12kg Payload 1442mm Reach Arc Welding Robot Arm with IP67 Hollow Wrist

12kg Payload 1442mm Reach Arc Welding Robot Arm with IP67 Hollow Wrist

This 12kg payload 1442mm reach arc welding robot arm is a six-axis machine built around a hollow wrist developed specifically for gas metal arc welding. The 1442 mm maximum reach, 12 kg rated payload and 0.04 mm pose repeatability let a single arm cover a welding fixture, a positioner station and a touch-up bench from one floor plate.

The HW version routes the torch, wire feed hose and shielding gas line through the arm and out through the wrist, so the cable package no longer swings at the end of the torch. That internal routing is also why the wrist carries IP67 protection while the arm body is rated IP54 against spatter, metal dust and grinding residue in a production welding cell.

Axis speeds of 260, 240 and 260 degrees per second on axes one to three, and 430, 480 and 720 degrees per second on the wrist, keep the torch in the seam while a positioner rotates the workpiece. The arm weighs about 201 kg on a 420 by 363 mm footprint, so it mounts on a standard welding frame without a special foundation, and it can be installed on the floor, wall, ceiling or at an inclined angle for gantry integration.

In a production cell this arc welding robot arm is normally paired with a servo positioner, a torch cleaning station and fume extraction, and the 1442 mm reach serves all three from one base position. Because the hollow wrist keeps the torch cable inside the arm, the arc welding robot arm reaches into box sections and corners where an external cable package would rub against the workpiece. The same hollow wrist shortens torch changeover, and the arc welding robot arm can be re-taught for a new weldment within a single shift.

Key Specifications

Advantages of This Arc Welding Robot Arm

• 1442mm working reach: one mounting point covers the fixture, the positioner and a rework station, cutting the number of positioner indexes per part.
• 12kg rated payload: carries a water-cooled torch, wire feeder, collision sensor and anti-spatter air blast without derating the motion.
• Hollow wrist torch routing: torch, wire and gas lines run inside the arm, so cable wear and snagging on fixtures disappear.
• IP67 wrist and IP54 arm: spatter, coolant and grinding dust stay out of the wrist joint where welding duty is hardest.
• 0.04mm pose repeatability: the torch returns to the same seam position every cycle, holding penetration and bead width stable.
• Fast wrist axes: 430, 480 and 720 degrees per second allow weave, stitch and reposition moves inside the arc-on time budget.
• Every mounting position: floor, wall, ceiling and inclined installation suit welding tables, gantries and inverted cells.
• KR C5 controller family: supports seam tracking, fieldbus integration and offline programming through standard KUKA software.

Applications

• GMAW and MAG welding of steel, stainless steel and aluminium frames
• Automotive sub-assembly welding on positioner based cells
• Sheet metal cabinet, enclosure and panel welding
• Furniture and shelving frame welding with stitch patterns
• Construction machinery brackets and small structural weldments
• Ceiling or gantry mounted welding over long fixtures
• Welding plus rework and touch-up in the same cell
• Job shop production with frequent part changeover

FAQ

Q: What does the hollow wrist bring to this arc welding robot arm?

A: The hollow wrist lets the torch, wire conduit and gas hose pass through the centre of the wrist instead of hanging outside it. Cable flexing is reduced, the torch reaches into box sections and corners more freely, and the wrist can be sealed to IP67 because there is no external cable opening.

Q: Is 12kg payload enough for a welding torch package?

A: Yes for most GMAW packages. A water-cooled torch with collision sensor, air blast and wire feeder connection typically weighs 6 to 9 kg, leaving margin for the rated 12 kg. The maximum payload of 21.1 kg applies only at zero centre of mass offset and must be verified with KUKA.Load.

Q: How is 0.04mm repeatability measured?

A: Pose repeatability follows ISO 9283 and is verified at the factory. In a welding cell it means the torch tip returns to the taught seam position within 0.04 mm, which keeps penetration depth and bead width consistent between cycles.

Q: What protection rating does the arm have?

A: IP54 for the arm body and IP67 for the wrist, rated to IEC 60529. The wrist rating is the part that matters in welding service because it faces spatter, coolant mist and metal dust directly.

Q: Which controller and software are used?

A: The KR C5 S6 or S7 controller, or the compact KR C5 slim-2 S6. KUKA ready-to-use packages cover seam tracking, touch sensing, weave patterns and fieldbus connection, and offline programs can be prepared outside the cell.

Q: How is the arm mounted in a welding cell?

A: On a floor plate, a welding table frame, a wall bracket, a ceiling frame or at an inclined angle. The 420 by 363 mm footprint and 201 kg weight are normally handled by a standard fabricated steel base without a concrete foundation.

Q: Can this arc welding robot arm weld aluminium and stainless steel?

A: Yes. With the correct synergic power source program and torch consumables, the arc welding robot arm handles steel, stainless steel and aluminium. The hollow wrist helps on aluminium because the wire conduit stays short and straight, which reduces wire feed friction and bird nesting.

Q: What are the delivery and support terms?

A: Minimum order one piece, stock units in 3 working days and configured welding cells in 15 to 25 days. FOB or CIF terms, calibration report, NRTL, CE and CR documentation, plus 12 months of parts and technical support.

Q: How do I request a quotation?

A: Send your weldment drawing, seam length, wire and gas details, positioner layout and plant voltage. Our engineers confirm reach and payload margin, propose torch, seam tracking and safety packages, and return a price, lead time and cell layout drawing for this 1442 mm reach arc welding robot arm.