E5019NR Nachi Sheave Bearing Double Row Full Complement Cylindrical Roller Bearing Made in Japan E5019NR Nachi Sheave Bearing, E5019NR Nachi is a double row full Complement cylindrical roller bearing, E5019NR Nachi has hightest dynamic and static load ratings, bearing has Superior sealing capability and it has unique design rubber contact seal prevents dust & water invasion, E5019NR Nachi lubricates with a lithium soap-based grease containing an EP additive, E5019NR Nachi lubricates through lubrication hole & grooves only in inner ring.