▎ 摘　　要

NOVELTY - The module has multiple gap sensors (600) equipped with a roller (100) along radial direction. A part of a magnetic core ring (200) is equipped on the roller to surround an outer periphery of a cylindrical protrusion part (110). The protrusion part of the magnetic bearing is equipped in an outer circumference of the magnetic core ring for supporting radius direction load and axial direction load of the roller. A permanent magnet unit (400) is equipped in an upper portion of the magnetic core ring and a radial magnetic bearing (300) along horizontal direction. USE - Roller module for use in an electron roll printing equipment and a roll to roll equipment for manufacturing graphene utilized as material of a transparent electrode of a display and a solar cell product. ADVANTAGE - The permanent magnet unit is equipped in an upper portion of the roller so as to minimize shaking error of the roller and support weight of the roller while supporting radial direction of the roller and axial direction load of the roller. DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a roller module. Roller (100) Cylindrical protrusion part (110) Magnetic core ring (200) Radial magnetic bearing (300) Permanent magnet unit (400) Gap sensors (600)