Robot Arm Balancing Solution – ABB 3HNA031006-001 / 3HAC037163-003 / 3HAC058121-005 | IRB 4600 & IRB 6700 Series
Where This Product Is Used
The ABB Balancing Device (P/N: 3HNA031006-001 / 3HAC037163-003 / 3HAC058121-005) is a precision mechanical counterbalance unit installed on the upper arm axis of ABB IRB 4600 and IRB 6700 industrial robots. It is deployed across high-demand automation environments including:
- Automotive body welding lines – compensates gravitational load on axis 2/3 during continuous arc welding cycles
- Heavy-payload palletizing cells – reduces servo motor torque demand on IRB 6700 (payload 150–300 kg variants)
- Press-tending & stamping automation – maintains arm position accuracy under rapid vertical motion profiles
- Foundry & die-casting extraction – withstands high-cycle thermal environments while preserving spring preload integrity
- General-purpose 6-axis robot maintenance – OEM replacement during scheduled overhaul or after spring fatigue failure
Technical Specifications
| Part Numbers | 3HNA031006-001 / 3HAC037163-003 / 3HAC058121-005 |
| Compatible Robots | ABB IRB 4600 (all variants), ABB IRB 6700 (all variants) |
| Function | Gravity compensation / spring balancing for axis 2 |
| Type | Spring-loaded mechanical balancing device |
| OEM Reference | ABB Robotics spare parts catalog |
| Condition | New / Refurbished (specify on inquiry) |
| Lead Time | In stock – ships within 3–5 business days |
| Country of Origin | Sweden / China (OEM & compatible) |
Why Engineers Specify This Model
- Reduces axis 2 motor load by up to 40% – extends servo drive and gearbox service life in high-cycle applications
- Direct OEM form-fit-function replacement – no mechanical modification required; mounts to original bracket points
- Critical for IRB 6700 heavy-payload variants – without a functional balancing device, axis 2 torque limits are exceeded, triggering safety faults
- Spring fatigue is a known wear item – ABB recommends inspection every 40,000 operating hours; replacement restores rated performance
- Dual P/N coverage – 3HAC037163-003 (IRB 4600) and 3HAC058121-005 (IRB 6700) are cross-referenced under 3HNA031006-001 assembly
Complete System Bill of Materials
When replacing the balancing device, engineers typically source the following complementary parts:
- Axis 2 gearbox (3HAC17484-1 / 3HAC025338-001)
- Balancing device mounting bracket hardware kit
- Axis 2 motor (3HAC17484-1 series)
- Robot controller IRC5 / OmniCore service kit
- ABB RobotWare calibration software license (for post-replacement axis calibration)
Contact support@konmask.com for a complete BOM quote.
Compliance & Industry Standards
- Designed to ABB Robotics OEM mechanical specifications
- Compatible with ISO 10218-1 industrial robot safety requirements
- Suitable for use in CE-marked robot cells (EU Machinery Directive 2006/42/EC)
- RoHS-compliant materials where applicable
Quality Assurance & Sourcing
Konmask.com sources ABB spare parts through authorized distribution channels and verified secondary-market suppliers. Every unit undergoes:
- Visual and dimensional inspection against OEM drawings
- Spring preload verification (where applicable)
- Traceability documentation provided on request
- 90-day warranty on new units; 30-day warranty on refurbished units
How to Source This Part
- Confirm your robot model and serial number (nameplate on robot base)
- Verify P/N: 3HNA031006-001, 3HAC037163-003, or 3HAC058121-005 in your ABB spare parts manual
- Submit your inquiry via support@konmask.com or WhatsApp +0086 19859288691
- Receive stock confirmation, lead time, and commercial invoice within 24 hours
- Payment via T/T, PayPal, or trade assurance; worldwide shipping available
Application-Specific FAQ
Q: Is 3HAC037163-003 the same as 3HAC058121-005?
A: They are application-specific variants — 3HAC037163-003 is the primary P/N for IRB 4600; 3HAC058121-005 applies to IRB 6700. Both are covered under the 3HNA031006-001 assembly. Confirm with your robot serial number before ordering.
Q: Can I operate the IRB 6700 without a functional balancing device?
A: No. ABB’s safety firmware will trigger axis 2 overload faults. The balancing device is a mandatory mechanical component, not optional.
Q: How do I know if my balancing device has failed?
A: Common symptoms include axis 2 following errors, increased motor current on axis 2, audible spring noise, or visible oil/grease leakage from the device housing.
Q: Do you supply the calibration service after replacement?
A: We supply the part and documentation. Axis calibration must be performed by a qualified ABB-certified engineer using RobotStudio or the FlexPendant.
Q: What is the lead time for bulk orders?
A: Standard stock: 3–5 business days. For orders of 5+ units, contact us for priority allocation and volume pricing.
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Contact: support@konmask.com | +0086 19859288691
