The invention relates to the technical field of leather making equipment, and discloses a mechanical type dehairer used for leather. The mechanical type dehairer used for leather comprises a shell, supporting legs are fixedly arranged on the two ends of the bottom face of the shell, steady plates are fixedly arranged on the left end and the right end of an inner cavity of the shell, rolling rods are movably arranged on the inner wall of the shell, the outer portions of the rolling rods are fixedly sleeved with dehairing scraping pieces, two rolling rods are arranged, and the side faces, closeto the inner wall of the shell, of the two rolling rods are fixedly provided with adjusting casing rods located on the front faces of the dehairing scraping pieces. According to the mechanical type dehairer used for leather, an adjusting handle is moved to control the distance between the two dehairing scraping pieces, a control hand shank is used for regulating and controlling the distance between two cleaning boxes, the dehairer can be suitable for leather raw materials of various thicknesses, the problem that an existing device cannot be suitable for production of multiple leather is solved, the adaptation range of the dehairer is prolonged, and practicability of the dehairer is improved.