WO1998026190A1 - Rolling element bearing system with improved damping - Google Patents
Rolling element bearing system with improved damping Download PDFInfo
- Publication number
- WO1998026190A1 WO1998026190A1 PCT/NL1997/000690 NL9700690W WO9826190A1 WO 1998026190 A1 WO1998026190 A1 WO 1998026190A1 NL 9700690 W NL9700690 W NL 9700690W WO 9826190 A1 WO9826190 A1 WO 9826190A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bearing
- damping layer
- ring
- bearing system
- damping
- Prior art date
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
- 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
-
- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
- F16C27/045—Ball or roller bearings, e.g. with resilient rolling bodies with a fluid film, e.g. squeeze film damping
-
- 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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/066—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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/042—Housings for rolling element bearings for rotary movement
- F16C35/047—Housings for rolling element bearings for rotary movement with a base plate substantially parallel to the axis of rotation, e.g. horizontally mounted pillow blocks
Definitions
- the invention is related to a bearing system, comprising a rolling element bearing having an inner ring and an outer ring which enclose a bearing space containing at least one series of rolling elements, a shaft connected to the inner ring, and a bearing support connected to the outer ring.
- Rolling element bearing systems are applied in rotating machinery, such as motors, vehicles, domestic appliances etc.
- the bearings should have a low noise level, such as for applications in electric motors which are used for driving domestic appliances.
- the object of the invention is therefore to provide a bearing which has the required stiffness characteristics, but which also offers improved damping characteristics.
- This object is achieved in that at least one of the rings of the bearing engages a damping layer which at least partly consists of a visco-elastic material or a damping fluid, which damping layer is at a distance from the raceway of said ring.
- the damping layer provides an increased damping due to its visco- elastic properties. Moreover, said layer can be rather thin, whereby virtually no displacements in radial direction are possible and thus the radial stiffness of the bearing is not, or only in a limited way influenced by the visco-elastic material. Despite the small deformation of the visco-elastic layer, a sufficient damping is obtained due to the shear stresses which are generated in said layer as a result of the relatively high pressures in the contact between the rolling element set and the ring.
- the radial deformation of the damping layer is preferably of the same order of magnitude as the indentation or contact deformation of the raceway which occurs between rolling elements and said ring under nominal load without the presence of such layer Under these conditions, the radial stiffness of the bearing is about of the same order of magnitude to the radial stiffness of a standard bearing
- the layer of visco-elastic material may be applied in a number of positions According to a first possibility, at least one of the rings comprises two concentric ring parts which are mutually connected by the damping layer The visco-elastic layer thus may form an integral part of one of the bearing rings
- damping layer is situated near the region of maximum shear stress which occurs in said ring as a result of the contact of the rolling elements over the raceway
- the layer can be at sufficient distance from the outer surface of the outer ring or the bore of the inner ring, where reduced shear stresses are encountered so that the bearing and in particular the layer have sufficient fatigue life
- the damping layer may be situated on the outer circumference of the outer ring, and/or on the inner circumference of the inner ring
- the damping obtained can also be influenced by selecting a proper material or layout
- the damping layer may be composed of at least two layers with different material characteristics and/or thickness
- the annular damping layer need not be of a continuous character in axial direction
- the damping layer may comprise segments of visco-elastic material separated by axial air gaps
- the bearing may comprise at least two concentric damping layers
- bearing systems which for instance may comprise a deep groove ball bearing
- the rolling elements such as balls exert a force on the raceways of the rings
- these rings are locally deformed as a result of the contact forces
- the deformation is maximal in the middle region close to the contact area, and thus in the middle region of the rings
- the adjacent edge regions of the rings are deformed in a far less degree
- the rings and thereby the raceways may have form deviations such as out-of-roundness or waviness in circumferential direction
- Such waviness induces vibrations in the bearing system, which give rise to noise.
- these phenomena are aggravated.
- a bearing system can be obtained which performs better with respect to such vibrations. This is achieved in that at least one of the cooperating surfaces of the outer ring and the bearing support, and/or at least one of the cooperating surfaces of the inner ring and the shaft have a circumferential groove directly opposite the raceway of said ring.
