CNC Machined Parts for Automotive & E-Mobility

Automotive Programs We Supply

Tier-1 and Tier-2 suppliers, EV startups, motorsport teams and aftermarket brands send us the parts that cannot wait for tooling — from a single prototype bracket to a 10,000-piece monthly run, all to the same automotive quality standards: PPAP-ready documentation, CMM inspection, and material traceability.

EV Powertrain: Where CNC Adds the Most Value

Electric-vehicle programs lean on CNC machining for the parts that cannot wait for tooling. Motor housings, stator and rotor carriers, inverter enclosures, and bus-bar holders all need flat sealing faces, tight bore tolerances, and thin walls that stay dimensionally stable after anodize. We machine these from 6061 and 7075 plate and billet, hold bearing seats to ±0.01 mm, and protect sealing surfaces so gaskets seat on the first try. For liquid-cooled plates we mill internal channels and verify them before any surface treatment goes on.

Bridging Prototype to Production

Most automotive customers do not need 100,000 pieces next month — they need 200 this week and 2,000 next quarter while the design settles. Our sweet spot is exactly that bridge. We start with 3-axis and 5-axis prototypes, add soft jaws and fixture plates as volumes rise, and hand the same drawing to a partner line for high-volume runs once the part is frozen. You keep one supplier relationship and one inspection record across the whole ramp, which is far easier than re-qualifying a high-volume shop after tooling money is committed.

Dimensional Inspection & PPAP Readiness

Every production-relevant part is measured on a CMM and reported against the drawing ballooning. For PPAP we can assemble the full package — dimensional results, material certs, process flow, control plan, and capability studies on critical characteristics — at the submission level your program requires. Prototype and pre-production parts ship with the same traceable certificates; series production in IATF-certified scope is handled through partner facilities we can introduce on request.

Material Strategy for Automotive Parts

Match the alloy to the function, not the habit. 6061-T6 covers most brackets and housings cheaply; step up to 7075-T6 where strength-to-weight or fatigue life drives the design. Stainless 304/316 suits exhaust prototypes and fluid parts that see corrosion, while 4140 makes sense for shafts and gears that carry real load. Brass C3602 machines fastest for fittings and is a good call when volumes are high and tolerances are modest. Tell us the environment — temperature, fluid, load — and we will recommend the grade and the finish that fit.

Typical Parts We Make for Automotive Customers

• EV motor housings and inverter enclosures
• Battery pack brackets and bus bar holders
• Transmission components and adapter plates
• Fuel system and brake system fittings (prototype)
• Sensor mounts and ECU brackets
• Motorsport — custom suspension links, pedal boxes, shifters

Common Materials and Grades

• Aluminum 6061-T6 / 7075-T6 — light-weighting and EV battery components
• Stainless 304 / 316 — exhaust prototypes and brackets
• Carbon and alloy steel 1018 / 1045 / 4140 — shafts and gears
• Brass C3602 — fittings and fluid-system components (see our brass CNC machining guide)

Tolerances and Finish Capabilities