ZTL TECH is now Zintilon. We’ve updated our name and logo for a fresh start. Check Now
Wheel Hubs CNC Machining Services for the Automotive Industry
Wheel hubs are precision-machined rotating components that provide mounting interfaces for wheels, support wheel bearings, and enable rotational motion transfer in automotive wheel end assemblies, including driven hubs, non-driven hubs, hub-bearing units, and integrated ABS sensor configurations. At Zintilon, we specialize in CNC machining of hub bodies, bearing races, mounting flanges, and ABS tone ring housings to achieve exceptional concentricity, surface finish quality, and long-term reliability for critical automotive wheel mounting and bearing support applications.
- Machining for precise bearing seat geometry and runout control
- Tight tolerances up to ±0.0003 in for wheel alignment accuracy
- Precision turning, milling, grinding & hardness optimization
- Support for rapid prototyping and full-scale production
- ISO 9001-certified manufacturing with automotive industry expertise
Trusted by 15,000+ businesses
Automotive Connectors Parts Machining Capabilities
Fast Delivery
A professional engineering team that can respond quickly to customer needs and provide one-stop services from design to production in a short period of time to ensure fast delivery.
High Precision
We are equipped with automated equipment and sophisticated measuring tools to achieve high accuracy and consistency, ensuring that every part meets the most stringent quality standards.
ITAF16949 Certified
As a IATF16949 certified precision manufacturer, our products and services have met the most stringent quality standards in the automotive industry.
From Prototyping to Mass Production
Zintilon is certified for the ISO 9001 standard and supplies engineered components to automotive manufacturers, wheel bearing suppliers, axle assembly producers, and aftermarket wheel component integrators worldwide.
Prototype Wheel Hubs
Obtain high-precision prototypes of wheel hub assemblies that accurately replicate your final design. Verify bearing fit quality, evaluate runout characteristics, test bolt pattern accuracy, and confirm rotational smoothness before full-scale automotive production.
Key Points:
Key Points:
- Rapid prototyping with high precision
- Tight tolerances (±0.0003 in)
- Test bearing fit, runout, and durability early
EVT – Engineering Validation Test
Wheel hub configuration and design must meet all dimensional accuracy, bearing seat quality, and structural strength requirements for prototype construction. Identify bearing wear and noise issues early to ensure smooth wheel rotation, as prototype hubs are adjusted for bearing preload and mounting requirements.
Key Points:
Key Points:
- Validate prototype functionality
- Rapid design iterations
- Ensure readiness for production
DVT – Design Validation Test
Use different materials and heat treatment processes to analyze wheel hub designs for bearing life and fatigue resistance. This is to assess the automotive wheel end system performance to achieve the desired rotational smoothness and load capacity before production.
Key Points:
Key Points:
- Confirm design integrity and bearing specifications
- Test multiple materials and configurations
- Ensure production-ready performance
PVT – Production Validation Test
Assess large-scale production capabilities for wheel hubs and evaluate production consistency challenges before initiating full production to address uniformity and efficiency gaps in the manufacturing process flow.
Key Points:
Key Points:
- Test the large-scale production capability
- Detect and fix process issues early
- Ensure consistent part quality
Mass Production
Efficiently manufacture high-quality, precision wheel hubs, guaranteeing dependable automotive wheel support and punctual delivery to vehicle manufacturers and bearing system suppliers.
Key Points:
Key Points:
- Consistent, high-volume production
- Precision machining for automotive quality
- Fast turnaround with strict quality control
Simplified Sourcing for
the Automotive Industry
Through excellent processing technologies such as CNC machining, sheet metal manufacturing, metal casting, etc., we can achieve a balance between quality and speed, whether it is special-shaped parts, lightweight or cost effect.
Explore Other Aerospace Components
Discover our full range of precision CNC machined aerospace parts, designed for strength, durability, and exact fit. Explore components for engines, fuselage, tail sections, landing gear, and more to meet every aircraft manufacturing need.
