Each stage hand chain hoist is marked with its rated load capacity in a prominent position. This value is a safety limit determined based on multiple factors such as the equipment's material strength, structural design, and braking performance. Operators must strictly abide by this limit and are strictly prohibited from overloading under any circumstances.
Overloading is extremely hazardous: on the one hand, it will far exceed the load-bearing limit of load-bearing components such as chains and hooks, leading to chain stretching, deformation, or breakage, or damage to hooks and pins, which in turn may cause load falling accidents; on the other hand, overloading may cause failure of the equipment's braking system, making it impossible to effectively control the lifting and lowering of the load. At the same time, it will also cause severe damage to transmission components such as the gearbox and bearings, shortening the service life of the equipment. More seriously, falling loads or equipment out of control may directly result in casualties of operators and surrounding personnel, triggering major safety accidents. Before operation, operators must accurately calculate the weight of the load. If the weight is unknown, other methods should be used to weigh it first, and the operation can only be carried out after confirming that it does not exceed the rated load capacity of the equipment.