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The Main rotor attach nut, or "Jesus nut", from a Bell 222U, shown in hand for size perspective (left) and installed with locking key (right). Jesus nut is a slang term for the main rotor retaining nut [1] or mast nut, which holds the main rotor to the mast of some helicopters.
Inverted retaining rings are a variation of axially assembled rings in which the lug holes are inverted to fit in the bottom of the groove. Inverting the lugs allows greater clearance on a shaft or in a housing and forms a higher uniform shoulder good for retaining bearings and other components with large corner radii or chamfers.
A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut, [1] stiff nut [1] or elastic stop nut, [2] is a nut that resists loosening under vibrations and torque. Prevailing torque nuts have some portion of the nut that deforms elastically to provide a locking action. [ 2 ]
In normal use, a nut-and-bolt joint holds together because the bolt is under a constant tensile stress called the preload.The preload pulls the nut threads against the bolt threads, and the nut face against the bearing surface, with a constant force, so that the nut cannot rotate without overcoming the friction between these surfaces.
Left inset: recirculating tube removed showing retainer bracket, loose balls and tube. Right inset: closer view of the nut cavity. A ball screw (or ballscrew) is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a ...
A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
Shaft collar to DIN 705. The shaft collar is a simple, yet important, machine component found in many power transmission applications, most notably motors and gearboxes.The collars are used as mechanical stops, locating components, and bearing faces.
Crown hex nut, blind nut, cap nut, domed cap nut, or dome nut A nut that has a domed end on one side Barrel nut: Steel cross dowel or dowel nut, cross dowel (woodworking) A round slug or formed sheet metal part with threads perpendicular to the length of the nut Cage nut: Caged nut, captive nut, clip nut
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