Automotive Industry, Wheel Hubs, Machining Capabilities
We are equipped with CNC multi-axis turning centers and cylindrical grinding machines to ensure quality while taking advantage of our experienced machining to deliver Wheel Hubs CNC Machining Services for the Automotive Industry. Each part, from front wheel drive hubs with integrated CV joint flanges to rear axle hubs with tapered roller bearing seats, hub-bearing units with pressed-in bearing assemblies, and performance hubs with lightweight aluminum construction, is precisely designed for maximum rotational accuracy and to minimize runout with dependable performance for over 200,000 km.
We perform precision CNC turning for bearing races with a diameter tolerance of ±0.008 mm and surface finish below 0.4 Ra microns, grinding for hardened bearing surfaces, achieving 0.2 Ra microns, precision drilling for wheel stud holes with positional accuracy of ±0.050 mm, and milling for ABS sensor mounting features with dimensional accuracy of ±0.025 mm. We also conduct runout measurement and bearing preload testing validation. We produce and fabricate a range of custom wheel hub products and specialize in forged steel wheel hubs (1045 and 1050) used in industries that require high strength and yield strength above 400mpa, case-hardened steel (8620) used in areas for bearing surfaces that need 58-62 HRC surface hardness, and a range of aluminum alloys (6061-T6, 7075-T6) used in lightweight performance applications that require a reduction in unsprung weight of 40-50%, and other materials such as ductile iron (GGG40, GGG50) used in heavy-duty truck applications, stainless steel 410 corrosion resistant applications, and nodular iron used in cost-effective OEM production. We offer the best in the industry based on our record of achieving the best concentricity without bearing seat runout exceeding 0.015mm, having an ultra smooth surface finish (Ra 0.2 to 0.8 microns) profiting our customers the best bearing life, being able to have working cycles under 5,000 to 40,000 N continuously, having the best in class mechanical endurance for more than 200kkm of 100M wheel cycles, Andnd having more than 100M wheel cycles of 200k mechanical drag endurance.
We perform precision CNC turning for bearing races with a diameter tolerance of ±0.008 mm and surface finish below 0.4 Ra microns, grinding for hardened bearing surfaces, achieving 0.2 Ra microns, precision drilling for wheel stud holes with positional accuracy of ±0.050 mm, and milling for ABS sensor mounting features with dimensional accuracy of ±0.025 mm. We also conduct runout measurement and bearing preload testing validation. We produce and fabricate a range of custom wheel hub products and specialize in forged steel wheel hubs (1045 and 1050) used in industries that require high strength and yield strength above 400mpa, case-hardened steel (8620) used in areas for bearing surfaces that need 58-62 HRC surface hardness, and a range of aluminum alloys (6061-T6, 7075-T6) used in lightweight performance applications that require a reduction in unsprung weight of 40-50%, and other materials such as ductile iron (GGG40, GGG50) used in heavy-duty truck applications, stainless steel 410 corrosion resistant applications, and nodular iron used in cost-effective OEM production. We offer the best in the industry based on our record of achieving the best concentricity without bearing seat runout exceeding 0.015mm, having an ultra smooth surface finish (Ra 0.2 to 0.8 microns) profiting our customers the best bearing life, being able to have working cycles under 5,000 to 40,000 N continuously, having the best in class mechanical endurance for more than 200kkm of 100M wheel cycles, Andnd having more than 100M wheel cycles of 200k mechanical drag endurance.
Aerospace
Materials & Finishes
Materials
We provide a wide range of materials, including metals, plastics, and composites.
Finishes
We offer superior surface finishes that enhance part durability and aesthetics for applications requiring smooth or textured surfaces.
Specialist Industries
you are welcome to emphasize it in the drawings or communicate with the sales.
Materials for Wheel Hubs
Our CNC machine shop uses and offers for wheel hubs 10+ high-strength steels, lightweight alloys, and bearing-grade materials to support rapid prototyping, precision automotive manufacturing, and to manufacture and maintain quality to SAE, ISO, and automotive bearing specifications.
High machinability and ductility. Aluminum alloys have good strength-to-weight ratio, high thermal and electrical conductivity, low density and natural corrosion resistance.
