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  Bogie hearth furnace with gas box for non-flammable protective or reaction gases Bogie hearth furnace W 2060/S without bogie heating for preheating fusion molds

W 1500/H

Bogie hearth furnace W 3300 for crucible coating

W 8250/S for tempering quartz glass

Bogie hearth furnace with gas box for non-flammable protective or reaction gases

W 1000 - W 10000/14, W 1000/DB - W 10000/14DB

When cooling, decorating, glazing or sintering special glass during production, bogie hearth furnaces offer numerous advantages. Due to their very good temperature uniformity, these models are perfectly suited for burning in a separation layer of silicon nitride in crucibles for the solar industry. The bogie can be charged outside the furnace. Several shuttles can be used, so that one shuttle can be charged while the other shuttle is in the furnace.

  • Tmax 1280  °C, 1340  °C or 1400  °C
  • Dual shell housing with rear ventilation, provides for low shell temperatures
  • Swing door hinged on the right side
  • Heating from five sides (four sides and bogie) provides for an optimum temperature uniformity
  • Bogie heating receives power via blade contacts when driven in
  • Heating elements mounted on support tubes provide for free radiation and long service life
  • Bottom heating protected by SiC tiles on the bogie providing level stacking surface
  • Multi-layer insulation consisting of lightweight refractory bricks backed by microporus silica insulation
  • Self-supporting and long-life ceiling construction with bricks laid in arched construction, for models up to 1340  °C or as fiber insulation
  • Roof made of high-quality fiber material for models with Tmax 1400  °C
  • Freely moveable bogie with rubber wheels up to model W 3300
  • Adjustable air inlet damper
  • Manual exhaust air flap on the furnace roof
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Fiber insulation also in combination with meander shaped heating for short heating times
  • Bogies with flanged wheels running on rails for easy and precise movement of high loads or complex kiln furniture
  • Electric chain-driven bogie in combination with rail operation for smooth movement of heavy loads
  • Bogie running on steel wheels with gear rack drive, no rails in front of the furnace necessary
  • Different possibilities for an extension to a bogie hearth furnace system:
    • Additional bogies
    • Bogie transfer system with parking rails to exchange bogies running on rails or to connect multiples furnaces
    • Motor-driven bogies and cross-traversal system
    • Fully automatic control of the bogie exchange
  • Electro-hydraulic lift door
  • Customized kiln furniture
  • Motor-driven exhaust air flap, switchable via the program
  • Uncontrolled or controlled cooling system with frequency-controlled cooling fan and motor-driven exhaust air flap
  • Multi-zone control adapted to the particular furnace provides model for optimal the temperature uniformity
  • Commissioning of the furnace with test firing and temperature uniformity measurement (also with load) for the purpose of process optimization
  • Thermal or catalytic exhaust cleaning systems
  • Process documentation and control with Controltherm MV software package, NTLog and NTGraph for the basic furnace or Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin lWDHload kWconnection*in kg
W 1000/G 900 800 1600 800 1000 1470 2410 1915 40 3-phase 3000
W 1500/G 900 900 1900 900 1500 1570 2710 2030 57 3-phase 3500
W 2200/G 900 1000 2200 1000 2200 1670 3010 2140 75 3-phase 4500
W 3300/G 900 1000 2800 1200 3300 1670 3610 2355 110 3-phase 5300
W 5000/G 900 1000 3600 1400 5000 1670 4410 2555 140 3-phase 7300
W 7500/G 900 1000 5400 1400 7500 1670 6210 2555 185 3-phase 11300
W 10000/G 900 1000 7100 1400 10000 1670 7910 2555 235 3-phase 12500
                       
