Overview
XCM CNC is a China copper CNC machining factory serving conductive and thermal-management projects, working under ISO 9001 and IATF 16949 quality systems with equipment such as Mazak and Brother machines.
MOQ can start from 1 piece and standard lead time is commonly reviewed in the 10-15 day range. The factory can organize terminals, copper base plates, busbar connectors, and heat sink parts around grades such as C101, C102, and C110, while coordinating material certificates, surface-treatment reports, anti-oxidation packaging, and key-dimension reinspection for repeat export supply.
Key Capabilities
Machining Parameters and Tolerances
- Materials: C101 (oxygen-free copper), C102 (oxygen-free copper), C110 (electrolytic tough pitch copper)
- Tolerance: +/-0.003 mm (+/-0.00012 inch), IT5 or IT6 accuracy, +/-0.01 mm shaft/bore fits; h6/H7 available
- Surface Finish: Ra 3.2 um milled faces, Ra 1.6 um contact surfaces, Ra 0.8 um turned OD, Ra 0.4 um ground datum faces
- GD&T: Coaxiality 0.012 mm, runout 0.01 mm, flatness 0.02 mm, position 0.015 mm, cylindricity 0.011 mm
- Max Size: 3-axis milling travel 3000 x 1600 x 1400 mm; turning diameter 1250 x length 2000 mm
- Surface Treatment: Anti-oxidation protection, nickel plating, tin plating, passivation by order review
- Thread: Internal M1.4-M220, external M2.0-M220, depth 4xD; NPT / BSP / G / PT pipe threads
- Batch Range: 1 piece to repeat production; standard lead time 10-15 days
Large-Format Machining for Heat Sink Bases and Structural Plates
Large copper heat sink bases and base plates often exceed 300 x 300 mm and place more pressure on travel range and fixturing stability. Milling travel up to 3000 x 1600 x 1400 mm can cover roughing and finishing on large copper plates, with flatness controlled around 0.02 mm after the route is stabilized. Residual stress and thermal distortion are both reviewed before the batch starts, and the first article confirms contact-face condition.
Busbar and Terminal Thread, Keyway, and Hole-Pattern Machining
Busbars and terminal parts often include mounting-hole patterns, threaded holes, and keyway-style features. Internal threads can start from M1.4, external threads from M2.0, and thread depth can reach 4xD. Keyways can start from 1.0 mm width and grouped-hole position can reach around 0.015 mm, which suits repeat supply of busbar connectors and terminal blocks.
Batch Traceability with Material Certificates and Inspection Records
For repeat copper supply, continuity of material-batch tracking and inspection records directly affects incoming inspection efficiency on the customer side. XCM CNC can provide material certificates, FAI reports, and CMM dimensional reports, with sampling or 100 percent inspection scope defined by order and output in the customer format.
Anti-Oxidation Packing and Export Shipping for Conductive Parts
Copper conductive parts can oxidize or discolor in storage and transport, which affects later assembly. XCM CNC uses layered protection that can include foam separation, anti-oxidation film, and carton or wooden-case packaging. DHL, FedEx, UPS, and sea freight can all be supported, while plating or passivation is confirmed before batch release and the packaging route is validated with the first article.
Specifications
| Product Name | China Copper CNC Machined Parts |
|---|---|
| Manufacturer | XCM CNC |
| Factory Location | Shenzhen, Guangdong, China |
| Quality System | ISO 9001, ISO 13485, IATF 16949, GJB9001C |
| Machining Process | CNC turning, CNC milling, drilling, tapping, deburring |
| Material | Copper |
| Material Grade | C101, C102, C110 with grade and purity requirement confirmed per order |
| Tolerance | +/-0.03 mm standard CNC tolerance, critical dimensions by drawing review |
| Surface Roughness | Ra 3.2 um general machined surfaces, Ra 1.6 um contact surfaces by requirement |
| Surface Treatment | Anti-oxidation protection, plating, or polishing by order review |
| Max Part Size | 3-axis travel 3000 x 1600 x 1400 mm, actual part size depends on fixturing |
| Inspection | Dimensional inspection, FAI, material certificate, and surface treatment report by order requirement |
| Application | Busbars, terminals, heat sink bases, copper base plates, and RF conductive structures |
| Key Features | Material purity, critical contact faces, anti-oxidation packing, large-flat fixturing, and report support |
| Critical QC Requirements | Material certificate, surface treatment report, key-dimension sampling or full inspection scope, and packing protection |
| Batch Range | 1 piece MOQ to repeat production batches, standard lead time 10-15 days |
| MOQ | 1 Piece |
| Typical Lead Time | 10-15 business days after drawing review |
| Drawing Formats | STEP, IGS, DWG, PDF, X_T |
| Material Certificate | Material certificate by order requirement |
Applications
Busbars, Terminals, and Electrode Blocks for Power Distribution
Typical Parts: Busbar, power terminal, electrode block
Factory supply of copper busbars and terminals depends on grade confirmation, material certificates, hole-pattern accuracy, and anti-oxidation protection. Mounting-hole position can be controlled around 0.015 mm, thread sizes can cover M1.4-M220, and export packing can be aligned with the same lot records.
