Abstract: An oil collecting bushing for a bearing. The bushing is used for guiding lubricating oil into a roller path of a bearing, and includes a cylindrical bushing main body and a plurality of oil claws. An oil collecting groove for collecting the lubricating oil is formed on an inner circumferential part of the bushing main body, and the bushing main body is provided with a plurality of openings which penetrate the bushing main body and which are in communication with the oil collecting groove. The plurality of oil claws are arranged at the parts of the bushing main body where the openings are formed, and each oil claw is formed so as to warp radially outwards from the bushing main body. Therefore, under the centrifugal force generated during the rotation of an oil collecting bushing the lubricating oil from the oil collecting groove can be guided into the roller path by the oil claws via the corresponding openings.

Abstract: A transmission lubricating assembly of a helicopter includes: a transmission including a speed change structure that changes the speed of rotation produced by rotational power input from a prime mover and outputs the resulting rotational power and a housing accommodating the speed change structure; and a lubricator that lubricates the speed change structure. The lubricator includes a collector that collects a mist of a lubricating oil in an internal space of the housing and a dropper that is disposed below the collector and that applies droplets of the lubricating oil to the speed change structure, the droplets resulting from the collected mist being gathered under its own weight.

Abstract: An automobile-motor driving device equipped with speed reducer which has improved supply of lubrication oil to inside of the rolling bearings without sacrificing the function of the bearings, to reduce deformation in the rolling bearing outer ring. A parallel shaft gear speed reducer provides an automobile-motor driving device equipped with speed reducer. The parallel shaft gear speed reducer includes a plurality of gear shafts having two ends supported via rolling bearings fitted into bearing fitting holes in a speed reducer casing which houses the parallel shaft gear speed reducer. A groove in an inner circumferential surface of the bearing fitting hole into which the rolling bearing is fitted communicates between a space that houses the speed reducer and an inside space of the bearing fitting hole, at a location not crossed by the line of action of a load acting upon the rolling bearing due to the meshing of the gears.

Abstract: A vehicle power transmission device includes: a differential mechanism and provided with a through-hole in an outer circumferential surface, a pair of pinion gears respectively fitted to both ends of a pinion shaft, and a pair of side gears rotatably supported by the differential case and meshed with the pinion gears; and a baffle plate that includes an oil passage component functioning as an oil passage for supplying a lubricating oil for lubricating the pinion gears and the side gears and that is fixedly disposed to cover an outer circumference of the differential case. The oil passage component is provided with an opening portion allowing the lubricating oil in the oil passage to flow out downward, and the opening portion is disposed above the pinion shaft and between a pair of inner-circumferential-side end surfaces of the pair of the pinion gears when the pinion shaft is horizontal.

Abstract: A power transmission apparatus including: a case having a first oil storage configured to store oil at a bottom thereof; a rotating body rotatably housed in the case and having a second oil storage configured as an approximately cylindrical rotating body for transmitting power and configured to store oil therein; and an introducing portion configured to introduce oil from the first oil storage into the second oil storage.

Abstract: A vehicle axle includes, an axle gear unit housing and axle tubes adjoining the latter. The axle gear unit housing has an opening which is surrounded by a flange. Threaded blind bore holes extend beyond the thickness of the flange into the region of the wall of the axle gear unit housing which has radially outwardly on the side of the flange facing the axle gear unit housing a wall thickening which extends annularly radially circumferentially along the flange and which is configured in a continuously annular manner or so as to form spot faces partially in the areas of the threaded blind bore holes, wherein a joint flash extends in a central plane along the axle tubes and toward the flange 4 in the region of the axle gear unit housing and at the flange along the radially outer contour of the wall thickening.

Abstract: A planet wheel carrier for a planetary gear includes a carrier body for supporting shafts of planet wheels and a slide bearing for rotatably supporting a first end of the carrier body with respect to a frame of the planetary gear. The carrier body includes oil channels for conducting oil to bearings of the planet wheels. The slide bearing includes an oil channel for conducting oil from an oil channel of the frame to the oil channels of the carrier body. The planet wheel carrier includes one or more conical roller bearings for rotatably supporting a second end of the carrier body with respect to the frame. Thus, the slide bearing conducts pressurized oil to the rotating planet wheel carrier whereas the conical roller bearings receive axial forces directed to the planet wheel carrier.

