The working level of an electric hoist refers to the load and frequency of use it bears during operation. The higher the working level, the more intensive the use of the electric hoist, and the shorter its working life. According to the International Organization for Standardization (ISO), the working levels of electric hoists are divided into eight levels from M1 to M8, with M1 being the lowest level and M8 being the highest level.
Then in actual production, the two working level products of M4 and M5 are the most widely used. Why is this? Let’s analyze the reasons.
The lifting weight of M1 to M3 is too small
This is the parameter table of electric hoists from M1 to M8
M1 and M2 working levels can only lift products below 1 ton, and their application range is too narrow to meet most industrial needs.
The working intensity of M3 electric hoist is also very low and it is only suitable for general industrial environments, including general indoor use and dry places.
The M4 electric hoist has a medium working intensity and is suitable for more demanding industrial environments, including places with high temperature, humidity, dust and corrosive gas conditions.
The M5 electric hoist is suitable for very harsh industrial environments, including places with heavy loads, frequent starting and braking, impact vibration and other conditions.
M4 and M5 working levels have greatly improved their working range and are therefore the most widely used
The price of M6 to M8 is too high
If we follow the same logic, the M6 level and above can meet more application scenarios, but the M4 and M5 working levels meet most of the usage scenarios, and the price of the M6 level begins to increase greatly. M6 will increase by 20-50%, M7 will increase by 50-100%, and M8 will increase by more than 100%. Therefore, the cost performance is not as good as M4 and M5
Taking all the above factors into consideration, electric hoists with working levels of M4 and M5 are more affordable, have a wider range of applications, are easier to maintain, and have relatively low safety requirements, so they are more widely used in industrial production.