W 1000 1280 800 1600 800 1000 1470 2410 1915 57 3-phase 3000
W 1500 1280 900 1900 900 1500 1570 2710 2030 75 3-phase 3500
W 2200 1280 1000 2200 1000 2200 1670 3010 2140 110 3-phase 4500
W 3300 1280 1000 2800 1200 3300 1670 3610 2355 140 3-phase 5300
W 5000 1280 1000 3600 1400 5000 1670 4410 2555 185 3-phase 7300
W 7500 1280 1000 5400 1400 7500 1670 6210 2555 235 3-phase 10300
W 10000 1280 1000 7100 1400 10000 1670 7910 2555 300 3-phase 12500
                       
W 1000/H 1340 800 1600 800 1000 1470 2410 1915 75 3-phase 3500
W 1500/H 1340 900 1900 900 1500 1570 2710 2030 110 3-phase 4000
W 2200/H 1340 1000 2200 1000 2200 1670 3010 2140 140 3-phase 5000
W 3300/H 1340 1000 2800 1200 3300 1670 3610 2355 185 3-phase 6000
W 5000/H 1340 1000 3600 1400 5000 1670 4410 2555 235 3-phase 8000
W 7500/H 1340 1000 5400 1400 7500 1670 6210 2555 370 3-phase 11300
W 10000/H 1340 1000 7100 1400 10000 1670 7910 2555 440 3-phase 13800
                       
W 1000/14 1400 800 1600 800 1000 1470 2410 1915 75 3-phase 3300
W 1500/14 1400 900 1900 900 1500 1570 2710 2030 110 3-phase 3800
W 2200/14 1400 1000 2200 1000 2200 1670 3010 2140 140 3-phase 4800
W 3300/14 1400 1000 2800 1200 3300 1670 3610 2355 185 3-phase 5700
W 5000/14 1400 1000 3600 1400 5000 1670 4410 2555 235 3-phase 7700
W 7500/14 1400 1000 5400 1400 7500 1670 6210 2555 370 3-phase 10900
W 10000/14 1400 1000 7100 1400 10000 1670 7910 2555 440 3-phase 13300
*Please see page 61 for more information about supply voltage
 

High-Temperature Bogie Hearth Furnaces with SiC Rod Heating up to 1550 °C

WHTC 3300/15 WHTC 4000/15 with bogie on rails and fan cooling

SiC rod elements on both sides of the furnace

Design with two doors and two bogies, on rails, allows for rapid bogie changes

Bogie hearth furnaces equipped with SiC rod heating can be used for processes up to 1550 °C. The WHTC product line with especially robust design can hold heavy charges including kiln furniture. The furnace chamber is equipped with a high-quality insulation made of high-temperature fiber blocks. The bogie insulation is structured in multi-layer lightweight refractory bricks on the heating chamber side.

The furnace is heated along both sides by vertically installed SiC heating rods. This heating technology permits processes requiring working temperatures above 1350 °C which cannot achieved with wire heating elements. The SiC rods are controlled by thyristor controller which counteract the aging of the heating elements by means of automatic power compensation.

Additional equipment The WHTC bogie hearth furnaces can be equipped with extensive additional equipment to be optimally adapted to individual processes.

  • Tmax 1550  °C
  • Dual shell housing with rear ventilation, provides for low shell temperatures
  • Swing door hinged on the right side
  • Heating from both sides via vertically mounted SiC rods
  • Thyristor controllers with automatic output compensation counteract the aging of SiC rods
  • Multi-layer insulation with high-quality fiber modules on the heating chamber side
  • Bogie for heavy loads lined with lightweight refractory bricks
  • Bogie hand driven on rubber tires
  • Motor-driven exhaust air flap on the furnace roof
  • Over-temperature limiter with manual reset for thermal protection class 2, as defined in EN 60519-2, to protect the furnace and charge
  • Defined application within the constraints of the operating instructions
 

Chamber Furnaces with Wire Heating up to 1400 °C

N 2900 N 1680/S for long parts

Chamber furnace with fiber insulation for shorter cycle times

Charging trolley for N 2200

N 4260/S for production for fiber-optic cables

N 100 - N 2200/14

These high-quality chamber furnaces for firing, sintering and tempering have qualified themselves with the reliability for many years in daily use. Thanks to their five-side heating, the furnaces provide for a very good temperature uniformity. A wide range of additional equipment perfectly adapt these models to the process requirements.

