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Compact 2" Two Zone Rotary Tube Furnace @1200C Max For Powder CVD. - OTF-1200X-S-II-R

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OTF-1200X-S-II-R is a compact two zones rotary tube furnace with 2" quartz tube, designed for calcining inorganic compound with better uniformity, especially good for preparing Li-ion battery cathode powders with conductive coatings.



Furnace Construction
  • Double shell casing with three cooling fans
  • High purity Alumina fibrous insulation for max. energy saving
  • Gear DC motor drives quartz tube with variable speed 0 - 5 RPM
  • The split cover enables faster cooling and easy operation
  • Compact size for space-saving 
Heating Zone length
  • Two zones: each zone length 4" (100 mm), total 8" (200 mm) heating zone
  • Constant temperature zone: 100 mm within +/-2oC if two zones at the same temperature
Processing Tube
  • 2"  Fused quartz processing tube with mixing blade in the center, please click the pics below for details:
  •  Four Mixing Blades          Tube dimension

Inline Swivel Gas Fittings 

  • Two Inline Swivel Gas Fittings are included and connected to flanges, which allows gas pipe in place when the tube rotating ( 30 RPM max)
  • 1/4" gas tube is required to connect the Inline Swivel Gas Fittings to the gas tank
  • Click the picture left to see detailed specs
Max. Working Temperature 1100°C for continuously   1200 °C Max for < 2 hours
Temperature Control
  • Two PID digital temperature controller with 30 segment programmable,  +/- 1°C
  • Each heating zone's temperature  is controlled independently
  • Two Omega K type 3mm OD x 6" L with high-temperature tolerance (220°C) connector
Tube rotating Speed
 0 - 5 RPM variable
Furnace tilt angle
  • No tilting function
  • You can add a spacer at the bottom of the furnace to tile the furnace
Chamber pressure
 4.5x10-2 torr (<0.1mtorr/s leaking rate if close all the valves to airtight the tube chamber)
  1.5 KW Max
  • 110V AC or 208 - 240V with 3000W Transformer
  • single-phase (16 A Breaker or fuse required)
Warranty One-year limited warranty (Consumable parts such as processing tubes, o-rings, and heating elements are not covered by the warranty, please order the replacement at related products below.)  

(Click for more details)
  • Anti-Corrosive Capacitance Diaphragm Gauge with Power Supply, Up to 3.8E-5 Torr - PGC-554-LD
  • Inline Swivel Head (upto 3000PSI ) 1/4"FPT x 1/4" MPT, 30 Max. RPM - EQ-IS-1430
  •     - Left and Right Flange
  • The above features are available upon request at an extra cost. Please contact us for more information.
  • CE Certified
  • NRTL (UL61010) or CSA certification is available upon request at an extra cost
 Furnace dimension:
 Product net weight
25 Kg
 Shipping dimension  
 Shipping weight 150 lbs
Application Notes
  • The concept of continuous power feeding and processing can be realized by the use of Magnetic Fluid Sealed Swivel Coupling in line with Volumetric Feeder and Rotary Furnace. Please view the assembling approach diagram and video below
  • For CVD coating, you may choose our multi-channel Gas delivery and automatic feeding system as Pic below 
Operation Video
  • The tube furnaces with quartz tube are designed for use under vacuum and low pressure < 0.2 bars
  • Attention: A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.
  • Vacuum limit definition for all quartz tube furnaces: * Vacuum pressures may only be safely used up to 1000°C

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