Adding a cantilever travel axis to the 7-axis design extends the effective working range to about 3.5 m and enables butt joints on square tube/channel steel and channel lap joints in addition to fillet welds, suiting bridge deck units and ship sub-assemblies.
The 8-axis cantilever welding robot adds a traverse axis on the cantilever beam of the 7-axis design: the robot mounting point can move laterally along the beam, and combined with longitudinal rail travel it forms a large working envelope in both directions.
Compared with the 7-axis model it covers a much larger area without frequently moving or turning the workpiece, making it especially suitable for large plate assemblies, ship sections and large construction-machinery components. It carries the teach-free welding system and vision sensor for automatic seam finding and autonomous decisions on welding parameters and paths.
| Model | CR8-12m (standard 8-axis cantilever) |
| Configuration | Column cantilever + cantilever travel axis + suspended six-axis robot + rail travel axis |
| Axes | 8 (six-axis body + cantilever travel + rail travel) |
| Cantilever System Model | CALF-XB1200 (single cantilever) |
| Rail Length | 12 m (X axis) |
| Effective Cantilever Range | approx. 3.5 m |
| Cantilever Weight | 4.5 t |
| Max Travel Speed | 0.6 m/s |
| Additional Axes | 2 (rail travel + cantilever travel) |
| Cantilever Drive | 380 V / 2 kW servo motor + 2 kW drive |
| Welding Robot | CALF10W-2050 six-axis body |
| Control System | Nabot EtherCAT servo drive |
| Welding Power Source | AOTAI NBC-500RP PLUS digital pulse |
| Torch | Mino W500 water-cooled extended torch + water tank |
| Torch Cleaning Station | Mino TCS2000 |
| Vision System | Weijing line-and-area 3D composite sensor |
| Positioning Accuracy | ±0.05 mm |
| Welding Software | Dauphin teach-free software (steel structure edition) |
| Materials | Carbon steel, low-alloy steel, stainless steel (non-mirror), aluminium alloy (non-mirror) |
| Welding Process | Gas-shielded welding (mixed gas / CO2) |
| Welding Positions | PB horizontal-vertical, PF vertical-up, PG vertical-down |
| Suitable Workpieces | H-section columns, roof beams, crane girders and other steel structures |
| Operating Environment | Temperature -10~45°C, humidity 20~80% |
| Warranty | 12 months overall, 24 months for the robot body |