OEM Aluminum CNC Turned and Milled Parts Supplier
Overview
XCM CNC provides build-to-print OEM aluminum turned and milled parts for non-standard structures that combine turned diameters, milled holes and slots, multi-face assembly datums, and anodizing requirements.
Before quoting, we review thin walls, deep grooves, heat transfer surfaces, and coating allowance risks through DFM, then connect sample approval to batch machining. Aluminum turn-mill parts are commonly used in heat sink housings, automation brackets, and optical communication modules that require low weight and reliable assembly accuracy. XCM CNC is certified to ISO 9001, ISO 13485, IATF 16949, and GJB9001C, with MOQ from 1 piece.
Key Capabilities
Machining Parameters and Tolerances
- Materials: 6061-T6/T651, 7075-T6/T651, 5052-H32, 6063-T5, with temper and stress condition confirmed by drawing
- Tolerance: +/-0.003 mm (+/-0.00012 inch), IT5 or IT6 accuracy, +/-0.01 mm shaft and bore fits, with h6 and H7 available
- Surface Finish: Ra 3.2 um milled, Ra 1.6 um precision milled, Ra 0.8 um turned or bored, Ra 0.4 um ground, Ra 0.2 um polished
- GD&T: Flatness 0.02 mm, parallelism 0.03 mm/1030 mm, perpendicularity 0.02 mm/1000 mm, position 0.015 mm, concentricity 0.012 mm
- Max Size: Milling 3000 x 1600 x 1400 mm, turning diameter 1200 x 2500 mm
- Surface Treatment: Clear anodizing 8-15 um, hard anodizing 25-60 um, bead blasting 80#-220#, brushing, powder coating, with masking and allowance control available
- Thread: Internal M1.4-M220, external M2.0-M220, depth 4xD, NPT/BSP/G/PT, with go and no-go gauge inspection
- OEM Documentation: CMM report, FAI, material certificate, coating thickness report, and dimensional inspection in the customer format
Assembly Fit Tolerance for OEM Custom Parts
Assembly fit accuracy directly affects end-product function. Shaft diameters can be controlled to h6 (+/-0.005 mm), mating bores can follow H7 (+/-0.006 mm), and +/-0.003 mm fit surfaces can be reviewed for specific critical features. XCM CNC machines to the fit class defined on the drawing, and coaxiality of 0.012 mm with runout of 0.01 mm can be controlled in one setup.
Multi-Process Aluminum Machining for Complex OEM Components
OEM aluminum parts often require milling, turning, boring, reaming, tapping, and surface treatment in one route. Three-axis milling travel up to 3000 x 1600 x 1400 mm covers large housings, while five-axis capacity up to 800 x 600 x 900 mm supports multi-face assembly structures. Turning up to diameter 1200 mm and length 2500 mm fits shaft and flange type aluminum parts. Datum transfer and tolerance stack-up between operations should be confirmed during drawing review.
GD&T Control for Precision Aluminum Assemblies
For OEM assemblies, geometric tolerances are often more critical than simple size tolerances. Flatness of 0.02 mm suits sealing faces and mounting datums, perpendicularity of 0.02 mm/1000 mm supports multi-face positioning, and position tolerance of 0.015 mm fits hole patterns and dowel holes. GD&T callouts are handled to ISO 1101 or ASME Y14.5, with inspection method and datum build sequence confirmed during the order stage.
Inspection Report Package for Aluminum Part Delivery
OEM customers often need inspection reports with delivery, and the format and coverage are confirmed by order. CMM reports can include position, flatness, and profile data, while FAI reports can follow the customer template. Material certificates, anodizing thickness reports, and salt spray reports are supplied when required, and 100 percent inspection scope for critical dimensions is defined by the drawing.
Specifications
| Product Name | OEM Aluminum CNC Turned and Milled Parts |
|---|---|
| Manufacturer | XCM CNC |
| Factory Location | Shenzhen, Guangdong, China |
| Quality System | ISO 9001, ISO 13485, IATF 16949, GJB9001C |
| Machining Process | CNC turning, CNC milling, turn-mill machining |
| Material | Aluminum |
| Material Grade | 6061-T6, 7075-T6, 5052 by drawing requirement |
| Precision Tolerance | +/-0.003 mm for selected small precision features after review |
| Surface Roughness | Ra 1.6 um precision milled surfaces, Ra 0.8 um turned or critical bore surfaces by requirement |
| Surface Treatment | Clear anodizing, hard anodizing 25-60 um, conductive conversion coating, bead blasting |
| Inspection | Dimensional inspection, FAI, CMM for critical datum features by order requirement |
| Application | OEM heat sink housings, automation brackets, RF cavities, optical module housings |
| Key Features | Turned diameters, milled slots, multi-side hole patterns, thin walls, anodizing allowance |
| Critical QC Requirements | Datum alignment, burr control, sample approval, anodized critical dimension recheck |
| Batch Range | Prototype to low-volume and repeat batches by drawing review |
| MOQ | 1 Piece |
| Typical Lead Time | 10-15 business days after drawing review |
| Drawing Formats | STEP, IGS, DWG, PDF, X_T |
| Critical Tolerance Control | Anodizing allowance and datum transfer reviewed before machining |
Applications
Electronic Heat Sink Housings and RF Cavities
Typical Parts: Heat sink housing, RF cavity
Heat sink housings and RF cavities require accurate heat transfer paths and internal cavity dimensions, and aluminum is a common material for both. When machining cooling channels, thin-wall cavities, and mounting holes to the customer drawing, the DFM stage can evaluate fin deformation and the effect of anodizing thickness on cavity fit in advance. Process parameters can then be adjusted after sample approval to reduce the risk of cracked fin roots or cavity distortion in batch production.
