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  2. 4-8-4 - Wikipedia

    en.wikipedia.org/wiki/4-8-4

    They had boilers with 243.2 square metres (2,618 square feet) of heating surface that had a working boiler pressure of 1.5 megapascals (220 pounds per square inch). Russian-designed roller bearings were fitted throughout and the boilers were designed to provide a continuous steaming capacity of 57 kilograms (126 pounds) per one square metre (11 ...

  3. Plate rolling machine - Wikipedia

    en.wikipedia.org/wiki/Plate_rolling_machine

    So, a machine has the capability of rolling 2-inch-thick material with the maximum mechanical advantage, but a job is only 1/2 inch thick. Reduce the mechanical advantage and one has a machine that can roll from 1/2 to 2 inches thick. Plate rollers can be powered and controlled in multiple ways.

  4. Babbitt (alloy) - Wikipedia

    en.wikipedia.org/wiki/Babbitt_(alloy)

    Load bearing is required to carry (the weight which is being exerted through the combined weights of the shaft and any other direct weights on the shaft and measured in pounds-force per square inch): Formula: L = W / (I.D × L.O.B.). Example: Determine the load on a bearing of a 2-inch I.D. bearing, 5 inches long and carrying a weight of 3,100 lbf:

  5. Rolling-element bearing - Wikipedia

    en.wikipedia.org/wiki/Rolling-element_bearing

    A cylindrical roller bearing. Roller bearings are the earliest known type of rolling-element-bearing, dating back to at least 40 BC. Common roller bearings use cylinders of slightly greater length than diameter. Roller bearings typically have a higher radial load capacity than ball bearings, but a lower capacity and higher friction under axial ...

  6. Spherical roller bearing - Wikipedia

    en.wikipedia.org/wiki/Spherical_roller_bearing

    Spherical roller bearing with a brass cage in a cut-through view. A spherical roller bearing is a rolling-element bearing that permits rotation with low friction, and permits angular misalignment. Typically these bearings support a rotating shaft in the bore of the inner ring that may be misaligned in respect to the outer ring.

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