SATO-115 AVC/OSC Open Head Orbital Weld Head

TUBE OD RANGE: 0.75 – 4.5″ / 19 – 115 mm
COOLING SYSTEM: Water-cooled or liquid-cooled torch
FUNCTION: Orbital TIG welding with AVC/OSC system

The SATO-115 AVC/OSC open head orbital weld head is engineered for high-precision orbital TIG welding on tube diameters from 0.75 to 4.5 inches. Designed for demanding industries such as power generation, chemical processing, and petrochemical applications, this system delivers consistent, high-quality welds on stainless steel and exotic alloys.

Equipped with integrated arc voltage control and oscillation, the SATO-115 AVC/OSC is powered by the SAXX power source, and enables precise control of arc length and electrode positioning for multi-pass welding applications. The motorized AVC system maintains a constant electrode-to-tube distance, while oscillation provides uniform bead distribution across thicker wall sections up to 0.5” ( 12.7 mm). Its compact open head design, combined with a 200 A liquid cooled system, ensures reliable performance in confined spaces and continuous production environments.

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TECHNICAL FEATURES (liquid cooled)
Description SATO-115 with AVC/OSC system SATO-115 with AVC/OSC system
Motor STRAIGHT MOTOR ANGLED MOTOR
Part No. SATO-115E51 SATO-115E52
Diameter range 0.75 – 4.5″ / 19 – 115 mm 0.75 – 4.5″ / 19 – 115 mm
100% duty cycle 200 A 200 A
Electrode diameter 1/16″ or 3/32″ / 1.6 or 2.4 mm 1/16″ or 3/32″ / 1.6 or 2.4 mm
Cooling system Yes Yes
Max operating temperature 40 °C / 104 °F 40 °C / 104 °F
Unit weight 22 lbs / 10.6 kg 22 lbs / 10.6 kg
  • Designed for orbital TIG welding on tube diameters from 19 to 115 mm
  • Integrated AVC system maintains constant arc voltage and electrode distance
  • Oscillation function enables multi-pass welding on thicker wall tubes up to 12.7 mm
  • Supports both fusion welding and filler wire applications
  • Liquid cooled system delivers 200 A at 100 percent duty cycle
  • Motorized axial sweep allows precise electrode positioning up to +/- 10 mm
  • Small rotation sweep enables welding in restricted access areas
  • Quick symmetrical clamping system improves setup speed and repeatability
  • Adjustable handle enhances operator control and ergonomics
  • Compatible with SAXX power source for advanced orbital welding performance

Multi-pass welding with motorized axial sweep (OSC), enabling electrode axial movement of ±10 mm (0.39”).

Constant electrode-to-tube distance with motorized setting and control (AVC), regulating arc voltage and maintaining the distance between the electrode and the tube.

Adjustable handle.

AVC/OSC system enables welding of tubes and pipes with wall thicknesses up to 12.7 mm (0.500”).

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AXXAIR Orbital TIG welding machines: SATO open heads

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