Embodiments disclosed herein are directed to bearing assemblies, related bearing apparatuses, and related methods. An example of a bearing assembly disclosed herein may include a support structure having a first end and a second end. The bearing assembly also includes a superhard bearing element secured to the first end of the support structure. The superhard bearing element includes a superhard sealing surface that may be configured to contact a sealing surface of an opposing bearing element, a base surface contacting the support structure and opposing the superhard sealing surface, and at least one lateral surface extending between the superhard sealing surface and the base surface. The support structure and the superhard bearing element may both include at least one conduit extending therethrough through which a fluid may flow.

Embodiments disclosed herein are directed to bearing assemblies, related bearing apparatuses, and related methods. An example of a bearing assembly disclosed herein may include a support structure having a first end and a second end. The bearing assembly also includes a superhard bearing element secured to the first end of the support structure. The superhard bearing element includes a superhard sealing surface that may be configured to contact a sealing surface of an opposing bearing element, a base surface contacting the support structure and opposing the superhard sealing surface, and at least one lateral surface extending between the superhard sealing surface and the base surface. The support structure and the superhard bearing element may both include at least one conduit extending therethrough through which a fluid may flow.

An electric motor is described comprising a rotor, a shaft integral with the rotor to transfer torque to a load, a stator coaxially crossed by the shaft. To improve the thermal resistance, a plain bearing placed between the stator and the shaft, and a lubricating fluid circuit configured to transport lubricating fluid and wet a contact surface between the stator and the shaft with the fluid.

A data collection apparatus includes an input portion to which a result of detection (heat flux) by a heat flux sensor provided in a beating is provided and a controller configured to collect the result of detection by the sensor provided to the input portion in prescribed sampling cycles for storage. When magnitude of the heat flux is smaller than a switching threshold value, the controller sets the sampling cycle to a first cycle, and when magnitude of the heat flux is larger than the switching threshold value, the controller switches the sampling cycle to a second cycle shorter than the first cycle and determines whether or not there is a sign of abnormality of the bearing based on a rate of change in heat flux collected in the second cycles.

A resin sliding bearing includes: a bearing surface for slidingly bearing a shaft; and a hollow that communicates with the bearing surface through to a different surface of the bearing.

A rotor shaft for an electric motor includes an axially extending tubular body having an inner circumferential surface defining a hollow interior thereof with at least a portion of the hollow interior configured to receive a coolant therein. A plurality of circumferentially spaced splines extends radially inwardly from the inner circumferential surface into the portion of the hollow interior configured to receive the coolant therein. Each of the splines is configured to provide a heat exchanging structure for transferring heat from the rotor shaft to the coolant. The splines are one of integrally formed with the tubular body or provided as inserts captured by the tubular body during a flow forming process.

Methods are directed towards dynamically determining refrigerant film thickness at the rolling-element bearing and for dynamically controlling refrigerant film thickness at the rolling-element bearing. Further, an oil free chiller system is configured for dynamically determining refrigerant film thickness at the rolling-element bearing of the oil free chiller system, wherein the oil free chiller system is also configured for dynamically controlling refrigerant film thickness at the rolling-element bearing of the oil free chiller system.

The present invention relates to a centrifugal pump and a bearing retainer for the centrifugal pump. The centrifugal pump has a shaft, a bearing for supporting the shaft, and a bearing retainer for the bearing. The bearing retainer comprises a ring section adapted to surround the bearing and an elastic section adjacent the ring section, wherein the elastic section comprises multiple slits, dividing the elastic section into multiple resilient parts, wherein the multiple resilient parts are adapted to receiving and supporting the bearing, thereby creating a compression force in radial direction perpendicular to the axis of the shaft, allowing the bearing retainer to hold the bearing in a fixed position with respect to the bearing retainer.

The present invention relates to a centrifugal pump and a bearing retainer for the centrifugal pump. The centrifugal pump has a shaft, a bearing for supporting the shaft, and a bearing retainer for the bearing. The bearing retainer comprises a ring section adapted to surround the bearing and an elastic section adjacent the ring section, wherein the elastic section comprises multiple slits, dividing the elastic section into multiple resilient parts, wherein the multiple resilient parts are adapted to receiving and supporting the bearing, thereby creating a compression force in radial direction perpendicular to the axis of the shaft, allowing the bearing retainer to hold the bearing in a fixed position with respect to the bearing retainer.

An insulating device for a bearing mountable within a housing, the bearing having an inner ring and an outer ring with an outer circumferential surface and opposing axial ends and a plurality of rolling elements disposed there between. The insulating device comprises: a first annular part, which is adapted to be in contact to the outer circumferential surface of the outer ring, and a second annular part, which is also adapted to be in contact to the outer circumferential surface of the outer ring. The first and second part form the insulation device which is adapted to contact, in an assembled state of the bearing in the housing, both the outer ring and the housing. The first part is thermally conductive and electrically insulating and the second part is electrically insulating and less thermally conductive than the first part or is not thermally conductive.