Conductive Connectors and Charging Interfaces for New Energy Programs
Typical Parts: Conductive terminal, busbar connector, charging interface part
Repeat supply of new-energy conductive connectors depends on stable contact-face size, mounting-hole fit, and material-batch control. Final application requirements still follow the customer drawing and industry rules, while delivery focuses on anti-oxidation packing and consistent inspection records.
Thermal Bases, Copper Plates, and Heat-Spreader Components
Typical Parts: Copper base plate, thermal base, thermal conductive block
Thermal copper parts place strong demands on large-flat consistency and batch distortion control. Flatness can be reviewed around 0.02 mm, while large-area fixturing and material condition need to be checked first. Export packing then protects the contact faces against oxidation and handling marks.
RF Connectors and Waveguide Structures for Communication Equipment
Typical Parts: RF connector part, waveguide part, conductive cavity
Copper suits communication structures that need controlled contact faces and conductive cavities, and supply planning focuses on grade confirmation, reinspection of key faces, and packaging protection. Profile can be reviewed around 0.02 mm, while RF performance metrics themselves remain defined by the customer rather than treated as a default factory claim.
Why Choose Us
Certified Systems and Equipment Coverage
The factory works under ISO 9001, ISO 13485, IATF 16949, and GJB9001C quality systems and uses DMG, Mazak, Matsuura, Brother, and other machines to cover pure copper, oxygen-free copper, and conductive structural parts. Drawing review can confirm contact faces, flatness, and anti-oxidation requirements in one flow.
Broad Size Coverage
The machining range covers both connector-scale parts and larger copper base plates or structures. Three-axis travel reaches 3000 x 1600 x 1400 mm and turning diameter reaches 1250 mm, while the final route still depends on fixturing, purity level, and surface-state requirements.
Tiered Equipment Strategy for Cost and Quality
XCM CNC uses a mix of mainland China, Taiwan, Japan, and Europe or US sourced CNC machines. Lower-tolerance copper operations can run on domestic or Taiwan equipment, while tighter contact faces and fit features can move to imported machines such as DMG or Mazak.
Stable Scheduling for Conductive Parts
Conductive parts, thermal bases, and copper plates can be scheduled around rough machining, finish machining, anti-oxidation treatment, reinspection, and packaging as one chain. On repeat orders, material batch and process parameters stay locked to the first approved route so later deliveries can follow the same rhythm.
Isolated Export Packing for Copper Deliveries
Separated packaging, anti-oxidation protection, and masking on critical faces can be planned as one export action. DHL, FedEx, UPS, and sea freight are all supported, and the same packing method that passes the first-article review can be reused on later lots.
FAQ
What is the MOQ and lead time for copper CNC parts from your factory?
MOQ starts from 1 piece and standard lead time is often reviewed in the 10-15 day range depending on part complexity and quantity. Sample lead time is commonly 3-7 days, and repeat orders can often follow the same cycle once material and process route are unchanged.
Why is pure copper harder to machine than brass?
Pure copper is more likely to smear on the cutting edge, distort under clamping, and mark sensitive contact faces, so the process route is usually more conservative than brass. Extra stock and staged cutting are reviewed according to part size, flat faces, and hole requirements.
How do you manage batch consistency for repeat copper part orders?
After the first lot is approved, material grade, incoming batch, and machining parameters are locked, then the same route is reused on later lots. Sampling or full-inspection scope for key dimensions is written into the order and the related records are archived for traceability.
When should oxygen-free copper be used for CNC parts?
Oxygen-free copper is more often reviewed when conductivity, thermal transfer, weldability, or RF-related structure demands are tighter. For general conductive or thermal parts, it still needs to be compared with C110 against the drawing and project conditions before a higher-purity grade is chosen.
Can your factory provide copper material certificates and surface-treatment reports by order?
Yes. Material certificates such as material proof or SGS environmental reports can be supplied by order, and plating or passivation reports can be coordinated when surface treatment is required. Report type and reinspection scope are confirmed together with the drawing before ordering.
How do you package copper busbars, terminals, or heat-sink bases for export shipping?
Conductive and thermal parts can use foam separation, anti-oxidation film, and carton or wooden-case packaging, with critical contact faces protected separately. DHL, FedEx, UPS, and sea freight are all available, and the exact packing layers are adjusted by part size and appearance requirement.
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
