1200C 1-Zone 25mm OD Compact Rotary Top-Open Tube Furnace

Price: $6,590.00
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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.)
  • Long life type K thermocouple.


  • 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

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


How to Install an Across International Tube Sealing Flange



 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
 Kanthal-A1 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
Standard Packages

Standard package


Part description    






Part image 


 RTF1200 25mm OD top-open rotary tube furnace  1 pc

 Quartz tube 25mm OD x 700mm L
  * 2" diameter x 5" L in the center with baffle
1 pc

 Stainless steel vacuum sealing flanges w/ pressure meter   1 set

 Stainless steel hook  1 pc

 Thermal block 1 set

 Spare fuse 2 pcs
 Thermal gloves  1 pair

 Furnace operation manual  1 pc


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