| 摘要 |
<p>The roller (1) has a casing (2) comprising a supporting element (5) that exerts force on inner circumference of the casing. The supporting element is supported on a non-rotating axle (4) penetrating the casing, where main component (8) of the axle is made of cast or foamed composite material i.e. metal foam, or concrete. The axle is arranged between end pieces (13a, 13b) that are made of rigid material, where the end pieces comprise mountable pins (3a, 3b). A clamping element (14) clamps the main component of the axle between the end pieces, and is designed as a tensioning bolt (15).</p> |
