Conveyor Chains

The function of a Conveyor Chain is to drive the system by transmission of power. It is mainly used when continuous transport of materials for some distance is undertaken. To suit the handling requirement for each material, case specific attachments from the large variety that is available are chosen and added on.

Usually the chains are made from blocks, either solid or laminated. They are connected together by pins and side plates. Deep-plates provide more carrying capacity. The chains may be welded or non-welded. Sprockets, which have a number of teeth, synchronize with the slots in the chain and move it. In some patterns, the sprockets are driven from one side only. But for circuitous lines they are driven from both sides.

A chain system, including its parts like sprockets, pins, rollers and, sleeves or plates, can be made from carbon steel, stainless steel and plastic. Steel parts are normally heat treated for greater toughness. The choice of the material used in manufacture depends on the type of application. A system meant for the mining industry, for instance, would be different from the one that is installed for a tire factory. For bakery or vulcanizing operations the chain has to withstand high levels of heat. In a freezing plant the conditions are just the opposite.

To make the chain corrosion resistant, nickel coating is applied. The product is usually supplied with or without lubricants. Maintenance-free pre-lubricated chains are also available. These not only reduce operating costs, but also prevent contamination by oil dripping on the materials carried.

The factors to be considered while selecting the chains and attachments include the type of material transported, size and weight, distance involved, speed at which the system operates, temperature, contact with corrosive materials and noise level. Plastic parts normally generate less noise than metal ones.

Check with the manufacturers and your consultant before making the investment decision. And remember that all chains and related products have to conform to the standards set by the U.S. Government and the National Association of Chain Manufacturers.