Product Details
This Aluminum CNC Machined Disc is designed for applications requiring precise hole positioning, stable rotational balance, and a clean anodized finish. Manufactured from 6082-T6 aluminum alloy in accordance with ASTM B211/B221, the part delivers an excellent combination of strength, machinability, and corrosion resistance.
Key Specifications
Material: 6082-T6 Aluminum Alloy
(ASTM B211 / ASTM B221 compliant)
Outer Diameter: Ø3.75 in
Thickness: 0.65 in
Bolt Pattern:
– 12 holes Ø0.218 in
– Equally spaced on 2.68 in PCD
Surface Finish:
Clear sulfuric acid anodizing
per MIL-A-8625 Type II, Class 1
Manufacturing Features
This disc is CNC-machined to maintain accurate concentricity across its outer diameter and bolt circle. The 12-hole pattern is precisely indexed to ensure uniform load distribution, making it suitable for rotating assemblies, fixtures, and structural couplings.
The machined surfaces have a smooth, uniform finish, and the chamfers around the holes are kept clean to ease assembly and reduce wear. After machining, the part undergoes clear Type II anodizing, providing improved corrosion resistance while preserving the natural metallic appearance.
Applications
Rotating fixtures and couplings
Lightweight mechanical assemblies
Instrumentation discs and adapters
Automation and robotics components
Custom flanges for industrial equipment
FAQ
Q: Can the bolt circle diameter or hole size be customized?
A: Yes. The PCD, hole diameter, and spacing can all be modified according to your drawing or project needs.
Q: What advantages does 6082-T6 offer over 6061-T6?
A: 6082-T6 provides higher strength and is particularly suited for structural applications while maintaining good machinability and surface finish quality.
Q: Does the anodizing add dimensional change to the part?
A: MIL-A-8625 Type II anodizing adds minimal thickness. If tight tolerances are required, machining allowances can be adjusted accordingly.
Q: Is this disc suitable for rotating assemblies?
A: Yes. The concentric machining, equispaced hole pattern, and controlled surface finish make it suitable for balanced rotational applications.
Q: Do you provide batch production for custom sizes?
A: We offer low-volume and mass-production machining with optional inspection reports, material certificates, and surface treatment documentation.
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