A turbo fan engine includes a housing that supports a compressor section. At least one compressor hub is within the compressor section. A compressor shaft is arranged in the compressor section. An epicyclic gear train is coupled to the compressor shaft. At least one compressor hub and the compressor shaft are coupled at a common attachment point. The epicyclic gear train includes a carrier. A sun gear and intermediate gears are arranged about and intermeshing with the sun gear. The intermediate gears are supported by the carrier. A baffle is supported relative to the carrier and includes a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubricant on at least one of the sun gear and the intermediate gears.

Provided is a flow path structure of a power transmission device which is capable of removing gas from a lubricating fluid guided to a fluid reservoir while suppressing an increase in a size of the entire power transmission device. A gasket (63) has an extending portion which extends toward an inside of a transmission case (31). A flow path (70) which extends from an upper portion to a lower portion and guides lubricating oil discharged from a discharge mechanism (64) to an oil reservoir is formed inside the transmission case (31) using the extending portion. The discharge mechanism (64) discharges the lubricating oil toward an inner surface of the flow path (70).

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, and 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 lubrication system of a transmission includes a plurality of oil passages formed in an upper portion of a transmission case and supplied with churning oil, a plurality of oil outlets branched from respective oil passages formed in the transmission case and allowing oil supplied from the oil passages to free-fall, and an oil collecting portion formed at an interior of the case wall between the gear case and the motor case. In particular, the oil collecting portion collects oil free-falling from at least one oil outlet branched from at least one oil passage at the gear case, through a through-hole formed at a case wall of the gear case, and then supplies the collected oil to an exterior lubrication portion.

An axle assembly includes at least one axle. An axle housing having a center portion and at least one arm portion that extends from the center portion is provided: The at least one arm portion receives the at least one axle. A conduit assembly directs lubricant from the center portion to the at least one arm portion. The conduit assembly includes one or more restrictions that impede a flow of the lubricant in the conduit assembly.

A motor with speed reduction mechanism is provided with an anti-scattering cover 80 for grease, which holds grease applied to a mating part MT where a worm 36b and a worm wheel 40 are in engagement with each other, the anti-scattering cover 80 for grease is provided and closer to an opening 32c than the worm wheel 40 along an axial direction of the worm wheel 40. The anti-scattering cover 80 for grease has: a first wall 81 extending from the opening 32c toward a bottom 32a and formed between the worm 36b and a side wall 32b of a speed reduction mechanism housing unit 32; and a second wall 82 extending in a direction intersecting with the first wall 81 and covering the mating part MT from the same side as the opening 32c along the axial direction of the worm wheel 40. The first wall 81 and the second wall 82 of the anti-scattering cover 80 for grease hold grease attached to the worm 36b, thereby preventing exhaustion of grease applied to the mating part MT where worm 36b and the worm wheel 40 are in engagement with each other.

A gear unit includes a housing, a trough for guiding oil and reducing losses due to splashing surrounding a circumferential section of a toothing part, the trough including at least three parts, e.g., at least one bottom plate and two side walls, the bottom plate being screw-connected to the two side walls, the trough being fastened to the housing, the trough having an opening, the bottom plate and the side walls being stamped bent parts.

A device for providing a transmission with a lubricant or for oil-cooling a piston in the engine of a motor vehicle, comprising a lubricant- or oil-distribution pipe having at least one injection pipe branching off therefrom for delivering the lubricant or the oil to the respective components of the transmission or the engine, and a method for producing same.

A worm reducer 1, in which at least one of an upper surface part or a lower surface part of a housing includes a protruding part 20 protruding toward a worm wheel 60; and with respect to an imaginary line L1 extending parallel to the rotation axis C2 of a worm gear 50 and passing through the central axis of a shaft 71 in the housing, a protruding part 20 is provided between an imaginary line L1 and a meshing part E between the worm gear 50 and the worm wheel 60 in a plan view, and includes an inclined part 21 that inclines toward the meshing part E.

A strain wave gear system (10) includes first and second sets of ball bearings (80, 82) located intermediate a flange (84) and a retainer plate (88) rotatable with an output (54) and a radially oriented flat disc (74) of the input including strain relief (76). Strain relief (76) is a helical slot in a coupling (70) located radially within the wave generator (94) and the ring gear (22). The ring gear (22) is sealed by a sealing system including sealant (42) forced by a protrusion (34) of the cap (24) entering into a cavity (36) through a channel (40) into a relief volume (38) of the housing (12). The bearing (48) rotatably mounting the housing (12) to the output (54) is lubricated by a lubricating system including plungers (110) threadably received in axial bores (102) intersecting with radial bores (104) in communication with radial holes (47) of the bearing (48).