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1200C 1-3 Zone Rotary & Tilting Top-Open Tube Furnace


Ai STF1200 series top-open tube furnaces feature the famous Kanthal (Sweden) spiral wire coils embedded in Mitsubishi (Japan) high quality grade 1500 alumina fiber insulation. A double walled steel internal housing helps minimize heat loss to exterior surface.

Furnace operation is controlled by Eurotherm multi-segment digital controller, allowing the user to connect to a PC for remote control and monitoring of the furnace.

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  • 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.)
  • Built-in ammeter and dual voltmeters for easy monitoring and troubleshooting.
  • Built-in computer interface.
  • 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.


General Specifications


Electrical requirements 208-240VAC, 50/60 Hz, single phase
Rotation speed & inclination 0 to 20 rpm, 0 to 30°
Tube material Quartz
Maximum working vs constant temperatures Working: 1200°C (2 hours maximum continuous run time)
Constant: 1100°C
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 (Sweden) A1 2.0 resistance coil wire
Thermocouple type K
Refractory lining Mitsubishi (Japan) high quality 1500 grade fiber alumina
Temperature controller Eurotherm multi-segment digital controller
Maximum heating rate < 30°C / min
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″ BSPT (British Standard Pipe Thread)

Model Comparison


Zone 1-Zone 1-Zone 2-Zone 2-Zone 3-Zone 3-Zone
Tube size (OD x L) 60mmx1.2m 120mmx1.2m 60mmx1.2m 120mmx1.6m 60mmx1.4m 120mmx2m
Tube center with baffle
(diameter x L in mm)
100x280L 200x280L 100x280L 200x380L 100x380L 200x380L
Heating zone 16″ 16″ 8+8″ 16+16″ 8+8+8″ 16+16+16″
Maximum output 3.5 kW 6 kW 3.5 kW 12 kW 10 kW 18 kW
Eurotherm controller 1 pc 1 pc 2 pcs 2 pcs 3 pcs 3 pcs
Furnace dimensions (LxWxH) 36x18x55″ 38x20x57″ 36x18x55″ 42x20x57″ 38x21x56″ 46x22x59″
Shipping dimensions (LxWxH) 39x22x59″ 41x23x61″ 39x22x59″ 45x23x61″ 41x25x60″ 50x25x63″
Shipping weight (Lb) 330 400 330 400 370 460








How to Install an Across International Tube Sealing Flange


Standard Package



Part description






Part image


RTF1200 top-open rotary and tilting tube furnace 1 pc
Quartz tube 1 pc
Stainless steel vacuum sealing flanges w/ pressure gauge 1 set
Analog flow meter 1 pc
Stainless steel hook 1 pc
Tube thermal block 2 pairs
Alumina crucible 5 pcs
Thermal gloves 1 pair
Spare fuse 2 pcs
USB/RS485 computer interface kit 1 set
L6-30P 250 volt twist-lock plug Pre-installed
Furnace and Shimaden controller manual 2 pcs

Additional information

Choose model

1200C rotary/tilting tube furnace 60mm OD 1-zone, 1200C rotary/tilting tube furnace 120mm OD 1-zone (+$4,000.00), 1200C rotary/tilting tube furnace 60mm OD 2-zone (+$3,000.00), 1200C rotary/tilting tube furnace 120mm OD 2-zone (+$10,000.00), 1200C rotary/tilting tube furnace 60mm OD 3-zone (+$5,000.00), 1200C rotary/tilting tube furnace 120mm OD 3-zone (+$15,000.00)

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 9 cfm 2-Stage pump w/ filter (+$790.00), Ai 110/220V SuperVac 5.6 cfm 0.3 micron pump (+$1,600.00), Ai 110V SuperVac 11cfm 0.3 micron pump (+$2,300.00), Edwards 110/220V 6.9 cfm RV8 pump (+$2,690.00), Edwards 110/220V 21 cfm E2M28 pump (+$4,863.00), Edwards 110/220V 7.5 cfm nXDS10iC pump (+$6,667.00)


No additional accessories (no extra charge), 2 quarts (1.9 L) of ultra grade 19 pump oil (+$34.00), EZ-Swap vacuum pump exhaust filter w/ fittings (+$159.00)