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BalanceMaster, Inc.
2246 Toll Gate Road
Concord, VA 24538
USA
434-993-9182 (voice)
434-993-3280 (fax)
send Email
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| The answer is in the shape of the rotating
part: |
| In this picture, both Weight A and Weight B are located in
the same plane of rotation
Centrifugal forces generated by both weights are acting in
the same plane of rotation.
Because of this, the combination of both weights acts as if it were
indeed combined to one weight.
The Result:
Static unbalance |

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| In this picture, Weight A is located at the far left. This
plane is called "Left plane of Rotation"
Weight B is located at the far right side of the drum-shaped body. This
plane is called "Right plane of rotation"
Centrifugal forces generated by both weights are acting in
different planes of rotation.
Because of this, each weight will try to pull the drum in the direction
of it's centrifugal force.
The Result:
Dynamic unbalance
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Dynamic
unbalance can only be
detected while the part is spinning:
Spin balancer |
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