A vehicle steering device includes a turning shaft held in a housing so as to be movable in the axial direction, a ball screw transmitting drive force produced by an electric motor to the turning shaft, a bearing supporting a nut, which is a component of the ball screw, so as to be rotatable relative to the housing, and annular elastic members that support side faces of the bearing in the axial direction of the turning shaft across the entire circumference, and are formed of an elastic material. The elastic members include respective first elastic portions having a first load characteristic that gently increases the ratio of compression load per a unit compression amount deforming in the axial direction of the turning shaft, and respective second elastic portions having a second load characteristic that keenly increases the ratio in comparison with the first load characteristic.

A bearing includes a bearing pad for supporting a rotary component and a housing attached to or formed integrally with the bearing pad. The housing defines a first fluid damper cavity positioned adjacent to the bearing pad and a second fluid damper cavity spaced from the first fluid damper cavity. The first and the second fluid damper cavities are in restrictive flow communication. The housing is configured to transfer a fluid from the first fluid damper cavity to the second fluid damper cavity in response to a force acting on the bearing pad to dampen a movement of the bearing pad.

A bearing includes a bearing pad for supporting a rotary component and a housing attached to or formed integrally with the bearing pad. The housing defines a first fluid damper cavity positioned adjacent to the bearing pad and a second fluid damper cavity spaced from the first fluid damper cavity. The first and the second fluid damper cavities are in restrictive flow communication. The housing is configured to transfer a fluid from the first fluid damper cavity to the second fluid damper cavity in response to a force acting on the bearing pad to dampen a movement of the bearing pad.

A radial foil bearing includes: a bearing housing provided with an insertion hole; a top foil accommodated in the insertion hole; and a cover attached to an end surface of the bearing housing in an axial direction in which the insertion hole extends, wherein the top foil is rolled in a cylindrical shape in a state where two ends of the top foil intersect such that the two ends of the top foil are pulled out toward the bearing housing, and the cover faces, in the axial direction, at least either one of the two ends of the top foil, and an engagement member attached to the bearing housing and engaging with the top foil.

A mooring assembly for a vessel comprises a moonpool having a casing, a turret mounted in a moonpole for a rotation by upper and lower bearing assemblies. The lower bearing assembly comprises a stiff inner bearing ring attached to a lower part of the turret, an outer bearing ring attached to a casing of the moonpool and a number of circumferentially spaced bearing blocks positioned between the inner and outer bearing rings. A mounting assembly maintains a substantially fixed position of the bearing blocks relative to the outer bearing ring but allows the bearing blocks to assume a position where the load transfer between the bearing blocks and outer bearing ring occurs with a minimum of stress concentrations within the outer bearing ring and wherein the larger part of the load transfer occurs directly between the bearing blocks and outer bearing ring without being directed through the mounting assembly.

A mooring assembly for a vessel comprises a moonpool having a casing, a turret mounted in a moonpole for a rotation by upper and lower bearing assemblies. The lower bearing assembly comprises a stiff inner bearing ring attached to a lower part of the turret, an outer bearing ring attached to a casing of the moonpool and a number of circumferentially spaced bearing blocks positioned between the inner and outer bearing rings. A mounting assembly maintains a substantially fixed position of the bearing blocks relative to the outer bearing ring but allows the bearing blocks to assume a position where the load transfer between the bearing blocks and outer bearing ring occurs with a minimum of stress concentrations within the outer bearing ring and wherein the larger part of the load transfer occurs directly between the bearing blocks and outer bearing ring without being directed through the mounting assembly.

A rotation system (10) is disclosed having at least one axial gas bearing, containing: a housing (11), a shaft (12) that can be rotated relative to the housing (11), at least one bearing plate (13) attached to the shaft (12), and at least one bearing assembly (14) which supports the bearing plate (13) relative to the housing (11), via an axial gas bearing. The bearing assembly (14) has, from inside to outside, a radially inner region (15) supporting the bearing plate (13), a radially central region (16) and a radially outer region (17) held by the housing (11). The radially inner region (15) contains at least one axial bearing element (19) and at least one retention element (20). The bearing plate (13) is supported by the axial bearing element (19), and the retention element (20) holds the axial bearing element (19) in the axial direction.

A rotation system (10) is disclosed having at least one axial gas bearing, containing: a housing (11), a shaft (12) that can be rotated relative to the housing (11), at least one bearing plate (13) attached to the shaft (12), and at least one bearing assembly (14) which supports the bearing plate (13) relative to the housing (11), via an axial gas bearing. The bearing assembly (14) has, from inside to outside, a radially inner region (15) supporting the bearing plate (13), a radially central region (16) and a radially outer region (17) held by the housing (11). The radially inner region (15) contains at least one axial bearing element (19) and at least one retention element (20). The bearing plate (13) is supported by the axial bearing element (19), and the retention element (20) holds the axial bearing element (19) in the axial direction.

A system for the axial retention of a holding ring for a bearing for guiding in rotation a rotary shaft of a turbomachine is disclosed. The system includes an annular bearing support and a bearing holding ring that is borne by the annular bearing support. The bearing holder ring includes an upstream ring configured to be brought into contact with the bearing support and a downstream ring that is elastically deformable. The bearing support has a first axial retention element, and the bearing holding ring has a second axial retention element. The first and second axial retention elements are configured to cooperate with one another to axially retain the bearing holding ring in the event of damage to the downstream ring.

A system for the axial retention of a holding ring for a bearing for guiding in rotation a rotary shaft of a turbomachine is disclosed. The system includes an annular bearing support and a bearing holding ring that is borne by the annular bearing support. The bearing holder ring includes an upstream ring configured to be brought into contact with the bearing support and a downstream ring that is elastically deformable. The bearing support has a first axial retention element, and the bearing holding ring has a second axial retention element. The first and second axial retention elements are configured to cooperate with one another to axially retain the bearing holding ring in the event of damage to the downstream ring.