Key Characteristics of Belt Drives
Release time:
2025-12-22
A belt drive system consists of a driving pulley, driven pulley, and an endless belt. It is commonly used to transmit power between parallel shafts rotating in the same direction, known as an open belt drive. Key design considerations include center distance, wrap angle, transmission ratio, belt stress, and the allowable power of a single V-belt.
Based on belt cross-section shape, belt drives are generally classified into flat belts, V-belts, and special belts.
Advantages
Suitable for power transmission over large center distances
Good flexibility, effectively absorbing shock and vibration
Slip under overload conditions protects other components from damage
Simple structure and low cost
Disadvantages
Larger overall size compared to other drive systems
Requires a tensioning device
Slip prevents a constant transmission ratio
Relatively short belt service life
Lower transmission efficiency
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