1. Product Overview LSS 210 2F is large spherical outer insert bearing equipped with bilateral 2F composite labyrinth seals and symmetric double set screws. The two-stage 2F seal combines rotating metal flinger and NBR rubber lip to isolate farm mud, straw waste and workshop dust. Spherical outer ring realizes ±2.5° self-alignment to offset slight shaft installation deflection. Pre-filled with high-temperature heavy-duty grease and fitted with relubrication nipple, it matches