A robot arm with high productivity capable of preventing a decelerator from being damaged is provided. A robot arm according to an embodiment of the present disclosure is a robot arm in which a second member is rotationally coupled to a first member via a decelerator that accommodates lubricant therein, the robot arm including: a circulation path in which the lubricant is circulated via the decelerator; a storage part that is arranged in the circulation path and stores the lubricant; and an actuator configured to circulate the lubricant, in which the storage part is provided with a filter for capturing impurities in the lubricant in such a way that the filter covers an outlet of the lubricant in the storage part.

The present disclosure is applicable to all gear trains using a journal bearing as a means of supporting gear shaft rotation. It is related in some embodiments to a system and method for supplying lubricant to the journal bearings of a gear-turbofan engine gear train when the fan rotor is subjected to a wind-milling condition in both directions, either clockwise or counterclockwise.

Variable displacement pumps and biasing assemblies for the same are disclosed. Example pumps may include a housing having an inlet and an outlet, and a rotor fixed for rotation with a shaft, with the shaft rotatably mounted within the housing. The pump may further include a plurality of radially extending vanes slidably disposed in the rotor, and a pivotable ring member defining a control chamber about the rotor, with the ring member being pivotable within the housing to vary an eccentricity of the ring member with respect to the rotor. The pump may further include a biasing assembly applying a biasing force to the ring member in a first direction about the shaft, with the biasing assembly including at least one resilient element extending longitudinally along a stand, and a sliding support slidably disposed on the stand and laterally supporting the resilient element with respect to the stand.

A sprocket gerotor pump includes an outer gerotor gear configured to rotate about a first axis. The outer gerotor gear includes an outer gear body including a plurality of internal gear teeth extending from the outer gear body toward the first axis. The sprocket gerotor pump includes an inner gerotor gear configured to rotate about a second axis. The inner gerotor gear includes an inner gear body and a plurality of external gear teeth extending from the inner gerotor gear away from the second axis. The external gear teeth mesh with the internal gear teeth. Rotating the outer gerotor gear causes rotation of the inner gerotor gear. The sprocket gerotor pump further includes a sprocket integrally coupled with the outer gerotor gear such that the sprocket and the outer gerotor gear collectively form a one-piece structure. The sprocket is driven by a chain.

The present disclosure is applicable to all gear trains using a journal bearing as a means of supporting gear shaft rotation. It is related in some embodiments to a system and method for supplying lubricant to the journal bearings of a gear-turbofan engine gear train when the fan rotor is subjected to a wind-milling condition in both directions, either clockwise or counterclockwise.

A system for lubricating a wire rope includes a housing configured to be mounted adjacent a wire to be lubricated. A cartridge for housing lubricant is disposed on the housing. At least two nozzles are in fluid communication with the cartridge and configured to dispense the lubricant onto a respective wire at a position adjacent a weight bearing portion of the wire.

A system for lubricating a wire rope includes a housing configured to be mounted adjacent a wire to be lubricated. A cartridge for housing lubricant is disposed on the housing. At least two nozzles are in fluid communication with the cartridge and configured to dispense the lubricant onto a respective wire at a position adjacent a weight bearing portion of the wire.

One embodiment provides an apparatus for replacing transmission fluid of an automatic gear shift, including: a first tube and a second tube, operatively coupled to two different access points of the automatic gear shift; a first tank containing the fresh transmission fluid; a second tank which receives the exhausted transmission fluid; a first three-way electro valve which establishes selective communication between the first tube and the first tank or between the first tube and the second tank; a second three-way electro valve comprising a selective communication between the second tube and the first tank or between the second tube and the second tank; a first pressure gauge and a second pressure gauge operatively coupled to the first tube and to the second tube, respectively, to detect the pressure of the transmission fluid, wherein an oleodynamic manifold comprises a box-like casing housing for the three-way electro valves and the pressure gauges; and a first calibrated throttling is present between the first gauge and the first three-way electro valve and a second calibrated throttling is present between the second gauge and the second three-way electro valve. Other aspects are described and claimed.

A pump assembly for delivering a medium via a flow chamber (13) defined by a hydraulic housing and a housing cover, includes a pump shaft rotatably drivable about an axis of rotation, an impeller fixed to one end of the pump shaft inside the flow chamber, a bearing carrier. The pump assembly further includes a lubrication and cooling system with oil recirculation in the bearing carrier.

A pump assembly for delivering a medium via a flow chamber (13) defined by a hydraulic housing and a housing cover, includes a pump shaft rotatably drivable about an axis of rotation, an impeller fixed to one end of the pump shaft inside the flow chamber, a bearing carrier. The pump assembly further includes a lubrication and cooling system with oil recirculation in the bearing carrier.