Two-speed centerless abrasive belt grinder for the satin finishing and polishing of round parts up to 110 mm in diameter and up to 1 m in length. For longer lengths additional workpiece support guides are available. The grinding head is equipped with a belt tensioning and centering system, and the contact wheel available in different diameters according to the need. The centerless group with grooved rubber wheel and various workpiece support accessories, has variable speed to adjust the rolling speed of the workpiece according to the diameter. Electronic regulation and in continuous progression from 15 to 75 rpm. Equipped with electrical system in watertight metal box. Available in dry or wet processing version to meet all production needs.