The NUKR consist of a stud, of an outer ring with edges guided
by rollers, and of a full complement of needle rollers: the
combination of these elements creates a sole group ready to be
Thanks to their properties, NUKR / PWKR are able to stand very
heavy loads; these are axially guided to stand heavy lateral efforts.
All NUKR have a further lubrication hole on their shaft: if this isn’t
exploited, we recommend to close it with an appropriate cap.
Lubrication has to be frequently repeated.