Coupling balance components and unbalance sensitivity

　　The standard grading table of coupling balance grades is shown in the following table. The large deviation from the axis of rotation caused by the principal axis of inertia at the position of the balance surface is expressed in large root-mean-square micrometers, and its value is the coupling balance standard calculated according to the AGMA method. Grade coupling balance grade The large displacement of the principal axis of inertia on the balance surface (root mean square) The large displacement of the coupling balance grade of the principal axis of inertia on the balance surface.
The balance level of any coupling component is determined based on the square root of the possible value of the eccentricity of the center of gravity between the main axis of inertia of the coupling and the axis of rotation.The imbalance is expressed in microns.The potential unbalance factors of the coupling components have been introduced above, and the various steps of determining the balance levels of various types of coupling components and calculating the balance are shown in the calculation examples.
(1) The coupling chooser should choose the appropriate balance level of the coupling. The rigidity of the bearing, bearing seat and base: For rotating parts, the mechanical transmission system has a flexible base or bracket, which will affect the unbalanced state of the coupling. More sensitive.
(2) Whether the unbalanced amount of the coupling can meet the needs of any type of rotating system depends on the performance of each special connected machine, which is determined by the manufacturer of the connected machine.It is recommended that each machine manufacturer prepares appropriate flexible coupling balance while providing its equipment;
(3) If the appropriate coupling grade cannot be obtained from the machine manufacturer. Axial offset: If the shaft extension or flexibility of a certain machine is long, it is more sensitive to the unbalanced state of the coupling.The relationship between the bearing load caused by the weight of the coupling and the total load of the bearing: If a machine uses light-loaded bearings or the coupling load is basically caused by the cantilever load of the coupling, the machine does not affect the coupling. The balance state is more sensitive. For mechanical devices with cantilever rotors or cantilever loads, the unbalanced state of the coupling is usually more sensitive.