Siemens SIMOTICS S-1FT7 - Option K20 - Reinforced Bearing

Motor components and options
4.2 Options
S-1FT7 synchronous motors
Configuration Manual, 09/2018, A5E45099423B AA
83
4.2.4.3
Option K20 - Reinforced bearing
The 1FT7 motors are available with reinforced bearings by selecting option K20.
You will find the 1FT7 motors that are available with option K20 in Section "Limited validity."
The following diagrams show the maximum permissible radial forces of the corresponding
motor sizes for option K20. It depends on the points of application of the force, and the
average speed for the nominal bearing lifetime of 25000 hours.
F
R
Point of application of the radial force
x
Distance between where the radial force is applied and the shaft shoulder in mm
Figure 4-6 Force application point at DE
Motor 1FT7062
Figure 4-7 Radial force diagram 1FT7062