ABB 3HAC021724-001 / 3HAC029030-008 / 3HAC029030-014 – Robotics Wrist Assembly | IRB4400 & IRB4600 Platform
The ABB wrist assembly (P/N: 3HAC021724-001, 3HAC029030-008, 3HAC029030-014) is a precision-engineered end-of-arm mechanical wrist unit designed for ABB’s IRB4400 and IRB4600 industrial robot series. As a critical motion axis component, it governs axes 4, 5, and 6 — enabling the full rotational freedom required in arc welding, material handling, machine tending, and assembly automation cells.
Product Positioning: This wrist assembly is a direct OEM-equivalent replacement part sourced through verified ABB distribution channels. It is the preferred choice for maintenance engineers seeking to restore robot performance to factory specification without full arm replacement.
Complete Technical Specifications
- Part Numbers: 3HAC021724-001 (IRB4400) | 3HAC029030-008 / 3HAC029030-014 (IRB4600)
- Compatible Robots: ABB IRB4400 (all variants) | ABB IRB4600 (all payload variants: 20/40/45/60 kg)
- Component Type: Mechanical Wrist Assembly (Axes 4/5/6)
- Brand / OEM: ABB Robotics
- Series / Platform: IRB4400 Series | IRB4600 Series
- Wrist Type: 3-axis hollow wrist with integrated gear train
- Axis 4 Rotation: ±190°
- Axis 5 Bend: +120° / −120°
- Axis 6 Turn: ±400°
- Repeatability: ±0.07 mm (IRB4400) | ±0.06 mm (IRB4600)
- Wrist Torque (Axis 5): Up to 360 Nm
- IP Rating: IP67 (standard) / IP69K (wash-down option)
- Weight (Assembly): Approx. 200 g (wrist unit only)
- Material: High-strength aluminum alloy housing with hardened steel gear internals
- Controller Compatibility: IRC5 / S4C+
- Lubrication: Pre-lubricated, sealed for life
- Condition: New / Refurbished (specify at inquiry)
Proven Application Environments
- Arc Welding: High-cycle wrist articulation in MIG/TIG welding cells requiring ±0.1 mm TCP repeatability
- Material Handling: Pallet stacking, bin picking, and part transfer in automotive and logistics lines
- Machine Tending: CNC loading/unloading with tight positional tolerances and high duty cycles
- Assembly Automation: Electronics and mechanical sub-assembly with multi-axis coordinated motion
- Foundry / Harsh Environments: IP67-rated sealing suitable for coolant, dust, and chip exposure
Engineering Advantages
- OEM Dimensional Accuracy: Bolt-pattern and flange interface match ABB factory drawings — zero shimming or adaptation required
- Gear Train Integrity: Precision-lapped hypoid gears maintain backlash within ABB specification (<0.1°)
- Sealed Bearing Cartridges: Pre-loaded angular contact bearings eliminate field adjustment and extend MTBF
- Drop-in Replacement: Compatible with existing cable harness routing and tool flange (ISO 9409-1-A-125)
- Reduced Downtime: Swap-and-calibrate procedure typically completed within 4 hours by a qualified technician
System Architecture & Signal Flow
The wrist assembly interfaces with the robot forearm via a precision spigot and 8× M8 bolt circle. Internal gear stages transmit torque from axes 4/5/6 servo motors (mounted in the upper arm) through hollow shafts, allowing full cable and hose routing through the wrist center. The tool flange (Axis 6 output) conforms to ISO 9409-1-A-125, accepting standard gripper, welding torch, and sensor mounts without adapter plates.
Signal path: IRC5 controller → servo drive module → motor resolver feedback → wrist gear train → tool flange output. Calibration is performed via ABB RobotStudio or teach pendant using the standard axis calibration routine (CalPendulum or fine calibration).
Sourcing & Quality Verification
- Source: Authorized ABB spare parts distribution network and certified secondary market
- Inspection: Each unit undergoes dimensional inspection, gear backlash measurement, and bearing pre-load verification before shipment
- Documentation: ABB part label, serial number traceability, and test report available on request
- Warranty: 90-day functional warranty against manufacturing defects (new units); 30-day warranty (refurbished)
- Packaging: Anti-static foam-lined export carton with desiccant; flange faces protected with PE caps
Procurement Process
- Submit your robot serial number and current part number via email or WhatsApp for compatibility confirmation
- Receive a formal quotation with lead time and shipping options within 24 business hours
- Payment via T/T, PayPal, or trade assurance; proforma invoice issued upon order confirmation
- Shipment via DHL / FedEx Express (3–5 days) or sea freight for bulk orders
- Post-delivery technical support available for installation and calibration guidance
Technical FAQ
Q: Is 3HAC029030-008 interchangeable with 3HAC029030-014?
A: These are revision variants of the same wrist assembly for the IRB4600 platform. In most cases they are mechanically interchangeable, but confirm your robot’s serial number range with us before ordering to ensure the correct revision.
Q: Does this wrist require recalibration after replacement?
A: Yes. ABB requires a full axis 4/5/6 calibration after any wrist replacement. This is performed via the teach pendant or RobotStudio using the standard fine calibration procedure.
Q: Can this wrist be used on IRB4600-60/2.05?
A: Yes, the IRB4600-60/2.05 uses the same wrist assembly as other IRB4600 variants. Confirm with part number 3HAC029030-008 or -014.
Q: What lubricant is used in the wrist gearbox?
A: ABB specifies Mobilgrease XHP 222 or equivalent for wrist gear lubrication. New units are pre-filled and sealed; refurbished units are re-lubricated to ABB specification.
Q: Do you provide installation support?
A: Yes. Konmask provides remote technical support via video call for installation and calibration. On-site service can be arranged in select regions.
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