CNC Machined Anodized Aluminum Adapter Plates

These are aluminum adapter plates that connect components with different hole patterns, such as motors to gearboxes, cameras to rigs, or rails to frames. Plates are CNC machined from 6061 aluminum with counterbores, threads and locating features, then anodized, polished, plated or painted. Tolerance is ±0.05 mm standard. They suit engineers who need quick, accurate interface parts.

Material: Aluminum
Tolerance: to ±0.005 mm
MOQ: 1 piece
Prototype lead time: 3–7 days

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Both faces machined for parallelism
Patterns checked for overlapping hole conflicts
Engraved part numbers or logos
Optional thread inserts for repeated mounting

ISO 9001 quality system, 100% critical-dimension inspection

NDA on request; your drawings are never shared

Door-to-door shipping with export documents

Item ref. 1600481477550 ·

Specifications
Process	3-axis CNC milling, drilling, tapping
Materials	Aluminum 6061-T6 (stainless steel on request)
Tolerance	±0.05 mm standard
Surface Finish	Anodizing, polishing, plating, painting, laser engraving
MOQ	1 piece
Drawing Formats	STEP, IGES, X_T, STL, DWG, DXF, PDF
Lead Time	Prototypes ~3–7 working days; production typically 10–20 working days
Inspection	First-article + 100% critical-dimension inspection; CMM report on request

Manufacturing

How we make this part

Process, material options and inspection for cnc machined anodized aluminum adapter plates.

Adapter plates are faced on both sides for parallelism, then drilled, tapped and counterbored in patterns that come from each mating component. Locating spigots or recesses are milled where one component must center on another. When patterns overlap, we check that counterbores and tapped holes do not break into each other. Edges are chamfered, and part numbers or logos can be engraved.

6061-T6 is the standard choice, light and stiff for its weight, and it anodizes evenly in black, silver or colors. Anodizing hardens the surface slightly, reducing marks from repeated mounting. For heavy loads or thermal stability, stainless or steel plates are alternatives. Threads in aluminum can be strengthened with inserts if screws will be changed often.

Hole positions are verified on CMM against both mating patterns, threads are gauged after anodizing, and parallelism is measured on a surface plate. Critical features are 100% inspected before shipment. Typical uses include motor-to-gearbox adapters, camera quick-release plates, linear rail adapters, robot tool flanges and test-bench mounting plates. Revisions are easy, since only the CNC program changes.

FAQ

Frequently asked questions

What information do you need to make an adapter plate?

Ideally a drawing or STEP file. If you do not have one, send the two mating hole patterns, thread sizes, any centering features and the plate thickness. We will produce a drawing for your approval before machining.

Will anodizing affect tapped holes in the plate?

Anodizing slightly tightens threads. We either mask tapped holes during anodizing or chase them afterward, then check each with go/no-go gauges. Specify any holes or faces that need bare metal for grounding, and we will keep them free of coating or spot-face them after finishing.

How do I get a quote for cnc machined anodized aluminum adapter plates?

Send a 3D model (STEP or IGES) and a 2D drawing with tolerances, material, finish and quantity through the quote form or by email. An engineer replies within 24 hours on business days with price, lead time and any DFM suggestions.