| 摘要 |
In a guide roller for web material with two outer tube sections (2, 2a) and optionally with at least one tube section 1 that is arranged between these, the tube sections (1; 2; 2a) are supported through ball bearings (5; 7) on a central shaft 3. The outer tube sections (2; 2a) are radially adjustable relative to the shaft 3 at their outer ends. The ball bearings (7) that support the outer tube sections (2; 2a) are arranged on a sleeve (20) that surrounds the shaft (3) and is spaced apart therefrom, this being supported on the shaft (3) at its end that faces the centre of the guide roller, and is radially adjustable by a threaded spindle (4, 4') that fits in an outer threaded area (13a; 13a') that faces radially towards the middle of the shaft. At the front end, the threaded spindle (4; 4') rests on a peripheral surface of the shaft (3) or sleeve (20) or on a supporting surface (11) that is arranged concentrically to this. The outer threaded area (13a) is arranged within a carrier (13) that is supported on the sleeve (20) or on the shaft (3). The carrier (13) is twistable about the shaft (3) and can be locked in different twisted positions.
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