Abstract: A guard for protecting a drain plug and a ground-facing surface of an axle housing on a machine including a first portion and a second portion. The first portion has a body configured to be mounted to the axle housing to protect at least portion of the ground-facing surface of the axle housing. The body includes an opening configured to allow access to and removal of the drain plug through the opening. The second portion is removably couplable to the first portion. When the second portion is attached to the first portion, the second portion covers the opening to protect the drain plug. When the second portion is removed, the drain plug is accessible and removable to service oil in the axle housing.

Abstract: 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.

Abstract: An active transfer case is disclosed having a multi-plate friction clutch installed on the front output shaft. A splash recovery lubrication system is provided to capture lubricant splashed from the sump in response to rotation of the friction clutch and transfer the captured lubricant to a central clutch feed chamber to cool and lubricate the components of the friction clutch.

Abstract: A flange portion of a reservoir plate is provided with a holding portion that holds a working oil supply pipe disposed on a converter housing and that is composed of an overhanging portion formed so as to overhang toward the converter housing and a dented portion formed in the overhanging portion along the working oil supply pipe. Consequently, it is possible to reduce the number of components and achieve better assembly compared to a configuration in which another member such as a clamp member is used to hold the working oil supply pipe. Since the holding portion is formed in a complex shape from the overhanging portion and the dented portion with recesses and projections, moreover, the strength of the holding portion against bending etc. can be enhanced.

Abstract: A rolling bearing device includes a bearing portion and an oil supply unit provided adjacent, in the axial direction, to an annular space between an inner ring and an outer ring of the bearing portion to supply lubricating oil to the annular space. The oil supply unit includes an oil chamber that accommodates lubricating oil, a nozzle that discharges lubricating oil in the oil chamber, a pump body that applies a discharge force for causing lubricating oil in the oil chamber to fly from the nozzle toward the annular space, and a detection portion that detects gathering of lubricating oil at a discharge port of the nozzle. The detection portion includes a pair of electrodes disposed with the discharge port of the nozzle interposed therebetween, and a measurement portion that measures the capacitance of the pair of electrodes.

Abstract: A fluid containing component is provided having a structure and a sump for storing a fluid. A gear baffle is disposed between the rotatable component and the structure. The gear baffle includes a first side end and a second side defining a gear cavity therebetween. The fluid displaced by rotation of a gear positioned within the gear baffle collects on inner surfaces of the gear baffle and is directed out of the gear baffle through at least one flow port of the baffle.

Abstract: An aircraft engine having a fan or propeller stage mounted to a planetary gearing system through a planetary gearing output drive shaft is provided with a lubricant system having a seal with lubricant delivery chamber for receiving a lubricant and a sealing surface sealing against a rotatable shaft, the rotatable shaft has a hollow interior and an opening in registration with the delivery chamber. The lubricant system has a lubricant pump in fluidical communication with and downstream of the opening.

Abstract: An axle assembly having an axle housing and a bowl cover. The axle housing may have a center portion that may define a bowl opening and a differential carrier opening that may receive a differential. The bowl cover may be mounted to the axle housing and may cover the bowl opening.

Abstract: A motor vehicle differential including a housing holding a differential mechanism including a ring gear attached to a cage of planetary gears, the housing including a first half-housing that is configured to accommodate the cage of gears and at least a part of the ring gear, and a second half-housing closing the first half-housing, the first half-housing including a chamber that accommodates at least a part of the ring gear, and that includes at least a main transverse wall adjacent to a transverse face of the ring gear. The first half-housing includes a mechanism recovering the oil splashed onto the wall and a mechanism redirecting the recovered oil to the cage of planetary gears.

Abstract: A lubricating structure for a differential device includes a pair of baffle plates, fixed to a transmission case, partitioning an internal space between the transmission case, and a differential case and a final driven gear and a second space. The inner surface of the baffle plates has a portion on the first space side that is enlarged to be similar in shape to outer surfaces of rotating bodies defined by trajectories of the differential case and the final driven gear rotated around a rotational axis of inboard shafts. The baffle plates are configured such that the amount of lubricating oil accumulating in the first space is smaller than that in the second space. A through-hole is provided at a position to secure a level of lubricating oil.

