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  2. Skateboard - Wikipedia

    en.wikipedia.org/wiki/Skateboard

    Each skateboard wheel is mounted on its axle via two ball bearings. With few exceptions, the bearings are the industrial standard "608" size, with a bore of 8 or 10 mm (0.315 or 0.394 inches) depending on the axle, an outer diameter of 22 mm (0.866 inches), and a width of 7 mm (0.276 inches).

  3. ABEC scale - Wikipedia

    en.wikipedia.org/wiki/ABEC_scale

    Illustration of bearing tolerances (in micrometers) for a bearing with a 20 mm inner diameter. For illustration, the figure shows the differences in tolerance per ABEC class in micrometers (μm) for a 20 mm inner diameter bearing. [1] A 20 mm ABEC 7 bearing only has a 5 μm tolerance window, whereas an ABEC 1 has twice as wide a tolerance.

  4. Taurus Model 608 - Wikipedia

    en.wikipedia.org/wiki/Taurus_Model_608

    The Taurus 608 was produced in 1997 in response to Smith & Wesson's .357 Model 686 Plus, which was chambered for seven rounds. Taurus re-chambered their large-frame 607 to hold eight rounds. This revolver was designed to achieve smooth trigger action. Also, the rear sight is adjustable. It has factory porting for release of gases, reducing recoil.

  5. Ball bearing - Wikipedia

    en.wikipedia.org/wiki/Ball_bearing

    Most commonly bearing 608-2Z is used (a deep groove ball bearing from series 60 with 8 mm bore diameter) Many yo-yos, ranging from beginner to professional or competition grade, incorporate ball bearings. Many fidget spinner toys use multiple ball bearings to add weight, and to allow the toy to spin. In centrifugal pumps.

  6. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    Studs with a length of engagement equal to about 1 d: Active: DIN 939: Studs with a length of engagement equal to about 1,25 d: Active: DIN 946: Determination of coefficient of friction of bolt/nut assemblies under specified conditions: Withdrawn: DIN EN ISO 16047: ISO 16047: DIN 960: M8x1 to M100x4 hexagon head bolts with fine pitch thread ...

  7. Bottom bracket - Wikipedia

    en.wikipedia.org/wiki/Bottom_bracket

    Aerozine ceramic external bottom bracket bearing cups for BSC/ISO standard, that is M34.798×1.058 mm (1.37″-24 TPI) threads and a 68 mm wide bottom bracket shell. The bottom bracket on a bicycle connects the crankset (chainset) to the bicycle and allows the crankset to rotate freely.

  8. Linear-motion bearing - Wikipedia

    en.wikipedia.org/wiki/Linear-motion_bearing

    A linear-motion bearing or linear slide is a bearing designed to provide free motion in one direction. There are many different types of linear motion bearings.. Motorized linear slides such as machine slides, X-Y tables, roller tables and some dovetail slides are bearings moved by drive mechanisms.

  9. 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.