The majority of concrete saws that are being used today rely on a belt to drive the blade shaft. The belt is a very convenient and efficient means of transmitting the power and motion needed to turn blades. Belts also serve as the fuse in the system. They are designed to slip, preventing overloading and damage to other components in the drive system. The goal is to adjust the belt tension so that the belt transmits the maximum amount of power without overloading the drive system. The practice of overtensioning belts can result in failed shafts or bearings.
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