Abstract: A variable baffle for controlling a flow of oil at a gear mesh includes a first baffle member fixed proximate to the gear teeth of a first rotating gear. A second baffle member is rotatably connected to the first baffle member. A third baffle member is fixed proximate to a second rotating gear and aligned with the second baffle member when the second baffle member is in a closed position. A rotating member rotatably connects the second baffle member to the first baffle member. The second baffle member is movable away from the closed position to an open position when the force of a fluid expelled from the gear teeth of the first rotating gear exceeds a force applied to the rotating member normally acting to move the second baffle member toward the closed position.

Abstract: A gearbox assembly includes a housing with a housing interior. A sump is disposed within a lower region of the gearbox housing. A lubricated transmission element is arranged in the housing interior above the sump. A lubricant impoundment is arranged within the housing and in series between the transmission element and the sump such that lubricant flowing in a primary lubricant flow path between the transmission element and the sump is impounded in the lubricant impoundment, thereby providing a supply of lubricant for a secondary lubricant flow path disposed within the gearbox housing.

Abstract: A lubrication unit in a rolling bearing apparatus includes a pump that supplies a lubricant to an annular space formed between an inner ring and an outer ring, and is provided adjacently to the annular space. The pump includes a needle-like nozzle having, at a tip thereof, a discharge port through which the lubricant is discharged toward an outer ring raceway groove in an outer ring. A tip of the nozzle is in contact with a shoulder portion inner peripheral surface adjacent to the outer ring raceway groove or is provided close to the shoulder portion inner peripheral surface such that a very small gap is formed between the tip and the shoulder portion inner peripheral surface.

Abstract: An oil-feeding member (100) catches oil picked up by a gear, and is provided with a gutter (132) guiding the oil from one side to the other of a transmission in an axial direction. The gutter (132) has a bottom which is divided into a first bottom portion (141) and a second bottom portion (142). The second bottom portion (142) is provided with an oil-dripping hole (142a, 142b). The first and second bottom portions (141, 142) are configured so that (i) the oil flows over only the first bottom portion (141) toward the other side if an amount of the oil caught by the oil-feeding member (100) is smaller than or equal to a predetermined amount, and that (ii) the oil flows over both of these bottom portions (141, 142) toward the other side if the amount of the oil is greater than the predetermined amount.

Abstract: A transmission apparatus includes a case, a gear transmission housed in the case, an intra-shaft oil passage formed in a rotating shaft, an oil supplying passage for supplying oil to the intra-shaft oil passage, a guide plate facing an axial end surface of a gear with a predetermined distance in the axial direction of the gear, which is clipped in oil in the case; and an oil passage formed between the one end surface and the guide plate. The oil passage extends along an outer periphery of the one end surface.

Abstract: A shaft for a turbine engine, the shaft having a cavity subdivided axially into first and second chambers. The shaft also includes a distributor member having an axial duct, a first radial orifice, and a second radial orifice. The axial duct has an open first end and a second end closed in the axial direction. The first radial orifice connects the second end of the axial duct to the first chamber in order to feed a first bearing with lubricating fluid, and the second radial orifice connects the second end of the axial duct to the second chamber to feed a second bearing with lubricating fluid. The first radial orifice and the second radial orifice of the distributor member are at substantially equal axial distances from the lubricating fluid inlet.

Abstract: A powertrain includes an engine that has a crankshaft. A first motor-generator is drivingly connected to the crankshaft via an endless rotatable device. The powertrain includes a transmission that has a transmission input member driven by the crankshaft and a transmission output member. A front differential is operatively connected with front half shafts. A transfer case has a gearing arrangement configured to distribute torque of the transmission output member to the front differential and to a driveshaft. A rear differential is operatively connectable with the driveshaft, and is configured to transfer torque from the driveshaft to rear half shafts. A second motor-generator is drivingly connected to the rear differential. A controller is operatively connected to the second motor-generator, and controls the second motor-generator to function as a motor that provides torque to the rear wheels through the rear differential. A modular rear drive unit operatively connects to the vehicle body.

