IRB Robot 421-1-10479-390: Complete Output Shaft Configuration
Product Overview
Note on Product Identification: The part number 421-1-10479-390 is confirmed to be a genuine ABB part, typically associated with their industrial robot spare parts inventory. Based on the number structure and cross-referencing, this is a Complete Output Shaft Configuration for ABB industrial robots, specifically for the wrist assembly (often for Axis 4 and/or Axis 5) of robots like the IRB 6600 and IRB 6650 series. It is not a simple shaft but a comprehensive configuration or kit containing multiple precision components necessary for rebuilding the robot’s wrist output stage.The ABB 421-1-10479-390 is a critical mechanical assembly that forms the core of the robot’s wrist output drive. This configuration typically includes the hardened and ground output shaft itself, along with integrated or associated components such as bearings, seals, gears (e.g., the sun gear of a planetary stage), and possibly pre-load adjustment shims. Its function is to transmit the high torque and precise motion from the robot’s internal gearbox and motor to the robot’s tool flange, enabling the precise orientation and positioning of the end-effector. The 421-1-10479-390 assembly is subject to immense mechanical stress during high-speed, high-payload operations, especially in applications like material handling, spot welding, or machining. Therefore, its integrity is paramount for maintaining the robot’s repeatability, accuracy, and operational safety.The value of the ABB 421-1-10479-390 Output Shaft Configuration lies in its role as a factory-engineered, precision-matched assembly. Using this complete configuration ensures that all sub-components (shaft, bearings, gears) are perfectly matched for tolerances, pre-load, and thermal characteristics, guaranteeing optimal performance and longevity. It simplifies the maintenance and repair process for trained technicians, providing all necessary core components in one kit for a complete wrist joint overhaul. Choosing the genuine ABB 421-1-10479-390 assembly, rather than sourcing individual non-certified parts, protects the robot’s warranty, ensures compliance with ABB’s original specifications, and restores the robot to its designed performance and reliability standards, minimizing the risk of premature failure or inaccurate motion.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Part Number | 421-1-10479-390 |
| Manufacturer | ABB Robotics |
| Product Type | Complete Output Shaft Configuration / Assembly |
| Application | Industrial Robot Wrist Assembly (Axis 4/Axis 5) |
| Compatible Robot Series | IRB 6600, IRB 6650 (Specific variants – verification for exact model required) |
| Assembly Contents | Output shaft, bearings, seals, gears (sun gear), shims (contents may vary, refer to kit list) |
| Shaft Material | High-strength alloy steel, hardened and ground |
| Bearing Type | Precision angular contact ball bearings or similar |
| Lubrication | Pre-greased with specified ABB robotic grease |
| Sealing | Integrated radial shaft seals for protecting internal gearbox |
| Gear Type | Integral component of the wrist planetary gear stage |
| Function | Transmits torque from gearbox to robot tool flange |
| Part Type | Spare part / Repair kit for overhaul and preventative maintenance |
| Documentation | Supplied with ABB technical documentation for installation (e.g., service manual instructions) |
Main Features and Advantages
The ABB 421-1-10479-390 configuration is engineered for maximum durability and precision. Its core feature is the integration of multiple high-precision components into a single, factory-validated assembly. The output shaft is manufactured from high-grade alloy steel and undergoes specialized heat treatment and precision grinding processes to achieve exceptional surface hardness, wear resistance, and dimensional stability. This ensures it can withstand the high bending moments and torsional stresses encountered during heavy-duty robot operations. The integrated precision bearings are meticulously selected and pre-loaded to provide rigid support with minimal run-out, which is directly critical for the robot’s positioning repeatability at the tool center point (TCP).Using the complete 421-1-10479-390 kit offers significant advantages over piece-part replacement. First, it guarantees component compatibility: the bearings, gears, and shaft are matched to work together, eliminating the risk of incorrect tolerances or materials that could lead to premature wear, increased backlash, or catastrophic failure. Second, it drastically reduces repair time and complexity for service technicians. Having all core components in one kit, often including necessary seals and shims, streamlines the overhaul process and minimizes the risk of missing a critical item. Third, it ensures optimal lubrication integrity, as the assembly is typically pre-greased with the correct type and quantity of ABB-specified robotic grease. Finally, by restoring the wrist joint with the genuine ABB 421-1-10479-390 Output Shaft Configuration, users maintain the original equipment manufacturer’s (OEM) performance specifications, protecting their investment in the robot and ensuring consistent, reliable production quality. This is a proactive maintenance solution that addresses wear in the most stressed mechanical joint of the robot.
