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.

An adjustment device configured to move first bevel gear and second bevel gear that are disposed on base and are meshed with each other. Adjustment device includes first adjustment assembly, and second adjustment assembly. First adjustment assembly includes first fluid-driven power source, first brake component and first displacement sensor. First fluid-driven power source includes first cylinder housing and first piston. First cylinder housing is configured to be disposed on base. First piston is movably disposed on first cylinder housing. First bevel gear is configured to be disposed on first piston. First piston is configured to move first bevel gear along first axial direction. First brake component is configured to be disposed on base and configured to stop or release first piston. First displacement sensor is disposed on first cylinder housing and configured to generate displacement data related to first piston.

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.

A bearing adjustment assembly is provided. The assembly includes a worm engaged with a worm gear. The assembly also includes a worm bearing located proximate an end of the worm. The assembly further includes a spring disposed in a spring bore defined by the housing. The assembly yet further includes a compensation mechanism engaging the worm bearing and the spring, the compensation mechanism being adjustable to bias the worm bearing to maintain or adjust a gear mesh load between the worm gear and the worm, wherein compression of the spring adjusts the compensation mechanism biasing of the worm bearing. The assembly also includes a spring retainer comprising a pin retainer portion disposed within an interior of the spring, the pin retainer portion extending from a main body portion of the spring retainer.

Coaxial gear mechanism, with a toothing system which is oriented axially with regard to a rotational axis of the coaxial gear mechanism; a tooth carrier with axially oriented guides; teeth which are received in the guides for engagement with the toothing system, the teeth being oriented with their respective longitudinal axes axially in the guides and being mounted in the guides such that they can be displaced axially; a cam disc which can be rotated about the rotational axis for the axial drive of the teeth; and a housing, in which a setting element for mounting the cam disc is provided, at least one bearing with rolling bodies being arranged between the setting element and the cam disc.

Coaxial gear mechanism, with a toothing system which is oriented axially with regard to a rotational axis of the coaxial gear mechanism; a tooth carrier with axially oriented guides; teeth which are received in the guides for engagement with the toothing system, the teeth being oriented with their respective longitudinal axes axially in the guides and being mounted in the guides such that they can be displaced axially; a cam disc which can be rotated about the rotational axis for the axial drive of the teeth; and a housing, in which a setting element for mounting the cam disc is provided, at least one bearing with rolling bodies being arranged between the setting element and the cam disc.

A worm reducer has: a housing having a wheel housing portion and a worm housing portion; a worm wheel; a worm, a support bearing having an inner ring externally fitted to the tip end portion of the worm and an outer ring; an elastic biasing means elastically biasing the outer ring toward the worm wheel side; and an elastic holding means elastically holding the outer ring from both sides in a direction orthogonal to a biasing direction by the elastic biasing means and to a center axis of the worm housing portion.

A worm reducer has: a housing having a wheel housing portion and a worm housing portion; a worm wheel; a worm, a support bearing having an inner ring externally fitted to the tip end portion of the worm and an outer ring; an elastic biasing means elastically biasing the outer ring toward the worm wheel side; and an elastic holding means elastically holding the outer ring from both sides in a direction orthogonal to a biasing direction by the elastic biasing means and to a center axis of the worm housing portion.

A gearbox assembly includes a housing, a first shaft assembly having a worm gear and supported relative to the housing by a first bearing assembly, and a second shaft assembly including a wheel gear which is also supported relative to the housing by a second bearing assembly, the wheel gear engaging with the worm of the worm gear to permit the transfer of torque between the two shaft assemblies, wherein the first shaft assembly includes an elongate shaft carrying the worm gear, and a separate dog drive mechanism secured to one end of the elongate shaft by the first bearing such that in use torque is transferred between the elongate shaft and the dog drive mechanism.

Slew drive systems for rotational and axial load bearing, e.g., in applications including satellite-based telecommunications systems, are disclosed herein. In some cases, slew drive systems disclosed herein can improve efficiency, accuracy, and/or reliability of telecommunication systems while reducing the cost and complexity of manufacture. For example, a slew drive system can comprise a threaded plug and a retaining ring in addition to a worm gear, a plurality of tapered roller bearings, and a worm wheel, allowing a significant reduction in material and labor costs of slew drive manufacture, which can be critical in the manufacture of expensive telecommunications system actuator assemblies.