ABB 3HAC043075-001 IRB6700 IRC5 Spare Part

Overview

ABB 3HAC043075-001 Maintenance-Proven Spare Part for Factory Uptime

The ABB 3HAC043075-001 is an original reduction gear engineered for the IRB 6700 series industrial robot, one of ABB’s most widely deployed heavy-payload articulated arms in automotive, metal fabrication, foundry, and general manufacturing environments. As a precision mechanical component seated at the robot’s axis joint, the reduction gear directly governs positional accuracy, repeatability, and load-bearing performance. When this component degrades or fails, the entire robot cell is offline — making a verified, pre-tested spare unit the single most important item in any IRB 6700 maintenance inventory.

KNMKS stocks the 3HAC043075-001 as a ready-to-ship spare, fully cross-referenced to the alternate part number 3HAC043075-003. Each unit is sourced from authorized supply channels, individually inspected prior to dispatch, and covered by a support terms confirmed by quotation against manufacturing defects. Whether you are responding to an unplanned breakdown, executing a scheduled overhaul, or building a strategic spare parts buffer for a multi-robot line, this unit ships with full traceability documentation.

Spare Maintenance Table

Maintenance Planning for Continuous Operation

A reduction gear replacement on the IRB 6700 is rarely an isolated task. Experienced maintenance engineers treat this event as a structured inspection window for the entire robot axis assembly and its supporting electrical infrastructure. When the 3HAC043075-001 is being replaced, the following components should be simultaneously inspected or replaced as part of a disciplined maintenance cycle:

Servo Motor and Drive Unit: The axis servo motor paired with this reduction gear — typically an ABB MU series motor — should be checked for bearing wear, encoder integrity, and insulation resistance. If the gearbox has failed due to overload, the motor may have absorbed shock loads that shorten its remaining service life. The corresponding ABB DSQC drive module in the IRC5 controller cabinet should be verified for fault logs and thermal history.

Axis Computer and SMB Board: The ABB DSQC 633 or DSQC 662 axis computer, along with the Serial Measurement Board (SMB), manages encoder feedback for the affected joint. After a gearbox replacement, the SMB battery — part number 3HAC044075-001 — should be inspected and replaced if within 12 months of its last service, as encoder position data loss during battery failure can cause axis calibration errors post-reinstallation.

Flexible Cables and Dress Pack: The robot’s internal cable harness and dress pack routed through the arm — including the ABB 3HAC028357-001 or equivalent axis cable bundle — should be inspected for chafing, connector wear, and insulation damage. Gearbox removal requires partial disassembly of the arm, making this the optimal moment to replace any marginal cable sections before reassembly.

Brake and Brake Release Unit: The mechanical brake on the affected axis should be tested for holding torque after reinstallation. The brake release unit and its 24 VDC supply circuit should be verified to ensure safe manual brake release capability during maintenance positioning.

Grease and Lubrication Consumables: ABB specifies particular grease types for IRB 6700 gearboxes. Ensure the correct ABB-approved lubricant is on hand before beginning the replacement. Incorrect lubrication is a leading cause of premature gearbox failure and will void support terms coverage.

IRC5 Controller I/O and Safety Modules: While the robot is offline for gearbox service, the IRC5 controller cabinet should be inspected for dust accumulation, loose terminal connections on the DSQC 651 I/O module, and the status of the safety controller — particularly if the robot operates in a collaborative or guarded zone. This is also the right time to verify the condition of the 24 VDC power supply unit within the cabinet.

Site Replacement Workflow

Step 1 — Pre-Replacement Verification: Confirm the part number 3HAC043075-001 against the robot’s Bill of Materials in ABB RobotStudio or the physical nameplate on the existing gearbox. Cross-reference with 3HAC043075-003 if the original unit carries the alternate marking. Verify robot serial number and axis position to ensure correct fitment.

Step 2 — Safe Isolation: Follow ABB LOTO (Lockout/Tagout) procedures. De-energize the IRC5 controller, release stored energy in the axis brakes using the manual brake release tool, and support the robot arm mechanically before beginning disassembly. Do not rely on software brakes alone during physical maintenance.

Step 3 — Removal and Inspection: Remove the failed 3HAC043075-001 unit and inspect the mating surfaces, bearing seats, and output flange for secondary damage. If the gearbox failed catastrophically, metal debris may have contaminated adjacent components — clean thoroughly before installing the replacement unit.

Step 4 — Installation and Lubrication: Install the new 3HAC043075-001 per ABB OIM torque specifications. Apply the correct ABB-specified grease to all lubrication points. Do not over-grease — excess lubricant can cause seal failure and contaminate the motor.

Step 5 — Calibration and Recommissioning: After mechanical reassembly, perform axis calibration using ABB CalibWare or the IRC5 FlexPendant calibration routine. Verify joint position accuracy against the robot’s reference calibration data. Run a slow-speed test cycle before returning the robot to full production speed.

Step 6 — Documentation: Record the replacement in the robot’s maintenance log, including the new part serial number, installation date, technician name, and next scheduled inspection interval. Retain the KNMKS shipment traceability document with the maintenance record.

Spare Parts Support FAQ

Q: Is the 3HAC043075-001 compatible with all IRB 6700 payload variants?
A: The 3HAC043075-001 is designed for the IRB 6700 platform. However, the IRB 6700 is available in multiple payload and reach configurations (150/2.85, 200/2.60, 235/2.65, 300/2.70, 175/3.05). Always verify the axis position and robot variant against ABB’s spare parts catalog or contact KNMKS with your robot serial number for fitment confirmation before ordering.

Q: What is the difference between 3HAC043075-001 and 3HAC043075-003?
A: These are cross-referenced part numbers for the same functional component. ABB periodically revises part numbers during product lifecycle updates. Both designations refer to the same reduction gear assembly for the IRB 6700 series. KNMKS stocks both references and ships the current production-equivalent unit with full compatibility.

Q: How does KNMKS verify authenticity and condition before shipment?
A: Every 3HAC043075-001 unit undergoes a pre-shipment inspection covering dimensional checks, surface condition, and packaging integrity. Units are sourced from authorized supply channels and shipped with traceability documentation. The support terms confirmed by quotation cover manufacturing defects from the date of shipment. Units showing signs of prior installation or refurbishment are not offered as new stock.

Q: Can KNMKS support long-term or blanket purchase orders for IRB 6700 spare parts?
A: Yes. KNMKS supports scheduled procurement programs for maintenance teams managing multiple IRB 6700 robots or planning annual overhaul cycles. Contact our team to discuss reserved stock arrangements, multi-unit pricing, and coordinated delivery schedules that align with your planned maintenance windows.

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Product Identification

Brand / Ecosystem

ABB
ABB

Model / Series

IRB67003HAC043075-001 3HAC043075-003 IRB67003HAC043075-003
IRC5 Series

Product Family

Other Components

Availability Status

Available on request after model and quantity confirmation

Inquiry Type

B2B RFQ, replacement inquiry and project spare-part request

Pre-Quote Check

Exact SKU, brand, series, quantity, nameplate photos and destination country are checked before quotation

Specification & Inquiry Focus

Component range

Breakers, terminals and cabinet accessories

Common needs

Model, photo and installation requirement

Project support

Maintenance and mixed spare-part inquiry

Inquiry Support

• Mixed automation spare parts inquiry
• Cabinet component and accessory support
• Model identification from photos or labels

What to Send Us

• Brand and exact model number: ABB IRB67003HAC043075-001 3HAC043075-003 IRB67003HAC043075-003
• Quantity and required delivery time
• Application, replacement requirement or nameplate photo
• Destination country and shipping preference