ABB 3HAC034165-002 Robot Motor with Pinion for IRB 6620

Technical Details & Specifications

Application Scenarios

Industrial Applications

This motor is used in ABB IRB 6620 robots, which are typically deployed in heavy-duty industrial environments such as automotive body welding, large-parts material handling, foundry and forging, metal cutting, and palletizing. The IRB 6620 is part of ABB's high-payload robot family, and its axis motors carry the high torque and continuous-duty loads required for these applications.

The motor is also commonly replaced during scheduled maintenance, or after mechanical damage to the pinion, bearings, or windings.

Design Purpose

The motor is designed as the drive source for one of the IRB 6620's robot axes. The pinion is pre-installed and dynamically matched to the motor shaft at the factory, so the unit is delivered ready to install — no separate pinion pressing, gear alignment, or shaft modification is needed. Replacing the motor as a complete assembly also preserves the original pinion-mesh geometry with the gearbox, which is critical for smooth motion and long gearbox life under heavy-load operation.

Common Failures & When to Replace

Motor problems are usually reported by the controller as axis or motor faults. Typical conditions that call for repair or replacement include:

• Overcurrent or overload alarms — the motor draws abnormal current, often due to winding degradation or mechanical binding in the gearbox.
• Overheating — the motor trips on temperature faults, usually from aged insulation, restricted airflow, or prolonged overload.
• Encoder errors — position feedback is lost or unstable, causing motion faults or uncontrolled drift.
• Brake failure — the holding brake no longer holds the axis when the drive is off, causing the arm to drop.
• Abnormal noise or vibration — worn bearings or damaged pinion teeth produce grinding, clicking, or rumbling sounds.
• Insulation breakdown — measured resistance between windings and ground drops below the safe threshold, often detected during preventive maintenance.

Specific alarm codes vary with the controller software and fault type. Please contact us with the alarm number displayed on your controller for accurate diagnosis.

Why Choose Us

• Specialized in industrial robot spare parts for ABB, FANUC, KUKA, and YASKAWA, with 20 years of industry experience.
• Every part is tested and verified by experienced technicians before shipping.
• 12-month warranty on all parts, covering free repair or replacement.
• Technical support available to help with installation, troubleshooting, and part selection.
• Trusted by customers in over 100 countries, with worldwide shipping and industrial-grade packaging.

Related Products

• Other ABB IRB 6620 axis motors and motor variants
• ABB drive units for IRC5 controllers
• ABB gearboxes and RV reducers for IRB 6620
• ABB motor pinions and replacement pinions

Contact us for a full list of compatible accessories and replacement parts for your IRB 6620 robot.