Abstract:
A bearing unit for rotary anodes of x-ray tubes includes a shaft and a flange element to which a rotary anode can be attached, wherein: the bearing unit can be inserted into a cutout within the x-ray tube and locked in place; the shaft is mounted via a first bearing element and a further bearing element; the first bearing element and the further bearing element each consists of an angular ball bearing mounted on the shaft and having an inner ring and an outer ring; and at least one spacer element is mounted between the inner rings and/or the outer rings of the first and the second bearing element.
Abstract:
A bearing unit for rotary anodes of x-ray tubes includes a shaft and a flange element to which a rotary anode can be attached, wherein: the bearing unit can be inserted into a cutout within the x-ray tube and locked in place; the shaft is mounted via a first bearing element and a further bearing element; the first bearing element and the further bearing element each consists of an angular ball bearing mounted on the shaft and having an inner ring and an outer ring; and at least one spacer element is mounted between the inner rings and/or the outer rings of the first and the second bearing element.
Abstract:
The rotating anode x-ray tube has a composite outer bearing made from two rings of a high hot-hardness material and a spacer between the two rings made of a constant coefficient of thermal expansion material. The spacer is welded to the two rings providing the composite outer bearing. One inner bearing race is formed from the shaft and the other inner bearing race is a one-piece inner race mounted on the shaft while the two rings have the corresponding outer races.
Abstract:
A bearing retainer for mounting for a bearing in an x-ray tube, the x-ray tube having a rotating anode supported on an anode shaft held within a hollow anode stem, the retainer being slidably fitted into a hollow anode stem to hold one bearing coaxially with the anode shaft and to permit axial motion of the bearing so held, where the sliding surface of the bearing retainer is coated with titanium carbide, and wherein the bearing retainer includes a bearing flange not coated with titanium carbide which may be swaged around the outer race of the bearing to hold the bearing.
Abstract:
An X-ray tube having a rotary anode which is accommodated in a vacuum-tight housing so as to be rotatable by means of at least one spirally grooved bearing. The mutually cooperating surfaces of the bearing consist essentially of Mo or of an alloy of Mo and W and are effectively wetted by a Ga-alloy serving as a bearing lubricant. In order to extend the life of the X-ray tube, 1 to 4% by weight of Ag and/or Cu are added to the Ga-alloy, as a result of which the formation of crystalline compounds is inhibited.
Abstract:
A rotating anode is mounted on a shaft of an X-ray tube by means of a ring. The ring allows expansion and reduces the hyperstatic state of the assembly. The ring has the shape of a diabolo, preferably that of a hyperboloid structure generated by revolution. The ring dampens vibration phenomena in a shaft bearing the rotating anode and reduces noise-creating phenomena.
Abstract:
An x-ray tube 10 is provided including an anode mounted to a rotatable shaft positioned within a center bore of a stem element, a bearing assembly positioned between the rotatable shaft and the stem element, and at least one liquid metal shunt in thermal communication with both the rotatable shaft and the stem element, located adjacent to the anode between the anode and the bearing assembly, and directing heat generated at the anode away from the bearing assembly by allowing heat to flow from the rotatable shaft into the stem element prior to heat reaching the bearing assembly.
Abstract:
A multiple row x-ray tube bearing assembly is provided, including an inner bearing member, an outer bearing member, and a free rotational intermediate race member positioned between the inner bearing member and the outer bearing member such that the inner bearing member and the outer bearing member may rotate independently of each other.
Abstract:
A Belleville spring/ball combination is utilized in a rotating anode target bearing assembly in an X-ray tube for thermal and electrical conduction as well as self-centering of the target shaft and noise reduction.