1. Product Overview LES 218 2F heavy spherical outer insert bearing features fully extended bilateral inner ring, symmetric double set screws and bilateral 2F composite labyrinth seals, interchangeable with YAR218-2F standard model. Two-stage 2F seal with rotating metal anti-mud flinger and NBR rubber lip blocks farm mud, crop straw and coarse industrial dust. Spherical outer ring provides ±2.5° self-aligning function to offset slight shaft installation deflection. Pre-filled