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The working class of a crane refers to the degree of circulation and full load that the crane is allowed to allow during working hours. The working class of the hook crane is divided into three levels and seven items: A1-A3 (light level); A4-A5 (intermediate level); A6-A7 (heavy level). The working class of the crane is briefly described as follows:

1. Light (A1-A3): Rarely lift rated loads, generally lift light loads, mostly used for installation and maintenance of equipment in power stations or other workplaces, or workshops and warehouses where work is not commonly used.

2. Intermediate (A4-A5): sometimes lifts rated loads, generally lifts medium loads, and is used in heavy-duty workshops and garages, such as general machining and general assembly workshops.

3. Heavy grade (A6-A7): lift the rated load as usual, generally lift heavier loads, used in heavy work workshops and warehouses, such as long-term frequent lifting of heavier items and metallurgical workshops .

the crane's working class is determined by two conditions:

1. The frequency of use of the crane is called the crane utilization level.

2. The size of the load that the crane bears is called the load state of the crane.

The crane has a certain number of working cycles during its useful life. The working cycle of a crane operation is the entire operation process from the preparation of lifting objects to the next lifting of objects. The total number of working cycles represents the utilization degree of the crane, which is one of the basic parameters of the crane classification.

The total number of working cycles is the sum of all working cycles of the crane during its specified service life. When determining an appropriate service life, economic, technical and environmental factors are considered, as well as the effects of equipment aging.

Nowadays, the working class is also an important parameter of a crane. When ordering a crane, you must not only consider whether the tonnage is satisfactory, but also consider the use of the crane to purchase suitable equipment.

Flagcrane have a professional technical team, which can design and produce standard and non-standard crane hoist and spare parts. If there are other special requirements. it can be customize according to user needs and negotiate by both parties.