  • Tmax 1300  °C, 1340  °C or 1400  °C
  • Five-side heating provide for good temperature uniformity
  • Heating elements on support tubes provide for free heat radiation and long service life
  • Vapour vent in the middle of the roof (excellent ventilation)
  • Smoothly adjustable and easy-to-operate air inlet flap or sliding damper
  • Self-supporting and long-life ceiling construction, with bricks laid in arched construction
  • Special door lock for easy handling
  • Multi-layer insulation consisting of lightweight refractory bricks and backed by special fiber insulation
  • Models up to N 300/.. with removable stand
  • Bottom heating elements protected by SiC tiles for level stacking surface
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Motor-driven exhaust air flap
  • Fan system for faster cooling with manual or automatic control
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Manual or automatic gas supply systems
  • Fiber-insulation for shorter cycle times, especially cooling periods
  • Multi-zone control for optimal temperature uniformity in the work space
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin lWDHload kWconnection*in kg
N 100/G 900 400 530 460 100 710 1150 1440 7 3-phase 275
N 150/G 900 450 530 590 150 760 1150 1570 9 3-phase 320
N 200/G 900 500 530 720 200 810 1150 1700 11 3-phase 345
N 300/G 900 550 700 780 300 860 1320 1760 15 3-phase 450
N 440/G 900 600 750 1000 450 1000 1470 1830 20 3-phase 780
N 660/G 900 600 1100 1000 660 1000 1820 1830 26 3-phase 950
N 1000/G 900 800 1000 1250 1000 1390 1760 2000 40 3-phase 1680
N 1500/G 900 900 1200 1400 1500 1490 1960 2150 57 3-phase 2300
N 2200/G 900 1000 1400 1600 2200 1590 2160 2350 75 3-phase 2800
                       
N 100 1300 400 530 460 100 710 1150 1440 9 3-phase 275
N 150 1300 450 530 590 150 760 1150 1570 11 3-phase 320
N 200 1300 500 530 720 200 810 1150 1700 15 3-phase 375
N 300 1300 550 700 780 300 860 1320 1760 20 3-phase 450
N 440 1300 600 750 1000 450 1000 1470 1830 30 3-phase 780
N 660 1300 600 1100 1000 660 1000 1820 1830 40 3-phase 950
N 1000 1300 800 1000 1250 1000 1390 1760 2000 57 3-phase 1800
N 1500 1300 900 1200 1400 1500 1490 1960 2150 75 3-phase 2500
N 2200 1300 1000 1400 1600 2200 1590 2160 2350 110 3-phase 3100
                       
N 100/H 1340 400 530 460 100 740 1170 1440 11 3-phase 325
N 150/H 1340 450 530 590 150 790 1170 1570 15 3-phase 380
N 200/H 1340 500 530 720 200 840 1170 1700 20 3-phase 430
N 300/H 1340 550 700 780 300 890 1340 1760 27 3-phase 550
N 440/H 1340 600 750 1000 450 1000 1470 1820 40 3-phase 880
N 660/H 1340 600 1100 1000 660 1000 1820 1830 52 3-phase 1080
N 1000/H 1340 800 1000 1250 1000 1390 1760 2000 75 3-phase 2320
N 1500/H 1340 900 1200 1400 1500 1490 1960 2150 110 3-phase 2700
N 2200/H 1340 1000 1400 1600 2200 1590 2160 2350 140 3-phase 3600
                       
