Orbital TIG: Orbital Weld Head Specifications

Closed-Chamber Weld Heads

MODEL 238

Tube Dia. Range: 1/4?�? to 2.375?�?
Weight: 8.3 lbs
Current Rating: 250A/60%
Rotational Speed: 0.155 - 10 rpm.
Radial Clearance: 2.4?�? - Dia. / 2
Axial Clearance: 1.45?�?
Max Dimensions: 14" x 2 3/4" x 5 "

Note: Axial clearance on Model 238 may be custom-ordered as small as 0.5"

OTHER MODELS

Model 132 (Tube dia. range: 0.125" - 1.315")
Model 350 (Tube dia. range: 0.375" - 3.5")
Model 450 (Tube dia. range: 0.5" - 4.5")
Model 663 (Tube dia. range: 0.625" - 6.625")

Closed-Chamber Product Information

Open-Arc Weld Heads

AP 140-220

Tube Dia. Range: 5 1/8?�? to 8 5/8?�?
Weight: 33.07 lbs
Current Rating: 250A/100%
Rotational Speed: 0.03 - 0.57 rpm.
Radial Clearance: 5.71?�? - Dia. / 2
Axial Clearance: 4.0?�?
Max Dimensions: 23.5?�? x 5.7?�? x 15.6?�?

AP 71-160

Tube Dia. Range: 2 7/8?�? to 6 1/4?�?
Weight: 25.35 lbs
Current Rating: 250A/100%
Rotational Speed: 0.04 - 0.62 rpm.
Radial Clearance: 3.15?�? - Dia. / 2
Axial Clearance: 4.0?�?
Max Dimensions: 20.9?�? x 5.7?�? x 13.2?�?

AP 36-80

Tube Dia. Range: 1 1/2?�? to 3 1/8?�?
Weight: 9.04 lbs
Current Rating: 250A/100%
Rotational Speed: 0.1 - 1.2 rpm.
Radial Clearance: 2.17?�? - Dia. / 2
Axial Clearance: 3.25?�?
Max Dimensions: 16.3?�? x 4.6?�? x 7.8?�?

AP 18-40

Tube Dia. Range: 3/4?�? to 1 1/2?�?
Weight: 4.85 lbs
Current Rating: 250A/100%
Rotational Speed: 0.15 - 2.3 rpm.
Radial Clearance: 2.17?�? - Dia. / 2
Axial Clearance: 2.5?�?
Max Dimensions: 13.4?�? x 3.7?�? x 4.3?�?

Open-Arc Product Information

Tube-to-Tubesheet Welding

TS 12-90

Tube Dia. Range: 1/2?�? to 3 1/2?�?
Weight: 10.3 lbs
Current Rating: 200A/100%
Rotational Speed: 0.3 - 4.5 rpm.
Wire Feed Speed: 0 - 60 ipm.
Wire Diameters: 0.025 - 0.045
Max Dimensions: 15.5?�? x 3.9?�? x 6.5?�?

Tube-to-Tubesheet Product Information