CNC Manufacturing for Automotive

Robotika provides advanced CNC manufacturing solutions for the automotive industry, with rapid prototype delivery in as fast as 7 days.

10+ years of CNC manufacturing experience in automotive
+0.01 mm tolerances on critical dimensions
Various materials available, including metals and engineered plastics
Automotive components undergo rigorous performance and durability testing
24/7 engineering support, CMM inspection & full material traceability

Start Manufacturing Your Automotive Parts !

STEP | STP | IGS | IGES | PRT | SLDPRT | SAT | X_T
Max. file size: ≤15MB

Reliable CNC Automotive Parts Supplier from China

Robotika provides CNC manufacturing services for the automotive industry, helping customers move quickly from design validation to production-ready parts. With the ability to deliver high-precision prototypes and flexible low- to medium-volume runs, we enable faster testing of complex geometries, tighter tolerance fits, and improved durability in demanding automotive environments. Our machining expertise ensures consistency across batches and supports projects ranging from component testing to pilot builds.

Beyond machining, Robotika offers added value through material guidance, finishing options tailored for both functional performance and aesthetic appeal, and rigorous CMM inspection to ensure compliance with automotive standards. With over 10 years of manufacturing experience and more than 100,000 parts delivered annually, we work with OEMs and tier-one suppliers worldwide, supporting them with reliable, scalable CNC solutions that bridge the gap between innovation and production.

What kind of automotive parts can we make?

Robotika manufactures a wide range of CNC-machined components for the automotive industry, including engine blocks, cylinder heads, gearbox housings, suspension brackets, brake system components, steering parts, heat sinks, and EV battery trays. These parts are commonly produced from aluminum alloys, stainless steel, titanium, and engineering plastics such as POM, nylon, and ABS for lightweight functional components. To meet both performance and aesthetic requirements, we provide surface finishes such as anodizing, passivation, powder coating, polishing, and painting to improve durability and appearance. All components are thoroughly inspected with automated CMM and visual checks, achieving tight tolerances of up to ±0.01 mm, ensuring consistent quality and reliability in automotive assemblies.

Engine blocks
Cylinder heads
Gearbox housings
Transmission covers
Camshaft carriers
Crankshaft housings
Suspension brackets
Control arms

Steering knuckles
Brake calipers
Brake discs (prototype)
Differential housings
Axle components
Drive shafts
Turbocharger housings
Intake manifolds

Exhaust manifolds
Heat sinks
Cooling plates
EV battery trays
Motor housings
Power electronics enclosures
Mounting brackets
Dashboard structural frames

Automotive CNC Machining Capabilities

Supported Materials

We machine automotive-grade metals (Al 6061, 7075, 304/316L stainless steel, Ti-6Al-4V) and engineering plastics (PEEK, PTFE), suitable for structural and functional parts.

Machining Accuracy

Standard tolerance: ±0.01–0.02 mm for high-precision components.

Maximum Machining Size

Up to 1000 × 600 × 500 mm.

Surface Finishing Options

Anodizing, polishing, bead blasting, powder coating.

Delivery Time

Standard lead time: 5–10 days; expedited service available.

Experience the boundless possibilities of customization

Enhance your automotive components with precise machining and durable surface finishes. At Robotika, we customize each part to your exact requirements—including material, geometry, and coating—ensuring performance, reliability, and full compliance with automotive standards.

Name	Tolerance Range
Standard Automotive Parts	±0.2 mm to ±0.5 mm
Precision Automotive Parts	±0.05 mm to ±0.2 mm
Complex Automotive Parts	±0.1 mm to ±0.3 mm

Name	Description	Can Be Applied with
Anodizing	Enhances corrosion resistance and surface hardness; allows color finishes.	Engine brackets, aluminum chassis components, suspension parts
Powder Coating	Durable coating protecting against wear, chemicals, and environment.	Exterior panels, engine covers, underbody brackets
Polishing	Improves surface smoothness, appearance, and reduces friction.	Dashboard trim, gear housings, visible engine covers
Bead Blasting	Creates uniform matte finish, removes burrs, improves coating adhesion.	Aluminum control arms, brackets, housings
Electroplating (Nickel/Chrome)	Adds metal layer to enhance corrosion resistance, hardness, and wear resistance.	Valve seats, engine components, decorative trims
Passivation	Forms protective oxide layer on stainless steel to enhance corrosion resistance.	Stainless steel fasteners, exhaust brackets, fuel system components
Heat Treatment / Hardening	Improves strength, wear resistance, and toughness.	Gears, shafts, suspension components
Laser Engraving / Marking	Provides precise, permanent identification without affecting part integrity.	Part numbers, VIN plates, safety labels, engine codes