N 100/14 1400 400 530 460 100 740 1170 1440 15 3-phase 325
N 150/14 1400 450 530 590 150 790 1170 1570 20 3-phase 350
N 200/14 1400 500 530 720 200 840 1170 1700 22 3-phase 430
N 300/14 1400 550 700 780 300 890 1340 1760 30 3-phase 550
N 440/14 1400 600 750 1000 450 1000 1450 1820 40 3-phase 1320
N 660/14 1400 600 1100 1000 660 1000 1800 1820 57 3-phase 1560
N 1000/14 1400 800 1000 1250 1000 1390 1760 2000 75 3-phase 2500
N 1500/14 1400 900 1200 1400 1500 1490 1960 2150 110 3-phase 3000
N 2200/14 1400 1000 1400 1600 2200 1590 2160 2350 140 3-phase 3900
*Please see page 61 for more information about supply voltage
 

Chamber Furnaces with Wire Heating with Brick Insulation or Fiber Insulation

 
  LH 60/12 with manual lift door and gas supply box for non-flammable protective or reactive gases LH 216/12SW with scale to measure weight reduction during annealing 

LH 120/12S process box made of quartz glass

Cooling fan in combination with motor-driven exhaust air flap to reduce cooling time

LH 15/12 - LF 120/14

The LH 15/12 - LF 120/14 laboratory furnaces have been trusted for many years as professional chamber furnaces for the laboratory. These furnaces are available with either a robust insulation of light refractory bricks (LH models) or with a combination insulation of refractory bricks in the corners and low heat storage, quickly cooling fiber material (LF models). With a wide variety of optional equipment, these models can be optimally adapted to your processes.

  • Tmax 1200  °C, 1300  °C, or 1400  °C
  • Five-sided heating for very good temperature uniformity
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Protection of bottom heating and flat stacking surface provided by embedded SiC plate in the floor
  • LH models: multi-layered, fiber-free insulation of light refractory bricks and special backup insulation
  • LF models: high-quality fiber insulation with corner bricks for shorter heating and cooling times
  • Door with brick-on-brick seal, hand fitted
  • Short heating times due to high installed power
  • Side vent with bypass connection for exhaust pipe
  • Self-supporting arch for high stability and greatest possible protection against dust
  • Quick lock on door
  • Freely adjustable air slide intake in furnace floor
  • Stand included
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Parallel swinging door, pivots away from operator, for opening when hot
  • Lift door with electro-mechanic linear drive
  • Separate wall-mounting or floor standing cabinet for switchgear
  • Motor-driven exhaust air flap
  • Cooling fan for shorter cycle times
  • Protective gas connection to purge with non-flammable protective or reaction gases
  • Process box made of quartz glass for very clean atmosphere, quartz glass covered door with lid function
  • Manual or automatic gas supply system
  • Scale to measure weight reduction during annealing
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin lWDHload kWconnection*in kg
LH 15/12 1200 250 250 250 15 570 790 1170 5.0 3-phase¹ 150
LH 30/12 1200 320 320 320 30 640 860 1240 7.0 3-phase¹ 170
LH 60/12 1200 400 400 400 60 720 1010 1320 8.0 3-phase 260
LH 120/12 1200 500 500 500 120 820 1110 1420 12.0 3-phase 340
LH 216/12 1200 600 600 600 216 900 1210 1530 20.0 3-phase 400
                       
LH 15/13 1300 250 250 250 15 570 790 1170 7.0 3-phase¹ 150
LH 30/13 1300 320 320 320 30 640 860 1240 8.0 3-phase¹ 170
LH 60/13 1300 400 400 400 60 720 1010 1320 11.0 3-phase 260
LH 120/13 1300 500 500 500 120 820 1110 1420 15.0 3-phase 340
LH 216/13 1300 600 600 600 216 900 1210 1530 22,0 3-phase 400
                       
LH 15/14 1400 250 250 250 15 570 790 1170 8.0 3-phase¹ 150
LH 30/14 1400 320 320 320 30 640 860 1240 10.0 3-phase¹ 170
LH 60/14 1400 400 400 400 60 720 1010 1320 12.0 3-phase 260
LH 120/14 1400 500 500 500 120 820 1110 1420 18.0 3-phase 340
LH 216/14 1400 600 600 600 216 900 1210 1530 26,0 3-phase 400
                       
