Brunobl
Senior Heliman
Location: Pomerode, Santa Catarina - Brazil
| If you rely on a marker to touch the edge of the rotating object, you will only really see the high points (runout) and then only the grossly out of round spots at that, I believe.
Assuming a well centered round object, I don't think that an imbalance wobble will be of such magnitude that will allow you to physically mark the edges with ink. IOW, the wobble is so minute that any attempt to touch the edge with a marking device would interfere with the wobble itself and/or would not leave a visible mark.
Dynamic balancers detect amplitude and phase of vibration with respect to angle of rotation to determine the heavy spots. They don't attempt to physically touch the tested object in any way.
Also, a marking mechanism would be restricted to circular objects, while other testing methods can dynamic balance other shapes (propellers or crankshafts, for example).
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Best regards,
Bruno. |
