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.

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 power transmission device according to one aspect of the disclosure includes a first gear, a base member, a second gear, a support block, a position adjusting unit, and a fixing unit. The base member rotatably supports the first gear. The second gear engages with the first gear so as to be able to transmit power. The support block rotatably supports the second gear. The position adjusting unit adjusts relative positions of the support block and the base member in a direction in which an engagement depth between the second gear and the first gear varies. The fixing unit fixes the relative positions of the support block and the base member.

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.

An electromechanical power steering system may include an electric servomotor that has a motor shaft and drives a shaft that meshes with a helical gear. The shaft is disposed in a gearbox housing and rotatably mounted in a bearing assembly. A pretensioning installation, for adjusting engagement between the helical gear and the shaft, resiliently pretensions a movable bearing element of the bearing assembly relative to the gearbox housing. The gearbox housing has a housing portion having first and second contact faces, the normals of which do not intersect. The bearing assembly has a bearing support that forms the movable bearing element and has a lever arm having a free end that extends from a main body of the bearing support and on the gearbox housing lies against the second contact face. The main body has an eccentric cam that on the housing lies against the first contact face.

A worm shaft includes: an insertion portion; a wall surface; a tapered portion; and a main body portion, the gear portion is formed on the main body portion and the tapered portion such that a bottom land of the gear portion is positioned at radially outer side of a line extending in parallel with a rotation center axis of the worm shaft and passing through a boundary between the wall surface and the tapered portion.

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.

An electric power steering system with a worm gear includes a worm shaft and a worm wheel, wherein an electric motor is associated with the worm shaft, which is connected to the worm shaft in a force-transmitting manner. A bearing element, arranged on the worm shaft at the end of the worm shaft facing away from the electric motor, is received in a guide bush, wherein the guide bush has, on its circumferential side, a passage opening. It is provided a pre-tensioning device comprising a spring-loaded actuator element extending through the passage opening of the guide bush and acting on the worm shaft in the direction of the worm wheel with a defined pre-tensioning force (K), wherein the pre-tensioning device comprises a limiting device which is adapted to limit a pivoting movement that displaces the worm wheel away from the worm shaft. Furthermore, it is proposed a method for the production of steering systems and a test system for performing the method.

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.

A power steering assembly is provided. The power steering assembly may include a housing, a first bearing, a second bearing, a worm, and a worm gear. The first bearing is disposed within the housing and defines a first central axis. The second bearing is disposed within the housing and defines a second central axis offset from the first central axis. The first bearing and the second bearing are arranged with the housing such that the second bearing is movable to align the first central axis with the second central axis responsive to a load applied to the second bearing.