When the engine reaches the maximum speed, the mixing drum speed should be lower than 15rpm. Otherwise, the drum body and mixing blade will wear out prematurely. When working, the rotation speed of the drum should be adjusted by Concrete Mixer Truck Drum Roller the operating system. When unloading, the rotating speed of the drum should also be adjusted to more than 10rpm to ensure the quality of the mixture.
There is a round nut on the drum for setting and adjusting the slack of the bearing.The mixing blades are more prone to wear, so they should be inspected once a year and preventive maintenance should be carried out every two years.No leakage is allowed between the inlet of the mixture and the drum. The gap between the feed inlet and the drum should be less than 5mm. If leakage occurs, repair it according to different mixer truck models. For example, for some models, you only need to replace the wide rubber strap. Some models are repaired by welding thin steel plates larger than a semicircle.