V-Belts are the most common type of drive belt used for power transmission. Their primary function is to transmit power from a primary source, like a motor, to a secondary driven unit. They provide the best combination of traction, speed transfer, load distribution, and extended service life.
Advantages of V-belt drive
- High power transmission capacity because V-grooves provide excellent grip.
- The functioning of the belt and the pulley is smooth and quiet.
- The V-belt drive provides compactness due to the small distance between the centers of the pulleys.
- Slip between the belt and the pulley is negligible.
- The axis can be horizontal, vertical or inclined.
- They can dampen vibration.
Disadvantage of belt drive
- Limited Speed range.
- They are not compact.
- Considerable power loss.
- Short service life compared to other mode power transmission.
- The velocity ratio may vary due to belt slip.
- They inflict a heavy load on shafts and bearings.
