This Double-Class Vacuum Extruding Machine / Block Machine produces all kinds of hollow brick with coal gangue, shale, fly ash, clay, etc. The material of auger is a wear, resistance material and has been handled by metal spay technology. The front stir axle, the big axle and the upper and the down bodies all have been handled by quench. The surface of the gears are made hard. The clutch uses spiral pressure plate patent technology to prolong the service life. More over, the reasonable design and compact structure reduce the energy wasted by the shaking during working.