1. Product Overview LSU 207 2F integrated vertical V-shaped grey cast iron bearing unit, matched with YAR207-2F double set screw insert bearing with extended inner ring. Bilateral 2F composite seal adopts centrifugal metal flinger plus NBR rubber lip two-stage labyrinth barrier structure. Two symmetric M7 set screws lock inner ring evenly to support stable bidirectional forward & reverse rotation. Spherical outer ring provides ±2.5° self-alignment to compensate shaft assembly