A DK conveyor chain includes a construction, plus the names on the parts are stated in the drawing. These components have functions specified under.
Pins
Pins assistance every one of the load acting about the chain together with plates, and once the chain is engaged together with the sprockets, they slide together with bushings as bearings. They are really topic to wear and especially will have to 
have high shear power, bending power and wear resistance. Hardened and tempered difficult steel, carburized steel, or induction-hardened steel is utilised.
Rollers
Rollers protect the chain from shocks using the sprockets, and when the chain is engaged with all the sprockets, the rollers bend the chain smoothly and act to reduce the resistance when the chain runs on the rail. They are demanded to have substantial shock fatigue strength, collapse strength and wear resistance. Hardened and tempered difficult steel, carburized steel or induction-hardened steel is employed.
Bushings
Bushings are positioned concerning pins and rollers and act as bearings for both the pins and rollers not to transmit the load obtained from the rollers directly to your pins when the chain is engaged with all the sprockets. They are needed to possess substantial shock fatigue power, collapse strength and wear resistance, and in general, carburized steel is used.
Plates
Plates are subject to repeated stress of the chain and sometimes to huge shocks. They are really demanded to have high tensile strength, and particularly higher shock strength and fatigue power. Large tensile steel is utilized for standard chains and heat-treated alloy steel for heavy-duty chains.
T-pins
T-pins avoid the outer plates from disengaging from the pins. They are made of soft steel given that pins are usually pressed-in the outer plates and thus no significant force acts over the T-pins.