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2. List of DIN standards - Wikipedia

   en.wikipedia.org/wiki/List_of_DIN_standards

   Fluid technology – hose lines, dimensions, specifications: DIN 20163: Explosives work: DIN 21800: Hammer and pick signs (mining symbol) DIN 21908: Mining crevice work; colours: DIN 22101: Conveyor belt for bulk material, fundamentals, analysis and design: DIN 22107: Arrangements for belt conveyor rollers: DIN 22112: Rollers: dimensions ...

3. Spherical roller thrust bearing - Wikipedia

   en.wikipedia.org/.../Spherical_roller_thrust_bearing

   The internal design of the bearing is not standardised by ISO, so it varies between different manufacturers and different series. Some of the design parameters are: Roller shape and dimensions; Flange design; Non-rotational notches in house washer; The spherical roller thrust bearings have the highest load rating density of all thrust bearings. [4]

4. Wheel sizing - Wikipedia

   en.wikipedia.org/wiki/Wheel_sizing

   Off-roading tires may use a different measurement scheme: Tread width × Outside diameter, followed by wheel size (all in inches) – for example 31×10.50R15 (787 mm × 267 mm R380 in metric designation). The size of the wheel, however, is denoted as 8.5 in × 20.0 in (220 mm × 510 mm).

5. 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.

6. Thrust bearing - Wikipedia

   en.wikipedia.org/wiki/Thrust_bearing

   The small size (one-tenth the size of old bearing designs), low friction and long life of Kingsbury and Michell's invention made possible the development of more powerful engines and propellers. They were used extensively in ships built during World War I , and have become the standard bearing used on turbine shafts in ships and power plants ...

7. 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.