FANUC ARC Mate 120iD 25kg Payload 1831mm Reach Hollow Wrist Welding Robot 0.02mm

FANUC ARC Mate 120iD 25kg Payload 1831mm Reach Hollow Wrist Welding Robot 0.02mm

Overview

The FANUC ARC Mate 120iD is a six-axis arc welding robot designed for thick plate and heavy assemblies where the torch package itself is substantial. A 25 kg payload at the wrist covers a heavy water-cooled torch, a large wire feeder and a collision sensor at the same time, and the 1831 mm reach lets the arm work across a fabricated frame without moving the fixture. Repeatability of 0.02 mm keeps the contact-tip distance stable through long, thick-section seams, which is where weld quality is usually lost first.

The hollow wrist carries the torch cable and hose inside the arm, so the wrist rotates freely inside deep box sections instead of dragging an external cable loop. High wrist moment and inertia ratings accept a heavier torch neck than a light handling arm would allow. The robot is supplied with the R-30iB Plus controller, integrated upper-arm signals and an integrated air supply, which reduces the wiring and pneumatic work needed at commissioning.

Each unit is checked before dispatch: torch TCP is verified, the wrist seal is tested, and a sample weld is run where customer material is supplied. Our engineers have commissioned ARC Mate arms in structural steel, construction equipment and pressure vessel shops, and can advise on positioner sizing, fume extraction, torch cleaning and guarding to meet CE or ANSI requirements.

In daily production the ARC Mate 120iD arc welding robot is typically paired with a two-station positioner so the operator loads one side while the 1831 mm reach works the other. Torch consumables follow a fixed schedule, the hollow wrist seal is inspected each quarter, and the 0.02 mm repeatability can be re-verified with a TCP test after any collision. Because the 25 kg payload matches common heavy welding packages, torch necks, liners and feeders are easy to source, and the R-30iB Plus controller keeps spare-part and software support straightforward over a long service life.

Key Specifications

Key Advantages

• A 25 kg wrist payload carries a heavy water-cooled torch, large wire feeder and collision sensor without derating the arm.
• The 1831 mm reach welds thick, bulky assemblies that would otherwise need a positioner or a second re-clamp.
• Repeatability of 0.02 mm holds torch angle and contact-tip distance through long, thick-section seams.
• The hollow wrist routes the torch bundle inside the arm, so the wrist rotates freely in deep box sections without cable snag.
• High wrist moment and inertia ratings accept a heavy torch neck and air-cooled or water-cooled packages.
• R-30iB Plus control with integrated upper-arm signals and air supply shortens torch changeover and cell commissioning.

Typical Applications

• Heavy structural steel and thick plate fabrication
• Construction machinery booms, arms and frames
• Truck chassis, axles and suspension components
• Pressure vessels, tanks and process skids
• Shipyard blocks and offshore structural modules
• Rail vehicle underframes and bogie assemblies

Frequently Asked Questions

Q: What payload does the ARC Mate 120iD carry?
A: The rated payload at the wrist is 25 kg, enough for a heavy water-cooled torch, large wire feeder, collision sensor and bracket.

Q: How much reach does the 1831 mm arm provide?
A: The 1831 mm reach lets the robot weld large, heavy assemblies in one setup, so a positioner or a second re-clamp is often unnecessary.

Q: What does 0.02 mm repeatability mean for thick plate work?
A: The arm returns to the taught point within 0.02 mm, so torch angle and contact-tip distance stay constant and penetration remains even along long seams.

Q: Why choose a hollow wrist for arc welding?
A: The torch cable and hose run inside the arm instead of looping outside it, which allows free wrist rotation in deep sections and extends cable life.

Q: Which controller is supplied?
A: The R-30iB Plus controller is standard, with integrated upper-arm signals and air supply to simplify torch changeover and cell wiring.

Q: What protection and power does the robot need?
A: The body is rated IP54 and the wrist IP67, and the robot runs on a 380-575 V three-phase supply at 50 or 60 Hz.

Q: What is included with the unit?
A: Manipulator, R-30iB Plus controller, connecting cables, documentation and a test report. Torch, feeder and positioner are quoted to suit the process.

Q: How is the robot shipped and supported?
A: It ships in an export wooden crate with shock absorbing packing. We provide commissioning guidance, spare parts and remote diagnostics.

For a heavy fabrication cell, the 25 kg payload, 1831 mm reach and hollow wrist of the ARC Mate 120iD are usually specified together, because the welding package has to fit at full extension rather than only near the base. Buyers comparing arc welding robots at this payload should confirm torch weight, feeder size and wrist moment together, and we will size the package accordingly before shipment. If a 25 kg payload arc welding robot is being compared with a smaller ARC Mate model, reach, wrist moment and torch weight are the deciding factors, and for most thick-plate cells the ARC Mate 120iD arc welding robot is the better fit.