ESAB Linde Oscillator Assembly is a compact unit for use with SIGMA torches to impart oscillatory motion to the electrode within limitations of stroke and amplitude, to meet the requirements of a wide range of welding conditions. The unit is not restricted to welding applications and may be applied to other services where such type of motion is required. This unit is designed to lineally oscillate a load of approximately 12 pounds at frequencies of 35 to 240 cycles per minute, with stepless running adjustment within this range, and with running amplitude adjustment of from 0 to 3/4-in. The type of movement within this amplitude is uniform for 90° of the stroke in either direction with 90° dwell at each extreme of the stroke.