The ABB 3HAC022379-001 is an original ABB Robotics spare part described by ABB as “Sealing axis 2/3.” In plain terms, it’s a sealing component used around the robot’s Axis 2 / Axis 3 mechanical area—a place where you really don’t want grease to escape or contamination to get invited in.
On articulated industrial robots, the axis interfaces and gearbox-adjacent regions see a mix of motion, vibration, and long duty cycles. Seals in these zones help maintain the internal environment that the reducer/gearbox and adjacent mechanical assemblies expect: stable lubrication, controlled ingress protection, and predictable wear behavior. When a seal is compromised, the failure mode is rarely “cute.” It’s usually some combination of grease leakage, accelerated wear, unexpected maintenance intervals, and ultimately downtime that costs more than the spare part ever did.
Where it’s used (documented reference)
ABB’s documentation shows 3HAC022379-001 listed as “Sealing ax.2/3” in the Product manual, spare parts – IRB 660, meaning it is a recognized spare part in that robot’s parts structure. ABB’s library materials also reference this spare part in the context of gearbox / axes 2–3, and include replacement guidance (for example, replace if damaged / always replace depending on the procedure and context).
That matters because it anchors this part number to a real maintenance ecosystem: it is not a generic seal described by third parties; it’s an ABB-identified component in ABB robot documentation.
What the part does (practical function)
A seal in the Axis 2/3 region typically supports several goals:
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Lubrication retention: helps keep grease where it belongs, reducing leakage and keeping internal lubrication consistent over time.
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Contamination control: reduces ingress of dust, splash, and process contaminants that can shorten reducer life or degrade mechanical performance.
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Maintenance stability: provides a predictable wear item that can be inspected and replaced as part of scheduled service rather than after a surprise failure.
Because robots are often deployed in environments that range from “clean assembly” to “foundry-adjacent chaos,” sealing integrity is not just about neatness—it’s about protecting expensive mechanical assemblies and keeping the robot’s motion repeatable.
Key product information (summary table)
| Item | Details |
|---|---|
| Manufacturer | ABB Robotics |
| Part Number | 3HAC022379-001 |
| ABB Description | Sealing axis 2/3 |
| Category | Robot spare part (sealing component for Axis 2/3 area) |
| Documented reference robot | Listed in IRB 660 spare parts manual |
| Related maintenance context | Mentioned in ABB library materials around gearbox/axes 2–3 and replacement guidance |
| Typical reasons to replace | Damage, wear, leakage, contamination exposure, or during relevant disassembly/service work |
| Important note | Confirm exact fitment by the robot’s spare parts list / service documentation for your specific serial/configuration |
Installation and maintenance notes (what experienced maintenance teams care about)
1) Replace it for the right reason, at the right time
Seals are cheap compared with reducers. If service documentation indicates replacement during a given procedure, follow that logic—even if the old seal “looks okay.” ABB’s own library guidance around this part includes replacement-oriented notes in the gearbox/axes context.
2) Don’t improvise with “close enough” parts
A seal that is dimensionally close but materially wrong can fail early (hardening, swelling, loss of elasticity) depending on lubricant chemistry and temperature profile. With robot axes, failure can be gradual and invisible until the lubricant path or contamination path becomes significant.
3) Counterfeit avoidance (yes, it’s a thing)
Robot spares are a classic target for gray-market relabeling because the parts are small, high-margin, and downtime-sensitive. Practical checks include:
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Verify the packaging and labeling consistency you normally see from ABB supply chains.
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Cross-check the part number against the robot’s official spare parts documentation for that model/config.
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If you’re buying from a broker, demand traceability (photos, labels, batch info where applicable).
Procurement guidance (for buyers who hate surprises)
When sourcing 3HAC022379-001, a clean purchasing description helps avoid mis-shipments:
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“ABB Robotics spare part 3HAC022379-001, Sealing axis 2/3, for ABB IRB 660 (verify by manual/serial).”
Also: if your maintenance team is opening the Axis 2/3 area, consider confirming whether other associated consumables (fasteners, washers, lubrication materials) are specified in the same exploded view/parts list section, since ABB spare parts manuals often group these items together.
Why this part is “small but important”
A robot’s performance is a chain: motors, feedback, reducers, structural stiffness, and the quietly unglamorous parts like seals and gaskets. 3HAC022379-001 sits firmly in the “quietly unglamorous” category—until it fails, at which point it becomes extremely interesting to everyone involved.
