公开(公告)号：US20170343045A1

公开(公告)日：2017-11-30

申请号：US15603012

申请日：2017-05-23

申请人： MINEBEA MITSUMI INC.

发明人： Yusuke ASAI ,  Shintaro TAKATA ,  Akimi FURUKOSHI

IPC分类号： F16C33/66 ,  C10M119/22 ,  C10M129/42 ,  F16C19/06 ,  C10M133/16 ,  C10M145/16 ,  C10M107/38 ,  C10M115/08 ,  C10M131/00

摘要： A rolling bearing is filled with a grease composition that contains a fluorine-based grease including a fluorine-based base oil and a fluorine-based thickener, a non-fluorine-based grease including a non-fluorine-based base oil and a non-fluorine-based thickener, and an additive serving as a dispersant. The non-fluorine-based thickener includes at least one of aliphatic-aromatic urea, alicyclic-aliphatic urea and aliphatic urea. The dispersant includes at least one of polycarboxylic acid metal salt, fluorine-containing group/lipophilic group-containing oligomer, fluorinated ether diamide, and organic acid metal salt.

公开(公告)号：US20180216026A1

公开(公告)日：2018-08-02

申请号：US15873955

申请日：2018-01-18

申请人： MINEBEA MITSUMI Inc.

发明人： Yusuke ASAI

IPC分类号： C10M169/00

CPC分类号： C10M169/00 ,  C10M169/06 ,  C10M2203/1006 ,  C10M2205/026 ,  C10M2205/0285 ,  C10M2207/127 ,  C10M2207/2855 ,  C10M2209/084 ,  C10M2209/086 ,  C10M2215/1023 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2220/082 ,  C10N2230/02 ,  C10N2230/76 ,  C10N2240/02 ,  C10N2250/10

摘要： A grease composition including: a base oil, a thickener, and 0.2 wt % or more of a dispersing agent. The dispersing agent includes at least one of a metal salt of a carboxylic acid, a metal salt of a polycarboxylic acid, and a copolymer of a carboxylic acid metal salt and a hydrocarbon compound, and the dispersing agent has an average particle diameter of 0.5 μm or more and 5 μm or less. The metal salt of the carboxylic acid, the metal salt of the polycarboxylic acid, and the carboxylic acid metal salt forming the copolymer of the carboxylic acid metal salt and the hydrocarbon compound may be an alkali metal salt including at least one of a sodium salt, a lithium salt and a potassium salt, or an alkali earth metal salt including at least one of a magnesium salt and a calcium salt.

公开(公告)号：US20180051750A1

公开(公告)日：2018-02-22

申请号：US15679320

申请日：2017-08-17

申请人： MINEBEA MITSUMI Inc.

发明人： Kazuhito OZAWA ,  Yusuke ASAI

IPC分类号： F16C33/46 ,  F16C19/18 ,  F01D25/16

CPC分类号： F16C33/4629 ,  F01D25/16 ,  F01D25/162 ,  F05D2220/40 ,  F05D2240/54 ,  F05D2260/96 ,  F16C19/184 ,  F16C33/385 ,  F16C33/3887 ,  F16C2240/70 ,  F16C2360/24

摘要： A ball bearing unit for a turbocharger according to an embodiment includes: an outer ring, a first inner ring, a second inner ring, a first machined retainer and a second machined retainer. The outer ring has an inner peripheral surface provided with an outer ring raceway surface at one end side and an outer ring raceway surface at another end side. At least one of the first machined retainer and the second machined retainer includes a plurality of pockets that hold the plurality of balls in a rollable manner in a circumferential direction. Each of the pockets has a diameter of equal to or more than 1.03 times and equal to or less than 1.07 times of a diameter of the balls.

公开(公告)号：US20220306963A1

公开(公告)日：2022-09-29

申请号：US17654303

申请日：2022-03-10

申请人： MINEBEA MITSUMI Inc.

发明人： Daiki YAMAMOTO ,  Yusuke ASAI ,  Motojiro TSUNA

IPC分类号： C10M169/00 ,  C10M107/38 ,  C10M107/02 ,  C10M119/22 ,  C10M117/04 ,  C10M123/04 ,  C10M137/04

摘要： A grease composition for resin lubrication, the grease composition to be applied to a sliding surface made of resin, the grease composition containing: a fluorine-based base oil (a kinematic viscosity at 40° C. of 300 mm2/s or higher) and a synthetic hydrocarbon oil as base oils; a fluorine-based thickener, and a lithium soap thickener or a lithium complex soap thickener as thickeners; and a fluorine-based surfactant and an extreme pressure additive as additives; and a resin sliding member (slide switch) having a sliding surface made of resin, the sliding surface provided by application with the grease composition.

公开(公告)号：US20200032157A1

公开(公告)日：2020-01-30

申请号：US16523180

申请日：2019-07-26

申请人： MINEBEA MITSUMI INC.

发明人： Yusuke ASAI ,  Daiki YAMAMOTO ,  Takuya KITAJIMA ,  Motojiro TSUNA

IPC分类号： C10M169/00 ,  C10M119/22 ,  C10M119/02 ,  C10M123/04 ,  C10M153/04 ,  C10M145/18

摘要： The invention provides a grease composition for lubrication of a sliding surface made of resin, including a fluorine-based base oil and a synthetic hydrocarbon oil as a base oil; a fluorine-based thickener, and a lithium soap thickener or a lithium complex soap thickener as a thickener; and an extreme pressure additive as an additive. The invention also provides a sliding member including a sliding surface made of a resin wherein the grease composition for lubrication is applied to the sliding surface made of a resin.

公开(公告)号：US20190276763A1

公开(公告)日：2019-09-12

申请号：US16425508

申请日：2019-05-29

申请人： MINEBEA MITSUMI INC.

发明人： Yusuke ASAI ,  Yusuke ENOMOTO ,  Shintaro TAKATA

IPC分类号： C10M169/02

摘要： The present invention is a grease composition, comprising a fluorine-based grease, a urea-based grease and a soap-based grease (a calcium complex soap thickener, a calcium soap thickener, a barium soap thickener, a magnesium soap thickener or a sodium soap thickener), and a rolling bearing in which the grease composition is filled.