Chapter 8 – Chain Drives*

Publisher Summary Chain drives are an important part of a conveyor system. They are used to transmit needed power from the drive unit to a portion of the conveyor system. This chapter explains the various types of chains that are used to transmit power in a conveyor system and the advantages and disadvantages of using chain drives. It also explains the correct installation procedure for chain drives, how to maintain chain drives, and how to calculate speeds and ratios that will enable one to make corrections or adjustments to conveyor speeds. It shows how to determine chain length and sprocket sizes when making speed adjustments. Chain drives are used to transmit power between a drive unit and a driven unit. Chain drives can consist of one or multiple strand chains, depending on the load that the unit must transmit. The chains need to be matched with the sprocket type, and they must be tight enough to prevent slippage. This chapter describes chain selection, that is, selecting a plain or detachable-link chain, a roller chain, or sprockets. It also explains chain installation, chain length, multiple sprockets, and chain speed and provides preventive maintenance procedures.