Support rollers of the NATR design incorporate cage-guided needle rollers and permit relatively high speed operation The outer ring is guided by the side washers which are pressed on to the inner ring; the washers form gap-type seals with the outer ring The outer ring is particularly thick-walled and intended for heavy loads and also shock loads Operating temperature range is -30 to +100°C Conforms to ISO 6278-1980 and ANSI/AFBMA Standard 16.1-1988 as well as ANSI/AFBMA Standard 16.1-1976