ABB 3HAC043453-003 Axis 2 Motor with Pinion for IRB 6700

Axis 2 Rotary AC Motor with Pinion for ABB IRB 6700 Manipulators

Specifications

Industrial Applications

• Heavy-payload material handling on IRB 6700 cells — transferring large castings, forgings and steel parts between stations.
• Spot welding and large-body assembly in automotive body shops, where axis 2 carries the highest static load of any joint in the cycle.
• Machine tending — loading and unloading CNC machining centres, presses and injection moulding machines.
• Palletizing and depalletizing of heavy packaged goods at end-of-line.
• Foundry and die-cast part transfer, including robots in the Foundry Plus protection configuration.
• Maintenance stock for older IRB 6700 installations: many machines in service were originally delivered with this article number, so it is the number that appears on the existing motor label and in the maintenance records.

Design Purpose

Axis 2 is the joint that swings the lower arm of the robot forward and back, carrying the weight of the upper arm, wrist, tool and payload at the longest lever arm in the machine. That makes it the highest-torque joint on the manipulator, which is why ABB supplies its motor as a dedicated article with the pinion already mounted on the shaft: the pinion is the interface into the axis-2 gearbox, and delivering it as part of the assembly removes a press-fit step from the field replacement.

What matters most on this particular number is its status. ABB spare-part data lists 3HAC043453-003 as the replaced product ID against 3HAC055450-003 — in other words, this is the older of the two numbers, and it is the one that will be printed on the label of a motor that has been in service for years. For a maintenance buyer that cuts both ways: the number on the existing unit tells you what is installed, but the number to order may now be the successor. The same caution applies to the robot itself. The IRB 6700 spans many payload variants, and ABB documents the axis-2 motor among the joints affected by the Foundry Plus protection configuration, so variant and protection class have to be resolved before the article number is fixed.

Common Failure Modes

• Overcurrent or overheat tripping — the drive unit reports motor overload after sustained heavy-duty cycles at axis 2.
• Feedback-device fault — loss of position feedback, giving axis-2 position drift or a fault during homing.
• Holding-brake failure — the lower arm sags or drops when the servo is switched off.
• Gearbox oil entering the motor — primary sealing between the gearbox and the motor fails. This is the failure mode the type B motor flange evacuation is designed to reveal.
• Abnormal noise or vibration from axis 2 — worn pinion teeth, bearing damage, or contamination inside the motor.
• Insulation degradation or ground fault — the axis-2 drive trips as soon as the motor is enabled.
• Wrong article ordered — the number read off the old motor label was ordered without checking whether ABB has since replaced it, or without resolving the robot variant and protection configuration.

Alarm codes for this unit are shown on the controller display. Send us the fault code and we confirm the diagnosis and the matching spare part.

Why Choose Us

• Specialized in industrial robot spare parts for ABB, FANUC, KUKA and YASKAWA.
• Succession check before quotation: if you send us 3HAC043453-003, we tell you whether the current ABB article for your machine is this number or the successor 3HAC055450-003, so your order is not placed against a superseded reference.
• Variant and protection-class confirmation: we check your IRB 6700 payload variant and whether the robot is Standard or Foundry Plus before quoting the axis-2 motor.
• Each unit is inspected and tested (encoder signal, insulation resistance) before packing, with secure industrial packaging and full order tracking from Shanghai.
• We read the compatibility rules with you rather than leaving substitution to assumption — axis-2 motors are not interchangeable across the IRB 6700 variant range.
• Quote-based service — send your inquiry with the robot model, serial number, axis and the marking on your existing unit for a matched offer.

Related Products

• 3HAC055450-003 — the current ABB article that lists 3HAC043453-003 as its replaced product ID (check this first)
• 3HAC055450-004 — the other variant in the 3HAC055450 series; distinguish by IRB 6700 variant and protection configuration
• 3HAC057339-003 — removal tool M12 for parting the axis-2 motor from the gearbox, per the ABB IRB 6700 product manual
• 3HAC15534-1 — motor lifting accessory specified in the ABB IRB 6700 product manual for axis-2 motor handling
• 3HAC032140-004 — synthetic gear oil for ABB robot joint gearboxes, for the axis-2 gearbox work alongside the motor replacement