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Conveyors Basics
   

 

 

Conveyors are usually classified according to their type (ex: roller, belt, slat, etc..), or sometimes according to the material being transported ( ex: bulk).

Conveyors come in many forms and designs, the most common of which are listed in the table below.

 
Type
Characteristics
Application
Roller Gravity Conveyors Horizontal or slightly inclined rollers carry unit loads. Low cost, low maintenance. Hand driven or gravity operated. Transportation of unit loads, boxes, barrels, drums, cartons , occasionally sacks.
Powered Roller Conveyors Same as above except rollers are motor driven. Drive is by sprockets and chains, tangential belts , or round belt. Same as above. Some types could be used in applications requiring accumulation.
Slider Bed Belt Conveyors Belt is supported on a slider bed. Low cost Lightweight unit goods or bulk material loads .
Roller Bed Conveyors Belt is supported by rollers. Medium to heavy loads,
Chain Conveyors Loads are carried on chain strands, running on a wear resistant polymer. Used with relatively heavy loads and pallets. ( 1-2 tons /unit) Assembly lines, pallet, unit loads transport.
Slat Conveyors Plastic or Stainless steel slats running on wear resistant polymer. Handling of bottles, or small similar items.
Overhead Conveyors, Manual. Continuous transportation of unit loads along a closed path. The carts carrying the loads are pushed or pulled by hand. Paint shops, assembly lines, garments industry, meat industry, assembly lines.
Overhead Conveyors, Driven. Same as above, but could also change levels . Could also be used for bulk loads. Same as above.
Trough Conveyors. Arrays of 2 or more rollers, elevate the sides of a rubber or polymer belt to confine bulk materials to the center of the belt. Could reach lengths of several kilometers. Can change direction and level. Bulk materials handling.
Load Carrying Car Conveyors, load Towing, and Walking Beam Conveyors Loads are carried on carts or special jigs, resting on guides, and towed by chains either overhead or running in trenches in the floor. Assembly lines, Heavy items, automotive industry, warehouses.
Bucket Conveyors Transportation on vertical or highly inclined paths Elevating bulk , cement, flour, chemicals, sand, grain, peat, etc..
Shelf, and Cradle Conveyors Vertical transportation of unit goods on shelves. Could be used across several floors, allowing intermediate loading and unloading. Elevating or lowering unit loads ,such as bags, bales, boxes, machine parts, etc....
Screw Conveyors Can be horizontal or inclined, used for short distances up to 40 m. Suitable for dusty, or hot materials. Transportation of pulverized, granular, or small sized lumpy materials. Not suitable for sticky slumping or abrasive materials.
Oscillating Conveyors Transportation of hot, toxic or dusty materials. Not usable with sticky materials, or fine pulverized loads. Transportation of bulk loads, occasionally for unit loads.
Hydraulic and Pneumatic Conveyors Fluids or air carry the material in pipes. High throughput capacity. Bulk loads
   
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