A wide variety of chains are available for the purpose of material handling, conveying, and elevating. An accurate assessment of the basic conditions in which the chain will function is essential for optimum performance. In general, the basic steps of conveyor chain selection are as follows:

• Select a chain conveyors type appropriate for the material being handled.


• Choose the chain type best suited for the conveyor style selected and the material being handled.


• Select the specific chain size necessary to successfully handle the loading conditions of the conveyor, attachment spacing, space limitations, and other service conditions that are encountered

There are, in general, nine types of chain conveyors. The material being handled and the service environment typically determine which type is chosen:

The chain runs in tracks and the load is carried directly on the chain.

Drag Conveyors

One or more endless strands with or without integral flights moves material in a trough or pan.

Apron Conveyors

Die formed steel plates or pans mounted on two or more strands of chain. They are good for impact, abrasion and high temperature applications.

Slat Conveyors

Two or more strands of chain with slats attached at intervals. This is used primarily for unit handling.

Scraper Flight

One or two endless chains with flights attached to push material in a trough.

Cross Bar

Two strands of chain connected by cross-bars, which can be arranged in paths from inclined to serpentine.

Trolley and Tow

An endless strand of chain is suspended from an overhead track with carrying attachments at intervals. Tow conveyors have pickups to engage truck masts.

Pusher Chain

One or more strands of endless chain are utilized with attachments to push the load. Load slides or

rolls on rails. The chain does not carry the load.

Carrier Chain

Attachments are connected to part of the chain and form a carrying surface for an individual suited when chain carries materials.

• Smoother operation, less pulsation.

• Less friction — allows longer centres, smaller motors, and lower operating costs.

• Less horsepower required.

• Not suited for “dirty” applications where foreign materials

  can jam rollers.

Chain Sliding

• Best suited when conveyor deck supports materials and chains carry, push, drag or scrape.

• Rugged construction — ideal for impact loadings.

• Greater horsepower required.

General Conveyor Chain Types

• Roller Conveyors

• Cast Combination Chain

• Steel Bushed Rollerless

• Drop Forged Rivetless Chain

•Welded Steel Mill Chain

• Bar/Pin Chain