Compact Rotary Top-Open Tube Furnace

Category Furnaces
Manufacturer Across International

RTF1200 25mm OD compact top-open rotary tube furnaces feature spiral wire coils embedded in Mitsubishi (Japan) alumina fiber insulation. A double walled steel internal housing helps minimize heat loss to exterior surface. Furnace operation is controlled by a multi-segment digital controller.


  • Compact, portable and lightweight design.
  • Top-open furnace chamber for fast and easy tube access.
  • Standard package includes set of stainless steel vacuum sealing flanges with valves and pressure meter.
  • Microprocessor based self-tuning PID control provides optimum thermal process with minimal overshoot.
  • Multiple atmosphere processes in a single cycle are possible (ex: binder burn out in air and parts sintering under rough vacuum or inert gas environment.)
  • Overheat protection shuts down the furnace if temperature is outside of acceptable range (refer to controller's manual) or when the thermocouple is broken or malfunctions.
  • Power failure protection resumes furnace operation right after the point of failure when power is reestablished.
  • Limit switch turns off furnace once top is open

Tubing sold separately. 

Note: Warning! NEVER fill furnace with explosive gases, including Hydrogen, Carbon Monoxide and Methane.

Key Attributes
Max Temperature 1200°C
Max Capacity N/A
Air Movement N/A
Electrical  115V, 50/60Hz, 1~phase, 1,500 watts
Warranty 1 year
Manufacturer Specifications
Electrical requirements  115V, 50/60Hz, 1~phase, 1,500 watts
 25mm OD x 700mm L, Quartz
 * 2" diameter x 5" L in the center with baffle
 Maximum working temperature  1200°C (2 hours maximum continuous run time)
 Constant working temperature  1100°C
 Rotation speed  0 to 20 rpm
 Constant working temperature under vacuum  1000°C
 Rated vacuum pressure  0.001 Pa / 0.0075 millitorr / 0.00001 mbar
 Rated positive pressure  0.02 MPa / 150 torr / 3 psi
 Heating element type
 Resistance coil wire
 Thermo couple type  K
 Refractory lining  Mitsubishi (Japan) 1500 grade fiber alumina
 Temperature controller  Single PID, 30 segments
 Maximum heating rate  < 30°C/min (recommended 15°C/min)
 Heating zone length  8"
 Temperature controller precision
 +/- 1°C
 Vacuum sealing flange kit

 Stainless steel vacuum sealing flanges with one vacuum gauge, two valves and four thermal ceramic blocks.

 Gas inlet/outlet  1/4" hose barb with 1/4" BSPP (British standard parallel pipe)
 Unit dimensions  23 x 14 x 17.5" (WxDxH) without tube
 Unit weight  140 Lb

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