Abstract: A cooling assembly for an X-ray tube with a stationary body comprising a rotating body located at least around a part of the stationary body, and at least one coolant circuit with at least one coolant flowing through it. The coolant circuit is preferably interposed between the rotating body and the stationary body, with the coolant flowing between the rotating body and the stationary body.

Abstract: In some embodiments, an anode cooling system for a rotating-anode type X-ray tube includes a heat pipe arrangement comprising an evaporator part coupled to an anode, a condenser part coupled to a bearing of the anode, and a plurality of heat pipes arranged in mutually opposing configuration, in-between the evaporator part and the condenser part, wherein the resultant dynamic force on the heat pipes is substantially zero. In some embodiments, an anode cooling system for an X-ray tube, comprises a first heat pipe configured for operating at a predetermined high first temperature range near an anode, a second heat pipe configured for operating at a predetermined low second temperature range coupled to the first heat pipe, and a heat sink coupled to the second heat pipe, and a liquid metal filled in-between the heat pipes and the anode to transfer heat from the anode to the heat pipe by convection.

Abstract: A cooling assembly for an X-ray tube with a stationary body comprising a rotating body located at least around a part of the stationary body, and at least one coolant circuit with at least one coolant flowing through it. The coolant circuit is preferably interposed between the rotating body and the stationary body, with the coolant flowing between the rotating body and the stationary body.

Abstract: In some embodiments, an anode cooling system for a rotating-anode type X-ray tube includes a heat pipe arrangement comprising an evaporator part coupled to an anode, a condenser part coupled to a bearing of the anode, and a plurality of heat pipes arranged in mutually opposing configuration, in-between the evaporator part and the condenser part, wherein the resultant dynamic force on the heat pipes is substantially zero. In some embodiments, an anode cooling system for an X-ray tube, comprises a first heat pipe configured for operating at a predetermined high first temperature range near an anode, a second heat pipe configured for operating at a predetermined low second temperature range coupled to the first heat pipe, and a heat sink coupled to the second heat pipe, and a liquid metal filled in-between the heat pipes and the anode to transfer heat from the anode to the heat pipe by convection.

Abstract: With a view to providing a bearing mechanism exhibiting a high leakage preventing effect for a liquid medium and an X-ray tube having such a bearing mechanism, the bearing mechanism includes a gap between a plain bearing and a shaft, with a liquid medium being present in the gap, the gap comprising at least three concentric annular gaps communicating in series with one another. The shaft has a pumping groove formed in an outer periphery surface thereof at a position facing the gap. The liquid medium is a liquid metal. The liquid metal is gallium or an alloy thereof.

Abstract: Electrically conducting ceramic bearings are described. All components of these bearings preferably comprise TSC, and may not require any conductive coating, or any lubricating coating. These bearings may comprise at least one rolling element such as a bearing ball, a roller, a needle, or the like. These bearings may be ideal for use in x-ray tube bearing assemblies in x-ray imaging systems, or in any other systems that require electrically conductive bearings.

Abstract: Electrically conducting ceramic rolling elements for use in bearing assemblies are described. These rolling elements may comprise bearing balls, rollers or needles, or the like. These rolling elements preferably comprise TSC, and may not need any conductive coating, or any lubricating coating. These rolling elements may be ideal for use in x-ray tube bearing assemblies in x-ray imaging systems, or in any other systems that require electrically conductive rolling elements in the bearing assemblies.

Abstract: Electrically conducting ceramic bearings are described. All components of these bearings preferably comprise TSC, and may not require any conductive coating, or any lubricating coating. These bearings may comprise at least one rolling element such as a bearing ball, a roller, a needle, or the like. These bearings may be ideal for use in x-ray tube bearing assemblies in x-ray imaging systems, or in any other systems that require electrically conductive bearings.