Dock levelers with one cylinder are more likely to be lopsided in the case of an emergency stop when compared to dock levelers with two cylinders. This danger exists if the weight occurs only on one side, i.e., when the forklift drives off-center. In this case, the goods could fall off the forklift. In the case of two cylinders, the hose safety devices are activated almost simultaneously. Thus, there is no lopsidedness of the platform.
Two-cylinder systems have cylinders with smaller diameters. This results in higher pressure. With two slimmer cylinders of the appropriate diameter, you can achieve the same pressure as with just one thick cylinder. The hydraulic cylinders must be matched to the total construction. As regards dimensions, the type of dock leveler, the position of the cylinders, and the hose safety device play a decisive role. This is true for both the systems.