ABB 3HAB6844-1 / 3HAB5558-1 Balancing Device – IRB 6640 Industrial Robot Series
When a balancing device fails on an ABB IRB 6640 robot, the consequences are immediate and severe: the manipulator arm loses its counterbalance force, placing extreme mechanical stress on the axis-2 gearbox and motor. Production lines halt, unplanned downtime accumulates, and the risk of secondary damage to the robot structure escalates rapidly. In high-throughput automotive, foundry, and heavy-material-handling environments, every hour of downtime translates directly into significant financial loss.
The ABB 3HAB6844-1 (also cross-referenced as 3HAB5558-1 and IRB66403HAC032124-005) is the OEM-specified balancing device engineered exclusively for the ABB IRB 6640 robot family. As one of ABB’s flagship heavy-duty industrial robots—capable of handling payloads up to 235 kg—the IRB 6640 is deployed across thousands of facilities worldwide. This balancing unit is a safety-critical, load-bearing component that maintains axis-2 equilibrium throughout the full range of motion, ensuring precise repeatability and protecting downstream drivetrain components from overload.
Technical Specifications
- Part Numbers: 3HAB6844-1 / 3HAB5558-1 / IRB66403HAC032124-005
- Manufacturer: ABB Robotics
- Compatible Robot Series: ABB IRB 6640
- Component Type: Mechanical Balancing Device (Spring/Gas-assisted counterbalance unit)
- Function: Axis-2 gravitational load compensation
- Weight: Approx. 400 g (unit weight)
- Condition: New / Refurbished / Tested (specify on inquiry)
- Origin: ABB OEM Supply Chain
Key Features & Benefits
- OEM-Grade Precision: Manufactured to ABB’s exact tolerances, ensuring drop-in compatibility with IRB 6640 robot arms without modification.
- Axis-2 Load Compensation: Reduces motor torque demand on axis 2, extending motor and gearbox service life significantly.
- Dual Cross-Reference: Covers multiple ABB part numbers (3HAB6844-1, 3HAB5558-1, IRB66403HAC032124-005), simplifying procurement across different documentation versions.
- Rapid Replacement: Designed for field-serviceable installation, minimizing robot downtime during maintenance windows.
- Tested & Verified: Each unit undergoes functional inspection before dispatch to ensure operational integrity.
Industry & Equipment Applications
- Automotive Manufacturing: Spot welding, body-in-white assembly, and press-tending lines using ABB IRB 6640 robots.
- Foundry & Die Casting: High-temperature part extraction and machine tending in harsh environments.
- Heavy Material Handling: Palletizing, depalletizing, and large-component transfer applications.
- Metal Fabrication: Arc welding and cutting cells requiring high payload and reach.
- General Industrial Automation: Any facility operating ABB IRB 6640 variants (IRB 6640-130/3.2, IRB 6640-180/2.8, IRB 6640-235/2.55, etc.).
System Integration & Compatible Parts
The 3HAB6844-1 balancing device integrates directly into the ABB IRB 6640 robot’s axis-2 mechanical structure. For a complete maintenance or rebuild, consider sourcing the following compatible components:
- ABB IRB 6640 Axis-2 Gearbox (3HAC028845-001)
- ABB IRB 6640 Axis-2 Motor Assembly
- ABB IRB 6640 Wrist Unit
- ABB IRC5 Controller Spare Parts
- ABB RobotWare Software Licenses
Contact our technical team to confirm compatibility with your specific IRB 6640 variant and software version.
Our Quality Assurance Process
- Source Verification: All parts are sourced from authorized ABB distributors or directly decommissioned from operational robots with full traceability.
- Visual & Dimensional Inspection: Each unit is inspected for mechanical integrity, surface condition, and dimensional conformance.
- Functional Testing: Where applicable, balancing devices are tested for spring/gas pressure retention and mechanical travel.
- Secure Packaging: Anti-static, shock-resistant packaging ensures safe international transit.
- Documentation: Test reports and part traceability documents available upon request.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page or email support@konmask.com.
- Provide your robot serial number and IRB 6640 variant for compatibility confirmation.
- Receive a formal quotation with lead time and shipping options within 24 business hours.
- Confirm order and receive proforma invoice for payment processing.
- Part dispatched with tracking; typical international delivery 5–10 business days.
Why Choose Konmask.com?
- Specialized in Industrial Automation: We focus exclusively on PLC, DCS, robot, and automation spare parts—not a generalist marketplace.
- Global B2B Supply: Serving maintenance engineers, MRO procurement teams, and system integrators across 50+ countries.
- Technical Support: Our team includes experienced automation engineers who can assist with part identification and compatibility.
- Fast Quotation: RFQ responses within 24 hours, with competitive pricing for both single units and bulk orders.
- Secure Transactions: T/T, PayPal, and other B2B payment methods supported with full documentation.
Frequently Asked Questions
- Q: Are 3HAB6844-1 and 3HAB5558-1 the same part?
- A: Yes. 3HAB6844-1, 3HAB5558-1, and IRB66403HAC032124-005 are cross-reference part numbers for the same ABB IRB 6640 balancing device. Different ABB documentation versions and regional catalogs may use different numbers.
- Q: Which IRB 6640 variants is this balancing device compatible with?
- A: This unit is designed for the ABB IRB 6640 robot family. Please provide your robot’s serial number and variant (e.g., IRB 6640-180/2.8) when inquiring to confirm exact fitment.
- Q: Do you supply new or refurbished units?
- A: We can supply both new OEM units and professionally refurbished/tested units depending on availability and your budget requirements. Please specify your preference in your RFQ.
- Q: What is the lead time for international orders?
- A: In-stock units typically ship within 2–3 business days. International delivery is 5–10 business days depending on destination and shipping method.
- Q: Can you provide a warranty?
- A: Yes. All units come with a standard 90-day warranty against manufacturing defects. Extended warranty options are available for bulk orders.
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