Used Welding Robots for Sale 54

Welding robot applications

Welding robot applications span automotive body welding (the original and still largest application globally), structural steel fabrication, agricultural equipment manufacturing, construction equipment production, shipbuilding, and general industrial fabrication wherever production volumes justify automation.

Arc welding (MIG/MAG, TIG) represents the dominant welding robot application by installation count. The robot positions the welding torch along programmed paths while the welding power source delivers controlled current and wire feed. Complete arc welding cells integrate the robot with welding power source (Fronius, Lincoln, Miller, EWM, or similar), wire feeder, torch with through-arm cabling, and fume extraction.

Spot welding dominates automotive body assembly. The robot positions a spot welding gun (with integrated transformer for resistance welding) at programmed locations on the body structure to create spot welds. Modern automotive plants use 100-300+ spot welding robots in body shop areas. Servo-electric spot welding guns have replaced earlier pneumatic systems on premium installations.

Laser welding has grown as fibre laser power has become economic for industrial welding applications. Laser welding provides higher welding speeds, narrower welds, and lower heat input than arc welding alternatives. Robotic laser welding addresses high-precision welding applications and replaces arc welding in selected automotive applications.

Through-arm cable routing

Through-arm cable routing on welding robots protects welding cables and extends their service life. Wire feed routing through the robot arm eliminates external cable tracks that complicate fixturing and tooling design. The through-arm routing is essentially standard on modern welding-prepared robots.

Welding-specific robot configurations include customised wrist designs that improve torch access in difficult welding positions, integrated welding power source connectivity (eliminating separate cable runs to the controller), and welding-specific software platforms (Fanuc TPP welding, Yaskawa welding software, ABB RobotWare arc welding, Kuka ArcTech).

Welding power source compatibility

Welding power source compatibility matters for buyers integrating used welding robots into existing welding shops. Different power source brands have different controller interfaces — matching the welding robot to your existing welding power source standards reduces integration complexity. Modern robots typically interface with multiple power source brands through standardised digital interfaces.

Seam tracking and weld quality

Weaving and seam tracking capabilities improve welding quality. Through-arc seam tracking uses welding current variations to track joint position. Touch sensing finds workpiece position before welding starts. Laser seam tracking provides high-accuracy position monitoring during welding for premium applications.

Fume extraction and ventilation infrastructure represents significant additional installation requirements. Welding generates fumes that require capture and treatment for occupational safety compliance.

Major manufacturers

Leading welding robot manufacturers and their welding-specific platforms include Fanuc (Arc Mate 100/120/200 series, particularly dominant in automotive welding), Yaskawa Motoman (MA, MH, and AR series for welding, including the dedicated welding controller integration), ABB (IRB 1410, 1520, 2600 with welding configuration), Kuka (KR 6, 16, 30 with welding), Panasonic (G3, TM/TS series welding-specialist robots), and OTC Daihen (FD, BX welding-specialist robots). Used Fanuc and Yaskawa welding robots dominate the secondary market through automotive supplier installations.

Browse used welding robots on Exapro to compare arc welding, spot welding, and laser welding configurations from verified sellers worldwide. When evaluating used welding robots, verify axis repeatability and welding path accuracy, check welding power source condition if included with the robot, inspect through-arm cable harness integrity, test welding cell function with representative test welds, confirm safety system function including welding cell enclosures and arc flash protection, and verify that welding configuration, controller, and power source match your existing welding standards and intended applications.