Do all rotors need to be dynamically balanced?
Thread Content
Is there such a saying: if the rotor’s weight is below a certain amount of kilograms, its rotation speed is below a certain number of revolutions, its structure is special, or its dimensions (diameter and total length) are below a certain value, then it is not necessary to perform dynamic balancing?
The front and rear axles and the bottom bracket rotor of the bicycle are not used for dynamic balancing
Some rotors need dynamic balancing, while others need static balancing
When the rotational speed isn’t particularly high, I recall that as long as the ratio of the impeller’s thickness to its diameter is greater than a certain value, static balance is sufficient; if it’s below that value, dynamic balance is required
5 Rotor balancing methods 5.1 Single-plane balancing 5.1.1 Single-plane (static) balancing is a method in which it is assumed that the imbalance of a rotating body lies approximately in the plane containing its center of mass; the body is then balanced by allowing it to oscillate within a gravitational field. 5.1.2 Single-sided (static) equilibrium condition is adopted: a) When the maximum operating speed n
For ventilators, reference can be made to “JB/T 9101-2014 Balancing of Ventilator Rotors”; similar standards apply for others.
Even if there are no favorable conditions, we must create them in order to do it. We must do it..............
ISO 1940 specifies 11 grades for dynamic balancing, with each grade defining a certain range of equipment types. Each grade has a precision requirement for dynamic balancing. Feel free to check it out.