Pitch circle diameter (pcd) = (no of teeth * pitch)/ π.

How to measure pulley size. (diameter of driver pulley) x (revolutions of driver pulley) / (diameter of driven pulley) = (revolutions of driven pulley) tip you can use algebra to reorganize the equations and find the. To calculate the size of the pump pulley, you would need to divide the size of the drive pulley on the engine by the ratio we just calculated in the above problem. For this, you need to evaluate the outside diameter of a pulley.

Pullies are measured by diameter For example, if pulley 1 is. First, measure the outside diameter (od) of the pulley.

Now, you may get confused about how to measure it. For instance, the sum of the two pulleys, in the above electric motor example is 4 inches + 6.5 inches = 10.5 inches. The belts, chains, or rope sizes that will fit into the pulley.

The pitch circle diameter of the timing belt pulley drive is the main parameter for the calculations. If you know any 3 values (pulley sizes or rpm) and need to calculate the 4th, enter the 3 known values and hit calculate to find the missing value. It is considered for both the timing belt.

With a couple quick measurements you can plug the numbers into this formula to get your belt size! The measurement is from the center of the driver shaft holding the driver pulley to the center of the driven shaft holding the driven pulley. Allows the user to calculate the center distance, driven shaft speed, rim speed and requirement for dynamic balancing of a given belt and pulley arrangement.more.

To calculate the size of the pump pulley, you would need to divide the size of the drive pulley on the engine by the ratio we just calculated in the above problem. For timing pulleys, this is the measurement between the flanges. C = center to center distance between shafts d 1 = pitch diameter of larger pulley d 2 = pitch.