FIELD: monodispersive powder of rubber or rubber pieces production. SUBSTANCE: worm shaft 3 has several zones a, b and c, each of which has transportation site р6, grinding site 7 and unloading site 8. Each of zones a, b, c has loading funnel 9, unloading hole, cooling joint ( 11, 12, 13 correspondingly) with means to move ground rubber from unloading hole of previous zone to loading hole of next zone along run of production process. Sites of transportation and grinding of each zone have two groups of transporting and grinding bridges 18, 19. Unloading sites are made flat. Means to transport ground rubber are made in the form of screw-type conveyers. Cooling joints are provided with opposite directed means of air cooling. Unloading holes are located on lower side of body 2 of worm shaft 3 along run of production process and are separated from each other by shutters 17. Each cooling site is provided with means for screening and/or classifying of ground rubber and for removal it from fractions production process. EFFECT: apparatus is used in monodispersive powder of rubber or rubber pieces production. 6 cl, 2 dwg
