1. Product Overview NART5 is standard IKO type non-separable yoke needle roller track roller (roller follower). It adopts integrated thickened outer ring and built-in needle roller assembly, designed for inner ring fixed, outer ring rotating operation, rolling directly along guide rails or cam surfaces. Common variants: NART5:Open type, no seals NART5UU:Double-sided rubber contact seals NART5R:R500 crowned outer running surface NART5X:Flat cylindrical outer surface Mainly