An axle assembly with a housing, a shaft received in the housing, a shaft bearing supporting the shaft for rotation relative to the housing about a shaft axis, a differential assembly, an annular band and a secondary retainer. The shaft bearing has an inner race, which is received on and directly engaged to the shaft, and an outer race that is received on and directly engaged to the axle housing. The differential assembly has an output member that is non-rotatably coupled to the shaft. The annular band is fixedly coupled to the shaft at a location along the axle shaft axis between the inner race and the output member. The secondary retainer is disposed along the axle shaft axis between the annular band and the output member and is configured to limit movement of the annular band along the axle shaft axis in a direction toward the output member.

A differential gear for transmitting a torque to an axle of a motor vehicle including a differential basket, a bevel gear, first and second output shafts, and a multi-plate clutch. The bevel gear includes inner and outer circumferential surfaces. The bevel gear is supported by a contact surface of the differential basket with respect to a radial direction. The output shafts have a common rotary axis, the first output shaft forming a positive connection with the bevel gear with respect to a circumferential direction via a outer circumferential surface of the first output shaft and the inner circumferential surface of the bevel gear. The multi-plate clutch provides for selectively connecting the first output shaft with the differential basket and includes an inner plate carried by a section of the outer circumferential surface of the bevel gear and an outer plate carried by the differential basket.

The present invention discloses an electric differential with a torque vectoring function. The electric differential includes: a main drive mechanism; a bevel gear differential; a TV control drive mechanism used for outputting control power; a first single-row planetary gear train, of which a first sun gear is coaxially and fixedly connected with a first half shaft and a first planet carrier is connected with a control output end; a second single-row planetary gear train, of which a second planet carrier is fixed to a drive axle housing, a second gear ring is fixedly connected with a first gear ring and a second sun gear is supported on the first half shaft through a bearing.

A nesting structure supports a differential case. The nesting structure includes a first support structure that supports the differential case. The nesting structure includes a second support structure spaced apart from the first support structure to define a support opening. The support opening receives a first shim and establishes a first orientation between the first shim and the differential case in which the first shim is non-parallel with respect to a first bearing surface of the differential case.

A power transmission system includes a first rotating shaft and a second rotating shaft, a first fastening element including multiple first friction members and rotating integrally with the first rotating shaft, a second fastening element including multiple second friction members and rotating integrally with the second rotating shaft, a frictional engagement portion in which the first fastening element and the second fastening element are alternately stacked in an axial direction, and a pressing member disposed movable in the axial direction and pressing the frictional engagement portion to engage the first friction members and the second friction members with each other. The first fastening element is supported in the axial direction by an internal thrust bearing and an external thrust bearing that have different diameters.

The present invention discloses a high-precision rear-axle reduction gearbox for a scooter, comprising a box body, wherein an inner chamber is formed within the box body, and an opening for communicating the inner chamber with the outside is formed on the box body; a cover for sealing the opening is fitted at the opening of the box body; output shaft hole for allowing an output shaft to pass therethrough and an input shaft hole for allowing an input shaft to pass therethrough are formed on the box body; a driving motor is provided outside the box body; a differential component is provided within the inner chamber of the box body; a driving motor output shaft of the driving motor is linked to an input shaft, and the input shaft is linked to an output shaft via the differential component; and, the opening is relatively located on a radial outer side of the output shaft, and the opening is deviated from the output shaft holes and the input shaft hole.

An axle assembly with a housing, a shaft received in the housing, a shaft bearing supporting the shaft for rotation relative to the housing about a shaft axis, a differential assembly, an annular band and a secondary retainer. The shaft bearing has an inner race, which is received on and directly engaged to the shaft, and an outer race that is received on and directly engaged to the axle housing. The differential assembly has an output member that is non-rotatably coupled to the shaft. The annular band is fixedly coupled to the shaft at a location along the axle shaft axis between the inner race and the output member. The secondary retainer is disposed along the axle shaft axis between the annular band and the output member and is configured to limit movement of the annular band along the axle shaft axis in a direction toward the output member.

A differential device includes: a pinion gear; a pinion shaft for rotatably supporting the pinion gear; a pair of side gears, which engage with the pinion gear and are fitted to a pair of drive shafts; a differential case, which supports the pinion shaft, houses the pinion gear and the side gears, and has an opening on one side of the drive shafts; and a differential cover, which has a hole through which one of the drive shafts penetrates, is fixed to the differential case, and closes the opening. Further, the differential cover has an oil passage which penetrates along the hole from an inner surface facing the side gears to an outer surface opposite to the differential case and through which a lubricating oil flows.

A ball and ramp assembly including a first plate, a second plate and one or more rolling elements between the first and second plates. The first plate includes a shoulder portion that extends from a first side of the first plate. Additionally, the first plate includes an increased diameter portion that extends from an outer surface of the first plate. Extending inward from a second side of the first plate is a receiving portion with a substantially vertical wall portion having one or more non-circular first plate grooves. The second plate has one or more non-circular second plate grooves that extend along a first side of the second plate. The second plate grooves are a reverse mirror image of the first plate grooves. Radially outboard from the shoulder portion is a thrust bearing and integrally connected to the outer surface of the first plate is a first plate gear portion.

A method for forming an axle shaft that includes friction welding a tubular shaft to a shaft portion of a wheel flange. Portions of the joint members on the tubular shaft and the wheel flange are extruded into an annular weld cavity in the wheel flange during the formation of the friction weld. A related axle shaft is also provided.