ABB IRB 4600 Gearbox Modules 3HAC028837-008 / 3HAC028837-006

Technical Dossier

Product Details And Specifications

ABB IRB 4600 Series: Comprehensive Gearbox Module Range and Technical Overview

The Evolution of IRB 4600 Gearbox Architecture

The IRB 4600 platform was introduced by ABB Robotics (Sweden) in the early 2010s as a successor to the IRB 4400 series, targeting a payload range of 20–60 kg with a reach envelope of 2.05–2.55 m. The gearbox architecture across the IRB 4600 family uses sealed, grease-lubricated reduction units with integrated output flanges, designed for minimal field maintenance. Early production units (pre-2015) used gearbox assemblies with part suffix -001 through -004; revised assemblies introduced from 2015 onward carry suffixes -006, -007, and -008, reflecting updated sealing compounds, revised bearing preload specifications, and compatibility with IRC5 controller firmware revisions. The -008 revision (3HAC028837-008) is the current production standard and is backward-compatible with earlier IRB 4600 mechanical variants. Procurement teams sourcing replacement units must verify the axis designation, gear ratio (i=125 for axis 1), and flange pattern (FP = flat pattern) to avoid fitment errors. Cross-referencing with the robot's serial number and mechanical revision label is mandatory before ordering.

IRB 4600 Full Catalog & Functionalities (SKU List)

The following SKUs represent the primary gearbox, motor, and mechanical spare part range for the ABB IRB 4600 robot family. All units listed are confirmed part numbers within the ABB 3HAC spare parts catalog.

Axis Gearbox Units:

• 3HAC028837-008: Axis-1 gearbox assembly, TS245RHS, i=125, flat flange pattern — current production revision
• 3HAC028837-006: Axis-1 gearbox assembly, TS245RHS, i=125 — prior production revision, functionally equivalent to -008
• 3HAC028837-007: Axis-1 gearbox assembly, intermediate revision, compatible with IRB 4600-20/2.50 and 4600-40/2.55
• 3HAC029157-001: Axis-2 gearbox assembly, IRB 4600 series, sealed grease-lubricated unit
• 3HAC029158-001: Axis-3 gearbox assembly, IRB 4600 series, compact reduction unit
• 3HAC029159-001: Axis-4 gearbox assembly, wrist section, IRB 4600
• 3HAC029160-001: Axis-5 gearbox assembly, wrist pitch reduction, IRB 4600
• 3HAC029161-001: Axis-6 gearbox assembly, wrist roll reduction, IRB 4600

Motor Units (Axis-Matched):

• 3HAC031683-001: Axis-1 servo motor, IRB 4600, compatible with 3HAC028837-008 gearbox
• 3HAC031684-001: Axis-2 servo motor, IRB 4600 series
• 3HAC031685-001: Axis-3 servo motor, IRB 4600 series
• 3HAC031686-001: Axis-4 servo motor, wrist section, IRB 4600

Mechanical & Structural Spares:

• 3HAC028838-001: Axis-1 output flange, IRB 4600, flat pattern (FP)
• 3HAC028839-001: Axis-1 bearing kit, gearbox input side, IRB 4600
• 3HAC028840-001: Axis-1 seal kit, gearbox output, IRB 4600 — recommended replacement at each gearbox R&R
• 3HAC028841-001: Gearbox grease kit, Optimol Longtime PD2, 400g — OEM-specified lubricant for IRB 4600 axis gearboxes
• 3HAC029162-001: Lower arm assembly, IRB 4600-20/2.50, includes axis-2/3 interface brackets
• 3HAC029163-001: Upper arm assembly, IRB 4600 series, wrist interface included
• 3HAC029164-001: Balancing device assembly, IRB 4600-40/2.55 and 4600-60/2.05 variants

Quality Control for the IRB 4600 Gearbox Range

Gearbox assemblies for the IRB 4600 series undergo the following verification steps at DriveKNMS before dispatch:

• Visual and dimensional inspection: Output flange runout, input shaft condition, housing integrity, and seal surface condition are checked against ABB mechanical tolerances.
• Backlash measurement: Rotational backlash at the output flange is measured and recorded. Units exceeding ABB's published tolerance for the relevant axis are rejected.
• Lubrication verification: Grease fill level and type are confirmed. Units with unknown lubrication history are purged and refilled with OEM-specified Optimol Longtime PD2.
• Revision marking verification: Part number suffix and date code are cross-referenced against ABB's spare parts database to confirm revision compatibility with the customer's robot serial number range.
• Packaging: Units are packed in anti-static foam with desiccant, suitable for air freight (DHL/FedEx) or sea freight consolidation.

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.