Abstract: Transmission group for vehicles comprising an engine provided with at least one engaging device, arranged between transmission gears and mobile between a first rest position, wherein the transmission gears are mutually integral and both in mesh with a transmission shaft, and a second working position wherein the first gear is in mesh with the transmission shaft and the second gear is unconstrained both with respect to the transmission shaft and with respect to the gear, provided for being means for actuating of the engage device, wherein the engine, the output gear and an output shaft are integrated in a first module fixed to the vehicle and that the transmission shaft, the transmission gears, the engage device and the actuating means thereof are integrated in a second module independent and demountable with respect to the first module.

Abstract: A drive assembly having an actuating piston for generating a thrust for engagement of a clutch unit. The assembly also has a bearing for transferring the engagement thrust and a pusher for discharging the engagement thrust onto the clutch unit. The actuating piston, the bearing and the pusher are assembled in succession on a transmission shaft carrying the clutch unit. A chamber is provided for supplying a fluid under pressure for generating a disengagement thrust acting on the actuating piston. At least one preloaded spring is provided that acts on the actuating piston so as to push it towards the clutch unit. The bearing for transferring the thrust is mounted with play directly on the transmission shaft. The pusher being disk-shaped and comprising a first face in lateral contact with the bearing and a second face in lateral contact with the clutch unit.

Abstract: A drive assembly having an actuating piston for generating a thrust for engagement of a clutch unit. The assembly also has a bearing for transferring the engagement thrust and a pusher for discharging the engagement thrust onto the clutch unit. The actuating piston, the bearing and the pusher are assembled in succession on a transmission shaft carrying the clutch unit. A chamber is provided for supplying a fluid under pressure for generating a disengagement thrust acting on the actuating piston. At least one preloaded spring is provided that acts on the actuating piston so as to push it towards the clutch unit. The bearing for transferring the thrust is mounted with play directly on the transmission shaft. The pusher being disk-shaped and comprising a first face in lateral contact with the bearing and a second face in lateral contact with the clutch unit.

Abstract: An electronic differential lock assembly includes a shift collar that is movable in response to an electronic signal from an unlocked position where axle shaft speed differentiation under predetermined conditions is permitted to a locked position where a pair of axle shafts is fixed for rotation together. Speed differentiation is provided by a differential that includes a differential gear assembly supported within a differential case. A coil surrounds the shift collar and is selectively energized to move the shift collar from the unlocked position to the locked position. The shift collar is splined to one of the axle shafts and is selectively splined to the differential case to lock the axle shafts together. The electronic differential lock assembly includes a return spring that automatically disengages the shift collar from the differential case once the coil is no longer energized.

Abstract: Transmission group for vehicles comprising an engine provided with at least one engaging device, arranged between transmission gears and mobile between a first rest position, wherein the transmission gears are mutually integral and both in mesh with a transmission shaft, and a second working position wherein the first gear is in mesh with the transmission shaft and the second gear is unconstrained both with respect to the transmission shaft and with respect to the gear, provided for being means for actuating of the engage device, wherein the engine, the output gear and an output shaft are integrated in a first module fixed to the vehicle and that the transmission shaft, the transmission gears, the engage device and the actuating means thereof are integrated in a second module independent and demountable with respect to the first module.

Abstract: An electronic differential lock assembly includes a shift collar that is movable in response to an electronic signal from an unlocked position where axle shaft speed differentiation under predetermined conditions is permitted to a locked position where a pair of axle shafts are fixed for rotation together. Speed differentiation is provided by a differential that includes a differential gear assembly supported within a differential case. A coil surrounds the shift collar and is selectively energized to move the shift collar from the unlocked position to the locked position. The shift collar is splined to one of the axle shafts and is selectively splined to the differential case to lock the axle shafts together. The electronic differential lock assembly includes a return spring that automatically disengages the shift collar from the differential case once the coil is no longer energized.

Abstract: An electronic differential lock assembly includes a shift collar that is movable in response to an electronic signal from an unlocked position where axle shaft speed differentiation under predetermined conditions is permitted to a locked position where a pair of axle shafts is fixed for rotation together. Speed differentiation is provided by a differential that includes a differential gear assembly supported within a differential case. A coil surrounds the shift collar and is selectively energized to move the shift collar from the unlocked position to the locked position. The shift collar is splined to one of the axle shafts and is selectively splined to the differential case to lock the axle shafts together. The electronic differential lock assembly includes a return spring that automatically disengages the shift collar from the differential case once the coil is no longer energized.

Abstract: An electronic differential lock assembly includes a shift collar that is movable in response to an electronic signal from an unlocked position where axle shaft speed differentiation under predetermined conditions is permitted to a locked position where a pair of axle shafts are fixed for rotation together. Speed differentiation is provided by a differential that includes a differential gear assembly supported within a differential case. A coil surrounds the shift collar and is selectively energized to move the shift collar from the unlocked position to the locked position. The shift collar is splined to one of the axle shafts and is selectively splined to the differential case to lock the axle shafts together. The electronic differential lock assembly includes a return spring that automatically disengages the shift collar from the differential case once the coil is no longer energized.

Abstract: A differential carrier assembly includes a differential carrier and a differential casing having a ring gear that is supported on right and left differential bearings for rotation about a differential axis. The right and left differential bearings are each supported in respective right and left bearing housings. A pinion having a pinion gear meshes with the ring gear and includes a spigot positioned on a differential axis side of the pinion gear. The spigot is supported in a spigot bearing, and the spigot bearing is supported in a spigot bearing housing. One of the right or left bearing housings and the spigot bearing housing are formed on a common component which is separate from and securable to the differential carrier.