A conveyor chain is chain that has been designed specifically for chain conveyor systems. It consists of a series of journal bearings that are held together by constraining link plates. Each bearing consists of a pin and a bush on which the chain roller revolves.
Each type of conveyor chain is available in a range of different pitches. The minimum pitch is dictated by the need for adequate wheel tooth strength and the maximum is determined by plate rigidity. The maximum pitch can be exceeded if the chain is strengthened with bushes between the link plates and there is still enough clearance with the wheel teeth.
Attachments are fitted to a conveyor chain to adapt it for a particular conveying application. Conveyor chain attachments are typically made from steel but scrapers made from multi-laminated beech are becoming increasingly common, especially in the cement, biomass and recycling industries.