Due to the large range of body Raymond body vibration caused by unbalanced specific reasons

Raymond there are vibrations do not know because of what, check out the bolts, as well as a contact point and roller are not abnormal phenomenon, which is what causes it? After a detailed examination revealed an imbalance because the mill vibration is caused by misalignment of the internal structure, resulting in mill vibration. Misalignment phenomenon in mill industry is more common, and very important, because it is applied to increase the rotational force on bearings and seals abnormal stress. Misalignment types are: parallel misalignment, angular misalignment, the parallel and angular misalignment. The so-called internal imbalances Raymond mill is grinding internal quality and geometric centerline does not coincide with a fault will result. There are three general types of imbalance: Static imbalance or unbalanced force, torque imbalance or even imbalance and dynamic imbalance. As the rotor rotates, its "center of gravity" to generate a centrifugal force acts on the bearing, the size of the force with the rotation of the rotor and stable change. Raymond mill unbalanced representation of the spectrum: the sinusoidal; axis orbit is circular or elliptical; 1X frequency based; the main radial vibration; amplitude with increasing speed increases; too critical speed resonance Peak; cantilever rotor imbalance horizontal and vertical axial vibration are great. Further, if the center of rotation pulleys, gears, bearings or rotor centerline offset geometric eccentricity occurs. Most of all axis misalignment angle Raymond mill misalignment and parallel misalignment combination. General principle is: the diagnosis should be based on the vertical axis and 1X speed increases, changes in the vibration level corresponding to judge.