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  2. Rolling-element bearing - Wikipedia

    en.wikipedia.org/wiki/Rolling-element_bearing

    The loads within a bearing assembly are also affected by the speed of operation: rolling-element bearings may spin over 100,000 rpm, and the principal load in such a bearing may be momentum rather than the applied load. Smaller rolling elements are lighter and thus have less momentum, but smaller elements also bend more sharply where they ...

  3. 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.

  4. Foil bearing - Wikipedia

    en.wikipedia.org/wiki/Foil_bearing

    Turbomachinery is the most common application because foil bearings operate at high speed. [6] Commercial applications in production include microturbines, [7] fuel cell blowers, [8] and air cycle machines. The main advantage of foil bearings is the elimination of the oil systems required by traditional bearing designs. Other advantages are:

  5. Tunnel crankcase - Wikipedia

    en.wikipedia.org/wiki/Tunnel_crankcase

    A tunnel crankcase, tunnel crankshaft or disc-webbed crankshaft [1] is a design feature of a piston engine where the main bearings that support the crankshaft within the crankcase form the largest diameter of any part of the crankshaft and are larger than the crank webs.

  6. 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]

  7. Fluid bearing - Wikipedia

    en.wikipedia.org/wiki/Fluid_bearing

    Hydrodynamic bearings rely on the high speed of the journal (the part of the shaft resting on the fluid) to pressurize the fluid in a wedge between the faces. Fluid bearings are frequently used in high load, high speed or high precision applications where ordinary ball bearings would have shortened life or caused high noise and vibration. They ...

  8. Race (bearing) - Wikipedia

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

    In the case of ball bearings, the bearing has inner and outer races and a set of balls. Each race is a ring with a groove where the balls rest. The groove is usually shaped so the ball is a slightly loose fit in the groove. Thus, in principle, the ball contacts each race at a single point.

  9. Cycloidal drive - Wikipedia

    en.wikipedia.org/wiki/Cycloidal_drive

    A cycloidal drive or cycloidal speed reducer is a mechanism for reducing the speed of an input shaft by a certain ratio. Cycloidal speed reducers are capable of relatively high ratios in compact sizes with very low backlash. [1] The input shaft drives an eccentric bearing that in turn drives the cycloidal disc in an eccentric, cycloidal motion ...

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