Lightweight Motion Brackets for Industrial Automation
Typical Parts: Sensor bracket, linear module slider
Motion components are sensitive to weight, and aluminum helps reduce inertia and improve response speed. A combined turning and milling route can cover bushings, mounting faces, and multi-face hole patterns. Sample parts can first verify assembly interference, then design changes can be fed back into datum and chamfer details. Automation brackets often go through multiple revisions, so clear datum planning helps later updates move faster.
Optical Communication Housings and Conductive Oxide Structures
Typical Parts: Optical module housing, connector aluminum shell
Optical communication housings often need a balance of low weight, heat dissipation, and shielding. Aluminum parts can work with conductive conversion coating or anodizing to match different assembly needs. During build-to-print production, hole pattern versions, contact face protection, and coating requirements should be confirmed early to avoid assembly deviation after small design changes.
Custom Appearance Housings for Consumer Electronics
Typical Parts: Speaker aluminum enclosure, camera accessory housing
Aluminum suits consumer electronics structural parts that need tactile appearance, low weight, and localized heat dissipation. During drawing review, bead blasting grade, anodizing color, and protection for critical mating faces can be defined first, then sample parts can confirm feel, assembly, and visual grade before release to production.
Why Choose Us
Certified Quality Systems and Imported Equipment
XCM CNC is certified to ISO 9001, ISO 13485, IATF 16949, and GJB9001C, covering quality management requirements for medical, automotive, and military projects. Production uses DMG, Mazak, Matsuura, Brother, and other machining centers, supported by Hexagon CMM and 2.5D vision inspection equipment.
Machining Range from Micro Connectors to Large Structures
XCM CNC covers parts from miniature connectors and sensor housings to large structural components. Three-axis milling travel reaches 3000 x 1600 x 1400 mm, and turning capacity reaches diameter 1250 mm. Aluminum parts can range from small precision connectors to mechanical assemblies longer than 2 meters.
Fast Quotation Preparation for Aluminum Turn-Mill Parts
During inquiry review, we first verify STEP, DWG, PDF dimensioned drawings, material grades, and critical assembly requirements, then list the key communication points for OEM aluminum turn-mill parts at one time. Thin walls, hole patterns, cosmetic faces, and anodizing requirements are included in the quotation review to reduce repeated clarification.
Sample-to-Batch Delivery Transition
XCM CNC supports sample builds to verify assembly and post-treatment results, then connects directly to batch scheduling after approval. Process parameters, inspection records, and surface treatment plans from the sample stage are retained so batch production does not need to start over.
Confidential Drawing and File Management
OEM aluminum parts often involve unreleased structures, hole pattern versions, and customer assembly information, so NDA support is available when required. Drawings, revision records, and inspection requirements are managed through the project communication flow to avoid mixing different versions.
Traceable Response to Engineering Changes
When holes, chamfers, datums, or cosmetic grades change on aluminum turn-mill parts, we first confirm the impact scope, then update the machining and inspection requirements. Each change is converted into executable process documents and inspection plans, with records kept for traceability.
Batch Delivery and Protective Packaging
Anodized aluminum surfaces are vulnerable to dents and scratches, so batch deliveries use isolated packaging or custom trays according to part structure. Packaging can follow the customer instruction or be recommended from the required cosmetic grade, and outbound photos can be archived before shipment.
FAQ
What drawing files do you need for custom aluminum CNC turned and milled parts?
We usually need STEP, IGES, STP, DWG, or a dimensioned PDF together with material, critical tolerances, quantity, and application notes. If the part includes turned diameters, milled slots, thin walls, or anodizing requirements, datums and post-treatment expectations should also be confirmed before quotation.
What is the typical lead time for aluminum OEM sample and batch orders?
Sample parts are typically 7-12 working days including anodizing, while batch lead time is evaluated from quantity and process complexity. If the part needs hard anodizing or multiple setups, lead time increases accordingly and is confirmed by order.
How do you handle repeat batch orders for aluminum turned and milled parts?
After the first sample is approved, process parameters, tool paths, and inspection plans are archived. Repeat batches can then reuse that record to reduce setup time. If the drawing revision changes, we confirm the changed points again before production scheduling.
Should I choose 6061 or 7075 for a custom aluminum machined part?
6061 is usually the better starting point when you need balanced machining efficiency, heat transfer, and anodized appearance, while 7075 should be reviewed when higher strength is clearly required. Final selection should be confirmed from load, weight, surface treatment, and cost targets.
What inspection reports can you provide for OEM aluminum parts?
Standard orders include dimensional inspection reports, and critical features can be reported with CMM data or FAI documents. If the customer requires a specific inspection scope or report format, that can be defined and executed by order.
Can you keep OEM aluminum part drawings confidential?
Yes. NDA support is available for drawings, samples, revision records, and project file management. Confidentiality requirements should be defined during inquiry or before order placement so they can be applied to internal communication and supplier coordination.
Request a CNC Machining Quote from XCM CNC
Send us your drawings. Our team will review the file and reply with a machining quote. MOQ: 1 piece, with competitive low-cost pricing.
Email: [email protected] | WhatsApp: +8618638951317
