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Lindberg/Blue M™ 1500 °C Crucible Furnace

Crucible Furnace

Our 1500°C Crucible Furnace is designed for easy maintenance and convenient operation. The efficient design allows for dependability and durability. Insulation aids in heating uniformity for precise, uniform temperature control which is required for today’s high-temperature processes. This unit automatically sets the PID values for your thermal process.


  • Easy maintenance
  • Convenient operation
  • Efficient design allows for dependability and durability
  • Insulation aids in heating uniformity
  • Precise and uniform temperature control required for today's high-temperature processes
  • Automatically sets the PID values for your thermal process



  • Vertical, single-ended silicon carbide heating elements
  • High-temperature grade insulation
  • Tight-fitting insulating vestibule plug
  • Platinum/ Platinum 13% rhodium thermocouple lead wire and plug
  • Self-tuning temperature controller
  • Programmable heat-up to setpoint temperature
    • Indicates setpoint and process temperatures simultaneously
  • Excess temperature protection
    • Provides positive protection of both furnace and load in the event of failure in the primary control circuit
    • Redundant circuit includes separate analog setting instrument with manual reset push-button, magnetic contractor and independent thermocouple


  • Pots
  • Inert atmosphere retorts
  • Atmosphere retort limits the maximum temperature capacity to 1050 °C in lieu of 1500 °C with retort installed
  • Combustible gas safety system
  • Computer communications software
  • Programmable control (Option P)
  • Offers flexibility of ramping to multiple setpoint levels and holding for variable time periods at those levels
  • Digital communication kits
    • Allow modification and interrogation of all instrument control and configuration parameters from a remote computer
    • Ethernet communications available
  • Available to interface with RS-232 or RS-422/485 communication ports
  • Available controllers: Models 58125 and 58155
Model Top Vestibule ID
inches (cm)
Heated Depth
inches (cm)
Wattage Overall Dim.
inches (cm)
Use w/
Control Type
Shipping Weight lbs.
56623 5 (12.7) 8 (20.3)
6,140 30x33x33
56953 9 (22.9) 12 (30) 6,800 33x35x35
(83.8x 88.9x88.9)
58125 700
56253 12 (30) 12 (30) 12,000 34x38x38
58155 710
56283 12 (30) 18 (45.7) 14,800 38x39x39
58155 800
1500°C Crucible
Controller Models
Preset TC Input
Preset Control
Voltage Hertz Overall Size
HxWxD in inches (cm)
Shipping Weight lbs.
58125 Type R 1-1500°C
60 Amp 208/240 50/60
10 x 14 x 19
(25.4 x 35.6 x 48.3)
58155 Type R 1-1500°C 90 Amps 208/240 50/60 17 x 17 x 21
(43.2 x 43.2 x 53.3)
Specifications and Product Information are subject to change without notice.