stainless steel silver series, light duty
SU000: Inserts with 420 stainless steel and eccentric locking collar.
SK000: Inserts with 420 stainless steel and setscrew locking.
Pre-lubricated by factory, no grease groove or grease holes for re-lubrication
With wider inner ring
Usually used with stainless bearing housing SP00 series and SFL00 series