A track work vehicle includes an axle input shaft defining a first axis of rotation, and a differential gear case having at least one planetary gear set. The track work vehicle includes a track drive system contained, at least in part, in the differential gear case. The track drive system includes a first gear coupled to the axle input shaft and a second gear coupled to the first gear. The track drive system includes a bevel gear assembly coupled to the second gear and a bevel gear set coupled to the planetary gear set. The track work vehicle includes at least one drive axle coupled to the planetary gear set and a drive wheel for driving a continuous ground-engaging track. The drive axle has a second axis of rotation that is vertically offset from the first axis of rotation and substantially coaxial with a centerline of the drive wheel.

A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a passageway configured to permit fluid to drain back into a bearing compartment. The passageway has an inlet outside the bearing compartment and an outlet inside the bearing compartment. The outlet is spaced-apart from a central rotational axis of a towershaft gear.

A torsional fuse in a drivetrain system, an epicyclic gear system, and a method of operating a drivetrain system are provided. The epicyclic gear system includes a housing, a shaft configured to rotate relative to the housing, a sun gear being disposed concentric to the shaft, a plurality of planet gears disposed around the sun gear, a ring gear disposed around the plurality of planet gears, a carrier connecting the plurality of planet gears, and a torsional fuse defined by an interface between a first torsional fuse portion and a second torsional fuse portion, the torsional fuse being configured to allow rotation between the first torsional fuse portion and the second torsional fuse portion upon application of a threshold torque at the torsional fuse.

A gas turbine engine according to an example of the present disclosure includes, among other things, a fan section including a turbo fan supported on a turbo fan shaft, a turbine section including a turbine shaft, and an epicyclic gear train interconnecting the turbo fan shaft and the turbine shaft. The epicyclic gear train includes a sun gear coupled to the turbine shaft, intermediary gears arranged circumferentially about and meshing with the sun gear, a carrier supporting the intermediary gears, and a ring gear including first and second portions each having an inner periphery with teeth, the first and second portions arranged about and intermeshing with the intermediate gears, the first and second portions abutting one another at a radial interface, the first and second portions including respective flanges extending along the radial interface radially outward from the teeth, and the teeth of the first and second portions being oppositely angled teeth.

An in-wheel motor vehicle drive device includes an electric motor driving a drive gear, and the drive gear provided with a gear portion configured to receive drive force of the drive gear and a first wall surface extending along a direction orthogonal to an extending direction of a rotation center axis of the gear portion, the first wall surface for forming a pump chamber. The in-wheel motor vehicle drive device further includes a hub configured to transmit the drive force to the wheel, and an oil pump driven by the electric motor. The oil pump includes an oil pump cover including a second wall surface facing the first wall surface of the pump chamber, and a pump rotator arranged at a space between the first wall surface of the driven gear and the second wall surface of the oil pump cover, the pump rotator integrally rotating with the driven gear.

An epicyclic gear train for a gas turbine engine according to an example of the present disclosure includes, among other things, a gutter having an annular channel, a sun gear rotatable about an axis, intermediary gears arranged circumferentially about and meshing with the sun gear, a carrier supporting the intermediary gears, and a ring gear arranged about and intermeshing with the intermediary gears, the ring gear having an aperture axially aligned with the annular channel. The ring gear includes axially spaced apart walls that extend radially outward to define a passageway, and the passageway is arranged radially between the aperture and the annular channel such that the walls inhibit an axial flow of an oil passing from the aperture toward the annular channel.

A sensor device includes: a main driving gear; a driven gear meshed with the main driving gear; a support member that rotatably supports the driven gear; and a substrate on which a rotational angle sensor is mounted. A lubricant is applied to teeth of the driven gear. The driven gear, the support member, and the substrate are stacked in this order from an upper side toward a lower side in a direction of gravitational force with the sensor device attached to an attachment target. A part or all of a surface of the support member on a side of the driven gear is inclined with respect to a direction that is orthogonal to the rotary shaft so as to lead the lubricant to an end portion of the support member on an outer side with respect to the substrate.

The invention relates to the lubrication of a planet-carrier for a mechanical reduction gear of a turbine engine, in particular of an aircraft, said planet-carrier comprising a cage defining an internal housing intended to receive a central sun gear with an axis of rotation X, and an annular row of planet gears arranged around the sun gear, said cage comprising two annular walls that are radial with respect to said axis X, and connected to one another at their outer periphery by a cylindrical wall of axis X, at least one of these radial walls comprising orifices for mounting the axes of said planet gears, and the cylindrical wall comprising through-holes for the passage of the gearings of the planet gears so that they may engage with a gearing of the ring gear, which is intended to extend around the planet gears and the cage.

The present disclosure is related to a transmission for a powered vehicle. The transmission includes a housing defining an interior of the transmission and a fluid supply portion disposed in the housing. The fluid supply portion is configured to supply fluid throughout the transmission. The transmission also includes a first fluid circuit disposed within the housing and defining a first fluid path in fluid communication with the fluid supply portion. A second fluid circuit fluidly defines a second fluid path in fluid communication with the fluid supply portion. The transmission further includes a coupling mechanism for fluidly coupling the first fluid circuit and second fluid circuit, wherein the second fluid circuit is disposed outside the housing of the transmission.

A turbine engine mechanical reduction gear, for example, of an aircraft, the reduction gear comprising: a sun gear having an axis of rotation; a ring gear which extends around the sun gear and which is configured to be immobile in rotation about the axis; planetary gears which are meshed with the sun gear and the ring gear and which are supported by a planetary carrier which is configured to be mobile in rotation about the axis; at least one lubrication oil distributor which comprises a stator portion immobile in rotation and a rotating integral rotor portion of the planetary carrier; and an annular oil deflector which is integral with the ring gear, wherein the stator portion of the distributor is integral with the deflector.