Timing Belt : Calculations Advantages Disadvantages and Applications

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Belt drives are used to transfer rotational motion from one shaft to another. Timing belt is a type of belt that is used to transfer synchronous motion. In this article we will discuss what is timing belts, it’s advantages, disadvantages and applications.

What is Timing Belt?

Timing belt drive consist of driver, driven and idler pulley and a timing belt.

Timing belt is a type of synchronous belt consisting of teeth similar to gears. It is used to transfer synchronous motion from one shaft to another shaft. They consist of driver, driven and idler pulley and a timing-belt.

Number of teeth on driver and driven timing pulley determines the velocity ratio between driver and driven shafts. 

For example, If number of teeth on driver pulley is higher than the number of teeth on driven pulley. Driven shaft will rotate at higher speed compared to driver shaft.

Timing Belt Length Calculations?

Belt length can be calculated if timing pulley diameter and center to center distance between the driver and driven pulley is available.

Timing belt length can be calculated if timing pulley diameter and center to center distance between driver and driven pulley is available.

Calculation Formula

Timing belt formula

Belt Length Calculator

Advantages of Timing Belts
  • Low Noise
  • Less Vibrations
  • No slippage Problem
  • High Mechanical Efficiency : Upto 98%
  • Constant Velocity Ratio
  • Low Maintenance
Disadvantages of Timing Belts
  • High Cost
  • Initial alignment with timing pulley is required.
  • Used to transfer relatively low power.
  • Transfer power at relatively smaller distance.
Applications of Timing Belt and Pulley Drive

Similar to gears, Timing belts are used to transfer rotational motion from one shaft to another with minimum mechanical losses. Their application involves:

  • Timing belts are used to coordinate the rotational motion of the engine crankshaft with the camshaft. 
  • Sewing Machines
  • 3D printer
  • Treadmill
  • Conveyor System
  • Industrial automation products. etc

Conclusion

To sum up, timing belts are used to transfer rotational motion with constant velocity ratio from one shaft to another. Due to low cost and maintenance they are replacing gears in various applications. For more information on belt drive, We suggest you read this article on belt drive. 

Got Questions?  We will be happy to help.

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