Operation Manual
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A7 TIG Orbital System 150© Kemppi Oy 2016 1615
OPERATING MANUAL
Electrode lengths for dierent tube OD, 15060 weld head
Tube OD Tube OD electrode diameter
1.0 mm 1.6 mm 2.4 mm
mm inch length [mm] length [mm] length [mm]
50.8 2.000 74.4 73.9 73.4
51.0 2.008 74.3 73.8 73.3
52.0 2.047 73.8 73.3 72.8
53.0 2.087 73.3 72.8 72.3
54.0 2.126 72.8 72.3 71.8
60.3 2.374 69.7 69.1 68.6
63.5 2.500 68.1 67.5 67.0
70.0 2.756 64.8 64.3 63.8
76.1 2.996 61.8 61.2 60.7
76.2 3.000 61.7 61.2 60.7
85.0 3.346 57.3 56.8 56.3
88.9 3.500 55.4 54.8 54.3
101.6 4.000 49.0 48.5 48.0
104.0 4.094 47.8 47.3 46.8
108.0 4.252 45.8 45.3 44.8
114.3 4.500 42.7 42.1 41.6
127.0 5.000 36.3 35.8 35.3
129.0 5.079 35.3 34.8 34.3
139.7 5.500 30.0 29.4 28.9
152.4 6.000 23.6 23.1 22.6
5.1.1 Collets
When ordering collets, it is important to specify the exact OD dimension of the tube or
tting. Because of the wide range of tting manufacturers, it is necessary to specify the
tting manufacturer and type. If possible, include data sheet or drawing dening the
specication for the tting in the order.
Each tting manufacturer has dierent tolerances on the dimensions of the ttings.
Several tting manufacturers have special product lines specically designed for orbital
welding.
Collets for each type of weld head are specied by:
• Weld head model
• Tube/pipe OD
• Flush or extended
The ordering codes in the above list are per pair of collets. One weld head requires two
pairs.