Load-carrying apparatus, assemblies, and subterranean drilling systems may include a support ring with a plurality of contact elements coupled to the support ring. The plurality of contact elements may have a surface exhibiting a partially cylindrical shape.

A bearing bush configured to support a journal of a journal cross of a cardan shaft includes a cylindrical circumferential wall that radially delimits an interior for receiving rolling elements and the journal and includes a base axially delimiting the interior. The base has a central holder configured to receive a slip disk for contacting the journal. The base may include a conical portion extending from the cylindrical circumferential wall and a flat central portion, and the holder may be formed as a depression in the flat central portion. Also a journal bearing assembly including the bearing bush.

A bearing bush configured to support a journal of a journal cross of a cardan shaft includes a cylindrical circumferential wall that radially delimits an interior for receiving rolling elements and the journal and includes a base axially delimiting the interior. The base has a central holder configured to receive a slip disk for contacting the journal. The base may include a conical portion extending from the cylindrical circumferential wall and a flat central portion, and the holder may be formed as a depression in the flat central portion. Also a journal bearing assembly including the bearing bush.

Bearing assemblies that include a plurality of polycrystalline diamond (“PCD”) bearing elements, bearing apparatuses including such bearing assemblies, and methods of operating and fabricating such bearing assemblies and apparatuses are disclosed. In an embodiment, the plurality of PCD bearing elements of one or more of the bearing assemblies disclosed herein include at least one first PCD bearing element. At least a portion of the first PCD bearing element exhibits a coercivity of about 125 Oersteds or more and a specific magnetic saturation of about 14 Gauss.Math.cm.sup.3/gram or less. The first PCD bearing element includes a bearing surface with at least one groove formed therein. In an embodiment, the plurality of PCD bearing elements also include at least one second PCD bearing element. The second PCD bearing element exhibits a coercivity that is less than and a specific magnetic saturation that is greater than the first PCD bearing element.

Bearing assemblies, apparatuses, systems, and methods include bearing assemblies where one of the bearing assemblies may include angled bearing surfaces having a planar shape.

Bearing assemblies, apparatuses, systems, and methods include bearing assemblies where one of the bearing assemblies may include bearing surfaces defining an at least partially conical inner surface.

Methods of manufacturing a radial sliding bearing may include coupling superhard contact elements to support rings where each superhard contact element includes a superhard contact surface and forming at least some of the superhard contact surfaces to comprise an arcute or a planar surface.

Methods of manufacturing a radial sliding bearing may include coupling superhard contact elements to support rings where each superhard contact element includes a superhard contact surface and forming at least some of the superhard contact surfaces to comprise an arcute or a planar surface.

A driveline joint may include a driveline shaft that has a plurality of slots and a shaft coupling positioned in an interior of the driveline shaft in which the shaft coupling includes one or more openings with each of the openings corresponding to one or more respective slots of the plurality of slots included in the driveline shaft. The driveline joint may include one or more spherical bearings that are each positioned between an interior lateral surface of the driveline shaft and an exterior lateral surface of the shaft coupling and against one of the openings of the shaft coupling. The driveline joint may include one or more fasteners, wherein each of the fasteners extends through one of the slots and one of the openings of the shaft coupling.

An axial bearing for a spinning rotor of an open-end spinning machine includes a static bearing component having axially polarized permanent magnet rings delimited on both sides by ferromagnetic pole disks arranged in a bearing housing, the static bearing component interacting with a dynamic bearing component formed by ferromagnetic webs arranged on a rotor shaft of the spinning rotor. Each pole disk includes a disk ring, a central opening, a vertical axis, and a horizontal axis. The disk ring includes an area of reduced ferromagnetic material on an inner circumference thereof at the vertical axis as compared to a remaining inner circumferential area of the disk ring.