8kg Payload 1441mm Reach ESD-Safe Arc Welding Robot Arm with IP65 Hollow Wrist

8kg Payload 1441mm Reach ESD-Safe Arc Welding Robot Arm with IP65 Hollow Wrist

This 8kg payload 1441mm reach ESD-safe arc welding robot arm is a six-axis machine from the KR CYBERTECH nano arc family, sized for compact welding cells where a 12 kg arm is more machine than the fixture needs. A rated payload of 8 kg, a maximum reach of 1441 mm and 0.04 mm pose repeatability cover brackets, frames and small weldments from a single floor plate.

Because the moving mass is lower than the 12 kg class, the arm accelerates and reverses faster: 230 degrees per second on the first three axes and 430 to 630 degrees per second on the wrist. That matters in short-seam work where the torch spends more time repositioning than arcing, and it lets a single arc welding robot arm serve a two-station positioner without waiting.

The hollow wrist routes torch, wire conduit and shielding gas inside the arm and releases them at the wrist centre, so the cable package no longer hangs at the torch. That internal route allows a sealed wrist rated IP65 while the arm body is IP54, and it keeps the torch able to enter box sections, corners and narrow frames without cable rub.

ESD compliance to IEC 61340-5-1 and ANSI/ESD S20.20 is part of the specification, which matters when the same cell also handles electronics enclosures or coated parts. In production this arc welding robot arm is usually paired with a compact positioner, a torch cleaning station and fume extraction, and the hollow wrist keeps the torch cable clear of fixtures so the arc welding robot arm can weld a full batch without a cable-related stop.

Key Specifications

Advantages of This Arc Welding Robot Arm

• 1441mm reach in an 8kg class arm: covers a fixture plus a compact positioner without an oversized robot on the cell.
• Lower moving mass: 195 kg arm weight and 8 kg payload give faster acceleration and shorter air-cut time than the 12 kg class.
• IP65 hollow wrist: sealed wrist with internal torch, wire and gas routing keeps spatter and dust out of the joint.
• ESD compliance: IEC 61340-5-1 and ANSI/ESD S20.20 requirements met for cells that also handle electronic assemblies.
• 0.04mm pose repeatability: keeps the torch on the seam cycle after cycle, holding penetration and bead width stable.
• Fast wrist axes: 430, 430 and 630 degrees per second support weave, stitch and torch reorientation inside the arc-on budget.
• Compact footprint: 420 by 363 mm base plate fits a standard welding table frame, floor or ceiling mounted.
• KR C5 controller family: seam tracking, touch sensing and fieldbus packages integrate through standard KUKA software.

Applications

• GMAW and MAG welding of steel, stainless steel and thin-walled aluminium
• Sheet metal enclosure, cabinet and chassis welding
• Automotive bracket and small sub-assembly welding
• Furniture, shelving and rack frame welding
• Welding cells handling electronics enclosures with ESD requirements
• Fixture and jig build welding in tool rooms
• Two-station positioner cells with short seams
• Touch-up and rework welding beside a manual bench

FAQ

Q: What makes this arc welding robot arm different from the 12kg version?

A: Payload and inertia. The 8 kg arm weighs about 195 kg instead of 201 kg, so it accelerates and reverses faster on short seams, and its wrist is IP65 rather than IP67. For brackets, frames and thin sheet where the torch package stays under 8 kg, the lighter arm usually wins on cycle time.

Q: Why does ESD compliance matter on a welding robot?

A: Many cells weld frames that later hold electronics, or share space with ESD-protected assembly. Compliance with IEC 61340-5-1 and ANSI/ESD S20.20 means the arc welding robot arm does not introduce a static discharge risk to those parts.

Q: How does the hollow wrist improve welding quality?

A: Torch, wire conduit and gas hose run through the wrist centre, so the cable package does not pull on the torch as the arm changes attitude. Wire feed stays consistent, gas coverage is stable, and the wrist can be sealed to IP65 against spatter and grinding dust.

Q: What is the protection rating of the arm and wrist?

A: IP54 for the arm body and IP65 for the wrist, rated to IEC 60529. The wrist rating is the one that matters in welding service because spatter and dust reach the wrist first.

Q: Which controller and welding packages are used?

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

Q: Can the arm be mounted on a ceiling frame?

A: Yes. Floor and ceiling mounting are both supported. Ceiling mounting is common on compact two-station cells because it keeps the floor clear and shortens the approach to the fixture.

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, factory calibration report, NRTL, CE and CR documentation, plus 12 months of parts and remote 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 with KUKA Load, propose torch, seam tracking and safety packages, and return a price, lead time and cell layout drawing for this 1441 mm reach arc welding robot arm.