An oil distribution system including a shaft assembly, bearing assembly and mounting assembly is disclosed. The shaft assembly includes a shaft with an inner shaft. A pocket is defined between the shaft and the inner shaft. A ringed lattice containing oil is secured within the pocket, melting of the ringed lattice releases the oil. The shaft includes shaft slots to usher oil from the pocket towards the bearing assembly. The bearing assembly includes an inner and outer race. The inner and outer race each include axial slots and radial slots. The axial slots of the inner race align with the shaft slots to allow oil to flood the inner race. The mounting assembly includes a bearing support having bearing support slots to receive a stringed lattice. Oil from the bearing support flows into the outer race when the axial slots of the outer race align with the bearing support slots.

Systems and methods are provided for remotely monitoring liquid lubricant levels for pump equipment. A system includes a reservoir to store lubricant and a lubrication gland to expose a shaft seal of the pump equipment to the lubricant. A feed line and a return line circulate the lubricant between the reservoir and the lubrication gland. A level sensor is configured to measure a fluid level in the reservoir. The level sensor uses a communication interface to transmit fluid level data a monitoring device mounted to the pump equipment. The monitoring device is configured to compare the fluid level data against stored alert thresholds and send, to a provider network, an alert signal when the fluid level data is below an alert threshold. If the fluid level data is not below an alert threshold, the monitoring device stores the fluid level data for periodic reporting.

A turbocharger includes a rolling bearing including at least one rolling element for rotatably supporting a rotational shaft, a bearing support cylinder located on a radially outer side relative to the rolling bearing, for supporting the rolling bearing, and a housing located on the radially outer side relative to the bearing support cylinder, for covering a circumference of the bearing support cylinder. Between an outer circumferential surface of the bearing support cylinder and an inner circumferential surface of the housing, a gap for forming an oil film by inflow of lubricant oil is provided. At least one of the outer circumferential surface of the bearing support cylinder and the inner circumferential surface of the housing includes an oil film holding portion for suppressing outflow of the lubricant oil from the gap. The oil film holding portion is a protrusion disposed on the outer circumferential surface of the bearing support cylinder, or a recess or the protrusion disposed on the inner circumferential surface of the housing.

A turbocharger includes a rolling bearing including at least one rolling element for rotatably supporting a rotational shaft, a bearing support cylinder located on a radially outer side relative to the rolling bearing, for supporting the rolling bearing, and a housing located on the radially outer side relative to the bearing support cylinder, for covering a circumference of the bearing support cylinder. Between an outer circumferential surface of the bearing support cylinder and an inner circumferential surface of the housing, a gap for forming an oil film by inflow of lubricant oil is provided. At least one of the outer circumferential surface of the bearing support cylinder and the inner circumferential surface of the housing includes an oil film holding portion for suppressing outflow of the lubricant oil from the gap. The oil film holding portion is a protrusion disposed on the outer circumferential surface of the bearing support cylinder, or a recess or the protrusion disposed on the inner circumferential surface of the housing.

An aircraft engine circulation system comprises a conduit arranged in use to communicate a lubricant to and from one or more bearings of an engine. The conduits define a space which comprises a material that is selected to change phase at a predetermined temperature.

A gas turbine engine includes an engine static structure. A rotating structure is configured to rotate relative to the engine static structure. The rotating structure has a target area with first and second directions. The first direction is greater than the second direction. A lubrication system includes a nozzle having a non-circular exit aimed at the target area. The exit provides a width and a height. The width is greater than the height. The width is oriented in the first direction.

Systems and methods for supplying lubricating oil to a high-pressure fuel pump of an engine fuel system. In one embodiment, a system may include a plurality of channels routing lubricating oil to a gear system and drive shaft of a pump without flowing an entire volume of the lubricating oil through a cavity of the drive shaft.

An oil supply device of an aircraft gas turbine includes: a lubrication extraction pipe including a first end and a second end, the first end communicating with a compressor of the gas turbine, an ejection port being provided at the second end and directed to a lubricated member; an oil tank configured to store oil; an oil pipe including a first end and a second end, the first end communicating with the oil tank, the second end communicating with the lubrication extraction pipe; and an electric pump interposed on a portion of the oil pipe and configured to suck the oil from the oil tank and supply the oil to an inside of the lubrication extraction pipe.

The bearing chamber assembly can have a bearing chamber wall extending annularly and having a drain aperture, the drain aperture connecting a scavenge line, and a baffle, the baffle having an apertured sheet connected at one end to the bearing chamber wall, extending from the connected end over and past the scavenge port to a free edge, the free edge spaced from the bearing chamber wall.

A bearing apparatus includes a bearing that rotatably supports a main spindle around a rotation axis, a spacer including an inner-ring spacer adjacent to an inner ring of the bearing and an outer-ring spacer adjacent to an outer ring, and a heat flux sensor provided in an inside surface of the outer-ring spacer. A distance in a direction along the rotation axis from a center of the bearing to a center of the heat flux sensor is longer than 0.5 time and shorter than one time of a dimension of the bearing in the direction along the rotation axis.