公开(公告)号：US20230358278A1

公开(公告)日：2023-11-09

申请号：US18246815

申请日：2021-09-27

Applicant: NSK LTD.

Inventor： Toshikazu YABE ,  Tomoaki MATSUMOTO ,  AZUMA ITO ,  Keisuke YOKOYAMA ,  Nariaki AIHARA ,  Shintaro HONDA

IPC: F16C33/78 ,  F16C33/41 ,  F16C33/44 ,  C10M107/02 ,  C08G69/26 ,  C09K3/10

CPC classification number: F16C33/78 ,  F16C33/41 ,  F16C33/44 ,  C10M107/02 ,  C08G69/26 ,  C09K3/10 ,  C10M2205/0206 ,  C10N2040/02

Abstract: Provided is a rolling bearing using a retainer, particularly a highly reliable retainer in which dimensional stability required for a retainer of an outer ring guide type, ductility required for a crown-type retainer, improvement in adhesion of grease with a poly-α-olefin oil or the like as a base oil, and deformation prevention at a high speed can be achieved. The rolling bearing includes at least an inner ring 1, an outer ring 3, a synthetic resin retainer 9, and a rolling element 7, in which the synthetic resin retainer 9 is formed of a polyamide resin composition including polyamide 410 and a reinforcing fiber material with a content of 0% by weight to 40% by weight.

公开(公告)号：US20240269946A1

公开(公告)日：2024-08-15

申请号：US18290393

申请日：2022-05-13

Applicant: NSK LTD

Inventor： Takuya TSUNEMASU ,  Tomoaki MATSUMOTO

IPC: B29C70/68 ,  B29B11/16 ,  B29B13/06 ,  B29C43/00 ,  B29C43/18 ,  B29C70/12 ,  B29C70/46 ,  B29K101/10 ,  B29K105/00 ,  B29L15/00 ,  B29L31/04 ,  F16C43/06

CPC classification number: B29C70/68 ,  B29B11/16 ,  B29B13/06 ,  B29C43/003 ,  B29C43/18 ,  B29C70/12 ,  B29C70/46 ,  F16C43/065 ,  B29K2101/10 ,  B29K2105/251 ,  B29L2015/00 ,  B29L2031/04

Abstract: A method for producing a composite material molded article includes a process of, from a solution in which reinforcing fibers with an average fiber length of 0.5 mm or more and thermosetting resin are dispersed and mixed in a solvent, removing the solvent by paper-making to form a preform, and a process of press molding the obtained preform using a mold set at a temperature equal to or higher than a curing temperature of the thermosetting resin to form the composite material molded article.

公开(公告)号：US20240026927A1

公开(公告)日：2024-01-25

申请号：US18037699

申请日：2021-11-19

Applicant: NSK LTD.

Inventor： Azuma ITO ,  Tomoaki MATSUMOTO ,  Haruhisa ASHIDA

IPC: F16C33/66 ,  F16C19/18

CPC classification number: F16C33/6633 ,  F16C19/184

Abstract: The present invention provides a grease composition which makes it possible to prevent deterioration in sealing properties even when base oil having a kinetic viscosity of as low as, for example, 5-40 mm2/s is used and which makes it possible to realize both sealing properties and a decrease in torque. The present invention also provides a rolling device. A sealing member (12a) comprises a plurality of sealing lips (114), (115), (116) each of which is made of an elastic material. A grease composition is sealed in void parts (121), (122) that are each located between a sliding surface of a slinger (106), on which the plurality of sealing lips slide, and two adjacent sealing lips. This grease composition contains base oil and a polar polymer. The polar polymer has a weight-average molecular weight of 5,000-140,000.