Difference between static and dynamic balancing

Balancing of forces is most important in any machinery industries. Unbalance of forces is produced by the inertia forces connected with the moving mass in rotary or reciprocating machinery.

Balancing of a rotating body is done to counter the extra forces in the direction other than the rotation axis helps in avoiding the vibrations in a body.

There are two types of balancing static and dynamic balancing and also have some difference between both types of balancing. Let us have deep insight into the difference between static balancing and dynamic balancing.

Main difference :  

Only forces are balanced in static balancing whereas, in dynamic balancing, both the forces and the couples are balanced.

Difference :

  • Static balancing is performed with the object which is balanced at rest and dynamic balancing is performed with the object being balanced in motion.
  • The static balance will be produced if the sum of weights about the axis of rotation is zero and dynamic balance will be produced there doesn't exist any resultant centrifugal force as well as a resultant couple.
  • Static balancing is done where the centre of gravity is on the axis of rotation of the body while dynamic balancing is done where the body is either rotating about the axis due to an external force or by the change in the centre of gravity of the body.
If we consider balancing whether it is static or dynamic but balancing can help to extend the service life, quality and accuracy of your machine while unbalanced parts can lead to breaking down to your machine.