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High-Strength CNC Machined 7075-T6 Aluminum Robot Joints | 5 Axis CNC Machining

These precision CNC machined components are crafted from high-strength 7075-T6 aluminum and finished with a durable black anodized coating. Designed specifically for critical robotic joint applications, they offer an exceptional combination of structural integrity, wear resistance, and aesthetic appeal for advanced industrial and collaborative robot systems.

Project Overview

Project Name Intelligent Robot Joint Components
Material Aluminum 7075-T6
Processing Equipment 3-axis & 5-axis machining centers
Technology CNC milling & CNC turning
Testing Instruments CMM, Calipers, Height Gauges
Surface Treatment Black Anodizing (Type II)
Post-surface Inspection Equipment CMM, Adhesion Tester
Application Areas Industrial Robotics, Collaborative Robots (Cobots), Automation

Core Parameters

Characteristic Specification Standard
Material 7075-T6 Aluminum ASTM B209 / AMS-QQ-A-250/12
Dimensional Tolerance ±0.05mm (ISO2768-M) ISO 2768-M
Surface Finish (Anodized) Ra ≤ 1.6μm, Black Color MIL-A-8625 Type II
Tensile Strength ≥ 540 MPa ASTM B557

Design & Performance Advantages

  • Extreme Strength-to-Weight Ratio - 7075-T6 is among the strongest aluminum alloys, perfect for load-bearing robotic joints that must minimize inertia.
  • Superior Corrosion & Wear Resistance - The black anodized layer provides excellent protection against oxidation and daily abrasion in industrial environments.
  • High Precision & Consistency - CNC machining ensures every joint part meets tight tolerances for smooth assembly and reliable long-term operation.

Process Control

  • Multi-axis CNC milling for complex geometries
  • Controlled anodizing process for consistent color and thickness
  • Rigorous pre- and post-treatment cleaning to ensure coating adhesion

Quality Assurance & Reports

  • Full-dimensional inspection report (CMM Data)
  • Material certification (MTR) for 7075-T6 aluminum
  • Anodizing thickness and hardness test report
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Surface treatment

Name

Applicable Materials

Colors

Can be applied to

Black Oxide

Black Oxide

Aluminum

Black

Bead blasted, Tumbling, Chem film*

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