ROLL AND BEARING STRUCTURE OF ROTATING SHAFT

PROBLEM TO BE SOLVED: To provide a bearing structure of a roller which easily discharge invading foreign matters outward in axial direction while preventing the foreign matters from invading inside from an end of the roller outer tube. SOLUTION: The bearing structure of roll is equipped with: an outer tube 11; a fixing shaft 12 penetrating the outer tube 11; a bearing 22 which is arranged between the inner circumferential surface 13 of the outer tube 11 and peripheral surface 21 of the fixing shaft 12 and rotatably supports the outer tube 11; and an annular member 26 which is located at outer tube end more outward in the axial direction than the bearing 22, attached in the inner circumferential surface 13 of the outer tube 11, and projected inward in the axial direction than the inner circumferential surface 13. The annular member 26 has notches 39-40 penetrated from axial O direction inner side surface to outer side surface, and a fin 30 which is adjacent to the notches 39-40 and formed in fold outward in the axial O direction. The notches 39-40 and fin 30 are arranged circumferentially in a plurality along the annular member 26, and the fin 30 pushes out air and moisture near the fin outward in the axial O direction in connection with normal rotating direction of the outer tube 11. COPYRIGHT: (C)2010,JPO&INPIT