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  2. Key (engineering) - Wikipedia

    en.wikipedia.org/wiki/Key_(engineering)

    For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in which the key fits. The whole system is called a keyed joint . [ 1 ] [ 2 ] A keyed joint may allow relative axial movement between the parts.

  3. Spline (mechanical) - Wikipedia

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

    For instance, a gear mounted on a shaft might use a male spline on the shaft that matches the female spline on the gear. Adjacent images in the section below show a transmission input shaft with male splines and a clutch plate with mating female splines in the center hub, where the smooth tip of the axle would be supported in a pilot bearing in ...

  4. Shaft (mechanical engineering) - Wikipedia

    en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

    In mechanical engineering, a shaft is a rotating machine element, usually circular in cross section, which is used to transmit power from one part to another, or from a machine which produces power to a machine which absorbs power.

  5. Set screw - Wikipedia

    en.wikipedia.org/wiki/Set_screw

    However, small set screws without flats are prone to spinning and galling if overloaded. The use of keys and keyways instead of, or in combination with, set screws is common for applications requiring high torque resistance or transmission. Splines offer yet more strength. For longer life, set screws are usually made of alloy steel and case ...

  6. Engineering fit - Wikipedia

    en.wikipedia.org/wiki/Engineering_fit

    Engineering fits are generally used as part of geometric dimensioning and tolerancing when a part or assembly is designed. In engineering terms, the "fit" is the clearance between two mating parts, and the size of this clearance determines whether the parts can, at one end of the spectrum, move or rotate independently from each other or, at the other end, are temporarily or permanently joined.

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    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. 'Why I was wrong': Allan Lichtman fails to predict correct ...

    www.aol.com/why-wrong-allan-lichtman-fails...

    He was wrong. Or so the American people decided.. Allan Lichtman, the historian who predicted 9 of the 10 last elections, failed to accurately predict who voters would chose to become the 47th ...

  9. Keyway - Wikipedia

    en.wikipedia.org/wiki/Keyway

    Keyway may refer to: A part of a keyed joint used to connect a rotating machine element to a shaft; see key (engineering) A keyhole , a hole or aperture (as in a door or lock) for receiving a key; see lock and key