What is the method to tension a fixed belt drive system?

In a fixed belt drive system, tensioning is essential for optimal performance and efficiency. Adding a pulley or sheave (idler) is an effective method because it allows you to increase the wrap angle of the belt around the driving pulley or the driven pulley. This added surface contact enhances the frictional grip between the belt and the pulley, which is important for preventing slippage and ensuring that the system operates smoothly.

This method not only provides adequate tension but also offers the flexibility of making adjustments without the need to realign or reposition the entire motor or drive assembly. It is particularly useful when the existing tension is insufficient due to belt wear or stretching over time.

Other methods such as adjusting motor mounts can affect the overall position of the motor but might require more extensive modification and time. Tightening the belt manually may not provide a consistent or long-lasting tension, as belts have a tendency to stretch with use. Lubricating the belt is generally not recommended, as it can actually lead to slippage and degrade the belt material over time, counteracting any desired tensioning effect.