Timing belt and pulley selection steps

May 09, 2024

1. Determine the design power:

Design power (Pd) is calculated based on the motor's power (Pm) and working condition coefficient (KA): Pd = KA × Pm

The working condition coefficient (KA) is usually determined by looking up a table based on specific application scenarios and working conditions.

2. Select the Timing Belt model:

According to the design power (Pd) and the speed of the small Belt Pulley (n1), the appropriate Synchronous belt model is determined by looking up the table (intersection point).

3. Determine the basic width of the timing belt belt:

According to the selected timing belt belt model, look up the table to get the reference width (bso).

4. Determine the minimum allowable number of teeth of the Timing Belt Pulley:

According to the speed of the small pulley (n1) and the model of the synchronous belt, look up the table to get the minimum allowable number of teeth (Z1). The actual number of teeth selected should be greater than or equal to the minimum number of teeth.

5. Calculate the speed ratio:

The speed ratio refers to the ratio of the speed of the timing belt driving shaft and the driven shaft.

Speed ratio = driving shaft speed / driven shaft speed

6. Calculate center distance:

The center distance refers to the distance between the axis center of the timing belt belt driving wheel and the axis center of the driven wheel.

Center distance can be calculated by a specific formula involving the diameters of the driving and driven wheels and the speed ratio.

7. Calculate belt speed:

Belt speed refers to the distance that the timing belt belt moves per unit time.

Belt speed can be calculated from given rotational speed and pitch diameter.

8. Select timing belt material:

According to the working conditions and environmental requirements, select the appropriate timing belt material, such as PU Timing Belt, Rubber Timing Belt, etc.

9. Determine the pulley size:

Through the speed ratio and center distance, the diameter and other related dimensions of the pulley can be calculated.

Author:

Ms. Bella Ma

E-mail:

bella@hengtagroup.com

Phone/WhatsApp:

+8617731169773