When we say roller, it can also be called roller. It has a strong application in rotary screen printing machine and digital printer, as well as mine conveying equipment, paper making and packaging machinery and other kinds of transmission and conveying system and sorting and conveying equipment. For the roller itself, it is actually a cylindrical part.

For the roller, it can be divided into driving roller and driven roller according to the purpose; According to the drive way to divide the words can be divided into power drum and non-power drum, its power drum, in fact, can also be divided into single chain wheel drum, double sprocket wheel drum; According to its structure, it can be divided into cylindrical drum and cone drum.

For rollers, it is generally made of seamless steel tube. However, sometimes the words are also used because of the requirements of the process such as aluminum alloy 6061T5 and 304L/316L stainless steel and other cast steel pieces, there is also a solid forging alloy steel core, actually it can also be used as material.

After roller forming, we should pay attention to its general conditions will have the need of rust, corrosion protection, wear resistance and support, and may have the need of surface treatment or coating. For its coating, the general situation is paint and galvanized, and is including TEFLON coating, coating rubber, and is through chromium plating, ceramic coating and oxidation and other processes.

In terms of its size, some of them are relatively large, such as the roller used in papermaking machinery, whose length can reach more than 10 meters, but there are also small ones, such as the flat roller commonly used in belt conveyor on automatic assembly line.

For the roller, if we according to its role to carry on the division. It has to ensure the accuracy of transmission, that is, we are common in the digital laser printer of this kind of roller; Still have a lot of pressure filter effect, that is, in the paper machine we commonly used on the calender roll; Still have some requirements for dimensional accuracy is not high, simply used to do support role of a roller.