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


STF1200 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.

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SKU: RTF1200.25 Categories: ,


  • 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.


 Electrical requirements 115V, 50/60Hz, 1~phase, 1,500 watts
 Tube  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


How to Install an Across International Tube Sealing Flange





Standard package

Part description  Quantity Part image 
 STF1200 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

 Tube thermal block 4 pcs

 Spare fuse2 pcs
 Thermal gloves 1 pair

 Furnace operation manual 1 pc

Additional information

Weight140 lbs
Dimensions23 × 14 × 17.5 cm
Vacuum setup

3/8" hose barb with no pump (no extra charge), KF25 flange port with no pump (no extra charge), Ai 110/220V EasyVac 7 cfm pump w/ mist filter (+$590.00), Ai 110/220V EasyVac 9 cfm 2-Stage pump w/ filter (+$790.00), Ai 110/220V SuperVac 5.6 cfm 0.3 micron pump (+$1,890.00), Ai 110V SuperVac 11cfm 0.3 micron pump (+$2,690.00)


No additional accessories (no extra charge), 2 quarts (1.9 L) of ultra grade 19 pump oil (+$44.00), EZ-Swap vacuum pump exhaust filter w/ fittings (+$159.00)

Delivery liftgate service

I do not need liftgate service +$0.00, Yes, I need liftgate service +$45.00


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