ABB 3HAC057542-003 Motor with Pinion for IRB 6640 Axis 2

Axis 2 Rotary AC Servo Motor with Pinion — Technical Overview

Specifications

Industrial Applications

• Heavy-payload material handling — moving large castings, forgings, and steel parts between workstations.
• Machine tending — loading and unloading CNC machining centers, presses, and injection molding machines.
• Spot welding and large-body assembly in automotive body shops.
• Palletizing and depalletizing of heavy packaged goods at end-of-line.
• Foundry and forge part transfer — the Foundry+ rating allows the motor to operate in elevated ambient temperatures and dirty environments typical of casting and forging cells.

Design Purpose

The motor converts electrical energy from the axis-2 drive unit into controlled mechanical rotation of the robot's upper arm. The integrated pinion meshes directly with the axis-2 gearbox, transmitting torque to the upper arm while the built-in resolver/encoder feeds back precise rotor position to the IRC5 controller. Because ABB ships the motor and pinion as a single matched assembly, no gear-pressing is required at installation and the backlash stays within factory tolerance.

The Std / Foundry+ designation indicates the motor has been qualified by ABB for both Standard and Foundry+ rated IRB 6640 robots, making it suitable for harsh industrial environments where elevated temperatures, dust, or contamination would normally shorten motor life.

Common Failure Modes

• Overcurrent or overheat tripping — the drive unit reports motor overload after heavy-duty cycles.
• Encoder / resolver feedback loss — axis 2 shows position drift or alarms during homing.
• Holding brake failure — the upper arm sags or drops immediately when the servo is switched off.
• Abnormal noise or vibration from axis 2 — typically caused by worn pinion teeth, bearing damage, or contamination inside the motor.
• Insulation degradation or ground fault — the axis-2 drive trips the moment the motor is enabled, especially common in foundry cells where heat and dust accelerate insulation aging.

Why Choose Us

• Focused ABB robot spare-parts supplier covering servo motors, drive units, gearboxes, and teach pendants for IRB-series robots.
• Each axis motor is inspected and tested (encoder signal, insulation resistance) before packing.
• Cross-reference support — if your older unit was originally shipped under 3HAC056855-001 or 3HAC033163-001, we confirm compatibility against your robot serial number.
• 12-month warranty with remote technical support for installation and commissioning questions.
• Multiple payment methods accepted — PayPal, T/T, and Alibaba Trade Assurance.

Related Products

• ABB IRB 6640 axis 1, 3, 4, 5, and 6 servo motors
• ABB IRB 6640 axis gearboxes
• ABB robot servo drive units (DSQC series)
• ABB robot pinions and replacement gears
• ABB teach pendants and IRC5 controller accessories