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公开(公告)号:US11781595B2
公开(公告)日:2023-10-10
申请号:US17751830
申请日:2022-05-24
申请人: Aktiebolaget SKF
发明人: Pieter Martin Lugt , Mourad Chennaoui , Nicola de Laurentis , Sathwik Chatra Kalsanka Ramakrishna , Jun Wang , Frank Berens
CPC分类号: F16C33/3875 , F16C19/06 , F16C19/166 , F16C33/416 , F16C33/6603 , F16C33/78
摘要: A deep groove ball bearing providing an inner ring, an outer ring and a plurality of balls being arranged between the inner ring and the outer ring. The inner ring and the outer ring each include a raceway for the plurality of balls. Each raceway encompasses the plurality of balls symmetrically. The deep groove ball bearing is lubricated by a lubricant being arranged on each axial side of the plurality of balls. The raceways are offset in the same axial direction from the axial center of the inner ring and the outer ring such that the raceways are offset to the axial side of the deep groove ball bearing where the shear rate acting on the lubricant is higher than on the other axial side of the deep groove ball bearing.
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公开(公告)号:US20220389963A1
公开(公告)日:2022-12-08
申请号:US17751830
申请日:2022-05-24
申请人: Aktiebolaget SKF
发明人: Pieter Martin Lugt , Mourad Chennaoui , Nicola de Laurentis , Sathwik Chatra Kalsanka Ramakrishna , Jun Wang , Frank Berens
摘要: A deep groove ball bearing providing an inner ring, an outer ring and a plurality of balls being arranged between the inner ring and the outer ring. The inner ring and the outer ring each include a raceway for the plurality of balls. Each raceway encompasses the plurality of balls symmetrically. The deep groove ball bearing is lubricated by a lubricant being arranged on each axial side of the plurality of balls. The raceways are offset in the same axial direction from the axial center of the inner ring and the outer ring such that the raceways are offset to the axial side of the deep groove ball bearing where the shear rate acting on the lubricant is higher than on the other axial side of the deep groove ball bearing.
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3.
公开(公告)号:US20230251075A1
公开(公告)日:2023-08-10
申请号:US18102105
申请日:2023-01-27
申请人: Aktiebolaget SKF
CPC分类号: G01B7/08 , F16C33/6625 , F16C33/6633 , G01M13/04 , G01N27/24 , F16C2233/00 , G01N33/2888
摘要: Disclosed is a monitoring method for monitoring the film thickness of a lubricant within a lubricated bearing, the bearing having an inner ring, an outer ring and rolling elements being arranged between the inner ring and the outer ring/ The monitoring method comprises a capacitance measuring step for measuring the total capacitance of the bearing; a first calculation step for determining a film thickness of the lubricant based on the measured capacitance of the bearing and for determining whether the lubrication condition is fully flooded or starved, and when the lubrication condition is fully flooded, a second calculation step for correcting the film thickness determined in the first calculation step.
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公开(公告)号:US20220397505A1
公开(公告)日:2022-12-15
申请号:US17836045
申请日:2022-06-09
申请人: Aktiebolaget SKF
摘要: System for determining rheological properties of grease, includes a grease worker having a cylinder intended to contain the grease and a piston intended to move inside the cylinder in a first direction and in a second opposite direction and provided with holes. The grease worker further including a seal provided between the piston and the cylinder, force for measuring the force required to push the grease through the holes of the piston is measured an electrical motor and an eccentrical connection transforming the rotating motion of the motor in a translation motion pushes the grease thought the holes, a thermocouple for measuring a temperature of the cylinder, a fan and a heater for regulating temperature for maintaining constant the measured temperature at a predetermined temperature, and a computing unit configured to determine at least one rheological property of the grease from the measured forces and from the seal friction.
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公开(公告)号:US20220364598A1
公开(公告)日:2022-11-17
申请号:US17623905
申请日:2020-07-07
发明人: Pieter Martin Lugt , Santosh Limaye
IPC分类号: F16C33/78 , F16C19/38 , F16C33/66 , F16C35/067
摘要: Disclosed is a sealed bearing arrangement that provides at least a bearing with an outer ring and an inner ring, which are rotatable to each other and form a rolling chamber between each other, in which a set of rolling elements. A lubricant is encompassed in the rolling chamber and the rolling chamber is sealed off from an environment by at least one sealing element. The inner ring, the outer ring and/or the sealing element includes at least one opening for providing a fluid passage through the sealing element. The bearing is arranged in a housing that is adapted to seal off the bearing from an outside environment. A lubricant is encompassed inside the housing. The housing including the at least one opening for providing a fluid passage from the inside of the housing to the outside. The opening is fluid tightly connected to an oxygen removing element and/or to a gas tank, which provides an oxygen poor to free fluid flow to the rolling chamber.
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公开(公告)号:US11525481B2
公开(公告)日:2022-12-13
申请号:US16263021
申请日:2019-01-31
申请人: Aktiebolaget SKF
发明人: Pieter Martin Lugt , Rob Bosman , Yuxin Zhou
摘要: A rolling bearing arrangement having a first and a second raceway element, and rolling bodies being arranged between the two raceway elements so that the two raceway elements are rotatable against each other in the manner of a rolling bearing, a space between the raceway elements in which the rolling bodies are rolling off comprising a lubricating grease, at least one sensor element for sensing temperature, at a specific point of the rolling bearing, particularly in the space, and for sensing speed of the rolling bearing and a unit receiving the sensed temperature and speed, calculating from the profiles of the sensed temperature over time and from the speed over time via a calculated energy imposed on the grease a used and/or remaining period of the grease life-time.
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公开(公告)号:US20220389968A1
公开(公告)日:2022-12-08
申请号:US17829991
申请日:2022-06-01
申请人: Aktiebolaget SKF
发明人: Pieter Martin Lugt , He Zhu
摘要: A rolling bearing having an inner ring, an outer ring and a plurality of rolling elements being arranged between the inner ring and the outer ring is provided. The inner ring and the outer ring each include a raceway for the plurality of rolling elements. Each raceway encompasses the plurality of rolling elements symmetrically. The rolling bearing further includes an asymmetric cage being arranged between the inner ring and the outer ring for holding the rolling elements. The rolling bearing is lubricated by a lubricant being arranged on each axial side of the plurality of rolling elements. The raceways are offset in the same axial direction from the axial center of the inner ring and the outer ring such that the shear rate acting on the lubricant is equal on each axial side of the rolling bearing.
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8.
公开(公告)号:US20190234463A1
公开(公告)日:2019-08-01
申请号:US16263021
申请日:2019-01-31
申请人: Aktiebolaget SKF
发明人: Pieter Martin Lugt , Rob Bosmann , Yuxin Zhou
CPC分类号: F16C33/6633 , F16C19/522 , F16C19/525 , F16C33/6625 , F16C2233/00 , F16C2240/06 , F16C2240/08 , F16C2240/26 , F16N2200/10 , G01M13/04
摘要: A rolling bearing arrangement having a first and a second raceway element, and rolling bodies being arranged between the two raceway elements so that the two raceway elements are rotatable against each other in the manner of a rolling bearing, a space between the raceway elements in which the rolling bodies are rolling off comprising a lubricating grease, at least one sensor element for sensing temperature, at a specific point of the rolling bearing, particularly in the space, and for sensing speed of the rolling bearing and a unit receiving the sensed temperature and speed, calculating from the profiles of the sensed temperature over time and from the speed over time via a calculated energy imposed on the grease a used and/or remaining period of the grease life-time.
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