F
Rotor balancing
F:7
Unbalance
A rotor is unbalanced when the centre of its
mass does not co-incide with the shaft centre.
This condition can be described as the rotor
having a ‘heavy spot’ somewhere along its
circumference.
If we know the position and weight of this
heavy spot, we can reduce it by taking away
mass or, more often, put a counterweight on
the oppisite side of the rotor.
For one plane balancing, it is assumed that the
heavy spot is on the centre line of a narrow
rotor or near enough, so that it does not matter
on which side of the centre line the counter
weight is place.
Position?
Counter
weight?
Summary of Contents for leonova emerald
Page 1: ...User guide PORTABLE EFFICIENCY ...
Page 2: ......
Page 6: ...A 2 General instrument functions A ...
Page 36: ...B 2 General measurement functions B ...
Page 74: ...C 2 Measurement techniques always included B C ...
Page 88: ...D D 2 Shock pulse measurement ...
Page 122: ...D D 36 Shock pulse measurement ...
Page 124: ...E E 2 Vibration measurement ...
Page 150: ...E E 28 Vibration measurement ...
Page 152: ...F F 2 Rotor balancing ...
Page 170: ...F F 20 Rotor balancing ...