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.

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 transmission with alternating rotary disks is presented. The transmission with alternating rotary disks contains a plurality of first rotary disk assemblies, a plurality of second rotary disk assemblies, a drive shaft, and a gearbox shell. The plurality of first rotary disk assemblies is rotatably connected to the plurality of second rotary disk assemblies, where the plurality of first rotary disk assemblies and the second plurality of disk assemblies are arranged in a specified pattern. The first rotary disk assembly contains a first rotary element that rotates in one direction when the drive shaft is subjected to torque. The second rotary disk assembly contains a second rotary element that rotates in the opposite direction, relative to the first rotary element rotation.

An axle assembly and method of assembly. The axle assembly may include a drive pinion and a preload nut. The drive pinion may have a recess. The preload nut may have a deformable ring. The deformable ring may engage the drive pinion inside the recess to inhibit rotation of the preload nut.

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 vehicle drive device includes: an input shaft that receives a driving force of a driving source and that is provided with a first gear; an intermediate shaft that is provided with a second gear meshing with the first gear and a third gear located next to the second gear in a direction of a rotation axis and that is disposed in such a manner that the intermediate shaft is allowed to move in the direction of the rotation axis; an output shaft that is provided with a fourth gear meshing with the third gear; a first gear pair including the first and second gears; and a second gear pair including the third and fourth gears. One of the first gear pair and the second gear pair includes a helical gear, and the other of the first gear pair and the second gear pair includes a double helical gear.

A gearing includes a housing and a shaft unit.

The housing includes a lower part and an upper part placed on the lower part.

The lower part has at least one, e.g., semi-cylindrical, cut-out, e.g., a bearing holder, for holding the shaft unit.

The upper part has at least one second, e.g., semi-cylindrical, cut-out, e.g., a bearing holder, which together with the cut-out of the lower part forms a complete and/or cylindrical bearing holder.

The shaft unit has a shaft onto which first and second bearings are mounted, the outer rings of which are braced with respect to one another. The shaft unit has first shim washer(s) for adjusting the bracing, e.g., the bearing tension.

The gearing has second shim washer(s) for adjusting the axial position of the shaft unit.

A gearing includes a housing and a shaft unit.

The housing includes a lower part and an upper part placed on the lower part.

The lower part has at least one, e.g., semi-cylindrical, cut-out, e.g., a bearing holder, for holding the shaft unit.

The upper part has at least one second, e.g., semi-cylindrical, cut-out, e.g., a bearing holder, which together with the cut-out of the lower part forms a complete and/or cylindrical bearing holder.

The shaft unit has a shaft onto which first and second bearings are mounted, the outer rings of which are braced with respect to one another. The shaft unit has first shim washer(s) for adjusting the bracing, e.g., the bearing tension.

The gearing has second shim washer(s) for adjusting the axial position of the shaft unit.

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.