The belt tensioner By maintaining the correct tension, the belt tensioner helps to prevent slippage, excessive vibrations, and premature wear of the belt and associated components. It also ensures that the driven accessories function properly, optimizing their performance and efficiency.

Tension Adjustment: Many belt tensioners have a mechanism to adjust the tension. This feature allows for fine-tuning the tension to ensure optimal performance and prevent belt slippage or excessive strain.

Belt Alignment Indicator: In certain applications, belt tensioners may have an alignment indicator to help ensure that the belt is properly aligned with the pulleys. This indicator assists in diagnosing and correcting any misalignment issues.