Balancing; Smooth Running, Concentricity And Axial Eccentricity - Siemens SINAMICS S120 1PM6 Configuration Manual

Mechanical properties of the motors

3.5 Balancing

3.5 Balancing
In addition to the balance quality of the motor, the vibration quality of motors with mounted
couplings is essentially determined by the balance quality of the mounted component.
If the motor and mounted component are separately balanced before they are assembled,
then the coupling must be balanced by the same method used to balance the motor.
Table 3-14
Auxiliary shaft to balance the mounted
component
Attaching the mounted component to the auxiliary
shaft for balancing
Position of the mounted component on the
auxiliary shaft for balancing
3.6

Smooth running, concentricity and axial eccentricity

The shaft and flange accuracies are checked according to DIN 42955, IEC 60072-1. Any
specifications deviating from these values are stated on the dimension drawings.
Standard: Tolerance N
Option: Tolerance R
Figure 3-9
52
Balancing of mounted components
Balancing equipment/process step
Checking the radial eccentricity
Motor with plain shaft end
Auxiliary shaft, without key;
use, if necessary, a tapered auxiliary shaft;
balancing quality of the auxiliary shaft ≤ 10% of
the required balancing quality of the mounted
component.
Attach the component with as little play as
possible, e.g. using a light press fit on the tapered
auxiliary shaft.
No special requirements
1PM6/1PM4 Hollow-Shaft Motors for Main Spindle Drives
Configuration Manual, PPMS, 04/2008, 6SN1197-0AD23-0BP0