Rollers, also known as drums, are common cylindrical rotatable objects in machinery. It plays a vital role in industrial production. With its unique design and function, it provides strong support for various transmission and conveying systems and processing equipment.

The basic structure of the roller is not complicated. It usually consists of a cylindrical roller body and shaft heads at both ends. According to application requirements, rollers can be made of different materials, such as seamless steel pipes, aluminum alloys, stainless steel, etc., to meet the requirements of corrosion resistance and wear resistance in different working environments. In addition, the surface of the roller can also be coated with rubber, sprayed with paint, etc. to enhance its friction and service life.

The application advantages of rollers are mainly reflected in the following aspects:

First, the roller has excellent support and guiding functions. In the conveying system, the roller can support and guide the object to move along the predetermined path to ensure the stability and accuracy of material conveying. 

Secondly, the roller can significantly reduce friction. By replacing sliding contact with rolling contact, the roller greatly reduces the resistance of the object when moving, making the conveying process smoother and more efficient. 

Furthermore, the roller also has the function of power transmission. In some applications, rollers can be used as driving elements to transmit power from motors or other power sources to other machine parts to achieve the linkage operation of mechanical systems. In addition, rollers are also widely used in the field of material processing. For example, in the papermaking, printing, textile and other industries, rollers are often used to press, dry, and smooth production materials to improve product quality and production efficiency.