Air Circulation Pit-Type Furnaces Electrically Heated
SAL 250/65 SAL 120/65 with protective gas retort box and cooling station next to the furnace

Basket system for charging in different layers


SAL 30/65 with exchangeable retort and two retort air cooling devices

SAL 30/45 - SAL 500/85

Pit-type furnaces with air circulation offer the advantage of easy charging, for heat treatment of heavy parts or loads in charge baskets. With maximum application temperatures available from 450 °C to 850 °C, these compact furnaces are particularly useful for processes such as tempering, solution annealing, artificial ageing, and soft annealing.

  • Tmax 450  °C, 650  °C, 850  °C
  • Air circulation fans in the furnace bottom, high circulation rate
  • Vertical air circulation with square air heating chamber
  • Temperature uniformity up to +/- 4 °C according to DIN 17052-1
  • Interior walls from stainless steel
  • Switchgear with solid-state relays
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Charging hoist with swivel arm and charge basket
  • Optimization of the temperature uniformity up to +/- 2 °C according to DIN 17052-1
  • Integrated fan for rapid cool down or separate cooling station for annealing box cooling outside of the furnace
  • Annealing box with protective gas inlet and outlet for production in a defined atmosphere
  • Manual or automatic gas supply systems for non-flammable protective or reaction gases
ModelTmaxInner dimensions in mmVolumeMax. charging weightOuter dimensions in mmHeatingElectricalWeight
 °Cwdhin lin kgWDHpower in kW2connection*in kg
SAL 30/454503002504003012075085012503.01-phase130
SAL 60/454503503505006012080095013506.03-phase225
SAL 120/45450450450600120120900105014509.03-phase280
SAL 250/4545060060075025040010501200160018.03-phase750
SAL 500/4545075075090050040012001350175027.03-phase980
SAL 30/656503002504003012075085012505.53-phase1130
SAL 60/656503503505006012080095013509.03-phase225
SAL 120/656504504506001201209001050145013.03-phase280
SAL 250/6565060060075025040010501200160020.03-phase750
SAL 500/6565075075090050040012001350175030.03-phase980
SAL 30/85850300250400308060074010005.53-phase1130
SAL 60/85850350350500608080095013509.03-phase225
SAL 120/85850450450600120809001050145013.03-phase280
SAL 250/8585060060075025025010501200160020.03-phase750
SAL 500/8585075075090050025012001350175030.03-phase980
1Heating only beetween two phases *Please see page 76 for more information about supply voltage
2Depending on furnace design connected load might be higher