Robotic Joint Drive Solution – ABB 3HNM11221-1 3HAC028705-003 | IRB 2600 Series
Where This Product Is Used
The ABB 3HNM11221-1 (cross-reference: IRB26003HAC028705-003 / 3HAC028705-003) is a precision reduction gear designed for the ABB IRB 2600 series industrial robot. This component is the mechanical heart of the robot’s joint axis drive train — without it, the robot arm cannot achieve the precise angular positioning required for repeatable, high-accuracy tasks.
This reduction gear is found in demanding production environments across automotive body shops, electronics assembly lines, metal fabrication cells, and food-grade packaging systems. Wherever an IRB 2600 robot is deployed for arc welding, material handling, machine tending, or pick-and-place operations, this gearbox is the critical torque-transmission element that determines path accuracy and cycle-life reliability.
Technical Specifications
- Part Number: 3HNM11221-1
- Cross Reference: IRB26003HAC028705-003 / 3HAC028705-003
- Component Type: Reduction Gear (Joint Gearbox)
- Compatible Robot Series: ABB IRB 2600
- Manufacturer: ABB Robotics
- Function: Axis joint torque reduction and precision motion transmission
- Application: Industrial 6-axis robot arm joint drive
- Condition Available: New OEM / Tested Surplus / Refurbished
Note: Detailed gear ratio, rated torque, and dimensional data are available upon request. We do not publish unverified specifications.
Why Engineers Specify This Model
- OEM-Matched Precision: Designed to ABB’s exact tolerance stack-up for the IRB 2600 joint assembly — no shimming or field modification required.
- High Rigidity, Low Backlash: Maintains sub-arc-minute positional repeatability over millions of cycles, critical for welding seam tracking and assembly press-fit operations.
- Sealed Lubrication System: Factory-filled grease specification eliminates field lubrication errors that cause premature wear in harsh environments.
- Direct OEM Replacement: Drop-in compatibility with existing IRB 2600 axis housings — minimizes downtime during scheduled maintenance or emergency repair.
- Proven Field Life: Widely deployed across Tier 1 automotive suppliers and electronics contract manufacturers globally.
Complete System Bill of Materials
When replacing the reduction gear on an ABB IRB 2600, engineers typically source the following complementary parts to complete a full joint overhaul:
- Joint Motor (e.g., ABB 3HAC026733-001 / 3HAC029896-024 / 3HAC030006-001)
- Motor Pinion Assembly
- Axis Bearing Set
- Joint Seal Kit
- Gearbox Grease (ABB-specified grade)
- Axis Brake Module (if applicable)
Contact Konmask.com to request a complete BOM quote for your IRB 2600 joint rebuild project.
Compliance & Industry Standards
- Manufactured under ABB’s ISO 9001-certified production quality system
- Compatible with CE-marked IRB 2600 robot configurations
- Suitable for use in RIA R15.06 / ISO 10218-compliant robot safety cells
- Traceable to ABB OEM documentation and spare parts catalog
Quality Assurance & Sourcing
At Konmask.com, every ABB robot spare part undergoes a structured verification process before shipment:
- Part Number Verification: Physical label and engraving cross-checked against ABB spare parts database
- Visual & Dimensional Inspection: Gear teeth, housing, and mounting interfaces inspected for wear, corrosion, or impact damage
- Functional Test (Refurbished Units): Backlash measurement and rotation torque check performed on test bench
- Packaging: Anti-static, moisture-barrier packaging with desiccant for international shipping
- Documentation: Certificate of conformity and inspection report available on request
How to Source This Part
- Submit your inquiry via the “Get a Quote” button or email support@konmask.com
- Provide your robot serial number and axis location for compatibility confirmation
- Receive a formal quotation with lead time and shipping options within 24 business hours
- Confirm order — we support T/T bank transfer, PayPal, and trade assurance payment terms
- Parts shipped with full tracking; express DHL/FedEx available for urgent downtime recovery
Application-Specific FAQ
Q: Is 3HNM11221-1 the same as 3HAC028705-003?
A: Yes. 3HNM11221-1 is the original ABB part number; 3HAC028705-003 and IRB26003HAC028705-003 are cross-reference numbers used in different ABB documentation revisions. All refer to the same reduction gear assembly for the IRB 2600.
Q: Which axis of the IRB 2600 does this gearbox serve?
A: Please provide your robot’s service manual axis reference or contact us with your robot serial number — we will confirm the exact axis application before shipment.
Q: Can this gear be used on IRB 2600-12 and IRB 2600-20 variants?
A: Compatibility depends on the specific axis and payload variant. Contact our technical team with your full robot model designation for confirmation.
Q: Do you offer exchange/core return programs?
A: Yes. For refurbished units, we offer a core exchange program. Contact us for details and core credit terms.
Q: What is the typical lead time?
A: In-stock units ship within 1–3 business days. For sourced or refurbished units, lead time is typically 7–15 business days. Express options available.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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