A compressor wheel assembly of a turbocharger can include a compressor wheel that includes a through bore that extends from a base portion to a nose portion of the compressor wheel; a turbocharger shaft disposed in the through bore of the compressor wheel where the turbocharger shaft includes an end portion that extends axially away from the nose portion of the compressor wheel; and a swaged collar fixed to the end portion of the turbocharger shaft.

A compressor wheel assembly of a turbocharger can include a compressor wheel that includes a through bore that extends from a base portion to a nose portion of the compressor wheel; a turbocharger shaft disposed in the through bore of the compressor wheel where the turbocharger shaft includes an end portion that extends axially away from the nose portion of the compressor wheel; and a swaged collar fixed to the end portion of the turbocharger shaft.

A speed increaser includes a high-speed shaft, an annular peripheral wall surrounding the high-speed shaft and rotatable with a rotation of a low-speed shaft, the peripheral wall having an inner peripheral surface and a projection extending inwardly from the inner peripheral surface in a radial direction of the high-speed shaft, and a roller disposed between the high-speed shaft and the peripheral wall and having an outer peripheral surface that is in contact with both the projection and an outer peripheral surface of the high-speed shaft. A centrifugal compressor includes the speed increaser, an electric motor driving to rotate the low-speed shaft, and an impeller mounted to the high-speed shaft.

A speed increaser includes a high-speed shaft, an annular peripheral wall surrounding the high-speed shaft and rotatable with a rotation of a low-speed shaft, the peripheral wall having an inner peripheral surface and a projection extending inwardly from the inner peripheral surface in a radial direction of the high-speed shaft, and a roller disposed between the high-speed shaft and the peripheral wall and having an outer peripheral surface that is in contact with both the projection and an outer peripheral surface of the high-speed shaft. A centrifugal compressor includes the speed increaser, an electric motor driving to rotate the low-speed shaft, and an impeller mounted to the high-speed shaft.

A positioning system for aligning first and second coupling elements of adjacent sections of an industrial machine such as a shaft of a turbomachine or generator is provided. The system may include a base, and a pair of lifting jacks supported by the base for adjusting a vertical position of the first coupling element relative to the second coupling element. A coupling element support supports the first coupling element and is supported by the pair of lifting jacks on the base. An adjusting element positioned between each lifting jack and the coupling element support allows adjusting a position of the first coupling element relative to the second coupling element in the axial direction and a lateral direction substantially perpendicular to the axial direction.

A positioning system for aligning first and second coupling elements of adjacent sections of an industrial machine such as a shaft of a turbomachine or generator is provided. The system may include a base, and a pair of lifting jacks supported by the base for adjusting a vertical position of the first coupling element relative to the second coupling element. A coupling element support supports the first coupling element and is supported by the pair of lifting jacks on the base. An adjusting element positioned between each lifting jack and the coupling element support allows adjusting a position of the first coupling element relative to the second coupling element in the axial direction and a lateral direction substantially perpendicular to the axial direction.

A gas turbine engine has two connected parts that rotate together during use. The two parts have a tensile loading that acts to separate the two parts in use. The two parts may be neighbouring rotating stages of a gas turbine engine. The two parts are connected together using both a mechanical fastener and an interlocking feature. The interlocking feature may be, for example, interlocking conical surfaces and/or interlocking protrusions.

A gas turbine engine has two connected parts that rotate together during use. The two parts have a tensile loading that acts to separate the two parts in use. The two parts may be neighbouring rotating stages of a gas turbine engine. The two parts are connected together using both a mechanical fastener and an interlocking feature. The interlocking feature may be, for example, interlocking conical surfaces and/or interlocking protrusions.

A torque transmitting coupling for an electric submersible pump equipment string. A torque transmitting coupling system includes a first adapter including a first inner diameter mated to a first shaft rotatable about a first axis of rotation, and a first splined outer diameter mated to a splined coupling inner surface, a second adapter including a second inner diameter mated to a second shaft rotatable about a second axis of rotation, and a second splined outer diameter mated to the splined coupling inner surface, the first and second splined outer diameter at least partially spherical such that when the first axis of rotation moves with respect to the second axis of rotation, at least one of the splined outer diameters rock along the coupling inner surface.

Systems and methods for reducing friction during gas turbine engine assembly may comprise, a rear hub which may comprise a conical web, a horizontal arm coupled to the conical web, and/or a hub kickstand coupled to the conical web. The conical web, horizontal arm, and/or hub kickstand may converge at a pivot point. The hub kickstand may be removably coupled to the tie shaft.