3.2 Degree of protection
1FK2 motors can be designed with degree of protection IP64 or IP65.
The degree of protection if stated on the rating plate.
The motors with IP65 degree of protection have a radial shaft seal ring.
1FK2☐03 ... 1FK2☐04 1FK2☐05 ... 1FK2☐10
① Radial shaft seal ring
The radial shaft seal ring shortens the useful shaft extension on the 1FK2☐03 and 1FK2☐04.
Note
It is permissible that the radial shaft seal ring runs dry.
With degree of protection IP65, it is not permissible for liquid to collect in the ange.
The service life of the radial shaft seal ring is approximately 25000 operating hours.
Mechanical properties
3.2 Degree of protection
1FK2 Synchronous Motors for SINAMICS S120
Conguration Manual, 02/2022, A5E46927724B AD 37
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