A tone wheel assembly includes a tone wheel. A first member is attached to the tone wheel. A second member is at least partially disposed around a portion of the first member. The second member includes a collar portion, one or more first leg portions extending axially from the collar portion, and one or more second leg portions extending axially from the collar portion. The one or more first leg portions include a first leg portion protuberance that extends radially from an outer surface of the one or more first leg portions. The one or more second leg portions include a second leg portion protuberance that extends radially from an outer surface of the one or more second leg portions.

A lubrication system for an in-wheel motor powertrain is proposed. The system includes a housing having a motor and supporting a wheel, and having a space therein; an input gear and an output gear provided in the housing; two intermediate gears each provided with a first gear meshed with the input gear, and a second gear meshed with the output gear and having a pitch circle diameter different from that of the first gear, the first and second gears being integrally and concentrically coupled together; a pump gear meshed with the input gear; a bearing plate rotatably supporting the input gear, the output gear, and the intermediate gears; a cover plate configured to provide a part of a lubrication pump driven by the pump gear; and a first oil supply part provided by the cover plate and a mid-plate to lubricate the output gear and the intermediate gears.

An electric vehicle includes a chassis, a rigid axle housing, and a suspension system control arm coupling the rigid axle housing to the chassis. The electric vehicle also includes first and second electric motors, each having a rotator and a stator. The stator of the first and second electric motors are rigidly fixed to the rigid axle housing. The electric vehicle also includes a coolant supply system coupled to a radiator and the rigid axle housing to supply coolant from the radiator to a coolant inlet of the rigid axle housing and to supply used coolant from a coolant outlet of the rigid axle housing to the radiator. A first mounting bracket is fixed to the chassis and the coolant supply system. A second mounting bracket is fixed to the rigid axle housing and the coolant supply system, and a third mounting bracket is fixed to the control arm and the coolant supply system.

A wheel drive apparatus of an automated guide vehicle (AGV) is provided, which includes: a bogie frame; drive frames including a pair of drive wheels installed so that power is transmitted through opposite side surfaces of the bogie frame, and first auxiliary wheels opposite to second auxiliary wheels, with a gap “b” outside of each of the opposite side surfaces of the bogie frame; rotation shaft portions pivotally coupled at shaft points of each of the drive frames and the bogie frame; and connection portions in which first connection arms are respectively formed in the drive frames, and second connection arms are respectively formed in the bogie frame, and the first and second connection arms are vertically connected as a slip rod so as to move up and down at a predetermined gap “a”, and thus which does not cause the drive wheel to float in the air even if any of the auxiliary wheels or any of the drive wheels of the AGV travelling along the floor contacts a depression, a barrier and a slope. (Representative drawing: FIG. 1)

An axle assembly having a drop gear set and a countershaft transmission. The drop gear set may operatively connect a rotor of an electric motor to a countershaft. The countershaft transmission may operatively connect the countershaft to a drive pinion. The electric motor and the countershaft transmission may be positioned on opposite sides of a differential assembly.

A track work vehicle includes an axle input shaft defining a first axis of rotation, and a differential gear case having at least one planetary gear set. The track work vehicle includes a track drive system contained, at least in part, in the differential gear case. The track drive system includes a first gear coupled to the axle input shaft and a second gear coupled to the first gear. The track drive system includes a bevel gear assembly coupled to the second gear and a bevel gear set coupled to the planetary gear set. The track work vehicle includes at least one drive axle coupled to the planetary gear set and a drive wheel for driving a continuous ground-engaging track. The drive axle has a second axis of rotation that is vertically offset from the first axis of rotation and substantially coaxial with a centerline of the drive wheel.

A powered axle for a work vehicle with a dual wheel arrangement includes an axle housing, an axle hub mounted to the axle housing, and an output hub having opposite axial ends supported by one or more wheel bearings for rotation about the axle hub along a rotation axis. An electric drive is disposed, at least in part, within the axle housing, and a hub gear set is disposed, at least in part, within the axle hub and configured to transmit power from the electric drive to the output hub for rotation of the dual wheel arrangement. A wheel brake disposed radially between the axle hub and the output hub and axially between the ends of the output hub is configured to selectively permit and arrest rotation of the output hub.

An in-wheel motor powertrain includes an input gear directly connected to a motor; an output gear disposed parallel to the input gear; an intermediate gear integrally and concentrically provided with a first gear meshed with the input gear and a second gear meshed with the output gear having a pitch circle diameter different from that of the first gear; a planetary reduction mechanism of which one of three rotating elements is concentrically connected to the output gear and another one of the three rotating elements is connected to a wheel hub.

An axle assembly having an electric motor module, a drive pinion, and at least one rotor bearing assembly. The electric motor module may have a rotor. The rotor and the drive pinion may be rotatable about a first axis. The first rotor bearing assembly may extend between the drive pinion and the rotor.

A plunging assembly of a driveshaft includes: an outer housing having a bore having a plurality of outer ball grooves extending in a longitudinal direction; an inner shaft being disposed to be able to undergo relative movement in the longitudinal direction in the bore of the outer housing and having a plurality of inner ball grooves that are paired respectively with the outer ball grooves to form a plurality of ball tracks; a plunging unit connecting the outer housing and the inner shaft to allow a plunging motion and a rotational power transmission between the outer housing and the inner shaft; and a stopper that is provided in the bore of the outer housing to limit relative movement of the inner housing and the inner shaft in a direction in which the inner shaft is inserted into the bore. The outer housing has a mounting hole communicating with the bore, and the stopper is a plug member that is inserted into the mounting hole in a state that a frontal end portion thereof is exposed to the bore.