ABB 3HAC026733-001 Robot Servo Motor

ABB 3HAC026733-001 Motor with Pinion: Stop the Clock on Your Downtime — Ship Today

Your IRB 6660 welding cell just tripped an axis fault. The line is cold. Every minute the robot sits idle, you’re bleeding production output — and your maintenance window is already closing. The 3HAC026733-001 motor-with-pinion assembly is the single component standing between you and full-speed recovery. We stock it. We ship it today. That’s the only conversation that matters right now.

This is the OEM axis drive motor used across ABB’s IRB 6660 heavy-payload and IRB 2600 medium-payload robot families — two of the most widely deployed platforms in automotive body shops, foundry cells, and CNC tending lines worldwide. Cross-reference part numbers 3HAC029896-024 and 3HAC030006-001 map to the same assembly across different robot revision levels. If your robot is down and you’re holding one of these part numbers, you’re in the right place.

URGENT REQUIREMENT? Contact: [email protected] | WhatsApp: +86 18359268345

Quick Technical Datasheet

Troubleshooting & Replacement Tips

Common fault codes that point directly to this motor:

• 50056 / 50057 — Motor current error, Axis 1 or Axis 2: Typically caused by winding insulation breakdown or resolver signal loss. If the drive unit (DSQC 661 / DSQC 662) checks out clean, the motor is the culprit. Swap first, recalibrate second.
• 50024 — Joint speed error: Worn pinion gear causes backlash that the IRC5 controller reads as velocity overshoot. Inspect the pinion teeth before condemning the drive unit.
• 38203 — Resolver fault: Can be cable-related, but if the resolver cable harness tests good (check pins 1–6 on the motor connector for continuity and insulation resistance >1 MΩ), the resolver inside the motor has failed. Full motor replacement is the correct fix — resolver-only replacement is not field-serviceable on this assembly.

Step-by-step replacement checklist (field-proven sequence):

1. Set the robot to Calibration Position via FlexPendant before powering down. Record the fine calibration offset values from the SMB (Serial Measurement Board) — you will need these after installation.
2. Isolate power at the IRC5 controller. Lock out / tag out. Confirm zero energy state with a multimeter on the DC bus capacitors — wait for discharge below 50 V before opening the robot base.
3. Remove the motor cover plate (4× M8 bolts, 13 mm socket). Note the cable routing — photograph before disconnecting. The motor connector is a 17-pin circular MIL-spec type; release the locking ring counter-clockwise.
4. Remove the 4× M10 motor mounting bolts (17 mm). The motor and pinion will slide out as a unit — support the weight (approx. 4.5 kg) to avoid dropping onto the gearbox crown gear.
5. Inspect the gearbox crown gear for pitting or spalling before installing the new motor. If the crown gear shows wear, replacing the motor alone will shorten the new unit’s service life.
6. Install the new 3HAC026733-001 assembly. Torque the M10 mounting bolts to 50 Nm in a cross pattern. Reconnect the motor cable — ensure the locking ring clicks fully into position.
7. Power up the IRC5. Navigate to ABB Menu → Calibration → Fine Calibration. Enter the offset values recorded in Step 1. If the SMB battery was disconnected during the repair, perform a full revolution counter update before fine calibration.
8. Run a slow-speed test cycle (25% speed) for 10 minutes. Monitor the axis current via RobotStudio or the FlexPendant event log. Confirm no recurrence of fault codes before returning to production speed.

Configuration note on firmware: The 3HAC026733-001 motor does not carry embedded firmware — all motion parameters reside in the IRC5 controller’s RAPID configuration files. No firmware flashing is required post-replacement. However, if you are replacing a motor on a robot running RobotWare 5.x and upgrading to RobotWare 6.x simultaneously, re-verify the motor calibration data file (calib.cfg) for axis parameter compatibility before going live.

Reliability in Harsh Conditions

The IRB 6660 was designed for foundry environments — one of the most punishing duty cycles in industrial automation. The 3HAC026733-001 motor reflects that design intent. The stator windings carry Class H insulation (180°C rated), providing a substantial thermal margin even in press-tending cells where ambient temperatures routinely exceed 60°C. The sealed bearing arrangement is rated for continuous operation under the radial loads generated by the pinion-to-crown gear mesh, with a calculated L10 bearing life exceeding 20,000 hours at rated load.

Vibration resistance is validated to IEC 60068-2-6 (sinusoidal) and IEC 60068-2-64 (random broadband) — the same test profiles used for aerospace ground support equipment. In practice, this means the motor survives the shock loads of a 235 kg payload robot operating at full acceleration without resolver signal degradation or connector fretting. The motor housing is IP67-rated at the cable entry point, providing protection against coolant mist and wash-down cycles common in automotive paint shop environments.

Units supplied from our Xiamen warehouse are stored in climate-controlled conditions (18–25°C, RH <60%) with desiccant packs inside each sealed carton. Long-term storage does not compromise the resolver calibration or bearing pre-load — the motor is ready to install directly from the box.

Global Express Logistics

Our dispatch hub is located in Xiamen, Fujian — one of China’s primary export ports with direct DHL Express and FedEx International Priority connections to major industrial hubs worldwide. Here’s how a typical urgent order moves:

• Order confirmed before 14:00 CST: Same-day pick, pack, and handover to DHL/FedEx. Tracking number issued within 2 hours of dispatch.
• Transit to Southeast Asia (Thailand, Vietnam, Indonesia): 1–2 business days via DHL Express.
• Transit to Europe (Germany, Poland, Czech Republic, Turkey): 2–3 business days via FedEx International Priority.
• Transit to North America (USA, Mexico, Canada): 2–3 business days via DHL Express Worldwide.
• Transit to Middle East (UAE, Saudi Arabia, Qatar): 2–3 business days via FedEx International Priority.

Every shipment includes a full commercial invoice with HS Code 8501.52 (AC motors, multi-phase, 750W–75kW range), packing list, and certificate of origin — all documents required for customs clearance in most jurisdictions. For customers in countries with import duty exemptions on industrial automation components, we can provide additional documentation to support duty relief claims. DDP (Delivered Duty Paid) terms are available on request for customers who prefer a landed-cost quote with no customs surprises on arrival.

Fragile component packaging: the motor assembly ships in a custom-cut EPE foam insert inside a double-wall corrugated carton, rated for drops up to 1.2 m per ISTA 2A protocol. The pinion gear is protected with a machined plastic cap to prevent tooth damage in transit.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
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