Siemens SIMOTICS T-1FW3, Configuration Manual

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Configuration
5.4 Mounting
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
115
5.4.3.1 Siemens torque arm
Option T32
In Chapter "Overview of the mounting options (Page 110)", it explains that it is not
permissible that the customer's machine bearings overdetermine the bearing of a shaft.
One possible solution is the Siemens torque arm.
Advantage: Torque arms ensure a torsionally-rigid motor connection in a radial direction and
balance axial tolerances and misalignments. This reduces the bearing load. A bearing
service life of up to 60,000 h (with the exclusion of 1FW328) can be achieved for motors with
regreasing irrespective of the radial force diagram.
Figure 5-13 Schematic representation of the Siemens torque arm
● When designing the mounting assembly you must ensure that a possible (thermal)
expansion of the shaft extension remains in a range less than 0.1 mm.
● Before mounting, the motor must only be stored prisms. This rules out that the mounting
flange of the Siemens torque arm is subject to inadmissibly high cantilever forces.
● The motor can be vertically mounted when using Siemens torque arms. When attaching
the torque arms it must be ensured that there is no axial deformation or distortion.
Regarding this, refer to Chapter "Bearing change intervals (Page 69)".