S&F Siebmaschinen und Fördertechnik GmbH

S&F GmbH Siebmaschinen und Fördertechnik, headquartered in Grünkraut-Gullen near Ravensburg, Germany, has designed and manufactured screening, dosing, and conveying systems for bulk material and piece goods handling since its founding in June 1990. Originally established as Franz Amann Siebmaschinen & Fördertechnik, the company was reorganized as S&F GmbH in January 1997 under managing director Dipl.-Ing. Robert Amann. The company's screening machine portfolio centers on the ASM series of oscillating screens — including the ASM-1000 for woodchip and waste wood screening, ASM-800 for crushed waste wood and recycling materials, ASM-600 for woodchip processing, ASM-400 for crushed waste wood on hooked frames, ASM-300-D for pellet loading and dedusting at approximately 60 t/h, and ASM-200 for pellet screening — complemented by vibrating screens for economical protective screening with granular raw materials and star/disc screens for high-throughput preliminary sizing of oversized chipped waste wood. S&F's dosing systems ensure consistent material feed to downstream processing equipment, available as AVB series vibrating hoppers (0.5-10 m³ volume for lightweight bulk solids) and ABB series rubber belt box feeders (belt widths up to 2,000 mm, centre distances up to 12 m, feed box volumes up to 20 m³). The conveying range includes MFB series troughed belt conveyors such as the MFB-2000 (2,000 mm wide) and MFB-500 variants, plus oscillating and vibrating conveyors. S&F also offers complete separating and screening plant installations, project planning, assembly, and spare parts service, with applications spanning wood preparation, pellet production, refuse-derived fuel processing, and the chemical and pharmaceutical industries.