Aluminum Alloys (6061, 7075)

Aluminum alloys (6061, 7075) are staples in automotive CNC machining, offering a superior strength-to-weight ratio that reduces vehicle weight by 30-40% compared to steel, directly improving fuel efficiency and handling. Their exceptional machinability allows for intricate designs with tight tolerances (±0.005mm), critical for complex components like engine brackets and suspension links. 6061, with good corrosion resistance and weldability, is used for chassis parts, transmission housings, and lightweight structural frames. 7075, boasting higher tensile strength (572MPa), excels in high-stress applications such as racing suspension components and drive shafts. CNC machining ensures consistent precision, making these alloys indispensable for balancing performance and efficiency.

Mill Lead Time: 3–7 days
Finishes: Raw, anodized, bead blasted, polished

Stainless Steel (304, 316L)

Stainless steel grades like 304 and 316Lare ideal for automotive CNC machining, valued for their exceptional corrosion resistance and durability in harsh environments. 304, containing 18% chromium and 8% nickel, resists rust and oxidation, making it perfect for exhaust manifolds, brake line brackets, and fuel system fasteners. 316L, enhanced with molybdenum, offers superior resistance to saltwater and chemicals, suiting marine vehicle components and industrial truck fuel lines. CNC machining achieves precise cuts for tight fits, ensuring parts like exhaust flanges and fuel line connectors maintain integrity under high temperatures and pressure, critical for long-term reliability.

Mill Lead Time: 5–10 days
Finishes: Polished, bead blasted, passivated

Titanium Alloys

Titanium alloy Ti-6Al-4V is a premium choice for automotive CNC machining, combining a strength-to-weight ratio that surpasses steel with 40% lower density, ideal for high-performance vehicles. Its resistance to corrosion (even in saltwater) and ability to withstand temperatures up to 400°C make it suitable for racing exhausts, turbocharger components, and suspension springs. Used in Formula 1 cars and luxury sports vehicles, it reduces unsprung weight to enhance acceleration and handling. CNC machining precisely shapes its tough structure, ensuring parts like titanium valve retainers meet strict tolerances for seamless integration into high-revving engines.

Mill Lead Time: 7–12 days
Finishes: Raw, bead blasted, anodized

Brass

Brass is highly sought-after in automotive CNC machining for its 100% machinability rating, allowing for intricate designs like threaded fuel line connectors and precision bushings. Its low friction coefficient (0.03-0.05) reduces wear in moving parts, while good corrosion resistance suits moist environments. Brass is widely used in fuel injectors, radiator fittings, and electrical connectors, where reliable sealing and conductivity are essential. CNC machining achieves smooth surfaces (Ra 0.8μm or better) and tight tolerances, ensuring parts like brass valve stems maintain consistent performance in engines and transmission systems.

Mill Lead Time: 3–7 days
Finishes: Polished, plated

Copper

Copper is indispensable in automotive CNC machining, prized for its 97% electrical conductivity and superior thermal transfer—critical for hybrid and electric vehicle components. Its malleability allows for complex shapes, while CNC machining ensures precise dimensions for tight fits in battery systems. Used in battery terminals, motor windings, and heat sinks, copper minimizes energy loss and prevents overheating. For example, electric vehicle battery busbars rely on copper’s conductivity to distribute high currents efficiently, with CNC-cut edges ensuring secure, low-resistance connections that enhance battery performance and safety.

Mill Lead Time: As fast as 3 days
Finishes: Raw, plated, polished

ABS

ABS is a top plastic for automotive CNC machining, offering high impact resistance (20kJ/m²) and ease of processing, making it ideal for complex interior and exterior parts. Its smooth surface accepts paints, textures, and plating, enhancing aesthetics in dashboards, door panels, and sensor housings. ABS resists oils and mild chemicals, maintaining integrity in engine bays and interior environments. CNC machining achieves tight tolerances (±0.02mm) for seamless assembly, ensuring parts like infotainment system casings and air vent grilles fit perfectly, combining functionality with visual appeal in modern vehicles.

