A wheel carrier assembly (10) of a machine for agricultural use, such as a tractor, has a drive axle (2) and steering wheels. The wheel carrier assembly (10) includes a constant-velocity joint (100) for the connection, upstream, of the wheel carrier assembly (10) to the transmission. The assembly includes, downstream, a rotation shaft (101) for the rotation of the wheel assembly. A disc brake device (200) controls the braking of the wheel assembly. A gear reducer (300), connects to the wheel assembly and to the rotation shaft (101). The disc brake device (200) is operationally connected to the rotation shaft (101) so that the braking action is applied directly on the rotation shaft, upstream of the gear reducer (300).

A modular chassis is provided for an off-road vehicle to improve assembly, servicing, and repairing of a drivetrain of the off-road vehicle. The modular chassis includes a chassis to support components of the off-road vehicle. A front frame module couples with a front of the chassis, and a rear frame module couples with a rear of the chassis. The front frame module supports lower suspension arms of the off-road vehicle by way of inboard bushing joints. The front frame module supports at least a steering gear and a front differential of the off-road vehicle. The rear frame module is a tube-frame structure that supports components of the off-road vehicle. A lower portion of the rear frame module extends rearward and acutely upward to a top frame member that couples with upper side portions of the chassis. Several cross-members impart structural integrity to the rear frame module.

A constant velocity joint for a vehicle. The constant velocity joint includes: an axle housing fixed to a knuckle by a hub bearing, and a joint assembly inserted into the axle housing to transmit power from a shaft to the axle housing through a plurality of joint balls. In particular, the axle housing includes an extension portion which is extended from an end portion of the axle housing in a radial direction of the axle housing, and the extension portion provides a pressing force to an inner race of the hub bearing in an axial direction of the axle housing. The constant velocity joint further includes a boot surrounding an outer side of the extension portion and coupled to the extension portion so as to form a restraining force between the extension portion and the boot in the axial direction.

A kingpin unit bearing steerable drive axle for a powered wheel of a vehicle may include a steering knuckle having a first side and a second side, and a unit bearing configured to support a wheel and operatively connected to the first side of the steering knuckle. An axle housing is operatively connected to the second side of the steering knuckle, and the axle housing has an upper arm and a lower arm. A first kingpin connects the upper arm of the axle housing to the steering knuckle; and a second kingpin connects the lower arm of the axle housing to the steering knuckle. The steering knuckle and the axle housing are configured to receive a powered axle shaft to drive the unit bearing.

A hub built-in type drive axle includes one hub housing assuming a role of an external race of a constant velocity joint and a role of a wheel hub simultaneously, wherein the outboard constant velocity joint center is positioned within the full length of the hub housing, and a structure in which a bear housing and a boot assembly ring, including a boot, do not rotate whether the driveshaft 1 rotates is maintained so that performance may be improved, durability may be enhanced, and noise may be minimized.

A drive axle assembly includes a wheel bearing mounted to an axle housing, a shaft assembly including a first shaft on an inboard side thereof to which a driving force of a power train is transmitted, and a second shaft on an outboard side thereof which is shaft-connected to the inside of the axle housing by a constant-velocity joint and is separably assembled to the first shaft, and a boot assembly including a first end portion fixed to an external ring of the wheel bearing and a second end portion assembled to the shaft assembly to be rotatable relative to the shaft assembly, and configured to restrict rotation of the boot and prevent foreign substances from being introduced therein.

A drive axle (1) and a motor vehicle having the drive axle (1) are proposed. The drive axle (1) includes an axle body (2) in which at least one axle shaft (3) extends. The drive axle (1) has at least one wheel carrier (5), which is arranged on a wheel-side end (4) of the axle body (2), and at least one steering assembly (6). The drive axle (1) is preferably in the form of a rigid axle and the axle body (2) has a receiving structure (7) for accommodating a drive unit (8), and the steering assembly (6) is directly connected to the axle body (2).

An annular element of a wheel hub is provided with a front toothing for transmitting torque and including a plurality of teeth extending radially between a first diameter and a second diameter of the front toothing and having ridges. A first end of the teeth extend to a third diameter of the front toothing at which the teeth have a maximum height and a second end of the teeth extend to a fourth diameter of the front toothing at which the teeth have a minimum height. The ridges each have a section at which the teeth have a straight radial profile and is rounded. A ratio between the third and first diameters is greater than 0.9.

An axle disconnect clutch includes an axle shaft, a tulip for a constant velocity joint, and a sliding sleeve. The sliding sleeve includes a first inner spline and a first outer spline, radially aligned with the first inner spline. One of the axle shaft or the tulip includes a second inner spline, and the other one includes a second outer spline. The sliding sleeve is axially slidable along a one of the first inner spline or the first outer spline to engage the other of the first inner spline or the first outer spline with the second outer spline or the second inner spline, respectively, rotationally connecting the axle shaft and the tulip. In an example embodiment, the sliding sleeve has an undulating profile, and a number of inner spline teeth of the first inner spline is equal to a number of outer spline teeth of the first outer spline.

A leading-edge steering system is provided for a front suspension of an off-road vehicle. The leading-edge steering system is comprised of a spindle assembly that supports a drive axle assembly to conduct torque from a transaxle to a front wheel. A first rod-end joint pivotally couples an upper suspension arm and the spindle assembly, and a second rod-end joint pivotally couples a lower suspension arm and the spindle assembly. A steering rod-end joint pivotally couples a first end of a steering rod with a leading-edge portion of the spindle assembly. A steering gear is coupled with a second end of the steering rod and configured to move the steering rod, such that the spindle assembly rotates with respect to the upper and lower suspension arms. The leading-edge portion is configured to exert primarily tensile forces on the steering rod during travel over rough terrain.