公开(公告)号：US20200318681A1

公开(公告)日：2020-10-08

申请号：US16758204

申请日：2018-10-24

Applicant: NTN CORPORATION

Inventor： Kazunari YAMAMOTO ,  Hayato TANIGUCHI

IPC: F16C19/18 ,  F16C33/58 ,  F16C33/64

Abstract: A wheel bearing device (1) including: an outer member (2) on the inner periphery of which an outer-side rolling surface (2c/2d) is formed; an inner member (3) on the outer periphery of which an inner-side rolling surface (3c/3d) is formed; and a plurality of rolling bodies (41) interposed between the rolling surfaces (2c/2d/3c/3d) of the outer member (2) and the inner member (3). The wheel bearing device having a spline hole (3b) formed in a through hole (3h) of the inner member (3). The spline hole includes a guide groove (3G) formed on an inner circumferential surface thereof. A guide plate (8G) of a finishing broach (8) passes through the guide groove in the inner periphery of the spline hole (3b).

公开(公告)号：US20230003256A1

公开(公告)日：2023-01-05

申请号：US17872589

申请日：2022-07-25

Applicant: NTN CORPORATION

Inventor： Kazunari YAMAMOTO ,  Hayato TANIGUCHI

IPC: F16C33/58 ,  F16C33/64

Abstract: A wheel bearing device (1) including: an outer member (2) on the inner periphery of which an outer-side rolling surface (2c/2d) is formed; an inner member (3) on the outer periphery of which an inner-side rolling surface (3c/3d) is formed; and a plurality of rolling bodies (41) interposed between the rolling surfaces (2c/2d/3c/3d) of the outer member (2) and the inner member (3). The wheel bearing device having a spline hole (3b) formed in a through hole (3h) of the inner member (3). The spline hole includes a guide groove (3G) formed on an inner circumferential surface thereof. A guide plate (8G) of a finishing broach (8) passes through the guide groove in the inner periphery of the spline hole (3b).