Abstract: An expander roller includes a tubular roller sleeve 2 adjustable in its curvature that is formed of one-piece tubes made of reinforced plastic/composite material, and that is mounted on a non-rotatable central area by means of bearings 13. The central area is a deformable axis. The outer surfaces of the bearings 13 rest against the inner wall of the roller sleeve 2 or of one of the outer ring shell bushings 3 resting against its inner wall. The inner surfaces of the bearings 13 rest on the upper surface of the deformable axis 1 or of a ring shell bushing 4 firmly surrounding it.

Abstract: A guide roller for web material, in particular for paper-handling machinery, has two outer tube sections (2, 2′) and optionally at least one tube section (1) arranged between these. The tube sections (1; 2; 2′) are supported on a central shaft (3) through ball bearings (5; 6; 7), and the outer tube sections (2; 2′) are adjustable radially relative to the shaft (3) at their outer ends. The ends (1a; 2a) of the tube sections (1, 2) that are adjacent to each other fit into each other and are connected directly to each other so as to non-rotatable, the ball bearing (5) being situated beneath the area of overlap (1a, 2a) and the outer tube sections (2; 2′) being configured elastically in the longitudinal direction.