| 摘要 |
<p>The present invention relates to a contact-exposing-type screw conveying apparatus using a radial bearing. The screw-conveying apparatus using a bearing comprises: a screw shaft; a nut coupled to the screw shaft via a screw, wherein said nut comprises a plurality of rod-shaped bearing holders, each of which has a rod shape extending in the direction of the screw shaft, and which are spaced apart from each other in a circumferential direction along the outer surface of the screw shaft; a plurality of radial bearings arranged in the lower portion of each of the rod-shaped bearing holders along a helical path formed in accordance with the pitches of male screws of the screw shaft; and spacers for fixing both ends of each of the rod-shaped bearing holders, such that each of the rod-shaped bearing holders can maintain a predetermined distance from the center of the screw shaft and maintain a predetermined distance from each other in the circumferential direction of the screw shaft.</p> |
