Motor Description
1.9 Vibration severity limit values
1PH7/1-31
Siemens AG, 2004. All rights reserved
Induction Motors, 1PH7 (APH7S) – 05.04 Edition
1.9 Vibration severity limit values
The vibration severity limit values are identical within the 1PH series!
The diagrams are included in the Planning Guide, “General Part for Induction
Motors”.
Note
A foot support is required for the following motors in order to maintain the vibration
severity limit values:
SH 160 to SH 225 for type of construction IM B35
Permissible induced vibrations
In order to ensure perfect functioning and a long lifetime, the vibration values,
specified in the following table should not be exceeded at the motor.
Table 1-15 Vibration values
Vibration
frequency
Vibration values for shaft height
SH 100 to 160 SH 180 and 225
< 6.3 Hz Vibration travel s [mm]
0.16 0.25
6.3...63 Hz Vibration velocity v
aM
[mm/s]
4.5 7.1
> 63 Hz Vibration acceleration a [m/s
2
]
2.55 4.0
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