Overview
XCM CNC is a Shenzhen zinc machining factory with ISO 9001 and IATF 16949 aligned systems, using imported machines such as DMG and Mazak together with domestic machining centers for Zamak 3, Zamak 5, and Zamak 8 follow-up machining.
The factory handles fit-surface finish machining, hole correction, and pre-finish machining before coating on die-cast parts, with MOQ from 1 piece, sample lead time of 3-7 days, and typical batch delivery in the 10-15 day range. On repeat orders, the process team reviews incoming lot condition, machine matching, and the reinspection plan before scheduling the batch.
Key Capabilities
Machining Parameters
- Materials: Zamak 3, Zamak 5, Zamak 8 by drawing review
- 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, Ra 0.8 um turned or bored
- GD&T: Coaxiality 0.012 mm, runout 0.01 mm, cylindricity 0.011 mm
- Max Size: Milling 3000 x 1600 x 1400 mm, turning diameter 1250 x 2000 mm
- Surface Treatment: Plating, powder coating, chromate finish, painting, or cosmetic prep by drawing review
- Thread: M1.4-M220, NPT, BSP, G, PT
- Batch Range: 1 piece to repeat production, standard lead time 10-15 days
Equipment Capacity for Die-Cast Finish Machining
XCM CNC can cover zinc die-cast finish machining from 3000 x 1600 x 1400 mm three-axis milling travel to diameter 1250 x 2000 mm CNC turning. Larger cast housings and covers can be roughed on larger equipment first, while fit-critical faces can move to a precision milling center when the drawing requires tighter control.
Thread and Structural Feature Machining
Zinc CNC machining supports internal threads from M1.4 and external threads up to M220, together with NPT, BSP, G, and PT standards. Die-cast parts often need secondary machining on keyways, snap-ring grooves, mounting holes, and thread features after casting, and H7 fit holes can be held where the drawing requires them.
Lot Inspection and Traceability for Repeat Orders
Zinc repeat-order inspection can use CMM verification on 0.015 mm position tolerance and 0.012 mm coaxiality for each lot. First-article reports, material files, and lot tags can be linked to specific parts by order, and the 2.5D system can support hole-pattern and outline checks on smaller zinc parts.
Surface Protection Coordination for Export Parts
Zinc export parts can prepare Ra 1.6 um mating faces and Ra 3.2 um standard surfaces before plating or coating. Plating thickness can affect fit sizes, so precision bores and mounting faces carry a planned allowance before coating, and export packing can use foam plus carton or wooden-case protection for visible surfaces.
Specifications
| Product Name | China Zinc CNC Machined Parts Factory |
|---|---|
| Manufacturer | XCM CNC |
| Factory Location | Shenzhen, China |
| Quality System | ISO 9001, ISO 13485, IATF 16949, GJB9001C |
| Machining Process | CNC machining |
| Material | Zinc |
| Material Grade | Zamak 3, Zamak 5, Zamak 8 by drawing review |
| Tolerance | +/-0.03 mm standard CNC machining tolerance |
| Precision Tolerance | +/-0.003 mm for selected critical features by drawing review |
| Surface Roughness | Ra 3.2 um milled, Ra 1.6 um precision, Ra 0.8 um turned or bored |
| Surface Treatment | Plating, powder coating, chromate finish, painting, or cosmetic prep by drawing review |
| Max Part Size | Milling 3000 x 1600 x 1400 mm / Turning diameter 1250 x 2000 mm |
| Inspection | CMM, roundness tester, height gauge, roughness tester, thread gauges |
| Application | Automotive die-cast finish machining, lock hardware details, and electronic shell components |
| Typical Application | China supply projects for zinc finish machining |
| Key Features | Die-cast follow-up machining, lot routing, finish-prep review, and repeat-order stability |
| Critical QC Requirements | Casting datum review, fit-surface inspection, deformation control, finish allowance check, and post-process reinspection |
| Batch Range | 1 piece to repeat production lots |
| MOQ | 1 piece |
| Typical Lead Time | Samples 3-7 days, repeat production 10-15 days by drawing review |
| Drawing Formats | STEP, IGS, DWG, PDF, X_T |
| Secondary Process | Deburring, tapping, cosmetic-prep machining, plating prep, and dimensional reinspection |
| Material Certificate | Material certificate by order requirements |
| Material Feature | Die-cast follow-up machining, fit-surface correction, and pre-finish machining review |
| Assembly Features | Die-cast mating faces, threaded inserts, locking features, and EMI cover interfaces by drawing review |
Applications
Automotive Die-Cast Housings and Fit Holes
Typical Parts: Door latch housing, fuel-cap retainer base, interior adjustment bracket
Automotive zinc die-cast parts often need CNC secondary machining on fit holes and mounting faces before assembly. The factory can manage lot traceability under an automotive-style quality route, hold H7 fit bores, precision mill mounting faces to Ra 1.6 um, and link batch reports to the related parts when required.
