公开(公告)号：US20250020166A1

公开(公告)日：2025-01-16

申请号：US18274849

申请日：2022-12-06

Applicant: NSK LTD.

Inventor： Takatsune ONOZAWA

IPC: F16C33/41 ,  F16C19/06

Abstract: A retainer that suppresses retainer sound, includes a main body portion, a plurality of pockets provided in a circumferential direction, and penetrating through the main body portion in a radial direction, and a retaining surface facing a ball, and forming a C shape when viewed from the radial direction. The retaining surface includes a C-shaped outer circumferential corner portion, a C-shaped inner circumferential corner portion, a first retaining surface arranged in a first rotational direction with respect to the ball, and a second retaining surface arranged in a second rotational direction with respect to the ball. The first retaining surface extends along a first spherical surface obtained by rotating a first virtual circle around a virtual line passing through an axial center and a center of the ball. The second retaining surface extends along a second spherical surface obtained by rotating a second virtual circle around the virtual line.

公开(公告)号：US12196265B2

公开(公告)日：2025-01-14

申请号：US17759287

申请日：2021-01-25

Applicant: NTN-SNR ROULEMENTS

Inventor： Alexandre Baudu ,  Vincent Pourroy-Solari ,  Siegfried Ruhland

IPC: F16C33/58 ,  F16C19/18 ,  F16C19/50 ,  F16C33/41 ,  F16C33/60

Abstract: A motor vehicle drive wheel assembly comprising a fixed subassembly comprising two outer raceways; and, a rotating subassembly comprising a first inner race, a second inner race and two rows of balls arranged in two pitch planes PP1 and PP2. The second inner bearing race has an outer diameter, measured in a section plane perpendicular to the axis of rotation and located between the first pitch plane and the second pitch plane, at a measurement distance DM of the first pitch plane, which is greater than a given threshold value VS.

公开(公告)号：US20240255028A1

公开(公告)日：2024-08-01

申请号：US18416942

申请日：2024-01-19

Applicant: NTN EUROPE

Inventor： Alexandre BAUDU ,  Vincent POURROY-SOLARI

IPC: F16C33/41 ,  F16C19/18

CPC classification number: F16C33/416 ,  F16C19/186 ,  F16C2326/02

Abstract: A motor vehicle drive wheel assembly includes a fixed subassembly that includes two outer raceways; a rotating subassembly that includes a wheel hub, two inner raceways and two rows of rolling bodies that are arranged in two pitch planes PP1 and PP2. One of the inner raceways is formed on a rolling bearing ring bearing against a shoulder of the wheel hub along a bearing interface having an outer circumference of large diameter.

公开(公告)号：US11898604B2

公开(公告)日：2024-02-13

申请号：US17383584

申请日：2021-07-23

Applicant: MINEBEA MITSUMI Inc.

Inventor： Tadahiko Karaki ,  Hirotaka Tohyama ,  Kunihiro Matsumoto

IPC: F16C33/44 ,  F16C33/38 ,  F16C33/41 ,  F16C19/06 ,  C08L71/00 ,  C08K7/06 ,  F16C19/16

CPC classification number: F16C33/44 ,  C08K7/06 ,  C08L71/00 ,  F16C33/3856 ,  F16C33/416 ,  F16C19/06 ,  F16C19/16 ,  F16C2208/02 ,  F16C2208/36 ,  F16C2316/13

Abstract: A ball bearing includes an inner ring; an outer ring placed outside of the inner ring; a plurality of rolling bodies intervening between the inner ring and the outer ring; and an annular cage including pockets rotatably holding the rolling bodies in a circumferential direction at intervals determining a rotation axis to be a center. The cage comprises a resin composition comprising a polyetherketone-based resin, graphite, and a carbon fiber. The resin composition comprises the polyetherketone-based resin in an amount of 60% by weight or more and 80% by weight or less, the graphite in an amount of 10% by weight or more and 30% by weight or less, and the carbon fiber in an amount of 5% by weight or more and 20% by weight or less when the entire resin composition is determined to be 100% by weight.

公开(公告)号：US11898603B2

公开(公告)日：2024-02-13

申请号：US17835260

申请日：2022-06-08

Applicant: AKTIEBOLAGET SKF

Inventor： Fabio Bogliacino ,  Alessandro Ferrero ,  Marco Gemello

IPC: F16C33/41 ,  F16C33/38 ,  F16C19/18

CPC classification number: F16C33/412 ,  F16C19/186 ,  F16C33/3843 ,  F16C33/3887 ,  F16C33/418 ,  F16C2326/02

Abstract: A bearing unit may be provided with at least one row of rolling bodies and at least one cage for retaining the rolling bodies. The at least one rolling cage may include a base rib; a plurality of fingers spaced circumferentially and extending at least from one side of the base rib; and a plurality of partially spherical cavities for holding the rolling bodies, each cavity being defined by the partially spherical concave surfaces of a pair of fingers of the plurality of fingers and of the base rib. The rolling bodies and the cages are in contact with each other via a plurality of protrusions formed on the partially spherical concave surfaces of the fingers and of the base rib. At least one lateral protrusion may be formed along the surface of each finger of the plurality of fingers of the retaining cage.

