1. Product Overview LES 210 2F is large spherical outer insert bearing with dual-sided 2F composite labyrinth seals and symmetric double set screws. The two-stage 2F seal consists of metal flinger and rubber lip to block mud, crop straw and industrial dust. Spherical outer ring offers self-aligning performance to compensate slight shaft misalignment. Pre-filled with high temperature heavy-duty grease and equipped with relubrication nipple, widely applied on grain harvesters,