A ball screw drive (10) including a threaded spindle (12) having a first, free end (16) and a second end (17) which can be connected to a drive, and a spindle nut (14) at least partially enclosing the threaded spindle (12) coaxially. A plurality of balls (26) recirculate in the space between the threaded spindle (12) and the spindle nut (14) form the core element. An extension sleeve (15), which connects coaxially to the spindle nut (14), is fixedly connected to the latter and moves together with it relative to the threaded spindle (12). At the first end (16) of the threaded spindle (12), a substantially circular bearing ring (18, 30, 50, 70) is attached to the outer circumference of the threaded spindle (12), which circular bearing ring serves as a shaft bearing between the threaded spindle (12) and the extension sleeve (15) and which has a noise-dampening effect due to at least one integrated spring/damping element. This spring/damping element of the bearing ring (30, 50, 70) is preferably a combination of at least one notch (32, 52, 72) on the inner circumference of the bearing ring (30, 50, 70) and an annular gap (34, 54, 74).

A guide device which is producible in a simple manner and which enables reliable and stable guidance of two elements moveable relative to each other, the guide device comprises a guide rail and a sliding body which is displaceable in sliding manner on the guide rail along a guide direction, Wherein the sliding body comprises at least one pair of mutually oppositely located sliding surfaces with which the sliding body rests on at least one pair of mutually oppositely located contact surfaces of the guide rail, wherein the sliding body comprises a pressing device with the at least one pair of sliding surfaces of the sliding body is pressable onto the at least one pair of contact surfaces of the guide rail.

An axially compliant rolling bearing for precision motion stages having a stage, at least one bearing member slidably disposed along a rail, and a compliant joint interconnecting the at least one roller bearing to the stage. The compliant joint is sufficiently compliant to permit movement of the stage in the axial direction while remaining stiff in other directions orthogonal to the axial direction.

A slide rail assembly for mounting a chassis to a rack is provided. The chassis has multiple mounting members on a lateral side. The slide rail assembly is mounted on the rack by two brackets and includes first and second rails, a first auxiliary supporting member, and multiple reinforcing segments. The first rail has first and second sides, wherein the first side has a concave space. The second rail can be displaced with respect to the first rail and has an inner side and an outer side. The first auxiliary supporting member is mounted in the concave space of the first side of the first rail. The reinforcing segments are fixedly mounted on the inner side of the second rail.

A bushing is provided for adjusting to differences in diameter between concentric elements of an assembly. The bushing may be provided with a plurality of leaf springs coupled to one another to form parts of a wall. The bushing wall may have a first contact face and a second contact face opposite the first contact face. The bushing wall may also be configured to be positioned in a generally annular shape. Each of the leaf springs forming part of the bushing wall may be radially deflectable relative to each of the other leaf springs in order to self-align the bushing by the resilient response of each leaf spring.

A sliding bearing 1 which is interposed between a tube 4 and a rack shaft 7 includes a bearing body 11 and two elastic rings 13 and 14 fitted on an outer surface 12 of the bearing body 11, and the bearing body 11 has slits 26 extending from an end face 22 to this side of an end face 24, slits 27 extending from the end face 24 to this side of the end face 22, an inner surface 33 having a sliding surface 28, and an outer surface 12 on which are formed grooves 34 respectively receiving the elastic rings 13 and 14 and projections 35 and 36 respectively provided on axial end portions 23 and 25 with the grooves 34 disposed therebetween.

An assembly having an outer component, an inner component, and a ring positioned between the outer component and the inner component, where the ring has at least one radially extending projection adapted to seat within at least one groove in the inner component or outer component, and where the projection is adapted to compress radially to allow rotational or axial movement between the inner component and the outer component upon application of rotational or axial force respectively to at least one of the inner component or the outer component.

A motion guide device is formed of: a track member including a base portion extending along a longitudinal direction, and a pair of wall portions erected from both edges of the base portion in a width direction, and having rolling element rolling grooves formed along a longitudinal direction; and a moving member which is assembled in a movable manner along the longitudinal direction between the wall portions, and to which a pair of guide members are assembled, load rolling element rolling grooves which correspond to the rolling element rolling grooves being formed in the guide members, wherein at least either one of the guide members is equipped with a biasing member on a surface of the guide member on a side opposite to a surface of the guide member on which the load rolling element rolling groove is formed.

A platform comprises a base platform, a linear motor is provided on the base platform and connected with an air flotation platform, a bearing platform is provided below the air flotation platform, a plurality of shock absorption assemblies are embedded in the base platform and arranged at intervals below the bearing platform, the shock absorption assembly comprises a bottom plate, shock absorption columns are symmetrically provided on an upper end of the bottom plate, a piston is cooperatively arranged in the shock absorption column, a cavity is formed between a bottom end of the piston and an inner wall of the shock absorption column, a sliding rod is fixed on an upper end of the piston, and an assembly joint is connected to a top end of the sliding rod and to a bottom end of the bearing platform.

A roller carriage for displaceable linear guidance in a longitudinal direction on a rail element is disclosed. The roller carriage includes a carrier and a first, second, and third roller. The first, second, and third rollers are each mounted on the carrier such that each can rotate about a rotating axle. The rotating axles are substantially parallel to one another and the first, second, and third rollers are disposed on the roller carriage such that the first roller can be brought into engagement with a first track of the rail element and the second and third rollers can be brought into engagement with a second track of the rail element. The first roller is mounted such that it can move in a transverse direction perpendicular to the longitudinal direction relative to the carrier and is resiliently pretensioned in transverse direction by a first spring element.