Pulley is an indispensable parts of belt conveyor and conveyor which is divided into drive and driven pulley. It is used ususally in the packaging and transportation equipment, and other transmission systems, which made of seamless steel pipe. But also depending on the different processes need to use such as aluminum alloy 6061T5, 304L / 316L stainless steel, 2205 duplex stainless steel, cast steel, solid forging alloy steel cake material.

Roller conveyor accessories of the carbon steel drum production is mainly pulley body car、junior school static balance、shaft head interference welding. If the trade toleranc
such as such as roundness, cylindricality and straightness required less than 0.2mm, it also need a cylindrical grinding machine or roll bed grinding. The surface hardness requirements are required to increase the heat treatment process.

After the drum is formed, out of rust and corrosion, wear and support needs, also surface treatment or coating such as painting needed, galvanizing, TEFLON spraying, rubber package, chrome, ceramic spraying and oxidation processes. According to the size of the classification, there are large pulleys such as papermaking machinery (the length can reach more than 10 meters, the diameter of 1500mm or more), a small pulley on a belt conveyor such as an automatic assembly line (usually within a meter long), diameter is also 159mm. According to the role of division, some are ensure the accuracy of transmission, such as a pulley on a digital laser printer, a calendering roll, such as a papermaking machine, which acts as a filter,a support pulley with a high dimensional accuracy, a roll with heat exchange requirements, also a heavy press filter pulley , etc.

Carbon steel drum diameter can be selected: 25mm、32mm、38mm、42mm、50mm、57mm、60mm、76mm、80mm、89mm. pulley material has a variety of galvanized steel such as carbon steel、carbon steel galvanized. pulley type selection no power pulley 、single chain drum、double chain drum、conical drum、groove pulley. Conveyor pulley fixed way: spring into the type, the internal shaft type, all the flat tenon, through pin pin hole type. The main reasons pulley brake failure are:
1, the size of the pressure is abnormal, such as abnormal pump, the trachea is leaky or blocked.
2, brake brake block is damaged.
3, the drum on both sides of the brake disc is defective.
4, the operation of the brake switch system is faulty, so that poor transmission of brake commands.
5, power transmission system is timely cut off the power.
6, for belt conveyor friction brake, should check whether the friction belt is loose or friction factor decline, should be adjusted or replaced.