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  2. ABEC scale - Wikipedia

    en.wikipedia.org/wiki/ABEC_scale

    The ABEC scale is designed to provide bearing manufacturers dimensional specifications that meet the standards of precision bearings in a specified class. The scale is also used by manufacturers who produce equipment that require bearings must also know the dimensional tolerances to design parts that will accommodate a bearing.

  3. Ball (bearing) - Wikipedia

    en.wikipedia.org/wiki/Ball_(bearing)

    Silicon nitride bearing balls, in diameters ranging from 1 to 20mm. Bearing balls are special highly spherical and smooth balls, most commonly used in ball bearings, but also used as components in things like freewheel mechanisms. The balls themselves are commonly referred to as ball bearings. [1] This is an example of a synecdoche.

  4. Tire code - Wikipedia

    en.wikipedia.org/wiki/Tire_code

    To take a common example, 195/55R16 would mean that the nominal width of the tire is approximately 195 mm at the widest point, the height of the side-wall of the tire is 55% of the width (107 mm in this example) and that the tire fits 16-inch-diameter (410 mm) rims. The code gives a direct calculation of the theoretical diameter of the tire.

  5. Ball bearing - Wikipedia

    en.wikipedia.org/wiki/Ball_bearing

    Working principle for a ball bearing; red dots show direction of rotation. A four-point angular-contact ball bearing. A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It ...

  6. 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.

  7. DN factor - Wikipedia

    en.wikipedia.org/wiki/DN_Factor

    Once the DN factor of a bearing has been obtained, it can be used to consult grease selection charts in order to determine the correct lubricant. Viscosity must be matched to the needs of the bearing in order to obtain maximum efficiency, and to avoid lubricant runout due to overheating, which is a consequence of metal-on-metal contact, as well ...

  8. “Abbott Elementary”’s Janelle James Made a Huge Style Error ...

    www.aol.com/abbott-elementary-janelle-james-made...

    Please, every day. I think that’s a New York thing, it’s just part of your vocabulary. F---, motherf---er, bitch. I use them all. It’ll let you know I mean business. Last thing I took from a set

  9. Wheel sizing - Wikipedia

    en.wikipedia.org/wiki/Wheel_sizing

    Wheels with Asanti 28 in (710 mm) rims on a police Hummer H2 car. The wheel size is the size designation of a wheel given by its diameter, width, and offset.. The diameter of the wheel is the diameter of the cylindrical surface on which the tire bead rides.

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