A lock nut and tang washer mechanism preloads and locks components in a rotating environment. A drive system mechanism preloads and locks the device in a rotating environment and provides a double locking safety requirement needed in most aircraft for applications operating in an enclosed environment. The mechanism holds a required torque for the duration of the drive system operating life without the need for periodic visual inspections.

A rotary bearing (50), especially for harmonic gearing, comprising an outer bearing ring (1b) and an inner bearing ring (1a) arranged therein; whereby the inner bearing ring (1a) and the outer bearing ring (1b) are each provided with at least one receptacle (10, 11) through which, when the two receptacles (10, 11) are in a corresponding position with respect to one another, rolling elements (8) can be inserted through a receptacle opening (22) formed by the two receptacles (10, 11) into an anti-friction bearing between the bearing surface (7) of the inner bearing ring (1a) and the bearing surface (9) of the outer bearing ring (1b), wherein a guide ring (20) for the rolling elements (8) is arranged in at least one of the two receptacles (10, 11) between the receptacle opening (22) and the rolling elements (8).

A planetary gear system is provided in one example embodiment and may include a planet gear further comprising a bearing system, the bearing system further comprising an inner bearing assembly comprising a spherical bearing and an outer race; an outer bearing assembly comprising a plurality of cylindrical roller bearings, an inner race, and an outer race; and a race element comprising an inner surface and an outer surface, wherein the outer surface of the race element is the inner race for the outer bearing assembly and the inner surface of the race element is associated with the outer race for the inner bearing assembly.

One aspect of the disclosure relates to a sliding member. The sliding member includes: a first sliding portion having a first lubricant placed between first parts of a first friction sliding mechanism; a second sliding portion having a second lubricant placed between second parts of a second friction sliding mechanism; and a third sliding portion having a third lubricant placed between third parts of a third friction sliding mechanism. The first sliding portion is in contact with the third lubricant, and the second sliding portion is not in contact with the third lubricant. The second lubricant contains an additive containing conductive carbon, and the third lubricant contains no conductive carbon. The second lubricant contains a relatively larger amount of the conductive carbon than the first lubricant.

A bearing system including a first member having an outer surface wherein at least a portion of the outer surface includes a plurality of plateaus and a plurality of indentations, a dry-film lubricant at least partially filling at least one of the plurality of indentations, and a second member having a mating surface to the outer surface of the first member wherein the second member configured to move past the first member.

A bearing including a bearing ring having an annular base and a plurality of gear teeth integrally formed with the annular base. Each gear tooth of the plurality of gear teeth includes a first flank surface extending substantially radially from the annular base, a top land surface extending substantially in the axial direction, and a chamfered surface between the top land surface and first flank surface. The chamfered surface includes a first arc with a first radius in a range of 0.1 to 0.15 times the gear module of the bearing ring. The first arc has a point of tangency with the first flank surface. The chamfered surface has length P extending in the radial direction between the point of tangency and the top land surface, and P is in the range of 0.1 to 0.15 times the gear module of the bearing ring.

A friction of a planetary gearbox, having first and second rotatably connected components. Oil adjacent an oil feed pocket of the first component is directed into a bearing clearance. The oil is directed into the pocket by a line that opens into the pocket. An oil supply unit supplies oil to the bearing clearance at a defined pressure. A ratio between the pulse, via which the oil is directed into the bearing clearance and which corresponds to the product of the square of the inflow rate of the oil into the clearance and the oil density, and the pulse of the oil which adheres to the internal side of the second component 5*10.sup.−3. The pulse of the oil adhering to the second component is equal to the product of the square of the velocity of the oil adhering to the second component and the oil density.

A planetary gearbox has a sun gear, planet gears, a ring gear and plain bearing pins. A plain bearing pin is arranged in a respective planet gear, wherein the plain bearing pin and the planet gear form a lubricated plain bearing which includes a plain bearing gap, and on its contact face, the plain bearing pin forms a feed pocket which is configured to receive oil and output it to the plain bearing. On its contact face, the plain bearing pin forms an additional feed pocket which is configured to receive oil and output it to the plain bearing, is spaced from the feed pocket in the circumferential direction, and is connected to the feed pocket such that oil from the additional feed pocket can flow on the contact face of the plain bearing pin to the feed pocket.

A plain bearing of a planetary gearbox has first and second rotationally connected components. Oil adjacent an oil feed pocket of the first component is directed into the bearing clearance between the components by a first line that opens into the pocket. The line includes a first portion and a downstream second portion. The flow cross section of the first portion is smaller than the flow cross section of the second portion. The flow cross section for the oil, in the feed direction, in the circumferential direction of the clearance and in the main rotation direction of the second component relative to the first component increases more than counter to the main rotation direction of the second component, or in the circumferential direction of the clearance and counter to the main rotation direction of the second component increases more than in the main rotation direction of the second component.

A fixed bearing for a steering gear includes a bearing sleeve, and ball bearing having an inner bearing shell and outer bearing shell. The inner shell is configured to hold a pinion shaft of the steering gear. The outer shell is held in the sleeve. Each shell respectively has at least one guide groove to hold and guide bearing balls, and a pivot ring with an outer ring and inner ring pivotably connected via at least one torsion web. The inner ring is connected to the sleeve. The outer ring is configured to mount the fixed bearing in a steering gear housing. At least one shell is formed from partial shells, each partial shell defining at least a portion of the respective guide groove. The multi-part design enables relatively large guide groove shoulders and a correspondingly relatively high ball bearing load-bearing capacity even under a relatively high tilting load during steering gear operation.