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GF 75  GF 600  

GF 240 

"Combing" in a GF 240

 
GF 75 - GF 1425

The furnaces in the GF75 - GF 1425 product line were conceived for professional glass artists. The heating elements, closely arranged, protected in quartz tubes, ensure a very high degree of temperature uniformity during fusing or during bending across the whole table surface. The optimized insulation, made of non-classified fibrous material in the furnace hood and robust lightweight refractory bricks in the furnace floor allow clean and safe operation. High current connection capacities assure that the furnace can be rapidly warmed up. The complete firing sequence is controlled by the intuitively operated Controller P300.

  • Tmax 950 °C
  • Heating element, protected in quartz tubes
  • High current connection capacities for short warm-up times and energy-saving way of working
  • Arranged closely beside each other on the top, heating elements ensure direct and uniform radiation of the glass
  • Level table surface with insulation made of robust lightweight refractory bricks and marked charge surface
  • Hood insulation made of non-classified ceramic fibers for rapid warming up and cooling down
  • Solid state relays provide for low-noise operation
  • Fast power switching for precise temperature uniformity
  • Type “K” (NiCr-Ni) thermocouple inside the furnace chamber for precise temperature measurement
  • Double-wall, adjustable hood made of structured stainless steel with lid made of perforated sheet metal
  • Attractive and professional design enhances your image
  • Hood very easy to open and close, supported by high-quality compressed-gas springs
  • Adjustable, large quick-release fasteners - can be used while working in gloves
  • Large handles on the left and right side of the hood for opening and closing the furnace
  • Angled sight ports with plugs let you see the progress of your work and cool quickly
  • Robust base on rollers (two of them can be locked down) with tray for glass and tools
  • Controller integrated to save space on the right side of the furnace
  • Other sizes or custom designs available on request
  • Comfortable charging height with base of 870 mm
  • Exhaust air flap on hood for rapid cooling as additional equipment
ModelTmaxInner dimensions in mmFloor spaceOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin m²WDload kWconnection*in kg
GF 75 950 620 620 310 0.38 1100 965 1310 3.6 1-phase 180
GF 75 R 950 620 620 310 0.38 1100 965 1310 5.5 3-phase¹ 180
GF 190 LE 950 1010 620 400 0.62 1480 965 1400 6.0 1-phase² 245
GF 190  950 1010 620 400 0.62 1480 965 1400 6.4 3-phase¹ 245
GF 240 950 1010 810 400 0.81 1480 1155 1400 11.0 3-phase 250
GF 380 950 1210 1100 400 1.33 1680 1465 1400 15.0 3-phase 450
GF 420 950 1660 950 400 1.57 2130 1315 1400 18.0 3-phase 500
GF 520 950 1210 1160 400 1.40 1680 1525 1400 15.0 3-phase 550
GF 600 950 2010 1010 400 2.03 2480 1375 1400 22.0 3-phase 600
GF 920 950 2110 1160 400 2.44 2580 1525 1400 26.0 3-phase 850
GF 1050 950 2310 1210 400 2.79 2780 1575 1400 32.0 3-phase 1050
GF 1425 950 2510 1510 400 3.79 2880 1875 1400 32.0 3-phase 1250
¹Heating only beetween two phases *Please see page 61 for more information about supply voltage ²Fusing of 32 A if connected to 230 V ³Base included
 

Fusing Furnaces with Wire Heating with movable Table

GFM 1050 GFM 1050 with electrically driven exhaust air flaps and locking mechanism for the cover

GFM 600 with changeable table system for shorter process times

Locking device provides for defi ned hood opening in different positions and accelerated cooling

Flap with inspection glass as additional equipment for easy observation of the glass.

 
GFM 420 - GFM 1050

The GFM product line was developed to meet the special requirements of production. For different applications different table depths can be supplied. Standard is a table for fusing. Various tables and tubs with different heights and numerous additional equipments are available as system add-ons. Especially economical is the alternating table system, in which one table is loaded while the other one is in the furnace.

