Abrasive belt grinder for flat processing at 1 speed equipped with a thick and removable work surface fixed on 4 springs to allow expansion, avoiding deformation resulting from thermal excursion. The machine was created for vertical belt processing with horizontal sliding, it allows simple processing on parts to be flattened and squared with precision. Equipped with a large work surface, adjustable in height and adjustable up to 45 °, it allows you to work bulky parts safely and easily, without having to take uncomfortable positions. The height of the surface can be adjusted using a practical handwheel to ensure the best use of the abrasive belt. The belt tensioning system, equipped with a practical handwheel, acts directly on the motor support plate, the belt sliding roller is supported on both sides, this makes the belt centering stable in any working condition and its replacement quick and safe