A differential is-made without gears in the satellites and planetaries, in the planetary shafts elliptical tracks are obtained on the fronts and on the circumferences of the shafts, the shape of the tracks is semi-spherical or semi-cylindrical and requires the profile of half spheres or half rollers to roll tangentially within the tracks for a part of their circumference, the balls or rollers being constrained partly in the tracks, partly in the translators and, sometimes, partly in the cylinder and otherwise in the cross that divides the two shafts. The whole is contained by the cylinder in which the longitudinal seats are dedicated to the translators and the spheres that drag the balls or rollers. This cylinder can also be composed of two parts joined at the center to block the cross. In some cases, inside the shafts a bilateral locking and unlocking solenoid (SBL) is installed.

A differential is-made without gears in the satellites and planetaries, in the planetary shafts elliptical tracks are obtained on the fronts and on the circumferences of the shafts, the shape of the tracks is semi-spherical or semi-cylindrical and requires the profile of half spheres or half rollers to roll tangentially within the tracks for a part of their circumference, the balls or rollers being constrained partly in the tracks, partly in the translators and, sometimes, partly in the cylinder and otherwise in the cross that divides the two shafts. The whole is contained by the cylinder in which the longitudinal seats are dedicated to the translators and the spheres that drag the balls or rollers. This cylinder can also be composed of two parts joined at the center to block the cross. In some cases, inside the shafts a bilateral locking and unlocking solenoid (SBL) is installed.

An axle assembly having an input shaft, an output shaft, and an interaxle differential unit. The interaxle differential unit includes first and second side gears, a case, and a pinion gear that is rotatably disposed on a pinion pin. The case extends from the input shaft. The pinion pin extends from the case and is spaced apart from the input shaft.

An axle assembly having an input shaft, an output shaft, and an interaxle differential unit. The interaxle differential unit includes first and second side gears, a case, and a pinion gear that is rotatably disposed on a pinion pin. The case extends from the input shaft. The pinion pin extends from the case and is spaced apart from the input shaft.

A first abutting surface, a first welding surface, a first facing surface are formed in a differential case. A second abutting surface, a second welding surface, and a second facing surface are formed in a differential ring gear. In an installing step, the first abutting surface and the second abutting surface are inserted, positions of the differential case and the differential ring gear are determined in an axial direction, a separation portion that spaces the first welding surface and the second welding surface away from each other and that has a non-linear portion is formed, and a void is formed between the first facing surface and the second facing surface. In a welding step, a laser is irradiated to the separation portion and the first welding surface and the second welding surface are welded.

A first abutting surface, a first welding surface, a first facing surface are formed in a differential case. A second abutting surface, a second welding surface, and a second facing surface are formed in a differential ring gear. In an installing step, the first abutting surface and the second abutting surface are inserted, positions of the differential case and the differential ring gear are determined in an axial direction, a separation portion that spaces the first welding surface and the second welding surface away from each other and that has a non-linear portion is formed, and a void is formed between the first facing surface and the second facing surface. In a welding step, a laser is irradiated to the separation portion and the first welding surface and the second welding surface are welded.

An axle assembly having an input shaft, an output shaft, and an interaxle differential unit. The interaxle differential unit includes first and second side gears, a case, and a pinion gear that is rotatably disposed on a pinion pin. The case extends from the input shaft. The pinion pin extends from the case and is spaced apart from the input shaft.

An axle assembly having an input shaft, an output shaft, and an interaxle differential unit. The interaxle differential unit includes first and second side gears, a case, and a pinion gear that is rotatably disposed on a pinion pin. The case extends from the input shaft. The pinion pin extends from the case and is spaced apart from the input shaft.

A differential with a clutch is provided with: a differential gear set; a dividable casing defining a chamber accommodating the clutch and the differential gear set; a first member of the casing formed in a unitary body and including an end wall having a window penetrating the end wall, a boss portion projecting axially outward from the end wall, a side wall around the axis and a flange extending radially outward for receiving the torque; a second member of the casing fixed with the side wall to close the chamber; an axially movable clutch member axially movable including a leg portion disposed in the window and transmitting the torque from the end wall to the differential gear set; and an actuator having an axially outward offset from the flange and including a plunger abutting on the leg portion and driven axially by the actuator to thrust the clutch member.

A sensor assembly configured for use with a locking differential received in a differential case includes a sensor housing, a switch element and a sense element. The sensor assembly is configured to determine a position of an armature in relation to a stator. The armature moves relative to the stator between engaged and disengaged positions corresponding to the locking differential being in a locked and unlocked state. The sensor housing is coupled relative to the differential case of the locking differential. The switch element is disposed in the sensor housing. The sense element moves with the armature. The sensor assembly is configured to change state based on a position of the sense element.