In the field of industrial production, air shafts play a vital role. They are important devices for realizing functions such as material transportation and winding. Understanding the classification of air shafts will help companies choose suitable products according to their own needs.
From the perspective of shaft head type, air shafts are mainly divided into cantilever air shafts and double-head air shafts. These two types of shaft heads differ in structure and application scenarios. The cantilever air shaft has a simple structure and has advantages in some specific unilateral operations; the double-head air shaft is widely used when more stable support and higher loads are required.
From the type of external protrusions, common ones are tile-type, plate-type air shafts, cross-key air shafts, and full-length key air shafts. The tile-type air shaft can provide a better tightening effect in specific applications; the plate-type air shaft inflates evenly and can balance the force, for example, when 6 plates are inflated at the same time, the force is more balanced; the cross-key air bearing has a large gravity, a single key bar is raised, and can bear a large weight; the key bar of the full-length key air shaft is different from the cross key. It has a key bar raised on the inflated part, with high runout tolerance accuracy and strong load-bearing capacity.
According to the size type, there are many sizes such as 1.5 inches, 2 inches, and 3 inches. Among them, 3-inch and 6-inch air shafts are commonly used sizes that can meet the basic needs of most industrial production.
In addition, there are some other types, such as key-type air shafts (also called cross-key air shafts), plate-type air shafts, full-length key air shafts, differential shafts, etc. The differential shaft has a special structure, consisting of multiple differential rings, with balls installed in the differential rings. It uses the principle of differential ring slippage and is mainly used for winding of slitting machines. It is also used for unwinding in special occasions, so that multiple rolls of materials on the shaft always maintain stable tension for winding and unwinding.
Different types of air shafts have their own characteristics. Enterprises should carefully select the most suitable air shafts according to actual production needs, equipment specifications, and specific requirements for material expansion, winding and unwinding.