Roller Beds The roller bed is well suited for transporting heavier unit loads with less horsepower than required by slider beds. Slider Beds The trough bed belt conveyor has an integrated guard rail which is ideal for trash conveyor, handling chips, slugs, scrap wood, paper waste, boxes, packages, and cartons. The standard slider bed belt conveyor is one of the most economical options for transporting conveyors. The box style slider bed is another option which provides a smooth surface along the side of the conveyor. The box style slider bed is ideal for workers stationed beside the conveyor.