- the ring in question of the bearing system according to the invention is able to locally deform in the contact area between raceway and rolling element, due to the fact that the ring is exposed to supporting forces only in the adjacent edge areas thereof.
- the damping effect can be obtained by filling at least one groove with a damping fluid or a solid visco-elastic material.
- the outer ring may have a groove in its outer circumference; in the alternative, the bearing support may have a groove in its contact surface.
- the inner ring may have a groove in its outer circumference, or the shaft may have a groove in its contact surface.
- the groove according to US-A-5310268 plays a role in fixing the outer ring of the bearing in a housing.
- the groove has protruding, sharp edges which cut into the housing wall.
- Such layout is not suitable for attenuating vibrations, but would rather lead to fretting when subjected to vibrations.
- the edges between the groove and the surface in which the groove opens out are rounded off in a cross-section through the axis of the bearing.
- the smooth transition between groove and opposite wall of e.g. a housing provides a reduction of vibrations, without causing damage to the adjoining components in question.
- the ratio of the minimum distance between the raceway of a bearing ring, and the damping layer, to the thickness of the damping layer is between 5-15.
- the mimimum distance between the raceway of a bearing ring, and the damping layer, to the thickness of the damping layer may be between 7-10.
- the ratio of the minimum distance between the raceway of a bearing ring, and the damping layer, to the thickness of the damping layer is 8.
- the invention is also related to a rolling element bearing having an inner ring and an outer ring which enclose a bearing space containing at least one series of rolling elements; according to the invention, at least one of the rings comprises a damping layer which at least partly consists of a visco-elastic material, which damping layer is at a distance from the raceway of said ring.
- the outer ring and/or the inner ring may have a circumferential groove directly opposite the raceway of said ring, which ring is at least partly filled with a visco-elastic material.
- Figure 1 shows a first embodiment of a bearing system according to the invention.
- Figure 2 shows a second embodiment
- Figure 3 shows a cross-section through a third embodiment.
- Figure 4 shows a cross-section through a fourth embodiment.
- Figure 5 shows a fifth embodiment of the bearing system according to the invention.
- Figure 6 shows a sixth embodiment.
- Figure 7 shows a detail of figure 5.
- a bearing 1 is shown which is supported in a support 2.
- the bearing 1 comprises an outer ring 3 and an inner ring 4, which is connected to a shaft 5.
- the outer ring 3 and the inner ring 4 are rotatable with respect to each other by means of balls 6.
- a thin visco-elastic layer 7 is present around the outside of the outer ring 3, which visco-elastic layer 7 itself is supported in a correspondingly shaped hole in bearing support 2.
- the deformation of the visco-elastic layer 7 is about the same order of magnitude as the contact deformation of the raceways of outer ring 3 and inner ring 4, as generated at the contact spots between rolling elements 6 and outer ring 3 or inner ring 4. Thanks to the small thickness of the visco-elastic layer 7, the shaft 5 is supported in a relatively stiff way in the radial direction, as is the case with normal bearings. On the other hand, despite the small deformation of the visco-elastic layer 7, it is able to dampen out vibrations in the shaft 5.
- a ball bearing comprising an outer ring 8, an inner ring 9 connected to a shaft 10, and balls 11.
- the outer ring is split into two concentric outer rings halves 12, 13, which are interconnected by a thin visco-elastic layer 14.
- the deformation of this intermediate visco-elastic layer 14 is of the same order of magnitude as the contact deformation.
- the distance of the visco-elastic layer 14 with respect to the raceway of the outer ring is selected such that the visco-elastic layer 14 finds itself where the shear stresses in the outer ring 8 are at a maximum. Some distance to the area of maximum shear stress is however required, such that the fatigue life of said layer is not reduced.
- the embodiment of figure 3 shows a cross-section through the axis of a bearing.
- the bearing comprises an outer ring 15, and an inner ring 16 as well as balls 17.
- Outer ring 15 comprises two outer ring halves 18, 19, enclosing a thin visco-elastic layer 20.
- the thin visco-elastic layer 20 is chevron-shaped, such that in the legs 21 of each chevron additional shear forces are generated under load.
