Gullco GK-R-300 KAT 300 Welding Carriage with Radial Oscillation
A track-mounted carriage with radial weld oscillation
The Gullco GK-R-300 is a KAT® 300 welding carriage combined with a radial weld oscillation head. The carriage runs on track and moves a welding gun or torch along the joint at a controlled speed, forward or reverse, so that travel speed and torch position stay the same from the start of a weld to its end. Gullco describes the KAT 300 as a re-engineered version of its KAT weld oscillation carriage, smaller and lighter than previous models.
The radial oscillator swings the torch through an oscillation width adjustable from 0.8 to 45°, at a speed of 1–45° per second. Dwell can be set independently at each end and at the centre of the stroke, infinitely variable from 0 to 5 seconds, and the oscillator control provides an Auto Arc Start function.
Carriage, track and torch positioning
Heavy-duty quick-action self-aligning wheels and two paddle locks mount the carriage on the track and keep it correctly seated. A quick clutch mechanism, a machined dovetail racking system with a locking rack box, and a torch holder with position memory allow tool-less setup and let the operator remove the torch for cleaning and return it to the same position.
Travel speed is controlled by a 24 V Gullco microprocessor with conformal-coated, ingress-protected circuit boards. The control has a forward, stop and reverse switch, high-speed return, an infinitely variable multi-turn speed potentiometer and an LED display. The carriage is compatible with existing Gullco rigid track and with the semi-rigid track, made from extruded aluminium with a fixed steel rack, which can be formed for curved surfaces down to a minimum diameter of 24 ft (7,315 mm), inside or outside.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / model | Gullco / GK-R-300, KAT® 300 with radial weld oscillation |
| Carriage weight | 7.7 kg (17 lb) |
| Racking weight | 4 kg (9 lb) |
| Travel speed | 2.5–83.1 cm/min (1–32.7 in/min) |
| Load capacity | 25.4 kg (56 lb), regardless of weld position |
| Oscillation width | 0.8–45° |
| Oscillation speed | 1–45° per second |
| Dwell | Independent at each end and centre, 0–5 s |
| Control | 24 V microprocessor speed control, LED display, Auto Arc Start |
| Power supply | 42 VAC, 115 VAC or 230 VAC models |
| Track | Gullco rigid track or semi-rigid track; semi-rigid minimum forming diameter 7,315 mm (24 ft), ID or OD |
Selecting the configuration
The supply voltage is part of the order: Gullco lists 42 VAC, 115 VAC and 230 VAC models. The KAT 300 is also built with a linear oscillation head, the GK-L-300, which has a 1.5 in stroke and 8 to 188 cycles per minute; compare the two heads against the welding procedure before ordering.
Track length and track type, mounting devices such as magnets or vacuum mounts, and the gun or torch holder are separate Gullco accessories and should be listed with the carriage. Gullco states that the KAT is compatible with all welding power sources and wire feeders, but the gun, cable lengths and arc signal connection still need to be confirmed for the equipment on site. For pipe girth welding, Gullco offers a separate KAT 300-PW pipe welding version.
Documents and quotation
The Gullco KAT 300 brochure, which covers the GK-R-300 and the other KAT 300 options is available on this page. Browse Welding Robots & Automation for related mechanised welding equipment.
For a quotation, send the item number with the supply voltage, the welding process and joint type, the track type and length, and the mounting devices and torch holder required.
- Brochure Gullco KAT 300 welding and cutting carriage brochure Download
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