Novel heavy bearing roller

The utility model discloses a novel heavy bearing roller includes back shaft and barrel, and the barrel passes through the bearing at both ends and installs on the back shaft with the bearing frame that the bearing is formed a complete set, and the bearing outside is equipped with sealing device, and sealing device follows the bearing and outwards includes labyrinth seal circle, sealed lid, rubber seal in proper order, is equipped with a plurality of labyrinth groove on the contact surface of bearing frame and back shaft, is equipped with the grease in the labyrinth groove. This neotype beneficial effect is: the bearing outside is sealed adopts axial VD type rubber seal, the sealed lid of umbelliform water -proof type, labyrinth seal encloses trinity compound seal, have good dirt resistance can, at the trickle with soak and all do not take even a drop of water under the two types. The bearing frame is equipped with labyrinth groove with the back shaft contact surface, can prevent after the fat liquoring in th