- FIG 4 shows a bearing having an intermediate visco-elastic layer 24 which is sandwiched between metal foil layers 23.
- the sandwich of these layers 23, 24 forms a unity, and has been applied in the inner ring of a bearing.
- the outer ring of this bearing has been indicated by 26; the balls are indicated by 25.
- Figure 5 shows a bearing system comprising a deep groove ball bearing 31, the outer ring 32 two of which is supported in a housing 33.
- the inner ring 34 in turn rotatably supports a shaft 35. Between the rings 32, 34, balls 36 have been accommodated.
- the outer ring 32 has a circumferential groove 37, which at that area does not contact the housing 33, and which is filled with a visco-elastic material 45.
- the outer ring 32 is able to flex a little bit under the forces exerted thereon by the balls 36, in such a way that vibrations, such as caused by the waviness of the outer and inner ring, are reduced by the visco-elastic material 45.
- the deep groove ball bearing 38 is of standard design, and has rings 39, 40 between which balls 41 are accommodated.
- the housing 42 has a groove 43, at the spot directly opposite the raceway 44 of inner ring 50, which groove 43 is filled with a visco-elastic material 46.
- the shaft 35 may have a circumferential groove, directly opposite the corresponding raceway of the inner ring 39.
- figure 7 shows the edge area 44 of the groove 37.
- This edge area 44 is rounded off somewhat, so as to provide a smooth transition zone. Such smooth transition is favourable with respect to vibration reduction, and prevents fretting under dynamic loads.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52652798A JP2001507107A (en) | 1996-12-12 | 1997-12-12 | Rolling element bearing system with improved damping |
AU53469/98A AU5346998A (en) | 1996-12-12 | 1997-12-12 | Rolling element bearing system with improved damping |
EP97950485A EP0943058A1 (en) | 1996-12-12 | 1997-12-12 | Rolling element bearing system with improved damping |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1004760 | 1996-12-12 | ||
NL1004760A NL1004760C2 (en) | 1996-12-12 | 1996-12-12 | Rolling element bearing system for rotating machinery e.g. vehicles, domestic appliances, motors |
NL1004763 | 1996-12-12 | ||
NL1004763A NL1004763C2 (en) | 1996-12-12 | 1996-12-12 | Rolling element bearing system for rotating machinery e.g. vehicles, domestic appliances, motors |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998026190A1 true WO1998026190A1 (en) | 1998-06-18 |
Family
ID=26642494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL1997/000690 WO1998026190A1 (en) | 1996-12-12 | 1997-12-12 | Rolling element bearing system with improved damping |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0943058A1 (en) |
JP (1) | JP2001507107A (en) |
AU (1) | AU5346998A (en) |
WO (1) | WO1998026190A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000030888A1 (en) * | 1998-11-24 | 2000-06-02 | Audi Ag | Mounting for a vehicle seat and roller therefor |
WO2006000934A1 (en) * | 2004-06-21 | 2006-01-05 | Koninklijke Philips Electronics N.V. | Shaving apparatus |
DE102005003986A1 (en) * | 2005-01-28 | 2006-08-03 | Schaeffler Kg | camp |
WO2006089637A1 (en) * | 2005-02-22 | 2006-08-31 | Schaeffler Kg | Sound-insulating ring nut for bearings |
WO2007002903A1 (en) * | 2005-06-29 | 2007-01-04 | The Timken Company | Vibration damping device for bearings and method of dampening vibrations |
