The belts in a multiple V-belt drive should be replaced

The belts in a multiple V-belt drive should be replaced

• A. In pairs
• B. Singly
• C. In matched sets
• D. In unmatched sets

Answer: (C)

In a multi-V-belt drive, the belts work together to share the same load, so they must wear in step. Replacing all belts at once with ones of the same size, type, and age ensures they have matching tension, elasticity, and friction characteristics, allowing even torque distribution and smooth operation. If only some belts are replaced (or if new is mixed with worn belts), the imbalance can cause one belt to take more load, slip, wear faster, or cause vibration and premature failure of the others. Replacing them as a matched set maintains consistent performance and longevity.

In a multi-V-belt drive, the belts work together to share the same load, so they must wear in step. Replacing all belts at once with ones of the same size, type, and age ensures they have matching tension, elasticity, and friction characteristics, allowing even torque distribution and smooth operation. If only some belts are replaced (or if new is mixed with worn belts), the imbalance can cause one belt to take more load, slip, wear faster, or cause vibration and premature failure of the others. Replacing them as a matched set maintains consistent performance and longevity.