A Definition of Unbalance

None uniform mass distribution around the axis of rotation

A Rotor is unbalanced when its mass is not evenly distributed around the axis of rotation
From definition it is clear that it makes no sense to speak of unbalance without defining the axis of rotation, that is the ideal line around which the mass distribution is considered.

Every rotor can be divided into different sections (perpendicular to the axis of rotation) each one having its own unbalance.

When in rotation, a rotor experiencing unbalance will want to revolve around its mass centre axis and because this motion is restricted by bearings, the resulting centrifugal fource will cause excessive vibration.

This vibration can be catastrophic - creating unnecesary wear to bearings and more noise.

If the correct action is not taken to address unbalance, the result can be as dramatic as a total breakdown of the rotor.

Therefore, if you would like to speak to a balancing expert - get in touch with  Cemb Hofmann UK on 0161 872 3123 today.

We have extensive expertise in this field, from dynamic balancing services to machine sales and even training course - we will be delighted to talk you through the right approach to correcting whatever unbalance your machinery parts may be experiencing.

Balancing Rotors

Balancing Rotors: The Basic Principles

Balancing requirements

Unbalance control and measurement of rotating bodies is becoming more important for different reasons: 

1) Higher operating speeds (more production) 

2) Lighter construction (lower production costs) 

3) Service speeds near to critical speeds (technical or space reduction does not allow more rigid construction) 

4) Longer component life (bearings for instance) 

5) Lower maintenance costs (for repair and component exchange)  

6) Longer machine availability (fewer production stoppages)

 

It is important to point out that the measurement of unbalance is a quality control process at the end of manufacture or production line. It reveals errors on dimension tolerances, casting faults, uneven parts and is an index for the quality of the final product. 

A Definition Of Unbalance

None uniform mass distribution around the axis of rotation 

A Rotor is unbalanced when its mass is not evenly distributed around the axis of rotation

From definition it is clear that it makes no sense to speak of unbalance without defining the axis of rotation, that is the ideal line around which the mass distribution is considered.

 

Every rotor can be divided into different sections (perpendicular to the axis of rotation) each one having its own unbalance. 

I will be blogging with more information about couple, static and dynamic unbalance over the next few weeks so please feel free to ask any questions in the meantime - if you are experiencing a particular aspect of ubalance then Cemb Hofmann UK can most certainly be of service.

 

If you want to find out more about any aspect of balancing just visit our site!