Abstract: An oil path (9) as a lubricating oil collecting and guiding device is provided with a long gutter-shaped main unit (9A), a press-in pin part (21) pushed into a press-in hole (22) formed on an open side end face (4a) of a transmission case (4), and an insertion pin part (24) inserted into an insertion hole (25) formed on a bottom part side of the transmission case (4). By this, the operation of installation on the bottom part side of the transmission case (4) during installation of the oil path (9) on the transmission case (4) includes only inserting the insertion pin part (24) into the insertion hole (25) of the transmission case (25), the operator therefore no longer needs to insert a hand deeply inside the transmission case (4) for the operation, and the operability of installation of the oil path (9) on the transmission case is improved.

Abstract: The disclosed embodiments include self-lubricating oil feed systems that may include an integral bearing. The oil feed systems may include gear pumps suitable to minimize the axial profile of the oil feed systems. Additionally, the oil feed systems may be directly coupled to turbomachinery having a gear, and provide for mechanical support and lubrication of certain components of the turbomachinery. In certain embodiments, the oil feed systems enables the transfer of a lubrication fluid to the bearing during operations of the turbomachinery.

Abstract: A device for lubricating an oil seal of an engine which is simple in construction and low in manufacturing cost without the need for providing piping for supplying lube oil to the oil seal and with which lube oil can be supplied sufficiently and properly to the oil seal to prevent overheating of the oil seal which induces oil leakage and occurrences of damage to the oil seal. The lubricating device has an oil seal which contacts a side face of a disk plate fixed to an end of a crankshaft of the engine and seals a gear room of the engine from outside, wherein an oil injection nozzle is attached to an end face of a crankcase of the engine such that the oil injection nozzle is in communication with a main oil gallery of the engine and oil in the main oil gallery is sprayed toward the slide contacting part of the oil seal.

Abstract: An example lubricating transfer tube assembly includes a transfer tube having a bore extending from a fluid inlet portion to a fluid outlet portion. The transfer tube is configured to communicate a fluid through the bore between the fluid inlet portion and the fluid outlet portion within a gearbox. The transfer tube defines a spray aperture extending from the bore to an outer surface of the transfer tube. The spray aperture is configured to communicate at least some of the fluid from the bore to an area of the gearbox.

Abstract: An axle assembly for a vehicle including a first gear, and a second gear joined to a shaft extending along a longitudinal axis. The second gear engages the first gear. A bearing is disposed over the shaft distal the second gear. A housing is disposed about at least a portion of the shaft. The housing includes a first lubricant pathway spaced apart from a second lubricant pathway, wherein the first lubricant pathway routes lubricant towards the bearing and the second lubricant pathway routes lubricant away from the bearing. The first and second lubricant pathways are not in a position coplanar with a plane of rotation of the first gear.

Abstract: Gas turbine engines systems and methods involving oil flow management are provided. In this regard, a oil pressure analysis system for a gas turbine engine is operative to: receive information corresponding to measured oil pressure and rotational speed during a start up of the engine; correlate the information into data sets, each of the data sets containing a measured oil pressure and a corresponding rotational speed; and determine whether the oil flow valve is functioning properly based on the information contained in the data sets.

Abstract: A system for removing oil from a bearing compartment has a port connected to an end wall of the compartment through which the oil exits the compartment, a scavenge scoop connected to the port for collecting the oil, and a separation device connected to the scavenge scoop for creating an oil collection region.

Abstract: A chain-type driving force transmitting apparatus includes a case having a lower space accumulating therein lubricating oil, an input shaft rotatably supported by the case, an output shaft arranged in parallel with the input shaft and rotatably supported by the case, and a chain wound around the input shaft and the output shaft and lifting up the lubricating oil accumulated in the lower space of the case. The chain-type driving force transmitting apparatus further includes a separator positioned adjacent to the chain and dividing the lower space of the case into a first chamber housing the chain and a second chamber. The separator has an inclined portion formed at an upper end of the separator and inclining towards the chain so as to receive the lubricating oil lifted up by the chain, wherein the lubricating oil received by the inclined portion flows into the second chamber.

Abstract: A lubricating apparatus for lubricating a panel assembly prior to vehicle installation includes a lubricating jig assembly. The lubricating jig assembly includes a front guard wall and a rear guard wall connected to the front guard wall defining a panel receiving volume therebetween. At least one nozzle opening is located in the receiving volume. A pump is fluidly connected to the at least one nozzle opening for delivering a lubricant fluid thereto. A lubricant reservoir is in fluid communication with the receiving volume.

