1. Product Overview LES 211 2F is heavy-duty spherical outer insert bearing with fully extended double-side inner ring, symmetric double set screws and bilateral 2F composite labyrinth seals, interchangeable with YAR211-2F standard model. The two-stage 2F sealing unit consists of rotating metal anti-mud flinger and NBR rubber lip, effectively blocking farm mud, crop straw debris and coarse industrial dust. Spherical outer ring delivers ±2.5° self-aligning performance to