WO2010062519A1 (en) * | 2008-10-27 | 2010-06-03 | The Timken Company | Noise isolating rolling element bearing for a crankshaft |
WO2012155959A1 (en) * | 2011-05-16 | 2012-11-22 | Aktiebolaget Skf | Rolling bearing having insulating material. |
WO2014000798A1 (en) * | 2012-06-28 | 2014-01-03 | Aktiebolaget Skf | Machine arrangement |
WO2016092114A1 (en) * | 2014-12-12 | 2016-06-16 | Universität Stuttgart | Rolling-element bearing |
EP3059463A1 (en) * | 2015-02-19 | 2016-08-24 | United Technologies Corporation | Squeeze film damper |
US10443683B2 (en) | 2017-09-14 | 2019-10-15 | Fanuc Corporation | Bearing and eccentricity correction method |
CN110397676A (en) * | 2018-04-24 | 2019-11-01 | 斯凯孚公司 | The manufacturing method of rolling bearing and the rolling bearing with electrically insulating material |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101922503A (en) * | 2010-08-11 | 2010-12-22 | 洛阳轴研科技股份有限公司 | Designing method of high-speed ball bearing formed by sandwich integral damping outer circle |
KR101697769B1 (en) * | 2012-12-28 | 2017-01-19 | 주식회사 에스앤씨 | Cartesian coordinate robot |
CN111637157B (en) * | 2020-05-15 | 2021-11-05 | 大连理工大学 | Composite structure anti-vibration bearing based on viscoelastic damping element |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE522004A (en) * | 1952-09-11 | |||
CH244128A (en) * | 1944-11-15 | 1946-08-31 | Sa Benjamin Pellaton | Ball bearing. |
US2674505A (en) * | 1951-07-07 | 1954-04-06 | Connecticut Hard Rubber Co | Rubber mounted bearing |
DE1037211B (en) * | 1957-01-26 | 1958-08-21 | Duerkoppwerke Ag | Tapered roller bearings |
GB860973A (en) * | 1959-05-14 | 1961-02-15 | Francesco Vasta Di Pietro E Di | Improvements in ball or roller bearings |
FR1550919A (en) * | 1967-04-26 | 1968-12-20 | ||
FR2065887A5 (en) * | 1969-10-10 | 1971-08-06 | Bando Kiko Co | |
FR2158937A5 (en) * | 1971-10-25 | 1973-06-15 | Skf Ind Trading & Dev | |
FR2224014A5 (en) * | 1973-03-26 | 1974-10-25 | Roulements Soc Nouvelle | |
JPS63210413A (en) * | 1987-02-26 | 1988-09-01 | Fuji Tool & Die Co Ltd | Chain noise reducing mechanism in transfer mechanism |
JPH0198712A (en) * | 1987-10-07 | 1989-04-17 | Koyo Seiko Co Ltd | Cylindrical roller bearing |
US5071262A (en) * | 1990-11-05 | 1991-12-10 | General Electric Company | Squeeze film damper fluid control |
JPH0450529A (en) * | 1990-06-18 | 1992-02-19 | Mitsubishi Heavy Ind Ltd | Damping device for overphang rotor |
DE4134604A1 (en) * | 1991-10-19 | 1993-04-22 | Schaeffler Waelzlager Kg | Rolling bearings with noise attenuation - obtained by means of an oil-filled gap in compound bearing races |
US5247855A (en) * | 1992-03-10 | 1993-09-28 | Allied Signal Inc. | Roller bearing assembly with compliant anti-rotation ring |
-
1997
- 1997-12-12 JP JP52652798A patent/JP2001507107A/en active Pending
- 1997-12-12 AU AU53469/98A patent/AU5346998A/en not_active Abandoned
- 1997-12-12 EP EP97950485A patent/EP0943058A1/en not_active Withdrawn
- 1997-12-12 WO PCT/NL1997/000690 patent/WO1998026190A1/en not_active Application Discontinuation
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH244128A (en) * | 1944-11-15 | 1946-08-31 | Sa Benjamin Pellaton | Ball bearing. |
US2674505A (en) * | 1951-07-07 | 1954-04-06 | Connecticut Hard Rubber Co | Rubber mounted bearing |
BE522004A (en) * | 1952-09-11 | |||
DE1037211B (en) * | 1957-01-26 | 1958-08-21 | Duerkoppwerke Ag | Tapered roller bearings |
