ABB IRB6640 & IRB4600 Articulated Robot Modules 3HAC023171-001 3HAC023173-001 3HAC029864-001 3HAC020536-017

Technical Dossier

Product Details And Specifications

ABB IRB6640 & IRB4600 Series Technical Notes

The ABB IRB6640 and IRB4600 are six-axis articulated industrial robots engineered for high-payload, high-precision applications across global heavy industry. The IRB6640 carries payloads up to 235 kg with a reach of 2.55 m, making it a standard platform in automotive body-in-white assembly, foundry operations, and heavy material handling at chemical plants, refineries, and nuclear facility maintenance environments. The IRB4600 addresses mid-range payload requirements (20–60 kg) with a compact footprint suited for arc welding, machine tending, and palletizing in process industries. Both platforms operate on ABB's S4C+ and IRC5 controller architectures and have accumulated multi-decade installed bases across North America, Europe, and Asia-Pacific industrial facilities. Lifecycle support for these platforms remains a critical procurement requirement as original production has transitioned to successor models.

The Evolution of IRB6640 & IRB4600 Architecture

ABB introduced the IRB6600 family in the late 1990s as a successor to the IRB6000 platform, with the IRB6640 emerging as a refined variant optimized for higher repeatability (±0.07 mm) and extended wrist torque ratings. The IRB4600 was introduced in the 2010s as a replacement for the IRB4400, incorporating the IRC5 single-cabinet controller and Integrated Force Control compatibility. Key architectural transitions include the shift from S4C+ to IRC5 controller (affecting drive unit pinouts and fieldbus module compatibility), the introduction of the FlexPendant (replacing the TPU teach pendant), and the migration from DeviceNet to PROFINET/EtherNet/IP as the primary fieldbus standard. Mechanical drive units, balancing devices, and axis computer boards from the S4C+ era are not directly interchangeable with IRC5-generation equivalents without firmware and hardware adaptation. Sourcing correct-generation spare parts is therefore a prerequisite for successful maintenance.

IRB6640 & IRB4600 Full Catalog & Functionalities (SKU List)

IRB6640 — Mechanical & Drive Components

• 3HAC023171-001: IRB6640 axis-1 gearbox unit, primary rotational drive assembly
• 3HAC023173-001: IRB6640 axis-2 gearbox unit, lower arm rotational drive module
• 3HAC020536-017: IRB6640 balancing device assembly, counterbalance spring cylinder for axes 2–3
• 3HAC025338-001: IRB6640 axis-3 gearbox, upper arm drive unit
• 3HAC025562-001: IRB6640 wrist unit complete, axes 4–5–6 integrated assembly
• 3HAC026253-001: IRB6640 motor axis-1, AC servo motor with resolver
• 3HAC026254-001: IRB6640 motor axis-2, AC servo motor with resolver
• 3HAC026255-001: IRB6640 motor axis-3, AC servo motor with resolver
• 3HAC14550-2: IRB6640 serial measurement board (SMB), encoder signal processing unit
• 3HAC17484-1: IRB6640 axis computer board, IRC5 generation motion control card

IRB4600 — Mechanical & Drive Components

• 3HAC029864-001: IRB4600 axis-1 gearbox unit, base rotation drive assembly
• 3HAC029865-001: IRB4600 axis-2 gearbox unit, lower arm drive module
• 3HAC029866-001: IRB4600 axis-3 gearbox unit, upper arm drive module
• 3HAC029867-001: IRB4600 wrist unit, integrated axes 4–5–6 assembly
• 3HAC031683-001: IRB4600 balancing device, spring-loaded counterbalance cylinder
• 3HAC035960-001: IRB4600 motor axis-1, AC servo motor with integrated resolver
• 3HAC035961-001: IRB4600 motor axis-2, AC servo motor with integrated resolver
• 3HAC14550-2: IRB4600 serial measurement board (SMB), shared platform with IRB6640
• 3HAC036060-001: IRB4600 cable harness set, complete internal wiring loom
• 3HAC036061-001: IRB4600 upper arm housing assembly, structural casting with bearing seats

IRC5 Controller Modules (Compatible with Both Platforms)

• 3HAC026254-001: IRC5 drive unit module, axis drive board for single-axis control
• 3HAC018136-001: IRC5 main computer unit (MCU), system controller board
• 3HAC020466-001: IRC5 I/O module, digital I/O expansion board 24 VDC
• 3HAC025466-001: IRC5 DSQC 663 I/O unit, 16 DI / 16 DO fieldbus I/O module
• 3HAC031670-001: IRC5 power supply unit, 24 VDC regulated PSU for controller cabinet

Quality Control for the IRB6640 & IRB4600 Range

All IRB6640 and IRB4600 mechanical and electronic components processed by DriveKNMS undergo a structured inspection protocol prior to dispatch. Gearbox units (3HAC023171-001, 3HAC023173-001, 3HAC029864-001 series) are inspected for backlash within ABB-specified tolerances, oil seal integrity, and bearing play. Servo motors are tested for resolver signal output, winding resistance, and insulation resistance at 500 VDC. SMB boards and axis computer cards are bench-tested under simulated IRC5 bus communication to verify encoder signal processing and EEPROM data integrity. All units are assigned a test record number and shipped with inspection documentation. Remanufactured gearboxes are filled with ABB-specified lubricant (Shell Tivela S 320 or equivalent) and sealed prior to packaging.