ABB 3HAC037820-002 Three-Axis Motor – Obsolete IRB7600 / IRB6700 Spare Part

Technical Dossier

Product Details And Specifications

ABB 3HAC037820-002 Three-Axis Motor – Obsolete IRB7600 / IRB6700 Spare Part

The 3HAC037820-002, along with its IRB6700 counterparts 3HAC055688-003 (IRB6700-300) and 3HAC055697-003 (IRB6700-200), is no longer in active production. ABB's current robot portfolio has moved on. The installed base has not. Facilities that invested in IRB7600 and IRB6700 platforms during the 2010s are now managing assets with 10–15 years of operational life remaining — provided the mechanical and electrical subsystems can be maintained.

A full robot cell replacement, including new robot, end-of-arm tooling re-engineering, safety fencing recertification, and production requalification, routinely exceeds USD 500,000 per cell. A single three-axis motor, sourced and verified, costs a fraction of that. The arithmetic is not complicated.

DriveKNMS holds RFQ-reviewed sourcing status of this assembly. Inventory is finite and will not be replenished from the manufacturer.

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters (voltage, current rating, encoder resolution) are not published here to prevent misapplication. Confirm compatibility with your robot serial number and axis configuration before ordering.

Solving the Discontinued Hardware Crisis

The IRB7600 was ABB's flagship heavy-payload robot for nearly two decades. The IRB6700 followed as its successor in the 6 kg–300 kg payload class. Both platforms are deeply embedded in automotive, aerospace, and heavy manufacturing facilities worldwide. Neither is in active production in its original form, and the supply chain for their internal assemblies — particularly axis motor units — has contracted sharply.

The three-axis motor is not a commodity component. It is a precision assembly matched to the robot's mechanical structure, gearbox interface, and IRC5 drive system. There is no generic substitute. When this part fails, the options are: source an original, rebuild the existing unit (if the failure mode permits), or replace the robot.

For plant engineering teams managing capital asset lifecycles, the calculus is straightforward. A robot with a functional structure, calibrated tooling, and qualified production programs represents sunk capital that continues to generate return — as long as it runs. The three-axis motor is the single point of failure that can render that entire investment idle.

DriveKNMS specializes in sourcing and verifying obsolete ABB robotics components. Our inventory is not sourced from unknown secondary markets. Each unit is physically inspected, tested where possible, and documented before it is offered for sale.

Condition & Reliability Assurance

Obsolete parts sourced from secondary markets carry real risk. Electrolytic capacitor degradation, firmware version mismatches, connector pin corrosion, and counterfeit assemblies are documented failure modes in the aftermarket. Our QA process addresses each of these directly.

5-Step Verification Protocol:

• Step 1 – Physical Inspection: External examination for mechanical damage, connector integrity, and label authenticity. Units with evidence of prior field failure are quarantined.
• Step 2 – Electrolytic Capacitor Assessment: Internal boards are inspected for capacitor bulging, leakage, or ESR degradation — the most common age-related failure mode in motor drive electronics.
• Step 3 – Firmware Version Verification: Where accessible, firmware revision is confirmed against ABB's known compatibility matrix for IRC5 and S4C+ controllers.
• Step 4 – Connector and Pin Corrosion Check: All electrical connectors are inspected under magnification. Corroded or deformed pins are documented and disclosed.
• Step 5 – Functional Documentation Review: Available service history, lot codes, and date codes are recorded. Units are shipped with full condition disclosure documentation.

We do not represent refurbished units as new unless they have undergone full rebuild by a qualified ABB service partner. Condition is disclosed accurately on every order.

Key Features for System Maintenance

The 3HAC037820-002 is a direct mechanical and electrical replacement for the original factory-installed unit. There is no requirement for robot reprogramming, axis recalibration from scratch, or controller hardware modification when replacing like-for-like.

• Drop-in replacement: Matches the original mounting interface, connector pinout, and encoder protocol. No mechanical adaptation required.
• No reprogramming required: The IRC5 controller retains all existing motion programs, tool data, and work object definitions. Replacement does not trigger a requalification of production programs in standard scenarios.
• Avoids engineering reconstruction costs: Replacing this motor unit preserves the existing robot calibration baseline. A full robot replacement would require end-of-arm tooling re-engineering, safety system recertification, and production requalification — costs that dwarf the price of a spare motor.
• Extends asset life by 5–10 years: A verified replacement motor, combined with a scheduled preventive maintenance program, can extend the operational life of an IRB7600 or IRB6700 cell well beyond the manufacturer's standard support window. Facilities with structured spare parts programs routinely operate these platforms 15–20 years from initial installation.
• Protects production qualification investment: In regulated industries — automotive Tier 1, aerospace, food processing — production processes are formally qualified. Replacing a robot resets that qualification. Replacing a motor does not.

How do I confirm this is a genuine ABB assembly and not a counterfeit?
Each unit is inspected for label authenticity, date codes, and construction quality consistent with ABB manufacturing standards. We provide full condition disclosure documentation with every shipment. If you require third-party authentication, we can discuss options at the time of inquiry.

Can this part be used with both IRC5 and S4C+ controllers?
Compatibility depends on the specific robot serial number and controller revision. Confirm your robot's configuration details when placing an inquiry. We will advise on compatibility based on the information provided.