V-Belt Drive - Advantages and Disadvantages

V-Belt Drive - Advantages and Disadvantages
These types of belt drive suitable for high-power transmission to short length. They are normally made from fabric and rubber. The angle of V-belt usually between 30° to 40°. To increase power output, several V-belt may operate side by side so that load equally divided between them.

If one belt in multiple V-belt drives fails, the entire set of the belt should be replaced at the same time to avoid uneven velocity due to different tension on the belt.
Read: Difference between Flat Belt Drive And V-Belt Drive

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.

Disadvantages of V-belt drive

  • The V-belt drive cannot be used for long distances due to greater weight per unit of length.
  • They are not applicable to the synchronous machines because they are not free from creep.
  • The centrifugal tension prevents the use of belts at speeds below 5 m/s and above 50 m/s.
  • The construction of pulleys for v-belts is more complicated than the flat belt.
Flat Belt Drive - types, advantage and disadvantage
Causes of belt failure and Power loss

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