Pendulum mouthpiece welding head for automatic welding in narrow-gap relates to welding equipment, in particular a welding head for automatic submerged arc welding in a narrow-gap and can be used for welding of thick-walled vessels.; Pendulum mouthpiece welding head consists of a flat body comprising a through vertical cylindrical bore for supplying welding wire, two disposed at opposite vertical ends of the housing mouthpiece, horizontal coaxial cylindrical holes for its mounting on axes of swing in the housing of the welding head, a driving element with an oval opening, into which the actuator stem finger vibrational motion of pendulum mouthpiece. In order to increase the service life of the pendulum mouthpiece welding head and improving the quality of welding the driving element is a separate part made of hardenable steel, mounted on the pendulum mouthpiece end of the body by mounting and fixing elements.
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