CHAIN DRIVES

Chain is a series of connected links which are typically made of metal and is used where no slippage is required. A chain may consist of two or more links. The chains on the basis of their use is classified into following three groups.

Hoisting and hauling chains:

These chains are used for lifting, lowering, pulling or dragging operations. They are generally of oval or square shape. Figure 5.9 shows the diagrammatic representation of the same

Fig 5.9 Hoisting and Hauling chains

Conveyor chains

These chains are made from malleable cast iron and are used for transporting material from one place to another on a conveyor system. The cross section of conveyor chain is shown in the figure 5.10

Fig 5.10 Conveyor chains

Power transmitting chains

As the name suggests these chains are used for power transmission. They may be of categorized as block chains, bush roller chains and inverted tooth or silent chains

Fig 5.11 Power transmission chains