ABB IRB 6620 / IRB 6640 RV Reducer Modules 3HAC024316-008 3HAC024316-006

Technical Dossier

Product Details And Specifications

ABB IRB 6620 / IRB 6640 Series: Comprehensive RV Reducer Range and Technical Overview

The ABB IRB 6620 and IRB 6640 are six-axis industrial robot platforms deployed at scale across heavy-industry sectors including automotive body-in-white assembly, foundry handling, chemical plant material transfer, and nuclear facility maintenance. Both platforms share a common mechanical architecture centered on Nabtesco RV-series cycloidal reducers, which are the primary wear components requiring periodic replacement in high-duty-cycle installations. The IRB 6620 carries a rated payload of 150 kg with a reach of 2.2 m; the IRB 6640 is available in multiple payload/reach configurations (130 kg / 3.2 m, 185 kg / 2.8 m, 205 kg / 2.75 m). Both series are controlled via the ABB IRC5 controller and programmed in RAPID. Installed base globally is estimated in the tens of thousands of units, making reducer availability a critical supply-chain concern for maintenance, repair, and overhaul (MRO) operations.

IRB 6620 / IRB 6640 Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented reducer and mechanical spare part range for the IRB 6620 and IRB 6640 platforms. Each entry reflects a specific axis assignment or mechanical sub-assembly.

3HAC024316-008: IRB 6620 axis reducer assembly, RV-550E-242.73 specification, primary joint drive unit.
3HAC024316-006: IRB 6640 / IRB 6620 shared axis reducer, RV-550E-242.73 specification, cross-platform compatible unit.
3HAC026253-001: IRB 6640 axis 1 gearbox assembly, complete housing with output flange.
3HAC025338-001: IRB 6640 axis 2 gearbox unit, rated for full payload configurations up to 205 kg.
3HAC025339-001: IRB 6640 axis 3 gearbox unit, intermediate arm drive assembly.
3HAC025340-001: IRB 6640 axis 4 wrist gearbox, inner wrist rotation drive.
3HAC025341-001: IRB 6640 axis 5 wrist gearbox, wrist bend drive unit.
3HAC025342-001: IRB 6640 axis 6 wrist gearbox, tool flange rotation drive.
3HAC020951-001: IRB 6620 axis 1 gearbox assembly, base rotation drive.
3HAC020952-001: IRB 6620 axis 2 gearbox assembly, lower arm drive unit.
3HAC020953-001: IRB 6620 axis 3 gearbox assembly, upper arm drive unit.
3HAC020954-001: IRB 6620 axis 4 wrist gearbox, inner wrist drive.
3HAC020955-001: IRB 6620 axis 5 wrist gearbox, wrist bend drive.
3HAC020956-001: IRB 6620 axis 6 wrist gearbox, tool flange rotation drive.
3HAC17484-1: Nabtesco RV-550E reducer, bare unit without housing, cross-compatible with IRB 6620/6640 axis 1–3.
3HAC14550-2: Grease kit for IRB 6620/6640 reducers, Castrol Tribol GR 100-0 PD specification.
3HAC028357-001: IRB 6640-185/2.8 axis 2 gearbox, heavy-payload variant.
3HAC028358-001: IRB 6640-205/2.75 axis 1 gearbox, maximum-payload base rotation drive.