Air Circulation Chamber Furnaces < 675 Liters Electrically Heated
NA120/45 NA 250/45  

N 15/65HA as table-top model


N 250/65HA with quenching bath


N 250/65HA with gas supply system


Air circulation furnace NA 500/S with four compartments, each with roller conveyor and individual door

The very good temperature uniformity of these chamber furnaces with air circulation provides for ideal process conditiones for annealing, curing, solution annealing, artificial ageing, preheating, or soft annealing and brazing. The furnaces are equipped with a suitable annealing box for soft annealing of copper or tempering of titanium, and also for annealing of steel under non-flammable protective or reaction gases. The modular furnace design allows for adaptation to specific process requirements with appropriate accessories.

  • Tmax 450  °C, 650  °C, or 850  °C
  • Stainless steel air-baffles in the furnace for optimum air circulation
  • Swing door hinged on the right side
  • Base frame included in the delivery, N 15/65 HA designed as table-top model
  • Horizontal air circulation
  • Temperature uniformity up to +/- 5 °C according to DIN 17052-1 (model N 15/65 HA up to +/- 7 °C
  • Optimum air distribution enabled by high flow speeds
  • One removable tray and rails for two additional trays included in the scope of delivery (N 15/65 HA without removable tray)
  • Defined application within the constraints of the operating instructions

Additional equipment (not for model N 15/65HA)

  • Optimization of the temperature uniformity up to +/- 3 °C according to DIN 17052-1
  • Fan cooling to accelerate the cooling process
  • Motor driven exhaust air flaps
  • Manual lift door (up to model N(A) 250/.. (HA))
  • Pneumatic lift door
  • Adjustable air circulation for sensitive components
  • Additional removable trays
  • Roller conveyor in furnace chamber for heavy charges
  • Annealing boxes
  • Feed and charging aids
  • Designed for Tmax 950  °C
  • Process control and documentation with Controltherm MV software package
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmHeatingElectricalWeight
 °Cwdhin lWDHpower in kW3connection*in kg
NA 30/45450290420260301040129013853.01-phase195
NA 60/45450350500350601100137014756.03-phase240
NA 120/454504506004501201200147015759.03-phase310
NA 250/4545060075060025013501650172512.03-phase610
NA 500/45450750100075050015001850180018.03-phase1030
NA 675/45450750120075067515002050180024.03-phase1350
N 15/65 HA1650295340170154708454602.41-phase55
N 30/65 HA65029042026030607 + 255117513155.53-phase2195
N 60/65 HA65035050035060667 + 255125014009.03-phase240
N 120/65 HA650450600450120767 + 2551350150013.03-phase310
N 250/65 HA6506007506002501002 + 2551636186020.03-phase610
N 500/65 HA65075010007505001152 + 2551886201030.03-phase1030
N 675/65 HA65075012007506751152 + 2552100201030.03-phase1350
N 30/85 HA85029042026030607 + 255117513155.53-phase2195
N 60/85 HA85035050035060667 + 255125014009.03-phase240
N 120/85 HA850450600450120767 + 2551350150013.03-phase310
N 250/85 HA8506007506002501002 + 2551636186020.03-phase610
N 500/85 HA85075010007505001152 + 2551886201030.03-phase1030
N 675/85 HA85075012007506751152 + 2552100201030.03-phase1350
1Table-top model see page 22*Please see page 76 for more information about supply voltage
2Heating only beetween two phases 3Depending on furnace design connected load might be higher