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  2. Sprag clutch - Wikipedia

    en.wikipedia.org/wiki/Sprag_clutch

    One-way bearing combining sprags and bearing rollers in one race Sprags jam when driven and slide when in reverse. A sprag clutch is a one-way freewheel clutch.It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags, or other elements allowing single direction rotation, are used.

  3. Centrifugal clutch - Wikipedia

    en.wikipedia.org/wiki/Centrifugal_clutch

    A chainsaw's clutch. The chain wraps around a sprocket behind the clutch that turns with the outer drum. The input of the clutch is connected to the engine crankshaft while the output may drive a shaft, chain, or belt. As engine revolutions per minute increase, weighted arms in the clutch swing outward and force the clutch to engage. The most ...

  4. File:Diagram of centrifugal clutch.svg - Wikipedia

    en.wikipedia.org/wiki/File:Diagram_of...

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  5. Slipper clutch - Wikipedia

    en.wikipedia.org/wiki/Slipper_clutch

    When a back torque comes from the transmission, the splined hub slides up the bearing ramps, disconnecting from the clutch plates and allowing a limited slip between input and output. This type of clutch is designed to partially disengage or "slip" when the rear wheel tries to drive the engine faster than it would run under its own power.

  6. Hydramatic - Wikipedia

    en.wikipedia.org/wiki/Hydramatic

    The Controlled-Coupling Hydra-Matic incorporated a secondary fluid coupling and a pair of sprag clutch in place of the former friction clutch and brake bands, shifting in part by alternately draining and filling the secondary coupling. It was a later version of GM's "dual-range Hydra-Matic", first introduced in some 1952 models.

  7. Thrust bearing - Wikipedia

    en.wikipedia.org/wiki/Thrust_bearing

    Thrust ball bearings, composed of bearing balls supported in a ring, can be used in low-thrust applications where there is little axial load. Cylindrical roller thrust bearings consist of small cylindrical rollers arranged flat with their axes pointing to the axis of the bearing. They give very good carrying capacity and are cheap, but tend to ...

  8. Electromagnetic clutches and brakes - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_clutches...

    Based upon the size of the clutch or brake, the speed and the inertia, wear rates will differ. For example, a machine that was running at 500 rpm with a clutch and is now sped up to 1000 rpm would have its wear rate significantly increased because the amount of energy required to start the same amount of inertia is a lot higher at the higher speed.

  9. Viscous coupling unit - Wikipedia

    en.wikipedia.org/wiki/Viscous_coupling_unit

    Viscous couplings are used as the center differential in some four-wheel-drive (4WD) vehicles.. The first mass-produced viscous couplings for a permanent 4WD off-road-capable vehicle were in the AMC Eagle, which was produced from 1980 to 1988 model years. [2]

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