  • Tmax 950 °C
  • Infrared heated in hood which is attached to stand
  • Delivered with one table
  • Table on wheels, freely movable
  • Level table surface with insulation made of robust lightweight refractory bricks and marked charge surface
  • Comfortable charging height with base of 870 mm
  • Heating element, protected in quartz tubes
  • High current connection capacities for short warm-up times and energy-saving way of working
  • Arranged closely beside each other on the top, heating elements ensure direct and uniform radiation of the glass
  • Solid state relays provide for low-noise operation
  • NiCr-Ni thermocouple inside the furnace for precise temperature measurement
  • Dual shell housing, adjustable hood made of structured stainless steel with lid made of perforated sheet metal
  • Hood insulation made of non-classified ceramic fibers for rapid warming up and cooling down
  • Attractive design and solid construction
  • Hood very easy to open and close, supported by high-quality compressed-gas springs
  • Adjustable, large quick-release fasteners - can be used while working in gloves
  • Large handles on the left and right side of the hood for opening and closing the furnace
  • Supply air and glass inspection ports with insulated doors, viewing window as an additional equipment

Additional equipment for fusing furnaces GF and GFM

  • Motor-driven lid opening for faster cooling, programmable via the extra controller function, for models GF 380 and/or GFM 380 up
  • Bottom heating for uniform through heating of large objects as additional equipment
  • Cooling fan for accelerated cooling with closed lid
  • Additional tables for extension of the furnace system
  • Exchangeable table system for utilization of the residual heat of the furnace. Cycle times can be shortened by changing the tables in warm condition (depending on the ability of the respective glass to cope with temperature change)
  • Exhaust air flap on hood for rapid cooling
  • Air inlet flap with window for observing the glass
ModelTmaxInner dimensions in mmFloor spaceOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin m²WDHload kWconnection*in kg
GFM 420 950 1650 850 380 1.40 2400 1480 1400 18 3-phase 410
GFM 520 950 1200 1150 380 1.38 1950 1780 1400 15 3-phase 430
GFM 600 950 2000 1000 380 2.00 2750 1630 1400 22 3-phase 610
GFM 920 950 2100 1150 380 2.42 2850 1780 1400 26 3-phase 740
GFM 1050 950 2300 1200 380 2.76 3050 1830 1400 32 3-phase 860
*Please see page 61 for more information about supply voltage
 

Tub Furnaces with Wire Heating

GW 1660  Top-hat furnace GW 2208/S tailor-made, electro-hydraulically driven hood, tub can be pulled out on rails

GW 2200

Indirect cooling behind the insulation for reduction of turbulences in the furnace chamber

Bottom heating covered by SiC tiles to create level stacking support

Automatic lid opening via electromechanical spindle

Motor-driven exhaust air flaps as additional equipment

GW 1660 with charge

GW 830 - GW 8000

For slumping and bending of complex glass parts, e.g. glass furniture, shower cabins, etc., tub furnaces are the right choice. Full coverage heating: from the lid, all 4 sides and the tub bottom. Due to the modular system additional tubs in customized dimensions can be provided.

  • Tmax 900 °C
  • Full coverage heating: from lid, all 4 sides and bottom
  • 3-zone temperature control from top to bottom for optimal temperature uniformity
  • Heating elements mounted on ceramic support tubes for free heat radiation and long service life
  • Bottom heating covered by SiC tiles
  • Hood insulated with high-quality fiber materials
  • Tub bottom insulated with multi-layer of insulation, lightweight refractory bricks on the hot face
  • Hinged hood as standard version
  • Gas operated dampers provide for easy hood opening
  • Manually operated exhaust air flaps
  • Tub on wheels can be pulled out manually
  • Rails on floor for perfect tub guidance included

