Do you know the size of a pulley belt?
Now, we already know the size of the pulley, either from the manufacturer’s data or we can go out into the building and actually measure this. Remember Pulley 1 is always going to be the largest pulley you have, and you’ll see this as we go through the calculations shortly. We also have Pulley 2 and we know the diameter of this pulley as well.
What should be the distance between the pulleys?
The second part, the distance between the pulleys, is if you already know what length belt you need and also you know the diameter of both the pulleys. But you’re not sure exactly what the distance should be between them.
How does a pulley belt work in an ahu?
In this article we’re going to be looking at some pulley belt calculations with worked examples. As shown in the image below, an induction motor is connected via a belt to drive two pulleys which will move centrifugal fan. This is this fairly typical of what you might find to in an Air Handling Unit or AHU.
What kind of cast iron are belt pulleys made of?
Our pulleys are made of Class 30 cast iron with black oxide finish and one setscrew. Made for type A andy B type V-Belts. Select from the bore sizes below. Our pulleys are made of Class 30 cast iron with black oxide finish and one setscrew. Made for type A V-Belts. Select from the bore sizes below.
How is a pulley selected for a belt conveyor?
PROPER SELECTION OF A CONVEYOR PULLEY When selecting a pulley for a belt conveyor application, specifications will be determined by addressing the following steps: STEP 1 The Face Length of the Conveyor Pulley STEP 2 The Anticipated Belt Tension of the Conveyor System STEP 3 The Outer Diameter & Shaft Diameter of the Conveyor Pulley
How big of a pulley do I need for bulk handling?
In bulk handling applications, an adequate pulley face length is one that is 2” or 3” greater overall or 1” to 1.5” greater on each end than the overall width of the conveyor belt. Unit handling applications may warrant deviation from these guidelines.
What causes excessive deflection of a pulley shaft?
Excessive shaft deflection occurs when shaft diameter is improperly sized for the demands of an application. Although it may appear as a potential solution, selecting a shaft material with greater strength characteristics will have virtually no effect on its stiffness as it pertains to shaft deflection.
How does catenary load affect a conveyor belt?
Catenary Load: The mechanism designed to support the weight of the conveyor belt in the return section of a conveyor will impact the amount of tension experienced by the pulleys. This type of belt tension is produced by catenary load which is a byproduct of the level of catenary sag existing in a conveyor belt.