Parallel, Angular And Axial Alignment - ABB AMA Series Manual

Manual for Induction Motors and Generators

3.6.5.3 Parallel, angular and axial alignment

32 - Installation and Alignment
Figure 3-7 Measuring the run-out at the coupling half
After the machine has been roughly positioned, as described in Chapter 3.6.2 Rough levelling
and Chapter 3.6.3 Rough adjustment, the final alignment can start. This step must be performed
with great caution. Failure to do so can result in serious vibrations and damage to both driving
and driven machine.
The alignment is done in accordance with the recommendations given by the coupling
manufacturer. Parallel, angular and axial alignment of the machine is required. Some standard
publications give recommendations for coupling alignment, e.g. BS 3170:1972 "Flexible
couplings for power transmission".
In accordance with common practice, parallel and angular misalignment should not exceed
0.05-0.10 mm and axial misalignment should not exceed 0.10 mm, see Figure 3-8 Definition of
misalignment The corresponding run-out is 0.10-0.20 mm for parallel and angular
misalignment.
3BFP 000 050 R0101 REV E