Mechanical properties
3.9 Balancing
S-1FT7 synchronous motors
62 Configuration Manual, 09/2018, A5E45099423B AA
Checking the concentricity
Checking the axial eccentricity
Figure 3-14 Checking the concentricity and axial eccentricity
The motors are balanced according to DIN ISO 8821.
Motors with featherkey in the shaft are half-key balanced.
A mass equalization for the protruding half key must be taken into account for the output
elements.
Vibration response
Vibration severity grade
Motors with a keyway are balanced with a half feather key by the manufacturer. The
vibration response of the system at the location of use is influenced by output elements,
mounting conditions, alignment, installation, and external vibrations. As a result, the vibration
values of the motor may change.
The motors conform to vibration severity grade A according to EN 60034-14 (IEC 60034-14).
The values indicated refer only to the motor. These values may increase on the motor due to
the overall vibration characteristics of the complete drive installation.
The vibration severity grade is maintained up to the rated speed (n
N
).
Standard: Vibration severity grade A
Option: Vibration severity grade R (compliance with vibration severity grades A and R up to
n
N
)
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