ABB 3HAC026733-001 Replacement for IRB 6660/IRB 2600

Product Overview

ABB 3HAC026733-001 Replacement for IRB 6660 / IRB 2600: Smooth Transition & Legacy System Compatibility

When your ABB IRB 6660 or IRB 2600 robotic arm experiences axis drive failure or requires a planned upgrade from an end-of-life servo motor assembly, the ABB 3HAC026733-001 Motor with Pinion is the direct, drop-in replacement engineered for seamless continuity. This axis drive unit is purpose-built for the Axis 1 drive train of the IRB 6660 series and is cross-compatible with select IRB 2600 configurations, making it the preferred choice for maintenance engineers seeking to minimize production downtime and avoid costly re-engineering of the robot cell.

Unlike generic aftermarket alternatives, the 3HAC026733-001 preserves the original mechanical interface, encoder feedback protocol, and drive pinion geometry — ensuring that your existing ABB IRC5 controller, servo drive amplifier, and robot base frame require no modification. The replacement process follows standard ABB mechanical service procedures, and the motor’s integrated pinion eliminates the need for separate gear alignment tools during reinstallation.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful axis drive replacement on the IRB 6660 or IRB 2600 rarely involves a single component in isolation. During the migration from a failed or end-of-life motor assembly, field engineers typically audit the surrounding drive chain and control architecture to prevent repeat failures and ensure system-wide reliability.

In many retrofit projects, the ABB DSQC661 or DSQC662 drive amplifier modules are inspected alongside the motor replacement, as worn drive electronics can accelerate motor degradation. If the IRC5 controller cabinet shows signs of aging, the ABB DSQC1000 main computer board is often evaluated for concurrent replacement to bring the entire control system to a current firmware baseline.

For facilities migrating from older IRB 6600 or IRB 4600 platforms to the IRB 6660 architecture, the transition typically involves re-routing the ABB 3HAC044168-001 cable harness and updating the robot base wiring to match the IRB 6660’s revised connector layout. The ABB SMB (Serial Measurement Board) 3HAC14550-2 is another component commonly replaced during axis drive servicing, as it interfaces directly with the motor encoder and is sensitive to vibration-induced connector fatigue.

Power supply integrity is equally critical: the ABB DSQC604 24VDC power supply unit within the IRC5 cabinet should be verified for output stability before commissioning the new motor, since voltage ripple can corrupt encoder signals during the initial calibration sequence. In high-cycle applications, the ABB 3HAC025338-001 brake unit is inspected as part of the same service interval, given its mechanical coupling to the Axis 1 drive train.

For sites operating multiple robot cells, the ABB FlexPendant (DSQC679) is used to execute the fine calibration routine post-installation, and having a calibration pendulum tool (ABB 3HAC16831-1) on hand ensures axis mastering is completed to OEM specification without requiring an ABB field service visit. Facilities that maintain their own spare parts inventory often stock the ABB 3HAC026733-001 alongside the DSQC series drive modules and SMB boards as a matched set, reducing mean time to repair (MTTR) for Axis 1 faults across their robot fleet.

Retrofit Guidance FAQ

Q: Does replacing the 3HAC026733-001 require re-programming the IRC5 controller?
A: No. The 3HAC026733-001 is a direct OEM-equivalent replacement. The IRC5 controller retains all existing motion parameters, tool data, and work object definitions. Only axis mastering (calibration) is required after mechanical installation, which is performed via the FlexPendant using the standard fine calibration routine.

Q: Is the pinion pre-installed and pre-aligned on the 3HAC026733-001?
A: Yes. The motor ships with the pinion factory-installed and torqued to ABB specification. No separate gear press or alignment fixture is required during installation, significantly reducing on-site labor time.

Q: Can this motor replace the 3HAC029896-024 or 3HAC030006-001 on the IRB 2600?
A: The 3HAC026733-001 is cross-referenced against both 3HAC029896-024 and 3HAC030006-001 for specific IRB 2600 axis configurations. We recommend confirming the axis number and robot variant (IRB 2600-12/1.65 or IRB 2600-20/1.65) before ordering. Our technical team can verify compatibility based on your robot serial number.

Q: What communication protocol does the motor encoder use?
A: The encoder communicates via ABB’s proprietary serial resolver interface, fully compatible with the IRC5 single-cabinet and dual-cabinet configurations. No protocol adapters or gateway devices are required.

Q: How much physical space is required for installation?
A: The 3HAC026733-001 shares the identical mounting footprint and cable exit geometry as the original unit. No modifications to the robot base compartment, cable management brackets, or protective covers are required.

Q: What is the typical on-site installation time?
A: For a trained ABB-certified technician, mechanical replacement and axis mastering typically requires 2–4 hours per robot, depending on site access conditions and the state of the existing cable harness.

Warranty Assurance

Every ABB 3HAC026733-001 unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes a pre-shipment functional inspection including visual examination, connector integrity check, and encoder signal verification where applicable. Units are packaged in anti-static, shock-resistant packaging to prevent transit damage.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period, subject to inspection of the returned item. Our after-sales response team is available to support fault diagnosis, installation guidance, and compatibility verification. We maintain stock of the 3HAC026733-001 and related drive components to ensure rapid dispatch — typically within 1–3 business days for in-stock items, with express shipping options available for urgent production recovery situations.

For B2B procurement teams managing multi-site robot fleets, we offer volume pricing, consignment stock arrangements, and documented traceability records for each unit supplied. All units are sourced through verified supply channels and are accompanied by documentation supporting your incoming inspection process.