公开(公告)号：US20230148290A1

公开(公告)日：2023-05-11

申请号：US17759287

申请日：2021-01-25

Applicant: NTN-SNR ROULEMENTS

Inventor： Alexandre BAUDU ,  Vincent POURROY-SOLARI ,  Siegfried RUHLAND

IPC: F16C33/58 ,  F16C33/41 ,  F16C33/60 ,  F16C19/50

CPC classification number: F16C33/585 ,  F16C33/414 ,  F16C33/60 ,  F16C19/505 ,  F16C2326/02 ,  F16C2240/80

Abstract: A motor vehicle drive wheel assembly comprising a fixed subassembly comprising two outer raceways; and, a rotating subassembly comprising a first inner race, a second inner race and two rows of balls arranged in two pitch planes PP1 and PP2. The second inner bearing race has an outer diameter, measured in a section plane perpendicular to the axis of rotation and located between the first pitch plane and the second pitch plane, at a measurement distance DM of the first pitch plane, which is greater than a given threshold value VS.

公开(公告)号：US11421735B2

公开(公告)日：2022-08-23

申请号：US17273405

申请日：2019-09-11

Applicant: NTN CORPORATION

Inventor： Souta Koizumi

IPC: B60B27/00 ,  F16C33/41 ,  F16C43/08 ,  F16C19/18

Abstract: A vehicle wheel bearing device (1) is equipped with a cage (7) in which a pocket (Pt) is formed by adjacent pillar sections (7b) and a base section (7a) that is therebetween, and which retains a ball (8) in the pocket (Pt). Formed in the pillar sections (7b) are a claw portion (7e) and another short claw portion (7g) which project towards adjacent pillar sections, as well as a notched section (7i) cut toward the base section from the distal end radially inward of the claw portions of the pillar sections (7b). When viewed from the axial direction, the shortest length in the one claw portion (7e) to the center of the ball and the shortest length in the other short claw portion (7g) to the center of the ball are different.

公开(公告)号：US20210270280A1

公开(公告)日：2021-09-02

申请号：US17259030

申请日：2019-07-09

Applicant: Edwards Limited

Inventor： Emiliano Lucchetta

IPC: F04D29/056 ,  F16C33/38 ,  F16C33/41 ,  F16C33/66 ,  F16C19/06 ,  F04D19/04 ,  F04D29/06

Abstract: The present invention provides a bearing cage for a rotor bearing of a turbomolecular pump. The bearing cage comprises a plurality of bearing pockets each of which, in use, houses a bearing ball such that the bearing ball operably engages an inner race and an outer race of the rotor bearing. Each bearing pocket of the bearing cage has a primary chamber for housing the bearing ball and each bearing pocket further comprises a sump.

公开(公告)号：US11035409B2

公开(公告)日：2021-06-15

申请号：US16601961

申请日：2019-10-15

Applicant: Aktiebolaget SKF

Inventor： Philip Engelen ,  William Finetti ,  Francesco Lamboglia ,  Giorgio Missiaggia

IPC: F16C33/41 ,  F16C33/40 ,  F16C19/18

Abstract: A bearing unit having at least one row of rolling bodies; and at least one cage for retaining a respective one of the at least one row of rolling bodies. The at least one cage comprising at least one base bar, a plurality of arms circumferentially spaced apart and extending from one side of the base bar, and a plurality of partially spherical cavities for retaining the respective one of the at least one row of rolling bodies. The respective row of rolling bodies and the at least one cage are in contact with each other along contact points positioned near a polar region of the respective one of the at least one row of rolling bodies, so that an angular distance (α) of the contact points with respect to an equator of the respective one of the at least one row of rolling bodies is between 40° and 75°.

公开(公告)号：US10968954B2

公开(公告)日：2021-04-06

申请号：US15640955

申请日：2017-07-03

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Iino ,  Takayuki Kosaka ,  Misato Hanaoka ,  Hisaya Nakamura ,  Koji Ishii

IPC: F16C33/66 ,  C10M169/02 ,  F16C33/41 ,  C10M101/02 ,  C10M105/04 ,  F16C19/54 ,  C10N20/02 ,  C10N30/02 ,  C10N30/06 ,  C10N40/02 ,  C10N50/10 ,  C10M115/08 ,  G11B5/48

Abstract: A bearing grease includes a base oil and a thickener, and the base oil includes mineral oil and poly-α-olefin. The poly-α-olefin may be a blend of poly-α-olefin having a kinetic viscosity higher than that of the mineral oil and poly-α-olefin having a kinetic viscosity equal to or lower than that of the mineral oil, and the kinetic viscosity of the base oil at 40° C. is in a range of 40 through 90 mm2/s. The amount of the poly-α-olefin by mass in the base oil is greater than the amount of the mineral oil by mass in the base oil. The worked penetration of the grease is in a range of 200 through 250. The grease reduces flying grease and outgas and has superior low-temperature characteristics.