Unpowered conveying is the simplest and most widely used conveying method, where the rollers operate in a passive state and the goods are transported by gravity or manual pushing and pulling. Usually arranged horizontally or diagonally.

In power transmission, goods can be transported accurately, smoothly, and reliably at a specified speed. Depending on the transmission method, it can be divided into two categories: "belt transmission" and "chain transmission".

Also known as stacking conveyor, it not only achieves the function of power transmission, but also allows the goods to stop accumulating on the conveyor line while the driving device is working, and the running resistance does not increase significantly.