RedHead Series Orbital Weldhead
Redheads are designed to make pipe-to-pipe and pipe-to-fitting welds with precision and repeatability. Redheads can be used for fusion welding, or with filler wire addition – an integral head mounted feeder is standard on all models.
Three models cover the size range of 12.7 to 168 mm (0.5 to 6.625”) OD. Digital technology forever eliminates the need for periodic calibration – rotation and wire speed remain accurate regardless of wear, and heads can be interchanged without time-consuming recalibration.
Uniform torch rotation is ensured by a chain and sprocket drive using a precision stainless steel bearing assembly that is immune to heat.
Description
Options
- Extension Cables
- Fillet/Socket Weld Kit
- Extended Clamping Range Kit R-2 allows welding down to 21mm (0.84 inch) OD
- Extended Clamping Range Kit R-3 allows welding down to 50 mm (2 inch) OD
Specifications
| R-1 (MODEL 427A) R-2 | R-2 (MODEL 428A) | R-3 (MODEL 429A) | |
|---|---|---|---|
| Application | Orbital GTAW welding of pipe-to-pipe, pipe-to-fittings | ||
| Pipe (tube) OD size range | 13 – 38 mm (0.5 – 1.5”) | 33 – 90 mm (1.315 – 3.5”) | 90 – 168 mm (3.5 – 6.625”) |
| Filler wire module CE standards adopted | Wire size: 0.8 mm (0.03”) Max. speed capability: 1900 mm/min. (75 IPM) Spool size: 0.16 kg (0.35 lbs) | ||
| Arc gap control module | Mechanical, adjustable | ||
| Torch propulsion module | 0 – 4.0 rpm | 0–1.5 rpm | 0–0.6 rpm |
| Water-cooled torch | 200 A continuous | ||
| Torch adjustment capability | Torch lead/lag adjustment: ± 15 degrees (manual) Torch tilt adjustment: Requires optional socket weld kit | ||
| Cable length | 7.6 m (25’) standard. Extension cables available. | ||
| Power supply compatibility | Tubemaster 514, Pipemaster 515, Pipemaster 516 | ||
 | |||
| Dimensions/weights | R-1 (MODEL 427A) R-2 | R-2 (MODEL 428A) | R-3 (MODEL 429A) |
| Weight | 3.9 kg (8.5 lbs.) | 5.4 kg (12 lbs.) | 9.0 kg (20 lbs.) |
| Axial Clearance (Torch C/L to Rear Extremity) (A) | 127mm (5.0”) | 10mm (0.41”) | 127mm (5.0”) |
| Axial Clearance (Torch C/L to Front Extremity) (B) | 10mm (0.41”) | 10mm (0.41”) | 10mm (0.41”) |
| Width (C) | 140mm (5.5”) | 191mm (7.5”) | 280mm (11.0”) |
| Radial Clearance Requirement (D) | [140mm (5.5”) – Pipe O.D.] ÷ 2 = Radial Clearance | [191mm (7.5”) – Pipe O.D.] ÷ 2 = Radial Clearance | [280mm (11”) – Pipe O.D.] ÷ 2 = Radial Clearance |
