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How to choose duty group for cranes

The duty group of a crane determines its ability to handle different loads.

Date: 2023-08-04 Share:

The European Materials Handling Federation, known as ‘FEM’, are a standards body for the material handling industry and are publishers of the FEM Hoist Duty Classifications.      Selecting the correct hoist for your operation is important, primarily for safety but also for operational efficiency and to represent value for money. The selection should be made only after considering the type of duty (load spectrum) and the average daily operated time, to ensure the hoist you choose is best suited to your operation.

When it comes to choosing the right duty group for cranes, there are several factors that need to be taken into consideration. The duty group of a crane determines its ability to handle different loads and work for extended periods of time without causing any damage or malfunction. Here are some important factors to consider when selecting the matched duty group for cranes:

1. Load capacity: The first step is to determine the maximum load that the crane will be required to lift. This includes both the weight of the load and any additional equipment or attachments that may be used. It is essential to choose a crane with a duty group that can handle the maximum load safely and efficiently.

2. Working hours: The duty group of a crane also depends on the number of working hours it will be subjected to. Cranes that are expected to work continuously for extended periods of time, such as in construction sites or manufacturing plants, should have a higher duty group. On the other hand, cranes used for intermittent or light-duty work may require a lower duty group.

3. Duty cycle: The duty cycle refers to the frequency and duration of crane operations. Cranes that are required to lift heavy loads frequently or for extended periods of time need to be equipped with a higher duty group. This ensures that the crane can handle the workload without overheating or experiencing any mechanical issues.

4. Environmental conditions: The environment in which the crane will be operating plays a crucial role in determining the appropriate duty group. Factors such as temperature, humidity, dust, and corrosive substances can affect the performance and lifespan of the crane. Cranes operating in harsh environments may require a higher duty group to withstand these conditions.

5. Safety requirements: Safety should always be a top priority when choosing a crane duty group. It is important to select a duty group that not only meets the load requirements but also ensures the safety of the operators and other personnel. The crane should be able to handle the load without compromising stability or risking any accidents.

In conclusion, selecting the right duty group for cranes requires careful consideration of factors such as load capacity, working hours, duty cycle, environmental conditions, and safety requirements. By taking these factors into account, you can ensure that the crane is appropriately matched to its intended workload, maximizing efficiency and safety.