Fastening element (1), in particular mounting bolt, comprising a fixing portion (10), an intermediate portion (20) and a fitting portion (30), wherein the fastening element (1) extends along a longitudinal axis (L), wherein the fixing portion (10) comprises fixing structures, in particular a thread, wherein the intermediate portion (20) is arranged in the direction of the longitudinal axis (L) between the fixing portion (10) and the fitting portion (30), wherein the fitting portion (30) is substantially rotationally symmetrical about the longitudinal axis (L), wherein the fitting portion (30) has an outer support surface (34), wherein the support surface (34) has a clearance fit, and wherein at least in the fitting portion (30) a lubrication groove (32) is provided.

A method of repairing a chain can include aligning a bore of an outer chain link with a bore of an inner chain link, inserting a pin through the aligned bores, the pin having a thread end opposite a head end, engaging a multi-jackbolt tensioner with the thread end of the pin, the multi-jackbolt tensioner having a plurality of fasteners, advancing each of the plurality of fasteners to press on the outer chain link, and forming an interference fit between the pin and the outer chain link at the bore of the outer chain link from the advancing of the fasteners.

A working machine assembly has a rotatable shaft and a power transmission device having a central hub with a bore there through configured to receive the rotatable shaft. The shaft and power transmission device are connected with a securing mechanism that includes a key inserted in a keyway formed in an inner surface of the central hub and a key seat formed along a portion of the shaft wherein the key prevents relative movement between the rotatable shaft and the attached power transmission device. The securing mechanism has a pin having a flat tapered surface. The pin is received in a cross hole in the hub and interacts with the key such that the tapered surface abuts the key. The pin has a threaded end. A nut is received on the threaded end and used to draw the tapered surface of the pin against the key in a wedging action.

A number of magnetically assisted latch mechanisms are presented, where the latching and unlatching action is done with reduced user effort, therefore promoting speed and efficiency without sacrificing the strength of the bond of the connected components. The latching mechanisms are designed to secure panels or other similar small and large mostly flat components. The latching method is done by a rotating component that takes all the separating load once rotated into the locked position. The rotatable lock, or hammer, is also locked itself into position to prevent accidental movement by the hammer.

The present disclosure relates to a spacer configured to space a first member apart from a second member, and the spacer includes a support component and a spacer component. The support component has a body, which has a support surface for the first member to be put on, and the support component further has a first hook element separated from the support surface by a first distance and a second hook element separated from the support surface by a second distance greater than the first distance. The spacer component is used to be placed between the first member and the second member and to space the first member apart from the second member, and the spacer component can be snap-fitted with the first hook element or the second hook element relational to the thickness of the first member. The present disclosure further relates to a connection system including the spacer for a base station antenna. The spacer is advantageous in cost, compact in structure, and easy to install.

A mounting system having a dual plunger arrangement wherein the side of each plunger has a pull down cam to provide a desired pull down action in relation to at least two studs, the cams moving relative to one another and axially aligning relative to one another relative to the two axially spaced pull down studs to allow the plungers to provide a maximum hold down force for the two pull down studs, balance the hold down forces thereby maximizing performance and reducing unlocking forces.

A centering screw for aligning two elements, particularly a workpiece and a carrier, relative to each other, the centering screw having a first end section with a first outside diameter and a first length, and a second end section with a second outside diameter and a second length, the first end section having a first thread, at least in sections, and a cone being provided for the centering. In this case, the centering screw has the cone in an intermediate section between the first end section and the second end section, the cone having a diameter changing along the intermediate section, the diameter at an end of the cone facing away from the first end section being larger than the first outside diameter, and the end of the cone facing away from the first end section being assigned an axial stop facing away from the first end section.

A fastener structure is provided, including a hollow sleeve, a rod body, and a hook assembly. The hollow sleeve is assembled on a first plate, and the rod body is inserted into the hollow sleeve. The hook assembly is rotatably assembled on the first plate, and includes a hook component and an elastic component. The hook component is adapted for being fastened to a positioning opening portion of a second plate, where a first side of the rod body is adapted to lean against the hook component. A first end of the elastic component leans against the first plate, and a second end of the elastic component is fixed on the hook component.

A bus bar assembly includes a bus bar formed of a first electrically conductive material having a planar contact portion. The bus bar defines a first bore extending through the contact portion. The bus bar assembly further includes a contact insert formed of a second electrically conductive material that has a greater hardness than the first electrically conductive material. The contact insert defines a first surface that is mechanically and electrically connected to the contact portion of the bus bar. The contact insert defines a second surface this is plated with a third electrically conductive material which is different than the second electrically conductive material. The contact insert defines a smooth second bore coaxial with the first bore and extending from the first surface to the second surface.

The present invention relates to an assembly of a first component (1) and a second component (2) of a wind turbine, the assembly comprises, a paired eccentric cam adjuster (10) adapted for a connection of the first component and the second component of a wind turbine, said components (1,2) each having at least one hole (3,4), the adjuster comprising, a first and second eccentric cam adjuster (7,8), both comprising, a tube (101) with an outer surface and an inner bore (103), with a first central longitudinal axis (321) of the outer surface having an offset (320) from a second central longitudinal axis (322) of the inner bore and a flange (102) arranged at one end of the tube, said cam adjusters (7,8) arranged to be inserted into said holes, and a bolt (5) and a nut (6) arranged to be inserted in the inner bores.