| 摘要 |
The invention is a roller, particularly for belt conveyors, comprising at least two radial bearings (12) of identical rotational axis, being mountable onto an axis (10), a roller body of cylinder shape attached to an outer racer (15) of the radial bearings (12), and at least one seal element (14, 16, 20, 27) preventing contamination of an inner space of the roller, wherein the roller body comprises a cylindrical roller mantle (25) made of plastic and a tube element (22) supporting the roller mantle (25) from inside. The tube element (22) is arranged along the rotational axis of the roller body, stiffening the roller body, and extending over the radial bearings (12) in both directions. Furthermore, the invention is an apparatus for manufacturing said roller, the apparatus comprises a press unit comprising a press element movable by means of a press apparatus and suitable for pressing a tube element having larger outer diameter than the inner diameter of the roller mantle into a roller mantle. (Fig. 1) |
