ABB 3HAC043074-003 Reduction Gear | Replacement, Equivalent & Selection Guide | IRB 6700 Series
The ABB 3HAC043074-003 is a precision reduction gear (harmonic drive / gearbox unit) engineered for the ABB IRB 6700 series industrial robots. As a critical drivetrain component, it delivers the torque multiplication and positional accuracy demanded by heavy-payload automation cells in automotive, metal fabrication, and general manufacturing environments. Konmask.com supplies this part as OEM-equivalent stock with full traceability, serving procurement engineers and MRO teams worldwide.
Cross-reference SKUs: 3HAC043074-003 | 3HAC058399-002 | 3HAC044841-003
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (Primary) | 3HAC043074-003 |
| Cross-Reference | 3HAC058399-002 / 3HAC044841-003 |
| Component Type | Reduction Gear / Gearbox Unit |
| Compatible Robot | ABB IRB 6700 Series |
| Manufacturer | ABB Robotics |
| Country of Origin | Sweden |
| Application Axis | Axis 1 / Axis 2 / Axis 3 (confirm with robot BOM) |
| Gear Type | Precision Harmonic / Planetary Reduction |
| Lubrication | Pre-filled grease (OEM specification) |
| Mounting Interface | Flange-mount, per ABB IRB 6700 mechanical drawing |
| Operating Temperature | 0°C to +50°C (standard industrial environment) |
| Certification | CE / RoHS compliant |
Note: Always verify axis assignment and revision suffix against your robot’s serial number and ABB spare parts catalog before ordering.
Compatible Replacement & Equivalent Models
The following part numbers are confirmed cross-references or functional equivalents for the 3HAC043074-003 reduction gear. Compatibility depends on robot serial number range and axis position — consult the ABB IRB 6700 spare parts list or contact Konmask for verification.
- 3HAC058399-002 — Updated revision; direct drop-in replacement for later IRB 6700 builds
- 3HAC044841-003 — Alternate assembly variant; same gear ratio and mounting interface
- 3HAC043074-001 / -002 — Earlier revisions; functionally equivalent, check flange tolerance
If your robot’s BOM lists a different suffix, contact support@konmask.com with your robot serial number for a confirmed match.
Why Choose the Original Model
- OEM Dimensional Accuracy: Manufactured to ABB’s original tolerances — no shimming or re-alignment required during installation.
- Backlash Specification: Meets ABB’s rated arc-minute backlash spec, preserving TCP (Tool Center Point) repeatability ≤ ±0.05 mm.
- Pre-filled Lubrication: Factory-greased to ABB specification, eliminating field lubrication errors that cause premature wear.
- Warranty Compliance: Using OEM or OEM-equivalent parts maintains ABB service contract validity.
- Reduced Downtime Risk: Aftermarket gears with non-OEM tolerances can cause vibration, thermal runaway, and axis fault codes (e.g., 50071, 50072).
Typical Applications
- Automotive body welding and spot-welding cells (IRB 6700-235/2.65, IRB 6700-200/2.60)
- Heavy-payload material handling and palletizing lines
- Press-tending and machine-tending automation
- Foundry and die-casting robot arms
- Structural steel and heavy fabrication welding
- Aerospace component assembly jigs
System Compatibility
| Robot Model | Controller | Compatibility |
|---|---|---|
| IRB 6700-235/2.65 | IRC5 / OmniCore | ✓ Confirmed |
| IRB 6700-200/2.60 | IRC5 / OmniCore | ✓ Confirmed |
| IRB 6700-175/3.05 | IRC5 | ✓ Confirmed |
| IRB 6700-150/3.20 | IRC5 | ✓ Confirmed (verify axis) |
| IRB 6700-155/2.85 | IRC5 | ✓ Confirmed (verify axis) |
| IRB 6600 / IRB 6640 | IRC5 | ✗ Not compatible — different gear interface |
Selection Guide
Use this guide to confirm the correct reduction gear for your IRB 6700 robot:
- Identify Robot Serial Number: Located on the robot base nameplate (format: 6-XXXXXX).
- Confirm Axis Position: Axis 1, 2, or 3 — each may use a different gear ratio variant.
- Check ABB Spare Parts Catalog: Cross-reference your serial number range against the IRB 6700 spare parts list (document 3HAC043074).
- Verify Revision Suffix: -001, -002, -003 suffixes indicate mechanical revisions. Konmask can confirm interchangeability.
- Submit RFQ: Provide part number + robot serial number to support@konmask.com for a confirmed quote within 24 hours.
Quality Assurance & Sourcing
- Source: Procured from ABB-authorized distributors and certified MRO channels.
- Inspection: Each unit undergoes dimensional verification and packaging integrity check before dispatch.
- Traceability: Batch records and certificates of conformance available on request.
- Packaging: Original OEM packaging or equivalent anti-static, shock-protected export carton.
- Shelf Life: Stored in climate-controlled warehouse; grease integrity maintained per ABB storage guidelines.
How to Order
- Click Add to Cart or submit a Request for Quote (RFQ) via the product page.
- Email support@konmask.com with: Part Number | Robot Serial Number | Required Quantity | Delivery Location.
- Receive a confirmed availability and lead-time quote within 1 business day.
- Payment via T/T bank transfer, PayPal, or trade credit (approved accounts).
- Shipping via DHL Express, FedEx, or sea freight — worldwide delivery with full tracking.
Replacement & Compatibility FAQ
Q: Can 3HAC058399-002 directly replace 3HAC043074-003?
A: Yes, for IRB 6700 robots within the applicable serial number range. The -002 suffix is an updated revision with the same mounting interface and gear ratio. Confirm with your robot’s BOM.
Q: What axis does this reduction gear serve?
A: The 3HAC043074-003 is used on specific axes of the IRB 6700 series. Axis assignment varies by robot variant. Provide your robot serial number to Konmask for axis-specific confirmation.
Q: Is aftermarket substitution safe for this gear?
A: Not recommended. Reduction gears require sub-arc-minute backlash tolerances. Non-OEM parts risk axis fault codes, TCP drift, and accelerated wear on the motor coupling.
Q: What is the typical lead time?
A: In-stock units ship within 2–3 business days. Out-of-stock items typically have a 2–6 week lead time depending on ABB supply chain status.
Q: Do you provide installation support?
A: Konmask provides technical documentation and references ABB’s official maintenance manual (3HAC043074). On-site installation is the responsibility of a qualified ABB-certified engineer.
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