6.3 Mounting instructions
Description
NOTICE
Damage to shaft sealing rings caused by solvent
If shaft sealing rings come into contact with solvents when preservation coating is removed,
the shaft sealing rings can be damaged.
• Avoid contact between solvents and shaft sealing rings.
NOTICE
Damage to the motor due to radial eccentricity at the shaft extension
Radial eccentricity and axial forces at the shaft extension can damage the motor.
• Mount the motor in such as way that no radial eccentricity and axial forces at the shaft
extension occur.
• Adhere to the specications on the rating plate.
• Observe the warning and information plates on the motor.
• Check the permissible ambient conditions (e.g. temperature, installation altitude) at the
installation location.
• Thoroughly remove any anti-corrosion agents from the shaft extension. Use commercially
available solvents.
• Ensure sucient dissipation of heat losses. See Chapter "Cooling (Page46)".
• If the motor is installed vertically with the shaft extension facing up, ensure that no liquid can
enter the upper bearing.
• Ensure that the ange is in even contact with the mounting surface.
• Use hexagon socket-head screws with a property class of at least 8.8.
• When tightening the fastening bolts avoid any uneven stressing.
• Observe the tightening torques for the xing screws (see table below).
Tightening torques for fastening bolts
The general tolerance for the tightening torque is 10%. The tightening torque is based on a
friction coecient of μ=0.14.
Motor Bolt DIN 7984 Washer ISO7092
in mm
Tightening torque for bolts (not for elec‐
trical connections)
1F☐2☐03 M5 5 (d2 = 9) 4Nm
1F☐2☐04 M6 6 (d2 = 11) 8Nm
1F☐2☐05 M8 8 (d2 = 15) 20 Nm
Mounting
6.3Mounting instructions
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
70 Operating Instructions, 12/2023, A5E50610821B AF