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In the conveyor equipment industry, accumulation rollers are quite common. These rollers are used when the weight of the products reaches a certain level, preventing the products from being conveyed; however, once the weight of the goods decreases to a certain level, the equipment can operate normally again. Accumulating roller conveyors, also known as stacking roller conveyors, not only possess the usual capabilities of powered conveyors but also allow goods to stop and accumulate on the conveyor belt while the drive unit is operating, without any significant increase in operational resistance. During normal transportation, the accumulation drum serves to transmit torque; however, when the goods encounter obstacles and stop accumulating, the operating resistance torque exceeds the allowable torque of the drum. As a result, the accumulation sleeve or friction pad slips, and a flexible connection is established between the drum and the drive mechanism. This causes the drum beneath the goods to stop rotating, while only the drive element continues to function. Depending on the product structure, they are generally divided into two main categories: plastic-steel sprocket stacking drums and adjustable stacking drums. The stacking drum and the accumulation drum provide limited stacking force due to sleeve-type friction accumulation, making it impossible to carry out heavy-load stacking; whereas an adjustable stacking drum can meet such requirements. Friction pads made of special materials **increase their wear resistance, thereby significantly extending their service life. The magnitude of the stacking force is adjusted via the nut at the tail end, ensuring a steady and precise stacking force. The design of the end clamping nut prevents the nut from loosening during use, which could otherwise lead to a decrease in the stacking force. Precision ball bearings are fixed within the steel bearing housing by stamping and riveting, ensuring durability. Robust steel bearing assemblies that can withstand greater loads than plastic bearing housings. Powerless roller conveyors are the simplest and most widely used type of conveyor; the rollers operate passively, and the goods are moved and transported by gravity or human effort. Based on the arrangement method, it is divided into inclined and horizontal arrangements. Product features of the stacking drum and accumulation drum: 1. Precision bearings are fixed in steel bearing housings via stamping and riveting, ensuring durability and strength. 2. Robust steel bearing assemblies that can withstand greater loads than plastic bearing housings. 3. A full range of diameter options, providing a wide load-bearing capacity. The installation method determines the complexity of installing and removing the drum, and different installation methods also affect the drum’s load-bearing capacity.