Mixing Drum or Pan: The container where the mixing takes place.
Motor/Engine: Provides the power to rotate the drum. This can be electric, gasoline, or diesel-powered.
Chassis: The frame that provides structural support and stability to the entire machine.
Discharge Mechanism: The system (tilting, reversing, or a chute) used to unload the finished concrete.
Water Tank: A separate tank to hold and dispense water into the mix.