Siemens SIMOTICS S-1FT2 Operating Instructions Manual page 37

Synchronous motors

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Figure 3-1

The following diagrams indicate the maximum permissible radial force for the corresponding

motor shaft height. It depends on the force application point and the average speed. It is

given for a nominal bearing service life (L10h) of 25000 h.

Radial force diagram 1FT2x03

Figure 3-2

SIMOTICS S-1FT2 synchronous motors for SINAMICS S120

Operating Instructions, 07/2021, A5E50610821B AB

Point of application of the radial force at the shaft extension

Distance between where the radial force is applied and the flange in mm

Force application point at the DE (A side)

Maximum permissible radial force F

lifetime of 25000 h

3.4 Permissible radial and axial forces

at a distance x from the flange for a nominal bearing

Mounting and options

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