We machine production parts for Automotive and EV customers, from single prototypes through to repeat batches of tens of thousands. Typical work covers bracket assemblies, motor housings and battery module frames, usually in 6061-T6 or 6082-T6.
What makes Automotive and EV different from general machining is not the geometry — it is the documentation and the failure modes. The parts that come back are the ones where ppap documentation is often the real bottleneck was not designed out at the start.
Parts we machine for Automotive and EV
- Bracket assemblies
- Motor housings
- Battery module frames
- Suspension links
- Sensor housings
Materials we run for Automotive and EV
- 6061-T6
- 6082-T6
- A356 castings
- 4140
- SPCC steel
Standards and documentation
- IATF 16949, PPAP level 3 or 4
Tell us which standard applies and which documents you need with the shipment. Dimensional reports, material certificates, certificates of conformity and first article inspection reports are all available, and it is much cheaper to agree them before the batch runs than to reconstruct them afterwards.
Where Automotive and EV projects usually go wrong
- PPAP documentation is often the real bottleneck
- Cost pressure forces design-for-manufacture compromises
Tolerance and finish we hold
| Requirement | Typical capability |
|---|---|
| General tolerance | +/-0.1 mm on most brackets; +/-0.02 mm on bearing and sealing features |
| Surface finish | Ra 0.4 to 3.2 um |
| Material certification | EN 10204 3.1 on request |
| Inspection | Dimensional report, CMM report, FAIR |
| Packaging | VCI and desiccant for steel, individual wrap for cosmetic faces |
Frequently asked questions
Do you have experience with Automotive and EV parts?
Yes. Typical parts we run are bracket assemblies and motor housings. We can share the process route and inspection approach for a comparable part before you commit.
Which materials do you recommend for Automotive and EV?
6061-T6, 6082-T6, A356 castings, 4140. The right choice depends on which of corrosion, weight, strength and cost is the binding constraint, and we will say so plainly rather than quoting the most expensive option.
What documentation do you provide?
A dimensional report and a certificate of conformity as standard. Material certificates, CMM reports, FAIR and PPAP submissions are available when your quality system requires them.
What tolerances do you hold for Automotive and EV parts?
+/-0.1 mm on most brackets; +/-0.02 mm on bearing and sealing features is typical for the industry. Tighter tolerance on individual features is possible and is quoted against the specific feature rather than the whole part.
Related pages
- Industries — the full index for this section.
- CNC Machining for Semiconductor Equipment
- CNC Machining for EV Battery and BMS Hardware
- CNC Machining for Medical Devices and Instruments
- CNC Machining for Aerospace Components
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
Get a price for your part
Send a STEP file and a drawing with tolerances, material and quantity. We quote within one working day and machine in our own facility in Shenzhen — milling, turning, EDM, grinding and finishing under one roof, no trading middleman.
Start an instant quote or send your drawings directly. English-speaking engineering support, DFM feedback before you commit to a batch.