GB860973A (en) * | 1959-05-14 | 1961-02-15 | Francesco Vasta Di Pietro E Di | Improvements in ball or roller bearings |
FR1550919A (en) * | 1967-04-26 | 1968-12-20 | ||
FR2065887A5 (en) * | 1969-10-10 | 1971-08-06 | Bando Kiko Co | |
FR2158937A5 (en) * | 1971-10-25 | 1973-06-15 | Skf Ind Trading & Dev | |
FR2224014A5 (en) * | 1973-03-26 | 1974-10-25 | Roulements Soc Nouvelle | |
JPS63210413A (en) * | 1987-02-26 | 1988-09-01 | Fuji Tool & Die Co Ltd | Chain noise reducing mechanism in transfer mechanism |
JPH0198712A (en) * | 1987-10-07 | 1989-04-17 | Koyo Seiko Co Ltd | Cylindrical roller bearing |
JPH0450529A (en) * | 1990-06-18 | 1992-02-19 | Mitsubishi Heavy Ind Ltd | Damping device for overphang rotor |
US5071262A (en) * | 1990-11-05 | 1991-12-10 | General Electric Company | Squeeze film damper fluid control |
DE4134604A1 (en) * | 1991-10-19 | 1993-04-22 | Schaeffler Waelzlager Kg | Rolling bearings with noise attenuation - obtained by means of an oil-filled gap in compound bearing races |
US5247855A (en) * | 1992-03-10 | 1993-09-28 | Allied Signal Inc. | Roller bearing assembly with compliant anti-rotation ring |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 12, no. 490 (M - 779) 21 December 1988 (1988-12-21) * |
PATENT ABSTRACTS OF JAPAN vol. 13, no. 310 (M - 850) 14 July 1989 (1989-07-14) * |
PATENT ABSTRACTS OF JAPAN vol. 16, no. 239 (M - 1258) 2 June 1992 (1992-06-02) * |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000030888A1 (en) * | 1998-11-24 | 2000-06-02 | Audi Ag | Mounting for a vehicle seat and roller therefor |
US8336211B2 (en) | 2004-06-21 | 2012-12-25 | Koninklijke Philips Electronics N.V | Shaving apparatus |
WO2006000934A1 (en) * | 2004-06-21 | 2006-01-05 | Koninklijke Philips Electronics N.V. | Shaving apparatus |
DE102005003986A1 (en) * | 2005-01-28 | 2006-08-03 | Schaeffler Kg | camp |
EP1686274A3 (en) * | 2005-01-28 | 2008-07-30 | Schaeffler KG | Bearing |
WO2006089637A1 (en) * | 2005-02-22 | 2006-08-31 | Schaeffler Kg | Sound-insulating ring nut for bearings |
WO2007002903A1 (en) * | 2005-06-29 | 2007-01-04 | The Timken Company | Vibration damping device for bearings and method of dampening vibrations |
WO2010062519A1 (en) * | 2008-10-27 | 2010-06-03 | The Timken Company | Noise isolating rolling element bearing for a crankshaft |
WO2012155959A1 (en) * | 2011-05-16 | 2012-11-22 | Aktiebolaget Skf | Rolling bearing having insulating material. |
CN103534501A (en) * | 2011-05-16 | 2014-01-22 | Skf公司 | Rolling bearing having insulating material. |
WO2014000798A1 (en) * | 2012-06-28 | 2014-01-03 | Aktiebolaget Skf | Machine arrangement |
WO2016092114A1 (en) * | 2014-12-12 | 2016-06-16 | Universität Stuttgart | Rolling-element bearing |
DE102014118553A1 (en) * | 2014-12-12 | 2016-06-16 | Universität Stuttgart | roller bearing |
EP3059463A1 (en) * | 2015-02-19 | 2016-08-24 | United Technologies Corporation | Squeeze film damper |
US9470263B2 (en) | 2015-02-19 | 2016-10-18 | United Technologies Corporation | Squeeze film damper |
US10443683B2 (en) | 2017-09-14 | 2019-10-15 | Fanuc Corporation | Bearing and eccentricity correction method |
CN110397676A (en) * | 2018-04-24 | 2019-11-01 | 斯凯孚公司 | The manufacturing method of rolling bearing and the rolling bearing with electrically insulating material |
Also Published As
Publication number | Publication date |
---|---|
AU5346998A (en) | 1998-07-03 |
EP0943058A1 (en) | 1999-09-22 |
JP2001507107A (en) | 2001-05-29 |
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