LF 15/13 1300 250 250 250 15 570 790 1170 7.0 3-phase¹ 130
LF 30/13 1300 320 320 320 30 640 860 1240 8.0 3-phase¹ 150
LF 60/13 1300 400 400 400 60 720 1010 1320 11.0 3-phase 230
LF 120/13 1300 500 500 500 120 820 1110 1420 15.0 3-phase 300
                       
LF 15/14 1400 250 250 250 15 570 790 1170 8.0 3-phase¹ 130
LF 30/14 1400 320 320 320 30 640 860 1240 10.0 3-phase¹ 150
LF 60/14 1400 400 400 400 60 720 1010 1320 12.0 3-phase 230
LF 120/14 1400 500 500 500 120 820 1110 1420 18.0 3-phase 300
¹Heating only between two phases *Please see page 61 for more information about supply voltage
 

Lift-Top or Lift-Bottom Furnaces with Wire Heating up to 1400 °C

 
H 1000/LB H 1600/14DB  

Lift-top furnace H 240/S. Table accessible from four sides for welding quartz glass constructions by vertical and horizontal moveable top-hat

Lift-top system H 245/LTS with cooling station and table changing system

Lift-top furnace with alternating table system and protective gas boxes for sintering in non-flammable protective and reaction gas

Kiln furniture for small ceramics components

H 125/LB or LT - H 3000/LB or LT

These furnaces were specially developed for cooling complex structures or when the process requires the treatment of warm glass, e.g., the welding process in glass apparatus manufacturing. The wide-opening electro-hydraulically driven hood allows furnace opening even at high temperatures and provides easy access from 3 sides.

  • Tmax 1280  °C
  • Dual shell housing with rear ventilation for low shell temperatures
  • Electrohydraulically driven hood with fixed table
  • Five-sided heating from all four sides and from the table provides for a good temperature uniformity
  • Heating elements mounted on support tubes provide for free radiation and long service life of the heating wire
  • Bottom heating protected by SiC tiles which provide for a level stacking surface
  • Multi-layer insulation consisting of lightweight refractory bricks backed by special insulation
  • Long-life ceiling design with fiber insulation
  • Manual exhaust air flap on the furnace roof
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Tmax to 1400  °C
  • Lift-bottom furnace version with driven table and fixed hood
  • Uncontrolled or controlled cooling system with frequency-controlled cooling fan and motor-driven exhaust air vent
  • Protective gas connection for purging the furnace with non-flammable protective or reaction gases
  • Manual or automatic gas supply systems
  • Multi-zone control adapted to the particular furnace provides model for optimal the temperature uniformity
  • Commissioning of the furnace with test firing and temperature uniformity measurement (also with load) for the purpose of process optimization
  • Additional tables, table changing system, also motor-driven
  • Motor-driven exhaust air flap, switchable via the program
  • Exhaust air and exhaust gas piping
  • Thermal or catalytic exhaust cleaning systems
  • Heat recovery systems
  • Process documentation and control with Controltherm MV software package, NTLog and NTGraph for the basic furnace or Nabertherm Control Center (NCC) for monitoring, documentation and control
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin lWDHload kWconnection*in kg
H 125/LB, LT 1280 800 400 400 125 1570 1280 2000 12 3-phase 1250
H 250/LB, LT 1280 1000 500 500 250 1770 1380 2200 18 3-phase 1400
H 500/LB, LT 1280 1200 600 600 500 2050 1780 2500 36 3-phase 1800
H 1000/LB, LT 1280 1600 800 800 1000 2250 2000 2900 48 3-phase 2800
H 1350/LB, LT 1280 2800 620 780 1360 3750 2050 3050 75 3-phase 3500
H 3000/LB, LT 1280 3000 1000 1000 3000 4000 2100 3200 140 3-phase 6200
*Please see page 61 for more information about supply voltage
 

Top-Hat Furnaces with SiC Rod Heating

HC 1500 HC 1275 with moveable table

Manually or electrically driven table as option 

Heating from 4 sides with SiC rods 

HC 665 - HC 1500

For temperatures beyond 1350 °C we recommend furnaces with SiC rod heating. The top-hat construction with 4-sides heating provides for exceptional temperature uniformity.

