The clutch release bearing is also known as throw-out bearing. It temporarily disengages the engine from the transmission during the gear shifts. When it fails, it affects the shifting of gears and leads to failure of other cultch and transmission components. A bad throw-out bearing can give rise to strange noises, clutch pedal vibrations, and gear shifting issues. The clutch becomes stiff with a bad throw-out bearing. The clutch release bearing is not that expensive. So, for effective clutch disengagement, replace the component whenever needed.