The physical structure of American and European standard pulleys is different
As usual, start with the picture above. In the above picture, the left side is an American standard pulley, and the right side is an European standard pulley. At first glance, there is no difference between the two, but upon closer inspection, it can be observed that their physical structures are actually different. American standard pulley, also known as American standard expansion sleeve pulley, is divided into two parts: pulley and expansion sleeve; European standard pulley, also known as European standard cone sleeve pulley, is divided into two parts: pulley and cone sleeve. The appearance of the expansion sleeve is different from that of the cone sleeve, as the cone sleeve has a slope.
The models of American standard pulleys and European standard pulleys are different
In addition, when purchasing pulleys, enterprises definitely need to know the model of the pulley in advance. By using the model, American standard pulleys and European standard pulleys can be intuitively distinguished. Let's take a look at the models of these two types of pulleys.
1. American standard pulley models: 3V, 5V, 8V
2. European standard pulley models: SPZ, SPA, SPB, SPC
Additionally, it should be noted that there are some commonalities between American standard pulleys and European standard pulleys, which makes it possible to use them interchangeably.
