Siemens 1LA8 - Table 5-2 Permissible Deviations for Aligning the Machine with Flexible Coupling; Figure 5-3 Schematic Diagram: Aligning the Machine to the Driven Machine

4. When positioning the machine, ensure that a uniform axial gap (y→0) is maintained around
the coupling.
5. Fix the machine to the foundation. The choice of fixing elements depends on the foundation
and is the plant operator's responsibility.
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① Plates placed under the motor for alignment
② Laser alignment
Figure 5-3 Schematic diagram: Aligning the machine to the driven machine
Table 5-2 Permissible deviations for aligning the machine with flexible coupling
Max. speed n
max
Max. parallel offset x Max. angular offset y
n
max
≤ 1500 rpm x
max
= 0.08 mm y
max
= 0.08 mm / 100 mm ∅ D
1500 rpm < n
max
≤ 3600 rpm x
max
= 0.05 mm y
max
= 0.05 mm / 100 mm ∅ D
Note
Machine expansion
When performing alignment, make allowance for the thermal expansion of the machine due
to rising temperature.
Assembly
5.3 Installing the machine
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 08/2017 63