roller assembly applied to refrigerator

The present invention provides a roller assembly, the roller with a through hole formed in the center; And is a through-hole that is circumscribed head for rotation and the center of a cylindrical groove formed in the roller, the roller assembly is a magnetic body-part bolt fixed to the side to be attached spiral; A non-magnetic fixture consisting of a cylindrical body which is an interference fit in the cylindrical groove of the magnetic bolt, the head having a diameter larger than the head diameter of the magnetic bolt; And it is characterized in that comprises a washer interposed between the head and the roller of the non-magnetic fastener. Refrigerator, magnetic material, rollers, rails, bolts, driver