1.Product Overview LES 207 2F is a medium-large metric insert ball bearing equipped with spherical outer ring and bilateral 2F composite labyrinth sealing unit. Two symmetric M6 set screws are mounted on extended double-side inner ring to lock 35mm shafts firmly during frequent forward and reverse rotation. Its exclusive 2F seal structure consists of outer metal dust flinger and inner NBR rubber lip, which effectively blocks heavy mud, crop debris and industrial abrasive dust