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Figure5-2 A ange and B ange
5.5 Specications for integration in the machine
Fits for motors with integratedcooling
Built-in torque motor stators with integrated cooling have a centering collar at both anges. In 
the factory, the centering collars are machined with tolerance class f8 with respect to the 
nominal dimensions. The outer diameter is always slightly below the nominal dimension.
Tolerance class H8 is recommended for the centering collar on the customer side in which 
you wish to insert the stator. The centering collar diameter always has its nominal dimension 
or is slightly larger.
For motors with integrated cooling, a centering collar on the machine side as mating surface 
to the centering collar on the motor side is sucient.
You may only insert motors with integrated cooling with the mounting ange in a centering 
collar. 
It is not necessary to install the stator in a machine bore (enclosure).
However, if you do install the stator in a machine bore, then you must maintain a gap of 
at least 1.5mm around the complete circumference to allow for thermal expansion of the 
stator, and more specically:
• over the complete peripheral surface of the stator
• At the free ange
Installation
5.5Specications for integration in the machine
1FW6 built-in torque motors
74 Operating Instructions, 09/2022, A5E52220812B AA