What is the rated lifting capacity of the lifting appliance?
3 Answers
The rated lifting capacity of the lifting appliance is 25 tons. Safe use of lifting appliances and slings: First, when using lifting appliances and slings, they should be suitable for the type of object being lifted, environmental conditions, and specific requirements. Second, before operation, a comprehensive inspection of the lifting appliance and slings should be conducted to confirm that all functions are normal and that the hanging connections are secure before putting them into use. During the lifting process, the weight of the object being lifted must not exceed the rated lifting capacity, and the slings must not exceed their maximum safe working load. The slings and lifting appliances must not be damaged during work, and protective padding can be added between the object being lifted and the lifting appliances or slings if necessary. Calculation method for lifting tonnage: It is calculated based on the maximum horizontal distance. The so-called maximum horizontal distance refers to the horizontal distance from the hook to the object being lifted under normal lifting conditions with the crane boom. In general, it is the horizontal distance from the lower axis of the crane boom to the hook. The maximum horizontal distance can be determined based on the actual conditions of the construction site, such as the crane's standing position, the foundation position of the equipment, and the placement of containers.
As a seasoned mechanic who works with cars all year round, I've used hoists to move countless engines and transmissions. The rated lifting capacity is usually marked with clearly visible numbers on the hoist body, for example, general engine hoists typically range from 1.5 to 2 tons, depending on the type of steel cable or chain used, with significant variations between different models. In actual operation, I always check the product label first to confirm the maximum load capacity—safety comes first, as overloading can cause unexpected chain breaks or even injuries. In a workshop environment, regular inspections for wear and corrosion are crucial; don’t cut corners and overlook these details. The rated value is just a reference; you also need to account for the weight of additional tools and leave some buffer room when using it.
I have been engaged in automotive safety training for many years, always emphasizing that the rated lifting capacity of a sling is the maximum safe load value specified by the manufacturer, usually measured in tons or kilograms. In maintenance scenarios, common sling capacities range from 0.5 tons to over 5 tons. Selection should be based on the actual load—don’t assume higher capacity means foolproof safety. For example, a small engine may only require a 1-ton sling, while larger truck components might need sturdier equipment. The safety factor is crucial, and labels must be clearly legible. If they are faded or damaged, the sling should be immediately taken out of service. Make it a habit to verify the load before each operation to prevent accidents.
