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  2. Retaining ring - Wikipedia

    en.wikipedia.org/wiki/Retaining_ring

    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.

  3. Ball screw - Wikipedia

    en.wikipedia.org/wiki/Ball_screw

    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 ...

  4. Locknut - Wikipedia

    en.wikipedia.org/wiki/Locknut

    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 ]

  5. Bearing (mechanical) - Wikipedia

    en.wikipedia.org/wiki/Bearing_(mechanical)

    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.

  6. Positive locking device - Wikipedia

    en.wikipedia.org/wiki/Positive_locking_device

    A wheel hub with a castellated nut secured in the center using a cotter pin to prevent it from unscrewing. A positive locking device is a device used in conjunction with a fastener in order to positively lock the fastener. This means that the fastener cannot work loose from vibrations. The following is a list of positive locking devices: [1] A ...

  7. Jam nut - Wikipedia

    en.wikipedia.org/wiki/Jam_nut

    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.

  8. Fastener - Wikipedia

    en.wikipedia.org/wiki/Fastener

    Structural bolt DIN 6914 with DIN 6916 washer and UNI 5587 nut. A threaded fastener has internal or external screw threads. [7] The most common types are the screw, nut and bolt, possibly involving washers. Other more specialized types of threaded fasteners include captive threaded fasteners, stud, threaded inserts, and threaded rods.

  9. Split beam nut - Wikipedia

    en.wikipedia.org/wiki/Split_beam_nut

    A split beam nut, also known as a split hex nut [1] or slotted beam nut, [2] is a locknut with slots cut in the top that separate the outside end into two [3] or more sections that are bent slightly inward, making the thread diameter undersized in the slotted portion.

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