A car clutch plate (driven plate) is coated on both sides with a hard wearing high friction material. This is situated between the engine flywheel and a spring loaded pressure plate. The spring/pressure can be released by depressing the clutch pedal.
While driving, the whole clutch assembly can be turning at very high speeds. To allow a non rotating clutch pedal to control the rotating clutch assembly a clutch release bearing uses a fork acting on a thrust face.
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