Bell jar furnace


  • Therelek’s Bell furnace is designed with optimal performance for high sensitivity and delicate components.
  • The furnace chamber is cylindrical in shape and the assembly is double walled to attain high quality surface finish for the material.
  • Molybdenum or tungsten assembly is placed inside the chamber for heating with greater ease when loading materials for processing.
  • The retort serves for increasing the temperature uniformity and protecting the heat zone from volatile processes.
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Temperature Range :

Upto 1500°C

Standard Applications:

Wire annealingAnnealing/annealing under protective atmosphere, Isothermal Annealing, Brazing, Sintering, Vacuum Hardening, Vacuum Stress Relieving, Vacuum Tempering, Laboratory Applications

Heating Media Options:

Electric / Gas Fired / Oil Fired

Heating Elements :

Nichrome Wire / Special Alloy Resistance Heating Wire / Silicon Carbide Rod Type

Furnace Classification:

Class 2 / Class 3

Instrumentation options:

Thyristor, Programmable Temperature Controller, Temperature Recorder, PLC, SCADA, HMI