Siemens SINAMICS G115D

5. Replace the nut ③ and the threaded spindle ④ with a screw ⑨. Tighten the bolts ⑨ to the
speci󹪝ed torque.
6. Close the open hollow shaft end using a sealing cap⑩.
You have now mounted the hollow shaft with parallel key.
Table 12-34 Tightening torque for the screw
Thread size M5 M6 M8 M10 M12 M16 M20 M24 M30
Tightening torque in Nm 5 8 8 14 24 60 120 200 400
12.3.14.2 Removing the hollow shaft with parallel key
WARNING
Inadequately fastened gearboxes or geared motors can break loose
Before driving out the machine shaft, fasten a suitably dimensioned means of absorbing load
to the gearbox.
Slightly pretension the pulling equipment so that the gearbox does not drop onto it when the
plug-in shaft is released.
NOTICE
Subjecting stress to the hollow shaft causes bearing failure
Avoid misalignment when removing the unit.
NOTICE
Excessive forces during removal
Excessive forces can occur during removal of the hollow shaft via the housing.
Stresses in the hollow shaft can lead to bearing failure and damage to the gearbox housing.
Note
If frictional corrosion has occurred on the seat surfaces, use rust solvent to facilitate the removal
of the gearbox. Allow an adequately long time for the rust solvent to take e󹪜ect.
Additional information on the SIMOGEAR geared motor
12.3Speci󹪝c data gearbox
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA 493