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  2. Shaft alignment - Wikipedia

    en.wikipedia.org/wiki/Shaft_alignment

    [1] [2] When the equipment is down, production requiring the equipment may be delayed. Bearings or mechanical seals may be damaged and need to be replaced. Shaft alignment is the process of aligning two or more shafts with each other to within a tolerated margin. The process is used for machinery before the machinery is put in service.

  3. Balancing of rotating masses - Wikipedia

    en.wikipedia.org/wiki/Balancing_of_rotating_masses

    The balancing of rotating bodies is important to avoid vibration. In heavy industrial machines such as gas turbines and electric generators, vibration can cause catastrophic failure, as well as noise and discomfort. In the case of a narrow wheel, balancing simply involves moving the center of gravity to the centre of rotation.

  4. Wiggler (tool) - Wikipedia

    en.wikipedia.org/wiki/Wiggler_(tool)

    An edge finder is a rotating tool, meaning the machine spindle must be turning for the tool to work. On one end of a cylindrical shank, a second cylinder is attached by a spring running through the center of both cylinders. The second cylinder rotates with the first.

  5. Rotating unbalance - Wikipedia

    en.wikipedia.org/wiki/Rotating_unbalance

    Rotating unbalance is the uneven distribution of mass around an axis of rotation. A rotating mass, or rotor, is said to be out of balance when its center of mass (inertia axis) is out of alignment with the center of rotation (geometric axis). Unbalance causes a moment which gives the rotor a wobbling movement characteristic of vibration of ...

  6. Condition monitoring - Wikipedia

    en.wikipedia.org/wiki/Condition_monitoring

    Condition monitoring techniques are normally used on rotating equipment, auxiliary systems and other machinery like belt-driven equipment, (compressors, pumps, electric motors, internal combustion engines, presses), while periodic inspection using non-destructive testing (NDT) techniques and fit for service (FFS) [1] evaluation are used for ...

  7. Component placement - Wikipedia

    en.wikipedia.org/wiki/Component_placement

    The feeder moves in the X direction to a fixed pickup location. As many as 36 vacuum nozzles around the perimeter of the rotating turret provide Z and theta alignment. Turret rotates multiple heads between pickup and placement locations. The PCB moves in X and Y direction under the rotating heads, pausing beneath the correct placement location.

  8. Rotordynamics - Wikipedia

    en.wikipedia.org/wiki/Rotordynamics

    Rotordynamics (or rotor dynamics) is a specialized branch of applied mechanics concerned with the behavior and diagnosis of rotating structures. It is commonly used to analyze the behavior of structures ranging from jet engines and steam turbines to auto engines and computer disk storage.

  9. Stuffing box - Wikipedia

    en.wikipedia.org/wiki/Stuffing_box

    A gland is a general type of stuffing box, used to seal a rotating or reciprocating shaft against a fluid. The most common example is in the head of a tap where the gland is usually packed with string which has been soaked in tallow or similar grease. The gland nut allows the packing material to be compressed to form a watertight seal and ...