Abstract: A shaft arrangement having a shaft and at least one component, which is arranged on the shaft and which is to be lubricated and/or cooled by a fluid. A fluid feed device being designed to feed the fluid to the shaft arrangement radially from outside. The component is a shaft sealing ring, which rests on the shaft and which is fixed to a housing. A baffle plate, which with the shaft sealing ring defines a fluid baffle chamber and which is separated by an annular gap from the outer circumference of the shaft, is arranged axially next to the shaft sealing ring. The fluid feed device is arranged so that fluid is fed into the fluid baffle chamber.

Abstract: A Shift fork is provided for shifting gears of a transmission assembly of a gear box that includes, but is not limited to a basin for collecting splash oil. The basin includes, but is not limited to an outlet channel for guiding the collected oil away from the basin. By means of the basin splash oil can be collected and led via the outlet channel to nearly every place of the transmission assembly, where additional lubrication is wanted. This provides a better lubrication of parts of the transmission assembly with low effort.

Abstract: A highly reliable combined bearing capable of achieving equal and sufficient lubrication of a plurality of roller bearings with a simple and compact structure is provided. The combined bearing includes a first roller bearing and a second roller bearing which are in contact with each other and arranged on the same axis. A lubricating oil inlet introduces a lubricating oil into an inner space formed between the first roller bearing and the second roller bearing, the lubricating-oil inlet being provided on at least one of an outer ring of the first rolling bearing and an outer ring of the second rolling bearing.

Abstract: A method and apparatus for providing improved lubrication of a spline connection between a PTO driver and a bevel gearbox in which lubricant from the bevel gear housing is directed to a location above and radially outwardly from the splined connection and the apparatus then directs the lubricant flow toward the splined connection by force of gravity. The apparatus is configured to be self-aligning when installed in an existing receptacle in the gearbox housing thereby enabling the apparatus to be conveniently installed in a housing designed to utilize gearbox lubricant to lubricate the splines.

Abstract: An automatic transmission comprises a converter case storing a torque converter, a transmission case storing a transmission mechanism, the transmission case connecting to the converter case at a front thereof and having a rear wall portion to close an end at a rear thereof, a lubricating-oil introduction passage provided at the converter case to introduce lubricating oil, a rear-side lubricating-oil supply passage provided at the rear wall portion to supply the lubricating oil to the transmission mechanism, a lubricating-oil supply pipe extending toward the rear wall portion in the transmission case, an upstream end of which connects to the lubricating-oil introduction passage and a downstream end of which connects to the rear-side lubricating-oil supply passage, wherein the lubricating-oil supply pipe is supported between the converter case and the rear wall portion.

Abstract: A system for removing oil from a bearing compartment has a port connected to an end wall of the compartment through which the oil exits the compartment, a scavenge scoop connected to the port for collecting the oil, and a separation device connected to the scavenge scoop for creating an oil collection region.

Abstract: A method for scavenging oil in a gas turbine engine comprises using a driving fluid flow to drive a flow of a fluid collected in an oil system of the engine to pass through an ejector and then the driven flow of the fluid is directed to be discharged into an oil tank.

Abstract: A lubricant supply tube for attachment to a drive shaft of a sealed reciprocating compressor comprising an elongated first portion adapted for extending downwardly from the drive shaft and inclined with respect to a rotational axis of the drive shaft for immersion into a lubricant in a lubricant sump of the compressor, and terminating in a substantially elliptical inlet orifice defining a first plane; and wherein the first plane is inclined with respect to a second plane extending perpendicular to a longitudinal axis of the elongated first portion.

Abstract: A lubrication scavenge system is disclosed herein. The lubrication scavenge system includes a sump housing substantially encircling a structure disposed for rotation about an axis. The sump housing has an inwardly-facing surface extending at least partially about the axis in a spiral path. The spiral path increases in radial distance from the axis in the direction of rotation of the structure, in a plane perpendicular to the axis. The spiral path extends 360°.

