Fafnir FLCT flange cartridges are rugged, versatile power transmission units designed to provide sturdy shaft support in minimum space at minimum cost. The housing is a space-saving, two-bolt unit which mounts flush against the frame. Bolt hole spacing and size is the same as Fafnir's popular light-duty Pressed-Steel Flangette Unit. FLCT flange cartridges are equipped with the RA-RRB extended inner ring ball bearings with positive contact,land riding seals. These bearings are permanently prelubricated and positively protected against contaminants. The Fafnir invented self-locking collar completes the assembly.