Types of Chain

Hosting Chain: This type of chain is used for lower speed. It consists of oval links as shown in Figure 15.9.

Figure 15.9 Hosting Chain

Conveyer Chain: Conveyer chain may be detachable/hook joint type/closed end pintle type as shown in Figure 15.10. The sprocket teeth are so shaped and spaced that the chain could run onto and off the sprockets smoothly and without interference. Such chains are used for low speed applications.

Figure 15.10 (a) Hook Joint Type Conveyer Chain and (b) Closed-end Pintle Type Conveyer Chain

Power Transmission Chains

Block Chain: This is used for power transmission at low speed such as bicycle, motor bike, etc. (Figure 15.11).

Figure 15.11 Block Chain

Roller Chain: A common form of roller chain is shown in Figure 15.12. A bush is fixed in inner link whereas the outer link has a pin fixed to it. There is only sliding motion between the pin and the bush. The roller is made of hardened steel and is free to turn on the bush. A good roller chain is quite and wears less in comparison to a block chain.

Figure 15.12 Roller Chain

Silent/Inverted Tooth Chain: Roller chains can run at very high speed. But when maximum quietness is required, inverted tooth chains are required. It has no roller; the links are so shaped as to engage directly with the sprocket teeth and included angle is either 60° or 75° (Figure 15.13).

Figure 15.13 Silent or Inverted Tooth Chain