Thermal Process Technology /
Chamber Furnaces with Drawer Bottom or as a Bogie

Chamber Furnaces with Drawer Bottom or as a Bogie

Chamber furnace NW 440 with free traversing bogie Chamber furnace NW 300 with pulled-out furnace table

The NW chamber furnaces enable simple charging for cold-cold processes. The heat treatment can take place under air or under non-flammable protective gases with a protective gas box or protective gas hood. With a drawer mechanism (NW 150 - NW 300/H) the furnace table can be easily pulled out of the chamber furnace. The larger models NW 440 - NW 1000/H are designed as shuttle furnace with completely free traversing bogie. Free access in front of the furnace allows for a simplified and clear charging.

  • Tmax 1300 °C, 1100 °C with protective gas box (additional equipment)
  • Dual shell housing, galvanized steel sheets
  • Double-walled door with front made of textured stainless steel
  • Controller mounted on furnace door and removable for comfortable operation (up to model NW 440)
  • Heating from five sides with special arrangement of heating elements for optimum temperature uniformity
  • Heating elements of support tubes provide for free radiation of the heat
  • Multi-layer insulation with light-weight refractory bricks and high-quality, energy-saving backing insulation
  • Vaulted ceiling
  • Furnace table can be pulled-out as drawer (NW 150 - NW 300)
  • From chamber furnace NW 440 bogie on four castors (two with brakes) which can be pulled out completely. Accession assistance and removable drawbar for bogie
  • SiC-floor plate protects floor elements and provides a level setting surface
  • Door sealing grinded by hand (brick on brick); NW 150 - NW 300
  • Semi-automatic air inlet flap closes the air inlet at a temperature which can be set in the controller for NW 150 - NW 300
  • Exhaust air outlet in the ceiling, motor driven exhaust air flap for chamber furnaces NW 440 - NW 1000
  • Comfortable charging height with base of 800 mm (chamber furnaces NW 440 - NW 1000 = 500 mm)
  • Defined application within the constraints of the operating instructions
  • NTLog for Nabertherm controller: recording of process data with USB-flash drive

Additional equipment

  • Protective gas boxes and hoods
  • Manual or automatic gas supply system
  • Process control and documentation via VCD software package or Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin lWDHload kWconnection*in kg
NW 15013004305306201507901150160011.03-phase400
NW 20013005005307202008601150170015.03-phase460
NW 30013005507007803009101320176020.03-phase560
NW 4401300600750100045010001400183030.03-phase970
NW 66013006001100100066010001750183040.03-phase1180
NW 1000130080010001250100013901760200057.03-phase1800
*Please see page 89 for more information about supply voltage

Protective Gas Boxes and Protective Gas Hoods for Chamber Furnaces NW 150 - NW 1000

Chamber furnace NW 200 with protective gas box
Protective Gas Boxes

These protective gas boxes have a cover with a sealing profile as well as a protective gas inlet and outlet. They are pulled out of the furnace in cold condition and charged from above.

  • Tmax 1100 °C
  • For non-combustible protective and reactive gases argon, nitrogen and forming gas (observe national regulations)
  • Protective gas box with fiber seal and cover with locks, inert gas introduction via a pipe into the bottom of the box
  • Protective gas connection via quick coupling with hose connector (inner diameter 9 mm)
  • Piping for gas inlet and outlet through the furnace collar
  • Forklift receptive
  • Heat-resistant alloy 314 (AISI)/(DIN material no. 1.4841)
  • Charge thermocouple type K for temperature display or charge control

Protective gas box for similar furnace Two automatic gas sypply systems, connected with each other
Protective Gas Hoods

Protective gas hoods consist of a and a bottom with a sealing profile as well as protective gas inlet and outlet. After charging the bottom in front of the oven in cold condition, the hood is put on and the drawer or the car is pushed back into the oven.

Design as protective gas boxes, but

  • Gassing hood with eye for raising the hood by crane
  • Hood bottom with sealing
  • Piping for gas inlet and outlet at the hood through the furnace collar

Additional equipment for protective gas boxes and hoods

  • Digital temperature display
  • Gas supply systems
FurnaceArticle no.Inner dimensions in mm Article no.Inner dimensions in mmCharging
 Protective gas boxwdh Protective gas hoodwdhthe furnace
NW 150631001329330420400 631001334300360400Drawer
NW 200631001330400420500 631001335370360450Drawer
NW 300631001331450550550 631001336420530500Drawer
NW 440631001332500600750 631001337470580550On a bogie
NW 660631001333500750750 631001338470750550On a bogie
NW 1000on request on requestOn a bogie
Article no. 601655055, 1 set of fiber insulation cord, 5 strips of 610 mm each
Work space = box inner dimensions: - 30 mm to all sides
Larger boxes and custom dimensions available upon request