Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
PC Vibration Measurement System VibroMetra

Shifting fixed masses concentrically

This method adds mass to the opposite of the unbalance. Two identical mass pieces are used which can be slid concentrically around the rotation axis. In practice these can be sliding blocks or adjusting rings.
At the time of vibration measurement these masses are either removed or in neutral position (exactly opposite each other) .
VM-BAL calculates the angles to be adjusted for both masses.
Shifting fixed masses concentrically

Fixed mass

1. Fixed mass
Enter the value of the fixed mass.