ABB IRB 6600 & IRB 2600 Motor Modules: IRB66603HAC026733-001 IRB26003HAC029896-024 IRB26003HAC030006-001

Technical Dossier

Product Details And Specifications

ABB IRB 6600 & IRB 2600 Series: Comprehensive Motor Module Range and Technical Overview

The ABB IRB 6600 and IRB 2600 are industrial articulated robot series deployed across heavy-process industries including automotive body-in-white assembly, chemical plant material handling, nuclear facility maintenance robotics, and petroleum refinery pipeline operations. The IRB 6600 carries payloads up to 225 kg with a reach of 2.55 m, while the IRB 2600 handles payloads up to 20 kg with a reach of 1.65 m. Both platforms share a common axis-drive architecture based on ABB's S4C+ and IRC5 controller generations, making cross-series motor and gearbox components partially interchangeable at the axis level. Global installed base for these two series exceeds 50,000 units, with active deployments in facilities requiring 24/7 uptime and multi-decade service life. Axis motor assemblies — including pinion-integrated motor units — are among the highest-demand spare parts categories for both series due to their role in primary motion axes (Axis 1 through Axis 6).

The Evolution of IRB 6600 & IRB 2600 Architecture

The IRB 6600 was introduced in the early 2000s as a successor to the IRB 6400 series, transitioning from the S4C controller platform to the IRC5 modular controller architecture. This shift introduced EtherNet/IP and DeviceNet communication layers, replacing earlier Interbus-S fieldbus implementations. The IRB 2600 followed in 2010 as a compact, high-speed variant targeting arc welding, material handling, and machine tending applications. Key architectural milestones include the transition from resolver-based position feedback to absolute encoder systems (circa 2005–2008), the introduction of Integrated Force Control (IFC) as an optional axis-level feature, and the adoption of SafeMove safety controller integration from 2009 onward. Compatibility note: motors manufactured for S4C+ controller variants use different encoder harness pinouts compared to IRC5-generation units. Procurement must verify controller generation before ordering axis motor assemblies. Current OEM replacement parts are supplied under the 3HAC prefix numbering system; legacy 4944 and 4945 prefix parts are discontinued but remain available through authorized aftermarket channels.

IRB 6600 & IRB 2600 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the ABB IRB 6600 and IRB 2600 spare parts ecosystem, classified by functional category. All part numbers use the ABB 3HAC prefix standard.

Axis Motor Assemblies (Motor incl. Pinion)

• 3HAC026733-001: IRB 6600 Axis 1 motor assembly with integrated pinion gear, IRC5-compatible, resolver feedback.
• 3HAC029896-024: IRB 2600 Axis 2 motor assembly with pinion, absolute encoder variant, IRC5 platform.
• 3HAC030006-001: IRB 2600 Axis 3 motor assembly with pinion, standard torque rating, IRC5 platform.
• 3HAC026735-001: IRB 6600 Axis 2 motor assembly, high-torque variant, pinion included.
• 3HAC026736-001: IRB 6600 Axis 3 motor assembly with pinion, mid-range payload configuration.
• 3HAC026737-001: IRB 6600 Axis 4 motor assembly, wrist drive unit, pinion integrated.
• 3HAC026738-001: IRB 6600 Axis 5 motor assembly, compact form factor, pinion included.
• 3HAC026739-001: IRB 6600 Axis 6 motor assembly, tool flange drive, pinion integrated.
• 3HAC029897-001: IRB 2600 Axis 1 motor assembly with pinion, base rotation drive.
• 3HAC029898-001: IRB 2600 Axis 4 motor assembly, wrist module, pinion included.

Gearbox & Mechanical Drive Units

• 3HAC028357-001: IRB 6600 Axis 1 gearbox unit, complete assembly, grease-filled.
• 3HAC028358-001: IRB 6600 Axis 2 gearbox, high-load rated, compatible with 225 kg payload variant.
• 3HAC025562-001: IRB 2600 Axis 2 gearbox assembly, standard configuration.
• 3HAC025563-001: IRB 2600 Axis 3 gearbox, compact design, grease-lubricated.

Controller & I/O Modules (IRC5 Platform)

• 3HAC025338-001: IRC5 Main Computer Unit (MCU), primary CPU module for IRB 6600/2600 IRC5 controllers.
• 3HAC026254-001: IRC5 Axis Computer (DSQC 668), motion control processor, 6-axis drive coordination.
• 3HAC025917-001: IRC5 I/O Unit (DSQC 652), 16 DI / 16 DO digital I/O module.
• 3HAC025784-001: IRC5 Drive Unit, single-axis servo amplifier module.
• 3HAC025785-001: IRC5 Drive Unit, dual-axis servo amplifier module.
• 3HAC026254-002: IRC5 Axis Computer variant, updated firmware baseline, DSQC 668 revision B.

Power Supply Units

• 3HAC024488-001: IRC5 System Power Supply, 24 VDC output, controller cabinet primary PSU.
• 3HAC025338-002: IRC5 Backup Power Unit, capacitor-based, encoder position retention during power loss.

Sourcing Hard-to-Find & Obsolete IRB 6600 / IRB 2600 Parts

The IRB 6600 series entered its mature lifecycle phase circa 2015, with OEM new-production of select mechanical components discontinued by 2020. The IRB 2600 remains in active production as of 2026, though early S4C+-era variants are fully discontinued. DriveKNMS maintains a dedicated inventory of pulled, refurbished, and new-old-stock (NOS) components for both series, with particular depth in axis motor assemblies, gearbox units, and IRC5 controller modules. For end-users operating facilities with 10+ year maintenance horizons — common in nuclear, petrochemical, and heavy manufacturing environments — DriveKNMS provides lifecycle extension procurement: sourcing discontinued 3HAC-prefix parts, cross-referencing legacy 4944/4945 part numbers to current equivalents, and supplying matched sets for multi-axis overhaul projects. Minimum order quantities are not enforced; single-unit emergency procurement is supported with expedited shipping from bonded warehouse stock.

Quality Control for the IRB 6600 / IRB 2600 Range

Motor assemblies with integrated pinions — such as 3HAC026733-001, 3HAC029896-024, and 3HAC030006-001 — undergo a multi-stage inspection protocol at DriveKNMS before dispatch. Stage 1: Visual and dimensional inspection of pinion gear teeth for wear, chipping, and pitch deviation using calibrated optical comparators. Stage 2: Encoder signal verification using ABB-compatible test rigs, confirming absolute position data integrity across full rotation. Stage 3: Winding resistance and insulation resistance (IR) testing per IEC 60034-1 standards, with minimum 100 MΩ insulation resistance at 500 VDC. Stage 4: No-load run test at rated speed for a minimum of 30 minutes, monitoring bearing temperature rise and vibration signature via accelerometer. Stage 5: Functional backplane communication test for IRC5-platform I/O and CPU modules, verifying EtherNet/IP node enumeration and DSQC firmware version compatibility. All units are shipped with a test report and 12-month warranty against manufacturing defects.

For sourcing inquiries, BOM matching, or emergency procurement of ABB IRB 6600 and IRB 2600 spare parts:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com