Roasters for coffee

Range "NM": Mainly for roasted coffee

nm range

TTA Series/NM: Specialised range for torrefacto coffee; robust and reliable

A specialised range of roasters for torrefacto coffee, a process where the green coffee bean is roasted with sugar, and sometimes other additives.
Coffee is roasted in a drum with swinging motion and unperforated sides to ensure effective air flow and airtightness during product processing. The roaster components and drum are manufactured from food grade stainless steel.
The torrefacto coffee cooler has a single cooling cylinder.
Roasting capacity of 180–1,700 kg coffee per hour.
TTA Series/NM roasters can operate at half or full nominal load, at the same roasting temperature and producing the same roast profile. To achieve this, the PLC allows unlimited roast profiles that are automatically adjusted so they can be replicated exactly from one cycle to the next.
Heat is mainly transmitted by convection during operating stages where no sugar is present, and by conduction when sugar is added.
TTA Series/NM equipment operates with sugar levels of up to 33% in standard configuration and 75% for special technical characteristics.

  • Capacity of 60–560 kg coffee per cycle. Single roasting drum.
  • 180–1,700 kg torrefacto coffee roasted per hour
  • Furnace with electronic progressive gas or diesel burner; low emissions
  • Cylinder cooler with chaff-removing agitator paddles
  • Chaff collector
  • PLC control panel and SIEMENS/AB colour touch screen
  • Smoke afterburner with or without catalyst

Capacidad por tostado
Tiempo por ciclo
TTA-60 / NM30-60 Kg por ciclo20 - 35 minutos
TTA-140 / NM70-140 Kg por ciclo20 - 35 minutos
TTA-240 / NM120-240 Kg por ciclo20 - 35 minutos
TTA-300 / NM150-300 Kg por ciclo20 - 35 minutos
TTA-400 / NM200-400 Kg por ciclo20 - 35 minutos
TTA-560 / NM280-560 Kg por ciclo20 - 35 minutos


La gama TTA SERIES / NM está pensada para el tueste prácticamente exclusivo de café “torrefacto”, con varios porcentajes de azúcar añadido, y la posibilidad de añadir otros aditivos.

Roast time in TTA Series/NM range roasters is 20–35 minutes. Short roast times accentuate acidity in the coffee bean, and longer roasts promote body. The level of sugar added affects roast time: higher levels of added sugar require a longer roast. All roasters in the range can operate at half or full nominal load, and the PLC adjusts times and temperatures for a consistent roast profile.

  • Homogeneous colour thanks to the method of heating the coffee bean, which is mainly convection (heat transfer from hot air) with some conduction (heat transfer from the roasting drum)
  • Carbon steel or food grade stainless steel roasting drum with a variety of mixing paddles available in customised materials. Coffee moved evenly and carefully in the roasting drum to prevent damage to the bean. The roasting drum is hemispherical, which keeps all the ingredients that make up the torrefacto coffee inside the drum. Product is transferred into the cooler by tilting the drum towards the cooler.
  • The door in the roasting drum can be opened at any stage of the roasting process to add ingredients and verify the production process.
  • Degrees of roast, from light to dark, with the same capacity per cycle.
  • Degrees of roast, from light to dark, with the same capacity per cycle
  • Practically negligible weight loss, which can be compensated by the quenching system at the end of the roasting process
  • Rapid and careful cooling to prevent damage to the coffee bean Cooler manufactured from stainless steel.
  • Roasting and cooling cycles are synchronised and occur simultaneously
  • Roasters are equipped with solid particle evacuation cyclones for the coffee cooler, hot air recirculation, electronic burners, and smoke afterburners with catalysts, for both the roaster and the cooler


The TTA SERIES/NM range is the best solution for specialised batches of torrefacto coffee. The design, development and manufacture of the TTA SERIES/NM range meet the most stringent robustness and reliability standards.
All components of the TTA SERIES/NM range are controlled by PLC, with SIEMENS or ROCKWELL HMI and local area or internet PC SCADA for remote access. Comprehensive user interface which is programmable, remotely accessible and customisable at all times
There is no limit to the number of recipes that can be stored by the control system, so the roasting process can be adapted to the various roasting profiles required by the production program
TTA SERIES/NM range software includes a product traceability system, which enables batch numbers and process quality to be managed.
Temperature curves and process parameters are visualised and stored in each roasting cycle


Los equipos garantizan el grado máximo de rendimiento y seguridad en su funcionamiento.

  • Compliance with local safety regulations related to the machinery, products and staff operating the roaster Potential to update parameters in response to new regulations in the future
  • Maintenance and repair protocol. Immediate availability of standard parts that affect machine safety. Maintenance time minimised Maintenance time minimised Downtime for maintenance: 30 minutes every 24-hour period of continuous operation.
  • Quick and easy access to clean the roaster and replace worn parts.
  • Temperature and air pressure sensors installed in roaster heat sources and air ducts, to control roaster heat balance and prevent overheating and heat venting.
  • Automated fire prevention systems, water injectors and burner operation monitoring.
  • Energy-saving devices including hot air recirculation, use of renewable energy sources, low-emission mixed electronic burners, catalysts and cleaning procedures using closed-loop water systems