019-07-11 Drawn cup cam roller bearing WO2020014496A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862696369P 2018-07-11 2018-07-11
US62/696,369 2018-07-11

Publications (1)

Publication Number Publication Date
WO2020014496A1 true WO2020014496A1 (en) 2020-01-16

Family

ID=67515116

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/041425 WO2020014496A1 (en) 2018-07-11 2019-07-11 Drawn cup cam roller bearing

Country Status (1)

Country Link
WO (1) WO2020014496A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063787A (en) * 1934-09-24 1936-12-08 Torrington Co Antifriction bearing and method of making the same
DE966513C (en) * 1942-03-05 1957-08-14 Eugen Didillon Radial and axial roller bearings combined into one structural unit
GB1096237A (en) * 1966-02-22 1967-12-20 Ina Needle Bearings Ltd Improvements in or relating to cam follower assemblies
FR2231261A5 (en) * 1973-05-25 1974-12-20 Pitner Alfred
DE19636508A1 (en) * 1996-09-09 1998-03-12 Teves Gmbh Alfred Radial piston pump with one-sided closed bearing shell of the radial bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063787A (en) * 1934-09-24 1936-12-08 Torrington Co Antifriction bearing and method of making the same
DE966513C (en) * 1942-03-05 1957-08-14 Eugen Didillon Radial and axial roller bearings combined into one structural unit
GB1096237A (en) * 1966-02-22 1967-12-20 Ina Needle Bearings Ltd Improvements in or relating to cam follower assemblies
FR2231261A5 (en) * 1973-05-25 1974-12-20 Pitner Alfred
DE19636508A1 (en) * 1996-09-09 1998-03-12 Teves Gmbh Alfred Radial piston pump with one-sided closed bearing shell of the radial bearing

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