Surface Finish Specifications for Your Online CNC Machined Components
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In the world of online CNC machining, specifying the correct surface finish is as critical as defining dimensions and tolerances. It directly impacts the functionality, aesthetics, and cost of your parts. For businesses seeking reliable, onestop CNC machining solutions, understanding these specifications is key to ensuring part success and driving project efficiency.
cnc machining center Surface finish, measured in microns (µm) or microinches (µin), refers to the texture of a machined surface. Common specifications include:
AsMachined (Ra 3.2 µm / 125 µin): The standard finish from milling or turning, suitable for noncritical interfaces, internal components, and functional parts where cosmetics are not a priority.
Machined & Deburred: Parts are cleaned of sharp edges and tool marks for safer handling, a essential baseline for all components.
Fine Machined (Ra 1.6 µm / 63 µin): A smoother finish achieved with finer machining parameters, often required for bearing surfaces, seals, and improved wear resistance.
Polished & Buffed: Processes that enhance appearance and corrosion resistance for visible components. Electropolishing is a superior chemical method for stainless steel, removing microscopic material for a clean, hygienic surface.
Bead Blasting: A uniform matte, satin texture that improves appearance and provides a great base for painting or coating.
Anodizing (Type II or III): An electrochemical process primarily for aluminum that adds a hard, protective, and often colored oxide layer, enhancing corrosion and wear resistance.
cnc machining online Powder Coating: A durable, decorative paint finish applied electrostatically and cured under heat, available in countless colors and textures.
Why does this matter for your business? Precisely defining your surface finish requirements minimizes backandforth communication, prevents costly revisions, and accelerates lead times. It ensures your components perform as intended—whether needing low friction for moving parts, a sealed surface for fluidics, or a premium look for consumerfacing products.
As your onestop CNC machining partner, we provide the expertise to guide you through these specifications. By clearly defining your needs—function, material, assembly, and environment—we deliver components that are not just accurately machined, but optimally finished for performance, durability, and value. Let’s specify for success and build better products together.