WHEEL HUB BEARING UNIT WITH OPTIMIZED POSITIONING OF OUTBOARD BALLS

    公开(公告)号:US20240190174A1

    公开(公告)日:2024-06-13

    申请号:US18521051

    申请日:2023-11-28

    申请人: AKTIEBOLAGET SKF

    IPC分类号: B60B27/00 F16C33/36 F16C33/58

    摘要: A wheel hub bearing unit includes a hub rotatable about an axis and having a flange connectable with a wheel, an inner ball raceway and an inner roller raceway. An outer ring is connectable with the vehicle and disposed about the hub and has an outer ball raceway and an outer roller raceway. A plurality of balls roll upon the inner and outer ball raceways and a plurality of tapered rollers roll upon the inner and outer roller raceways. A contact angle between the balls and the ball raceways has a value between ten degrees and forty degrees. Each line extending through ball inner and outer contact points intersects with a line extending through a roller midpoint circle at a vertex, the vertex being spaced from a midpoint of a spacing line segment between ball and roller pitch circles by an axial distance of no greater than 7.5 millimeters.

    DRIVE AXLE ASSEMBLY
    3.
    发明公开
    DRIVE AXLE ASSEMBLY 审中-公开

    公开(公告)号:US20240066919A1

    公开(公告)日:2024-02-29

    申请号:US17895439

    申请日:2022-08-25

    IPC分类号: B60B27/00

    摘要: A drive axle assembly capable of reducing drag torque by eliminating an inner bearing seal from a wheel bearing and capable of reducing the generation of frictional noise at corrugations of a boot. The drive axle assembly includes a wheel bearing assembled with a wheel housing, an outer ring having a ring shape and including an outer-diameter portion secured to an outer wheel of a wheel bearing, a boot including a large-diameter portion formed at one end thereof and assembled with an inner-diameter portion of the outer ring, and a bearing seal unit disposed between a small-diameter portion formed at the other end of the boot and a drive shaft to restrict rotation of the boot and to prevent introduction of foreign substances.

    HUB-BEARING UNIT FOR A WHEEL OF A MOTOR VEHICLE

    公开(公告)号:US20230331040A1

    公开(公告)日:2023-10-19

    申请号:US18296439

    申请日:2023-04-06

    申请人: AKTIEBOLAGET SKF

    IPC分类号: B60B27/00

    摘要: A hub-bearing unit with an axis of rotation includes a stationary, radially external ring, a radially internal flanged hub, rotatable about the axis and including a first shoulder, a second shoulder, a first relief groove, and a section (SR) radially opposite the first relief groove. At least one row of rolling bodies is interposed between the external ring and the flanged hub. The hub-bearing unit includes a first radial ball bearing and a second radial ball bearing interposed between a stem of a constant velocity joint and the flanged hub and opposite the first shoulder and the second shoulder. The second ball bearing mounts inside a seat of the flanged hub and a spacer axially abuts the second shoulder and mounts inside the seat between the second shoulder and the second ball bearing. The seat includes a second relief groove formed in an axially external position relative to section (SR).