Mill Lead Time: Up to 3 days
Color: Black, neutral matte finish

PEEK

PEEK is a high-performance plastic for automotive CNC machining, withstanding continuous temperatures up to 260°C and resisting oils, fuels, and acids—critical for engine and fuel system parts. Its tensile strength (90MPa) rivals metals, while low moisture absorption ensures dimensional stability. Used in turbocharger seals, fuel injector housings, and transmission gaskets, PEEK maintains shape under extreme pressure and heat. CNC machining precisely cuts its rigid structure, ensuring parts like high-pressure fuel line connectors seal tightly, preventing leaks and ensuring reliability in high-performance engines.

Mill Lead Time: 5–10 days
Color: Black, natural matte finish

Nylon

Nylon is ideal for automotive CNC machining, offering high wear resistance, self-lubrication, and impact strength—perfect for moving parts. Its low friction coefficient (0.15) reduces noise in gears and bushings, while resistance to oils and chemicals suits engine bay components. Used in seat adjustment gears, door latch mechanisms, and hose connectors, nylon withstands repeated use without degradation. CNC machining shapes it into precise, low-tolerance parts (±0.03mm), ensuring smooth operation in components like window regulator gears and suspension bushings, enhancing vehicle comfort and longevity.

Mill Lead Time: 3–7 days
Color: Natural, black

PC

Polycarbonate (PC) stands out in automotive CNC machining for its exceptional toughness—250 times stronger than glass—and 89% light transmission, making it ideal for transparent parts. It withstands temperatures from -40°C to 120°C, suiting headlight covers, instrument panel lenses, and sunroofs. CNC machining cuts complex shapes like curved light housings, ensuring precise alignment with LEDs for optimal illumination. PC’s rigidity prevents warping, maintaining clarity in parts like center console screens, where visibility and durability are key for driver safety and convenience.

Mill Lead Time: 5–10 days
Color: Transparent, black, custom

PTFE

PTFE is perfect for automotive CNC machining, with a near-zero friction coefficient (0.04) and resistance to 99% of chemicals, including gasoline, brake fluid, and oils. Its flexibility and ability to withstand temperatures from -200°C to 260°C make it ideal for seals, gaskets, and sliding components. Used in fuel pump seals, brake caliper gaskets, and throttle body bushings, PTFE prevents leaks and reduces wear. CNC machining shapes it into precise, low-tolerance parts, ensuring a tight seal in components like fuel injector O-rings and valve stem seals, critical for engine performance and emissions control.

Mill Lead Time: 5–10 days
Color: White, natural

Carbon Fiber Reinforced Plastics

CFRP is ideal for automotive CNC machining due to its exceptional combination of ultra-lightweight properties (density ~1.6g/cm³), high tensile strength (up to 3000MPa), and excellent stiffness—surpassing steel while weighing 50% less. This makes it perfect for high-performance vehicles, where reducing weight enhances speed, fuel efficiency, and handling. Common applications include lightweight body panels (like hoods and fenders), racing seat frames that balance safety and weight, and instrument brackets that support electronics without adding bulk. CNC machining ensures precise tolerances (±0.1mm), complex geometries, and smooth surface finishes, making CFRP indispensable for premium and racing automotive applications.

Mill Lead Time: Up to 7 days
Color: Black, matte finish

Glass Fiber Reinforced Plastics

GFRP offers a cost-effective balance of good strength, lightweight properties (density ~2.0g/cm³), and excellent dimensional stability, making it highly suitable for automotive CNC machining. Its rigidity resists warping under temperature changes, while its lower cost compared to CFRP suits mass-produced vehicles. Typical applications include door inner panels that reduce weight without sacrificing structural integrity, instrument brackets that secure dashboard components, and exterior trim parts (like spoilers) that enhance aesthetics and aerodynamics. CNC machining delivers accurate shapes, tight tolerances, and high-quality surface finishes, ensuring both functional performance and visual appeal in mainstream automotive designs.

Mill Lead Time: Up to 7 days
Color: Neutral, matte finish

Hybrid Composites (CFRP + GFRP)

Hybrid composites (CFRP + GFRP) combine the best of both materials: CFRP’s superior strength and stiffness with GFRP’s cost-effectiveness and impact resistance. This blend offers high strength-to-weight ratio, reduced overall cost compared to pure CFRP, and balanced performance for demanding automotive roles. They are used for high-strength structural components like chassis rails, lightweight support frames for battery packs in electric vehicles, and chassis reinforcements that enhance safety without excessive weight. CNC machining enables precise fabrication of complex geometries—critical for integrating with other vehicle parts—delivering consistent performance and reliability in applications where strength, weight, and cost must be optimized.

Mill Lead Time: Up to 7 days
Color: Black/Gray, matte finish