A planetary gear system with a planetary carrier and a plurality of planetary gearwheels which are mounted on the planetary carrier by way of planetary gear bolts and planetary bearings. Each planetary gear bolt has at least one bore for supplying the planetary bearings with lubricating oil. The at least one bore is associated with an oil-catching element of a component fixed onto the planetary carrier, and the component is designed, in addition, to be a pulse generator for a rotational speed sensor. The pulse generator has a plurality of raised areas which are arranged around the circumference of the component and which extend in the axial direction.

A motor vehicle drive-axle includes a drive-axle housing defining a gear-set cavity and a shaft bore having first and second bearing pockets and an oil cavity arranged between the first and second bearing pockets. The housing also defines a supply channel and a return passage configured to respectively supply oil from the gear-set cavity to the oil cavity and return oil from the oil cavity to the gear-set cavity. The housing also includes an input shaft extending through the shaft bore into the differential gear-set cavity. The housing additionally includes first and second bearings arranged within respective first and second bearing pockets for supporting the input shaft. The housing additionally includes a lubrication regulating insert arranged inside the oil cavity. The insert defines first and second lubrication channels configured to direct oil from the supply passage to respective first and second bearings.

The invention relates to a lubricating oil deflector for a speed reduction gear of a turbomachine, the deflector comprising a body having a first end intended to be disposed facing a sun gear of the reduction gear, the first end being configured to receive oil from the sun gear and an opposite second end configured to discharge the oil from the body, the body including two side faces each intended to be disposed facing a planet gear of the reduction gear and each connecting the first and second ends together, the body including at least one inner oil guide channel that opens out at the first end and at the second end and is configured to discharge the oil by gravity through the second end.

Systems and methods for cooling power transmission systems are include providing oil through an aperture defined in a housing to a stator cooling ring, through the stator cooling ring and into stator cooling channels, through the stator cooling channels and into spaces defined between the housing and jet rings, and through holes in the jet rings and onto the end-windings. The stator cooling ring, stator cooling channels and jet rings can encircle the stator and end-windings and, via the holes in the jet rings, spray pressurized jets of oil from various angles onto the end-windings, and in particular middle regions thereof. Seals may be used between the jet rings and housing, and between the jet rings and stator ends. The seals may be compressed so as to form an interference fit between the jet rings and housing or stator ends as the case may be.

An arrangement includes a structure fixed to a housing, a bearing, and a planet carrier rotatably supported in the structure fixed to the housing via the bearing and an oil feedthrough ring. The oil feedthrough ring forms a lubricant-conducting connection between the structure fixed to the housing and the planet carrier. The structure fixed to the housing, the oil feedthrough ring, the bearing and the planet carrier together form a first cavity. The planet carrier forms at least one lubricant line which opens into the first cavity.

A method of assembling an epicyclic gear train includes positioning a carrier, the carrier being a unitary structure with side walls and mounts unitary with one another, inserting intermediate gears through a central opening of the carrier, moving each of the intermediate gears into intermediate gear pockets, inserting baffles into the carrier, inserting a sun gear through the central opening, and moving the intermediate gears to intermesh with the sun gear, and moving a ring gear into engagement with the intermediate gears.

In a strain wave gearing device, fine first and second lubricant-holding grooves for holding lubricant are formed at fine pitches in an outer-race external peripheral surface of a wave generator bearing and an outer-race-contacting internal peripheral surface portion of an externally toothed gear in contact therewith. Fine lubricant-guiding grooves for guiding the lubricant to the outer-race-contacting internal peripheral surface portion are formed at fine pitches in a second internal peripheral surface portion, which adjoins the outer-race-contacting internal peripheral surface portion, of an internal peripheral surface of the externally toothed gear. This configuration improves the contact state between the outer-race-contacting internal peripheral surface portion of the externally toothed gear and the outer-race external peripheral surface, thus suppressing fretting wear occurring in these surfaces.

A gear system includes a carrier having a first portion and a separate, second portion and a plurality of pin shafts extending from the first portion of the carrier. Each of the plurality of pin shafts includes a first end and a second end. As such, the first ends are integrally formed with the first portion of the carrier. The first and second portions are arranged on opposing sides of the plurality of pin shafts and are spaced apart such that the first and second portions do not contact each other. Further, the second portion of the carrier defines an end plate that is secured to the second ends of the plurality of pin shafts. The gear system also includes a plurality of gears mounted to the plurality of pin shafts, with each of the plurality of gears arranged so as to rotate around one of the plurality of pin shafts.

A planetary gearbox of a gas turbine engine has a planet gear which, via a bearing, is arranged rotatably on a planet pin of a rotatable planet carrier. Oil is introduced through an opening, arranged radially within the bearing, into an oil feed which is open at a feed side and which is connected to the bearing and rotationally joined to the carrier. As the carrier rotates, the oil downstream of the opening is conducted toward the bearing unit by centrifugal force. The open oil feed is, between the opening and the bearing, configured an oil filter through which the oil is conducted. The filter extends counter to the flow direction of the oil from the opening in the direction of the bearing unit, in a flow direction of the oil in the open oil feed.

A swing drive for rotating a component of a work vehicle. The swing drive has an electric machine rotating an output shaft about a drive axis and having a planetary set disposed beneath the electric machine. The planetary set has a carrier with pinion shafts having oil passageways therethrough. A splash plate is disposed axially between the electric machine and the planetary set to direct lubricating oil from a face of the electric machine to the oil passageways of the pinion shafts and to direct lubricating oil from the face of the electric machine around the oil passageways. A drive gear is driven to rotate about the drive axis by the electric motor via the double planetary set.