  • Tmax of 1400 °C, 1450 °C or 1500 °C
  • SiC rod heating on 4 sides of the furnace hood for short cycle times and high temperature uniformity
  • High electrical connected power for short cycle times
  • Hood insulation made from fiber materials provides for short cycle time and low energy consumption
  • Table built from lightweight refractory bricks allows for heavy loads and level stacking surface
  • Electro-hydraulic driven hood for vibration-free opening and closing of furnace hood
  • Thyristor powered heating
  • Defined application within the constraints of the operating instructions
  • Controls description see page 61
ModelTmaxInner dimensions in mmVolumeOuter dimensions in mmConnectedElectricalWeight
 °Cwdhin lWDHkoad kWconnection*in kg
HC 665 1400 1100 550 1100 665 2350 2050 4000 186 3-phase 3000
HC 1275 1400 850 1000 1500 1275 2100 2500 4400 180 3-phase 4100
HC 1440 1400 840 2400 840 1690 2100 3900 3560 400 3-phase 4700
HC 1500 1400 1000 1000 1500 1500 2250 2500 4400 190 3-phase 5300
                       
HC 1280 1450 800 1600 1000 1280 2050 3100 3900 151 3-phase 4200
                       
HC 700 1500 800 800 1100 700 2050 2300 4000 100 3-phase 3100
HC 1400 1500 800 1600 1100 1400 2050 3100 4000 151 3-phase 4500
*Please see page 61 for more information about supply voltage
 

Pit-Type and Top-Loading Furnaces, Electrically Heated or Gas-Fired with or without Air Circulation 

SAT 1512/85S S 5120/GS1, furnace chamber divided in two sections, split cover

S 4100/S for sintering of high parts

Furnace chamber S 5120/GS with receptacle for an insulating plate in order to devide the furnace chamber

Our top-loading furnaces are perfectly suited for the heat treatment of longer or heavier components. The furnace is usually charged with a factory crane. Due to their high-performance air recirculation system, the furnaces provide for excellent temperature uniformity up to a maximum temperature of 850 °C. The top-loading furnaces for the temperature range up to 1280 °C provide for very good temperature uniformity due to their five-side heating. Alternatively, these furnaces can also be provided with gas heating. Customized dimensions are designed and produced to accomodate the size and weight of the components to be treated.

  • Tmax 260  °C, 450  °C, 600  °C or 850  °C for furnaces with air recirculation
  • Tmax 900  °C or 1280  °C for furnaces with radiant heating
  • Electrically heated or gas-fired
  • Heating from both long sides for furnaces with air recirculation
  • Heating from all four sides and the floor with SiC plates in the floor as level stacking support for models to 900  °C or 1280  °C
  • High-quality insulation, adapted to the specific maximum temperature
  • Electrohydraulic opening system of the lid with two-hand operation
  • Closable air supply vents in the lower area of the furnace chamber
  • Closable exhaust air vents in the lid
  • Over-temperature limiter with manual reset for thermal protection class 2 in accordance with EN 60519-2 as temperature limiter to protect the furnace and load
  • Defined application within the constraints of the operating instructions

Additional equipment

  • Motor-driven exhaust air flaps for faster cooling
  • Controlled fan cooling with motor-driven exhaust air flaps
  • Multi-zone control of the heating provides for optimum temperature uniformity
  • Furnace chamber can be devided in length for short workparts, partitions can be controlled separately
  • Designed for Tmax 950  °C, fan blade driven indirectly via a belt to protect the air recirculation motor against over-heating
  • Process control and documentation with Controltherm MV software package

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