Lock Hardware Housings and Knob Seats
Typical Parts: Lock core housing, handle base, knob seat
Batch work on lock cores and handle parts needs the visible-face condition and the critical fit dimensions controlled before plating. Lock bores can be turned to Ra 0.8 um, datum faces can be precision milled to Ra 1.6 um, and the pre-plating allowance is fixed during first-article review before repeat lots move forward.
Shielding Shells and Clip Frames
Typical Parts: Filter shielding can, SFP plus metal housing, heat-sink mounting bracket
Thin-wall shielding shells and clip frames need stable fixturing and controlled deformation during follow-up machining. Structures near 0.5 mm wall thickness can use staged fixturing and low cutting parameters, while grounding faces and clip holes follow the drawing and export packing protects visible and conductive faces after machining.
Automation Covers and Small Housing Details
Typical Parts: HMI bezel, servo-drive trim ring, non-load-bearing sensor mounting flange
Small housings and covers need dimensional consistency from lot to lot. Once the first article is approved, the fixture route and toolpath can stay fixed and later batches can sample the key dimensions while insert holes and clip slots are rechecked at each lot change.
Why Choose Us
Qualified Systems and Equipment Coverage
XCM CNC runs zinc die-cast secondary machining under ISO 9001, ISO 13485, IATF 16949, and GJB9001C aligned quality systems, while using equipment from brands such as DMG, Mazak, Matsuura, and Brother for fit-surface correction and multi-face machining. For Zamak series projects, we review datum choice, pre-finish allowance, and reinspection priorities during drawing review.
Broad Size Range for Zinc Finish Machining
We support zinc finish machining from small connector-scale parts to larger housings, covers, and medium-size structural parts. Three-axis travel reaches 3000 x 1600 x 1400 mm and turning capacity reaches diameter 1250 x 2000 mm, while the final route still follows the die-cast datum, the pre-finish allowance, and the fixture method.
Tiered Equipment Strategy for Cost and Quality
XCM CNC uses CNC equipment from mainland China, Taiwan, Japan, and Europe or the US in a tiered production mix. Lower-tolerance operations can run on domestic or Taiwan machines, while higher-precision critical work moves to imported machines such as DMG and Mazak. That helps reduce cost without placing simple operations onto high-hour machines.
Coordinated Scheduling and Finishing for Zinc Parts
Zinc die-cast parts can be scheduled through datum confirmation, finish machining, pre-finish preparation, and reinspection in one planned route to reduce mixed-lot risk and rework. Plating or painting support is coordinated together with reinspection and packing, which suits batch delivery of lock hardware, housings, and shielding parts.
Traceable Batches and Export Support
Incoming die-cast lots, machining revision data, and the finishing requirement can be linked to specific parts and inspection files by order, which helps on repeat and export programs. NDA support is also available before the project review starts when drawings are sensitive.
FAQ
Why do zinc die-cast parts still need CNC finish machining?
Die-cast hole tolerance and fit-surface roughness are usually not enough for final assembly, so CNC finish machining is used to correct those features. Common follow-up work includes fit-bore boring, mounting-face milling, and thread tapping, with the exact scope reviewed from the drawing.
What is the typical lead time for zinc CNC finish-machined parts from your factory?
Sample lead time is usually 3-7 days, while batch lead time is often 10-15 days depending on geometry complexity and quantity. If the route also includes plating, chromate finish, or painting support, that timing is added to the production schedule before release.
What inspection reports can your factory provide for zinc machined parts?
By order, the factory can provide CMM dimensional reports, FAI reports, and material files. Inspection can use CMM support and 2.5D measurement for the relevant features, and the report format can follow the customer template when needed.
What payment terms and shipping options does your factory offer for zinc CNC parts?
Payment can be arranged by T/T, PayPal, or Western Union. Shipping can use DHL, FedEx, UPS, or sea freight, and the packing route can use foam plus carton or wooden cases depending on the part size and appearance requirement. NDA support is available for confidential projects.
How do you organize zinc finish machining, surface treatment, and export packing by order?
Zinc orders can keep follow-up machining, surface treatment, reinspection, and appearance protection inside one delivery route. The packing level is selected from part size, shipping method, and appearance requirements, and conductive or fit-critical faces can be isolated separately before export.
Can your factory keep zinc die-cast lots consistent across machining and plating steps?
Yes. Zinc parts can be scheduled by lot, revision, and surface-treatment plan so mixed-condition batches are less likely to create rework. Each incoming lot can first be checked on the critical surfaces and dimensions, and the sampling scope plus appearance standard are fixed during first-article approval.
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
