Siemens SIMOTICS M-1PH3 Manual page 41

For force levels going beyond the upper and lower limits, contact your local Siemens office.
NOTICE
Premature damage to bearings and shaft breakage due to strong radial forces
Bearings can be prematurely damaged and shafts may break if force transmission elements
apply too much load to the shaft end as a result of radial forces.
• When using mechanical transmission elements, make sure that the maximum limit
NOTICE
Destruction of bearing seats
The motor bearings are designed for operation with radial forces. Rotating forces from the
process or imbalance > Q 2.5 can destroy the bearing seats. The rotating forces and
imbalance can also occur on coupling drives.
• Avoid rotating forces and imbalance.
NOTICE
Mechanical destruction of the motor
If the motor supports higher forces when force/torque boosting elements are used, the
flange or feet of the motor can be torn off.
• Make sure that the force/torque boosting elements, for example, gearboxes or brakes,
Note
Complying with the belt manufacturer's guidelines
• When dimensioning the radial forces at the shaft extension, make sure that you comply
with the regulations of the belt manufacturers.
• Set the belt tension by means of appropriate measuring instruments.
1PH3 main motors
Equipment Manual, 01/2021, A5E43087278-004
values specified in the radial force diagrams are not exceeded.
absorb the higher forces. The remedy examples are as follows:
– Choose the correct type of construction.
– Mechanically mount the force/torque boosting elements properly.
Mechanical properties
3.8 Radial and axial forces
39