Run-Out Of The Coupling Halves - ABB AMG 0180 User Manual

In order to ensure a long and satisfactory lifetime of both the driving and driven
machine, the machines have to be properly aligned to each other. This means that
the radial, as well as the angular deviation between the two shafts of the machine
has to be minimized. The alignment must be performed with great caution
because alignment errors might lead to bearing and shaft damages.
To install and align the machine:
•
Mount the machine on the base frame.
•
Align the machine in axial and horizontal directions.
NOTE: Alignment must be performed with great caution. Failure to do so
•
If one bearing design is considered, align and couple the coupling discs with
the flywheel and couple the flange with the flywheel housing.
NOTE: Alignment must be performed with great caution. Failure to do so

3.2.1 Run-out of the coupling halves

The alignment procedure is started by measuring the run-out of the coupling
halves. This measurement will show any inaccuracy of the shaft and/ or coupling
halves. The run-out of the coupling half in respect to the bearing housing of the
machine is measured.
Place the gauges according to Figure 3-2. Measuring the run-out at the coupling
half. Similarly check the run-out of the coupling half of the driven machine in
respect to its bearing housing. A simple lever arm is needed to turn a rotor of a
sleeve-bearing machine. The admissible run-out error is less than 0.02 mm
(0.8 mil).
which may occur to the machine or to surrounding equipment
subsequent to:
•
Excessive transmitted vibrations.
•
Poor design of foundations and/or structures.
•
Poor installation.
•
An alignment fault.
•
Poor storage conditions.
•
Non-respect of check instructions before start up.
•
An incorrect electrical connection.
can result in serious vibrations and damage to both generator and
prime mover.
can result in serious vibrations and damage to both generator and
prime mover.
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