Abstract: A lubricating structure for a static hydraulic continuously variable transmission includes a central oil path axially formed at a center of a shaft of the transmission. A circumferential oil path is arranged at an inner circumferential part of a retainer between the retainer and an outer circumferential part of the transmission shaft. A diametrical oil path is in communication with the circumferential oil path and the central oil path of the shaft of said transmission. The diametrical oil path is provided with an orifice. A lubricant oil ejection hole is arranged at the retainer to eject lubricant oil from the circumferential oil path.

Abstract: A lubrication system for a bearing assembly includes a fan shaft with a plurality of conduits, a first bearing rotatably supporting the fan shaft, and a second bearing rotatably supporting the fan shaft where the second bearing is axially spaced from the first bearing. The plurality of conduits includes at least a first conduit aligned with the first bearing and a second conduit aligned with the second bearing. A spray bar includes a plurality of supply orifices that direct lubricating fluid to the first and second bearings via at least the first and second conduits.

Abstract: A scroll compressor for compressible fluids includes a fixed housing having a spiral-shaped feed chamber which contains a working fluid. A displacement member interacts with the feed chamber and includes a driveshaft which is supported in the housing and has an eccentric disk, a carrier disk which is mounted on the driveshaft, and spiral blades which extend out from both sides of the carrier disk. The displacement member is supported by a bearing on the eccentric disk. A lubricant supply system feeds lubricant to the bearing via the driveshaft and the eccentric disk, with a seal assembly sealing a lubricant chamber against the feed chamber.

Abstract: A bearing device in which an inner ring is sealed from an outer ring by seals and together with the outer ring forms a closed bearing unit with a built-in circulation circuit for a lubricating oil mist. Rolling elements and rolling tracks disposed in the circulation circuit and lubricated by the oil mist. Means are adapted to forming an oil mist of lubricating oil from a reservoir, and means are adapted to causing the oil mist to flow in the circulation circuit. The invention also relates to an application of the bearing device for rotatably supporting a rotor in a centrifugal separator and to a method for supporting a centrifugal separator rotor for rotation about an axis of rotation.

Abstract: The present invention provides a free vortex air-oil separator that may be used in systems for separating oil from air oil mixtures. The free vortex air-oil separator comprises a free vortex chamber having a first chamber wall, a second chamber wall located axially aft from the first chamber wall and a rim located in a radially outer region from an axis of rotation, a plurality of vent holes in the rim and a cavity formed by the first and second chamber walls, and the rim, wherein a free vortex is created when there is a flow into the cavity through the plurality of vent holes.

Abstract: A method and apparatus for scavenging lubricant is disclosed herein. In the invention, a rotating structure is encircled within a sump housing and subjected to lubrication. The sump housing collects high-momentum lubricant flow and low-momentum lubricant flow. The interior of the sump housing is separated into a plurality of chambers with at least one dynamic seal. The at least one dynamic seal extends between the sump housing and the rotating structure to isolate the high-momentum lubricant flow from the low-momentum lubricant flow.

Abstract: A bearing lubrication system includes a stationary output shaft carrier housed within a gear housing wherein the output shaft resides partially within the carrier and upper and lower bearings support the shaft. The carrier includes first and second arcuately extending troughs for catching lubricating fluid slung by an oil slinger. The first trough is in fluid communication with the shaft and with the upper bearing which pumps fluid through the bearing and into an upper passageway which terminates in an opening which supplies fluid to a second trough which, in turn, supplies fluid to the second bearing which, in turn, supplies fluid to the annular pool formed on the upper portion of the gear affixed to the output shaft. The annular pool is formed by a cylindrically shaped dike secured to the upper portion of the gear. Overflow from the pool lubricates the gear and returns oil to the reservoir.

Abstract: A bearing oil supply assembly includes (a) a plate member with opposed first and second sides, the plate member having a first bore formed in the first side which is adapted to receive a first bearing; (b) an annular manifold attached to the plate member such that the plate member and the manifold cooperatively define an annular oil gallery; and (c) a plurality of passages formed in the manifold, the passages cooperating with the plate member to define a plurality of generally axially-directed pathways in fluid communication with the first bore and the oil gallery. The passages are substantially evenly spaced around the circumference of the manifold. The oil supply assembly may be used to supply oil to two bearings carrying separate shafts running at different speeds.