MM-13- rev 01-EN
17
:
X
a
b
C
a = X/2
5
b = ± 0.05
c = ± 0.05
Whenever the alignment errors exceed the tolerated values, the appropriate corrections must be
performed by means of shims inserted under the machine flange and, if necessary, with small lateral
movements.
After having fully tightened the bolts, the measurement must be repeated and, if alignment is precise,
the reference pins can be applied between the machine and the rest surface.
Further refinement of alignment can be obtained using two comparators, each joined to a coupling
half, which measure axial and radial oscillations in the different positions.
If the coupled machine works at temperatures higher than those of the generator, in the alignment
phase, it is necessary to compensate the differences that can be determined by the different
expansions.
The suppliers of the coupled machines must supply the values of the vertical, lateral and axial
deviations to normal operation temperatures.
