公开(公告)号：US20230266199A1

公开(公告)日：2023-08-24

申请号：US18018126

申请日：2021-08-18

Applicant: NTN Corporation

Inventor： Shun TAMAKI

IPC: G01M13/04 ,  B23P19/02 ,  F16C19/18

CPC classification number: G01M13/04 ,  B23P19/02 ,  F16C19/18 ,  F16C2326/02

Abstract: Provided is a rotational torque inspection method for a bearing device for vehicle wheel that enables detection of an abnormality in a component or step occurring midway in the manufacturing of the wheel bearing device. This rotational torque inspection method for a wheel bearing device 1 comprises: a press-fitting step S02; a post-press-fitting rotational torque measurement step S04 for measuring a rotational torque T1 of the wheel bearing device 1 when, after the press-fitting step S02, the hub ring 3 and the inner ring 4 that are inner members and an outer ring 2 that is an outer member are rotated in a relative manner; and a post-press-fitting rotational torque determination step S05 for determining the fitness of the rotational torque T1 by whether or not the rotational torque T1 measured in the post-press-fitting rotational torque measurement step S04 is within a range of standard values S1.

公开(公告)号：US20230251152A1

公开(公告)日：2023-08-10

申请号：US18012758

申请日：2021-08-18

Applicant: NTN Corporation

Inventor： Shun TAMAKI ,  Masaaki HAYASHI ,  Sadayuki KUBOTA ,  Tomoko BABA

IPC: G01L5/00 ,  G01L1/26 ,  F16C19/18

CPC classification number: G01L5/0009 ,  G01L1/26 ,  F16C19/18 ,  F16C2233/00 ,  B60B27/0094

Abstract: The rotational torque inspection method for a bearing device comprises: a press-fitting step (S02); a first bearing preload value calculation step (S03) for calculating a first bearing preload value (P1); a post-press-fit rotational torque measurement step (S05) for measuring a post-press-fit rotational torque (Ta); a crimping step (S06) for crimping the small diameter step part to the inner ring; a post-crimping rotational torque measurement step (S07) for measuring a post-crimping rotational torque (Tb); a second bearing preload value calculation step (S08) for calculating a second bearing preload value (P2); and a determination step (S09) for determining the suitability of the preload depending on whether or not the second bearing preload value (P2) is within a range of a reference value.

公开(公告)号：US20220242167A1

公开(公告)日：2022-08-04

申请号：US17618738

申请日：2020-06-16

Applicant: NTN Corporation

Inventor： Tasuku FURUKAWA ,  Shun TAMAKI

IPC: B60B27/00 ,  F16C19/18 ,  F16J15/3232

Abstract: A bearing device for a wheel, which has improved axial assembly accuracy of a sealing member by reducing the amount of springback. The bearing device for a wheel comprises an inner sealing member that blocks an inner opening end of an annular space formed by an outer ring and an inner ring. A sealing ring of the inner sealing member has a core metal fitting in the outer ring and an elastic member joined to the core metal. The elastic member has: a pressing part that is pressed inward in the axial direction when the sealing ring is press-fitted into the outer ring; and a non-pressing part that is not pressed inward in the axial direction when the sealing ring is press-fitted into the outer ring, wherein the axial thickness of the pressing part is thinner than the axial thickness of the non-pressing part.