Additional equipment

  • Furnaces tailor-made to individual customer measurements
  • Interchangeable table system on rails, electrically driven on request
  • Electro-hydraulically driven hood instead of hinged cover
  • Tub insert to elevate bottom height, in order to use the furnace for glass fusing applications (in this product version the tub heating can be switched off
  • Automatic lid opening for faster cooling, programmable via the controller extra function
  • Motor-driven exhaust air flaps in the hood for preselected cooling
  • Powerful cooling system An efficient fan system, mounted to the furnace, cools the dual shell housing from the back. This system shortens cooling times by up to 50 % subject to cycles and charge. Direct contact between the cooling air and charge, hence turbulences in the firing chamber are avoided, protecting the glass from any damage.
  • Interchangeable table system running on rails To shorten process times and optimise operational capacity, two or more furnace tubs, placed alternately under the hood, can be used. An automatic tub changing system is also available on request.
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin LWDHload kWconnection*in kg
GW 830 900 1200 1150 600 830 2140 1980 1250 36 3phase 820
GW 840 900 1650 850 600 840 2590 1680 1250 36 3phase 980
GW 1200 900 2000 1000 600 1200 2940 1830 1250 40 3phase 1210
GW 1500 900 2100 1150 600 1450 3040 1980 1250 70 3phase 1420
GW 1660 900 2300 1200 600 1660 3240 2030 1250 80 3phase 1780
GW 2200 900 2300 1200 800 2200 3240 2030 1400 90 3phase 2160
GW 8000 900 3700 2700 800 8000 9000 4750 1400 180 3phase 2980
*Please see page 61 for more information about supply voltage
 

Top-Hat Furnaces with Wire Heating with Table

 
  Furnace system HG 5208/S with two tables for bending and slumping of glass Top-hat furnace HG 1196/S with customized specifications, hood and table heating; table heating can be switched-off during fusing

HG 2000, standard version

Motor-driven exhaust air flaps as additional equipment

Heating elements in furnace hood

HG 750 - HG 7608/S

Nabertherm markets this range of top-hat furnaces for bending and slumping of large glass parts. The standard furnace is equipped with one table running on rails which can be pulled out for easy charging. As accessory an additional table can be integrated, which is charged while the other table is in the furnace. The furnace is heated from the ceiling and from the table.

  • Tmax 900 °C
  • Heating from lid and table
  • 3-zone temperature control (lid-inner circular element, lid-outer circular element, table) for optimal temperature uniformity
  • Table heating can be switched-off for fusing
  • Heating elements on supporting tubes provide for long service life
  • Table heating elements covered by SiC tiles for level stacking support
  • Hood insulated with high-quality fiber materials
  • Table insulated with multi-layer resistant, lightweight refractory bricks
  • Top-hat to be opened by overhead crane in floor shop
  • Protection guides for easy hood opening and closing
  • Manually-operated exhaust air flap
  • Furnace table on fixed chassis for user-friendly charging height (800 mm)

Additional equipment

  • Tailor-made furnaces in customized dimensions
  • Hood side heating in case of high hood dimensions
  • Interchangeable table system on rails, electrically powered on request
  • Electro-hydraulically driven hood
  • Cooling system
  • Table on wheels for free movement
  • Motor-driven exhaust air flaps
ModelTmaxInner dimensions in mmFloor spaceOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin m2WDHload kWconnection*in kg
HG 750 900 2100 1200 300 2,52 2550 1800 1350 35 3-phase 1200
HG 1000 900 1750 1000 550 1,75 2200 1450 1600 33 3-phase 1500
HG 1500 900 2100 1250 550 2,63 2550 1700 1600 44 3-phase 2000
HG 1800 900 2450 1850 400 4,35 2950 2350 1600 45 3-phase 2500
HG 2000 900 2450 1500 550 3,68 2900 1950 1600 55 3-phase 2500
HG 2640 900 3000 2200 400 6,60 3500 2700 1450 75 3-phase 3400
HG 3000 900 3500 2200 400 7,70 4000 2800 1600 75 3-phase 3800
HG 4800 900 5500 2100 400 11,55 6000 2700 1600 90 3-phase 4500
HG 5208/S 900 3100 2100 800 6,51 3990 2590 3140 110 3-phase 5000
HG 7608/S 900 3800 2500 800 9,50 4690 2990 3140 143 3-phase 7000
*Please see page 61 for more information about mains voltage

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