Hello Silber,
concerning the SKF 6204 2RSLTN9 hybrid bearing. Please read the recommendations from SKF for that bearing.
Sorry i coudn''t find an english version of that product catalogue:
Medienbibliothek
Read chapter 15F Hybridlager
This bearing series is designes for electric motors. Not shure if this bearing is really recommendable for an IMSB application.
Regards, Markus