Air-cooled electric drum:

The characteristic of this kind of electric drum is that the electric motor does not need to be cooled by oil, and it can be divided into forced air cooling and natural air cooling by conduction, radiation and convection of wind.

Oil-cooled electric drum:

This kind of electric drum is also called an indirect oil-cooled electric drum. There is a certain amount of cooling oil in the electric drum. Because the drum body continuously rotates, the oil scraper on the drum body continuously pours the oil onto the motor and gear, taking away the heat generated by the motor and gear when it is working, and reducing the heat. It is transmitted to the wall of the roller body to accelerate the heat dissipation of the motor and lubricate the gears. The key to oil-cooled electric drums is that no oil is allowed to enter the inside of the motor.

Oil-immersed electric drum:

Oil-immersed electric drums are also called direct oil-cooled electric drums. This type of electric drum allows oil to enter the motor and directly contact the motor rotor and stator windings. The heat generated during their work is transferred by the continuous rotation of the drum body. To the inner wall of the drum. This structure has better heat dissipation effect, but relatively high requirements on the quality of lubricating oil and the motor.