Measurement Computing eZ-Balance rev.9.0 - Manual (Page 33)

eZ-Balance 939093 Balance Toolkit 4-1
Balance Toolkit 4
Trial Weight …… 4-1
Split Weights …… 4-2
Resolving Weights …… 4-3
Chord-Angle-
Arc …… 4-3
Runout Compensation …… 4-4
Unbalance Tolerance …… 4-5
Stock Weights …… 4-6
Drill Bit Weights …… 4-7
Arc Weight …… 4-8
The Balance Toolkit provides the means to quickly make a variety of useful balance calculations. To open
the toolkit window, select “Balance Toolkit” from the main screen’s Window pull-down menu or press the
< Balance Toolkit > button. It is the first button in the Window panel.
There are 9 tabs in the Balance Toolkit window (see following figure). Each tab accesses a specific
balance calculation. Clicking on an inactive tab brings it to the foreground.
Two panels and a button reside to the left of the tabs. The upper panel is for identifying engineering units
as English or Metric. The second panel is for selecting the type of material, e.g., steel, aluminum, etc. The
button executes the calculation, instantly solving for an unknown variable, or, in some
instances, generates a message [likely due to an invalid data entry].
Trial Weight
Trial Weight Tab
The Trial Weight tab is used to calculate the weight needed to generate a force equal to 10% of the rotor
weight. The Trial Weight can be calculated by entering the rotor radius, rotor weight, speed in RPM; and
then clicking the button.
You can also use this tab to calculate Centrifugal Force by entering the radius, rotor speed, the trial weight;
and then clicking the button.
If the rotor is near resonance, a force equal to 10% of the rotor will have too large of an
effect. If there is past sensitivity data available, it should be used.