ABB 3HAC039109-004 – Cable Unit Ax. 4-6 | IRB 4600 / IRB 2600 Robot Platform
The ABB 3HAC039109-004 is the OEM-specified Cable Unit for Axes 4–6 on ABB’s IRB 4600 and IRB 2600 series industrial robots. This harness assembly routes power and signal through the upper arm and wrist, directly enabling the precision motion of the robot’s final three axes. Procurement engineers sourcing replacement or spare cable units for ABB robot cells will find this listing covers the primary part number and its cross-referenced variants.
Cross-reference / Supersession: 3HAC039109-002 | 3HAC039109-003 | 3HAC039109-004 (IRB 2600 variant: IRB26003HAC039109-004)
Complete Technical Specifications
| OEM Part Number | 3HAC039109-004 |
| Cross-Reference | 3HAC039109-002 / 3HAC039109-003 |
| Description | Cable Unit, Axes 4–6 |
| Compatible Robots | ABB IRB 4600 (all variants), ABB IRB 2600 (all variants) |
| Axis Coverage | Axis 4, Axis 5, Axis 6 (upper arm / wrist) |
| Cable Type | Integrated power + signal harness assembly |
| Manufacturer | ABB Robotics (OEM) |
| Platform Series | IRB 4600 / IRB 2600 |
| Country of Origin | Sweden / China (ABB manufacturing) |
| Condition | New OEM / Refurbished (specify on inquiry) |
| Weight (approx.) | 100 g |
| HS Code | 8544.42 (insulated electric conductors, robot harness) |
Proven Application Environments
- Automotive body-in-white welding cells – IRB 4600 robots performing spot and arc welding where Ax. 4–6 cable integrity is critical to torch positioning accuracy
- Material handling & palletizing – IRB 2600 installations requiring reliable signal continuity through high-cycle wrist articulation
- Machine tending & assembly – Precision pick-and-place applications where cable fatigue from repetitive wrist motion demands OEM-grade replacement parts
- Painting & surface treatment – Environments with chemical exposure where cable sheathing integrity is non-negotiable
- Preventive maintenance programs – Scheduled cable replacement at defined cycle-count intervals to prevent unplanned downtime
Engineering Advantages
- OEM-matched routing geometry – Designed to ABB’s exact cable path specifications; no field modification required
- Plug-and-play connector compatibility – Mates directly with IRB 4600 / IRB 2600 upper arm connectors; no adapter harnesses needed
- Flex-rated conductors – Engineered for millions of articulation cycles across the full wrist range of motion
- Shielded signal pairs – Maintains resolver and encoder signal integrity in electrically noisy industrial environments
- Cross-variant coverage – Single part number (3HAC039109-004) covers multiple IRB 4600 payload/reach configurations
System Architecture & Signal Flow
In the ABB IRB 4600 / IRB 2600 kinematic chain, the Cable Unit Ax. 4–6 originates at the upper arm junction (post-Axis 3 gearbox) and terminates at the wrist flange. It carries:
- Motor power conductors for Axis 4, 5, and 6 servo drives
- Resolver / encoder feedback cables returning position data to the IRC5 / IRC5 Compact controller
- Brake release wiring for axes with holding brakes
Proper installation requires routing through the upper arm cable guide channels per ABB Product Manual (3HAC028284-001 or applicable revision). Torque specifications for connector retention must be observed to prevent intermittent faults.
Sourcing & Quality Verification
- All units are sourced through verified ABB authorized distribution channels or directly from ABB Robotics spare parts inventory
- Each shipment includes part number label verification against 3HAC039109-004 (or cross-reference)
- Refurbished units (where applicable) are tested for continuity, insulation resistance, and connector integrity prior to dispatch
- Packaging inspection and photographic documentation available on request for quality-critical procurement
- Certificate of Conformance (CoC) available for regulated industries
Procurement Process
- Confirm compatibility – Provide your robot serial number or IRB model/variant; we verify the correct part revision
- Request a quote – Contact support@konmask.com or use the on-page inquiry form for volume pricing and lead time
- Order confirmation – Purchase order accepted; proforma invoice issued within 1 business day
- Shipping – DHL / FedEx express international; EXW Xiamen or CIF destination available; typical lead time 3–7 business days
- After-sales support – Installation guidance and ABB documentation references provided post-delivery
Technical FAQ
Q: Is 3HAC039109-004 compatible with both IRB 4600 and IRB 2600?
A: Yes. The cable unit is shared across both platforms. Confirm your robot’s upper arm configuration with your serial number if uncertain.
Q: What is the difference between 3HAC039109-002, -003, and -004?
A: These are revision/variant suffixes within the same cable unit family. -004 is the current active revision and supersedes earlier suffixes in most applications. Contact us to confirm the correct revision for your robot’s manufacturing date.
Q: Can this cable unit be repaired rather than replaced?
A: ABB recommends full replacement for Ax. 4–6 cable units due to the integrated harness construction. Field repair of individual conductors is not supported by ABB and may void robot warranty.
Q: Do you supply the full cable set (Ax. 1–6)?
A: Yes. Contact us for bundled cable set pricing covering all axes for a complete preventive maintenance overhaul.
Q: What controller is this cable unit compatible with?
A: The IRB 4600 and IRB 2600 use the IRC5 or IRC5 Compact controller. This cable unit is compatible with all IRC5-generation controller pairings for these robot models.
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