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An electric hoist is a type of lifting device that is powered by electricity. It is designed to lift and move heavy loads vertically or horizontally in various industrial and commercial settings.

Do you know what are the work duty classification of electric hoist? And what does they mean? 

The work duty for electric hoists include M3, M4, M5, M6, M7, and M8. The higher the level, the greater the workload on the motor, the better the motor's performance, and the longer the service life. The working wear level primarily reflects the operational load and frequency of use of the electric hoist.

In the same operating environment and load conditions, if an M3 level hoist is used for 1000 hours, an M5 level hoist can be used for 4000 hours, and an M7 level hoist can be used for 16000 hours. If the hoist is frequently operated at full load and used frequently, a higher working and wear level is required.

A higher working wear level implies a greater workload for the motor, demanding better motor performance, and sometimes requiring specialized motors. The working wear level of an electric hoist does not directly correspond to the working level of the motor. Higher-level requirements for electric hoists also impose higher requirements on electrical components and other accessories.

Currently, the commonly used wear level for electric hoists is around M5, which offers advantages such as simple operation, lightweight, stable performance, and long service life. The working wear level of metallurgical electric hoists can reach M5 or M6, and they are equipped with dual protection devices. Additionally, heat insulation plates are installed below the drum to isolate the high thermal radiation emitted by furnaces and molten metals.

Therefore, when buying an electric chain hoist, the working duty is an important parameter that must be considered. Combining the working conditions to choose the most applicable is the most economical, safest and wise choice!