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A shaft designed so that, as it rotates, it vibrates in a way that reduces or cancels some of the vibration produced by an engine. Not essential to an engine’s operation, balance shafts are nonetheless becoming increasingly common as a means of engine refinement.
A balance shaft is manufactured through either forging or casting. B Forged balance shafts are widely used, due to their lightness, compact dimensions, and effective inherent damping.