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ABB 3HAC044361-003 RV Reduction Gear for IRB 4600 Axis 2

Product Condition New original or used original. Please confirm the condition with us before ordering.
Shipping Ships from Shanghai, China. Typical handling and delivery: 3-5 working days after order confirmation. Secure crated export packaging for the 45 kg unit. Worldwide delivery by DHL / FedEx / UPS.
Buyer Benefits Genuine ABB 3HAC044361-003 RV (Rotational Vector) reduction gear for the Axis 2 (lower-arm) joint of ABB IRB 4600 industrial robots. Each unit is inspected before shipment; condition (new or used original) is confirmed with you before ordering. The precision cycloidal RV structure delivers very low backlash and high rigidity for accurate, repeatable Axis 2 motion. Because reducer variants differ by robot model and axis, please confirm your robot type, serial number and axis requirement with us before purchase. This is a heavy 45 kg mechanical unit requiring secure crated freight. Quote-based service — send your inquiry with robot model, serial and axis.
Item Location Shanghai, China (stock and lead time confirmed per inquiry).
Payment PayPal / T/T / Alibaba Trade Assurance.
  • Description
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RV Reduction Gear for ABB IRB 4600 Axis 2

Specifications

Part Number 3HAC044361-003
Product Type RV (Rotational Vector) Reduction Gear
Robot Model ABB IRB 4600 series
Application Axis Axis 2 (second axis / lower-arm joint)
Gear Structure Cycloidal pin-wheel (RV) precision reducer; very low backlash, high rigidity
Reduction Ratio Not confirmed (171 cited by one distributor; confirm per ABB catalog)
Net Weight 45 kg (consistent across multiple distributors)
Dimensions 323 × 323 × 150 mm (consistent across multiple distributors)
Country of Origin Sweden (multiple distributors)
Customs Tariff Number Not confirmed (8537101190 per some sources; 84834029 per another — conflict)
Condition New original or used original. Please confirm the condition with us before ordering.

Industrial Applications

  • ABB IRB 4600 spot welding, material handling and machine tending.
  • Automotive body welding and heavy material handling.
  • Arc welding, assembly and dispensing cells.
  • Foundry grinding, deburring and polishing.
  • Laser cutting and trimming with strict edge tolerances.
  • Pick-and-place and palletizing operations.

Design Purpose

This RV reduction gear converts the high-speed, low-torque output of the Axis-2 servo motor into low-speed, high-torque motion for the robot arm. It supports the arm weight and cantilever load at the second axis while maintaining repeatability and path accuracy through its very low backlash and high rigidity, which is essential for precise, smooth Axis-2 articulation.

Safety & Handling Notice
  • Power down (LOTO) and heavy-unit handling: Switch off and isolate the robot before service. This is a 45 kg unit — use proper lifting gear, secure the arm, and follow safe manual-handling practice to avoid injury.
  • Confirm robot model, axis and serial: Reducer variants differ by robot model and axis. Confirm the IRB 4600 type, serial number and Axis-2 requirement with us before purchase and before fitting.
  • Backlash, alignment and seating: Verify backlash and seating during installation; use torque-specified fasteners and genuine O-rings to ensure proper alignment within the robot body flange interfaces.
  • Lubrication and seals: Check lubrication level and seal condition; use the specified grease and avoid contamination during assembly.
  • Post-install homing and accuracy check: After fitting, perform Axis-2 homing and a repeatability / accuracy verification per the ABB service procedure before returning the robot to production.
  • Visual inspection: Inspect for cracks, seal leakage, corrosion or damaged mounting faces before and after installation; replace the unit if any defect is found.

Common Failure Modes

  • Increased backlash / joint clearance from long-term wear.
  • Abnormal noise or vibration at Axis 2.
  • Lubricant leakage or seal failure.
  • Overload fatigue or cracking from impact loads.
  • Misalignment or incorrect torque causing premature failure.

Why Choose Us

  • Genuine ABB 3HAC044361-003 sourced through trusted supply channels and inspected before shipment.
  • We confirm robot model, serial number and axis to avoid variant mismatch.
  • Quote-based service — condition (new or used original) is confirmed with you before ordering. No stock claims.
  • Experienced handling of ABB robot spare parts, with crated-freight guidance for this heavy 45 kg unit.
  • Support for matching this gear with related IRB 4600 and Axis-2 drive parts.

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