A power take off unit includes an input gear, an output gear, and an intermediary gear that cooperate to transfer power from a rotational power source to an operating target. The power take off unit has a control module that biases the intermediary gear relative to the input gear and the output gear to reduce gear rattle vibrations associated with intermeshed tooth looseness.

A motorcycle drive device includes a shiftable transmission set up to transmit drive power which can be provided by an engine crankshaft toward a drivable wheel. The transmission includes an input shaft having a rotation axis when is displaceable to adjust a spacing between the rotation axes of a primary gearwheel on the transmission input shaft and a primary pinion transferring the drive power from the crankshaft. A transmission input shaft bearing supporting the transmission input shaft is arranged in a bearing plate that is rotatable relative to a housing of the transmission. The bearing plate includes an adjusting mechanism arranged to change the position of the bearing plate with respect to the transmission housing to adjust the axial spacing of the rotation axes.

An electromechanical servo steering system with an electric servomotor having a motor shaft that drives a shaft which cogs with a helical gear. The shaft is arranged in a transmission housing and is mounted rotatably about an axis of rotation at its end near the motor in a bearing arrangement and is mounted pivotably in the transmission housing about a pivot axis which lies transverse to the axis of rotation. At least one spring element is provided which axial pretensions a bearing element that is pivotably movable with the shaft about the pivot axis, of the bearing arrangement in a spring-elastic manner against a bearing element that is arranged in a stationary manner in the transmission housing, of the bearing arrangement, wherein precisely two spring elements are provided which are arranged oppositely in the circumferential direction of the bearing arrangement.

A worm reducer includes a worm shaft; a worm wheel; a housing that houses the worm shaft and the worm wheel; a bearing that holds the worm shaft inside the housing; a coil spring that contacts an outer peripheral surface of the bearing and applies an urging force toward the worm wheel; and a preload member that is screwed into and fixed to the housing and pressurizes the coil spring. A winding direction of the coil spring is different from a winding direction of a thread of the preload member, and contact resistance between the coil spring and the preload member is greater than contact resistance between the coil spring and the bearing.

A steering gear includes a gear wheel, a screw pinion meshing therewith, and a screw pinion shaft that includes the screw pinion. The screw pinion shaft is mounted on one side of the screw pinion in a fixed bearing. The steering gear includes a rotary bearing which comprises an inner bearing shell and an outer bearing shell. The outer bearing shell is connected to an inner ring of a swivel ring. The inner ring is connected to an outer ring of the swivel ring by a torsion web so as to pivot about a pivot axis. The torsion web runs at a distance from a supporting surface. The distance is dimensioned such that the torsion web does not contact the supporting surface when the screw pinion shaft is not loaded with a torque, and partially contacts the same when the screw pinion shaft is loaded with an operating torque.

A method and system for an axle assembly are provided. The axle assembly, in one example, includes a cover at least partially circumferentially surrounding a shaft, a bearing coupled to the shaft and the cover, the bearing including an outer race, and a bearing adjuster including a first axial side adjacent to the outer race and configured to set a bearing preload and/or end play. The assembly further includes a lubricant seal spaced axially away from the bearing adjuster and sealing a lubricant bore and the lubricant bore traverses the cover and extends axially toward the bearing adjuster.

An aspect of the present invention provides a speed reducer including a supporting block, an input gear rotatably supported on the supporting block, an intermediate gear meshing with the input gear, an output gear meshing with the intermediate gear, and a gear position changing mechanism configured to change a position of the intermediate gear relative to the input and output gears.

A two-stage actuating gear mechanism comprises a spur gear transmission as the first transmission stage and a harmonic drive as the second transmission stage. A spur gear transmission gear with inward facing teeth is designed simultaneously as a component of a harmonic generator of the harmonic drive. A gear with outward facing teeth that meshes with the gear with inward facing teeth is rigidly connected to a rotor of an electric motor, the motor housing of which is secured to the transmission housing of the harmonic drive. The motor housing is positioned relative to the transmission housing by means of a centering device which is eccentric to the rotational axis (A.sub.E) of the rotor. An adjustable backlash between the gear with outward facing teeth and the gear with inward facing teeth is provided by a pivoting capability between the motor housing and the transmission housing.

Power takeoff devices (PTOs) are useful for mounting on transmissions and for performing, directly or indirectly, useful work via the mechanical energy generated by the PTO's rotatable output shaft. Systems and methods for reducing PTO gear rattle include a moveable input gear engaging and intermediate to an output gear and a transmission gear. The input gear is carried on an input gear carrier moveable such that the input gear centerline moves along a plane substantially perpendicular to a plane running between the centerlines of the output and transmission gears. The input gear travel is limited by the output and transmission gears such that the input gear is biased to engage at least one of the output gear and the transmission gear, thereby reducing or eliminating gear rattle from overly loose engagement between meshing teeth on the input gear and the transmission gear or output gear.

The invention relates to a worm drive comprising a worm shaft and a first receiving unit. The worm shaft is rotatably mounted in the first receiving unit. Furthermore, the worm drive comprises a worm wheel and a second receiving unit. The worm wheel is rotatably mounted in the second receiving unit. The first receiving unit is arranged on the second receiving unit and the rotatably mounted worm shaft is in contact with the worm wheel of the second receiving unit in order to transmit a torque. Furthermore, the worm drive comprises guide pins for detachably connecting the first receiving unit to the second receiving unit. More particularly, the first receiving unit receives at least part of the guide pins and the second receiving unit is connected to one of the guide pins, preferably to a first end of the guide pin. A spring element is arranged on a second end of the guide pin between the first receiving unit and a fastening means.