Price
$ $ $
Lead Time
< 7 days
Tolerances
Down to ±0.003 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Steel is a strong, versatile, and durable alloy of iron and carbon. Steel is strong and durable. High tensile strength, corrosion resistance heat and fire resistance, easily molded and formed. Its applications range from construction materials and structural components to automotive and aerospace components.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.001 mm (routing)
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Stainless steel alloys have high strength, ductility, wear and corrosion resistance. They can be easily welded, machined and polished. The hardness and the cost of stainless steel is higher than that of aluminum alloy.
Price
$ $ $
Lead Time
< 7 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Titanium is an advanced material with excellent corrosion resistance, biocompatibility, and strength-to-weight characteristics. This unique range of properties makes it an ideal choice for many of the engineering challenges faced by the medical, energy, chemical processing, and aerospace industries.
Price
$$$
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Highly resistant to seawater corrosion. The material’s mechanical properties are inferior to many other machinable metals, making it best for low-stress components produced by CNC machining.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Brass is mechanically stronger and lower-friction metal properties make CNC machining brass ideal for mechanical applications that also require corrosion resistance such as those encountered in the marine industry.
Price
$$$
Lead Time
< 10 days
Tolerances
Down to ±0.005mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Few metals have the electric conductivity that copper has when it comes to CNC milling materials. The material’s high corrosion resistance aids in preventing rust, and its thermal conductivity features facilitate CNC machining shaping.
Price
$$$
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Iron is an indispensable metal in the industrial sector. Iron is alloyed with a small amount of carbon – steel, which is not easily demagnetized after magnetization and is an excellent hard magnetic material, as well as an important industrial material, and is also used as the main raw material for artificial magnetism.
Price
$ $ $ $ $
Lead Time
< 10 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Due to the low mechanical strength of pure magnesium, magnesium alloys are mainly used. Magnesium alloy has low density but high strength and good rigidity. Good toughness and strong shock absorption. Low heat capacity, fast solidification speed, and good die-casting performance.
Price
$ $ $ $
Lead Time
< 7 days
Tolerances
Down to ±0.005 mm
Max part size
3000*2200*1100 mm
Min part size
2*2*2 mm
Let’s Build Something Great, Together
FAQs: Wheel Hubs for Automotive Industry Applications
Wheel hubs encompass machined-from-solid aluminum front hubs with bolt patterns (4x100mm to 5x120mm) and pilot bore diameters (54mm to 72mm), rear hubs with bearing seat diameters (40mm to 80mm) supporting static loads up to 40kN, hub-bearing units with double-row ball or tapered roller bearings, drive hubs with spline connections as per SAE J499 for CV axle engagement with a tooth count ranging from 25 to 32, and ABS sensor hubs with a magnetic encoder ring whose pole count is 40-100 inclusive. Those components require bearing seat diameter tolerance of ± 0.008 mm, concentricity of 0.015 mm, bolt hole positional deviation of ± 0.050 mm, surface hardness of bearing races ranging from HRC 58 to 62, and a total run out of less than 0.030 mm as per ISO 1101 to eliminate disturbances.
Forged steel (1045, 1050) within the range of tensile strength 600 to 800 MPa, providing structural integrity, extraordinary fatigue resistance, allowing cyclic load wheels for above 200,000 km, good machinability with surface finish below 0.8 Ra microns, and optimal grain flow resulting from the forging process, improving impact resistance. Case hardening steel (8620) resulting in hard and wear-resistant bearing surfaces at 58-62 HRC to mitigate fretting and brinelling of damage, while preserving tough ductile core at 30-35 HRC, higher contact fatigue strength above 3000 MPa in bearing race, stability in dimension during carburizing and heating, and extended bearing life to 100 million cycles. Aluminum Alloys (6061-T6, 7075-T6) provide lightweight construction at 2.7 g/cm³, resulting in unsprung mass reduction of 40 to 50 percent, better suspension response, and improved fuel efficiency with excellent thermal conductivity to prevent bearing overheating and strength fall within the range of 310-570 MPa to be adequate for passenger vehicles.
The process of CNC turning completes the first of the four operations involving the manufacture of bearing seats, this operation being the turning of bearing seats with tolerance on diameter of \pm 0.008 mm, concentricity to within 0.015 mm, and finish from 0.4 to 0.8 Ra microns. The subsequent operation, cylindrical grinding, attains, on the hardened bearing race, a finish to a diameter tolerance of \pm 0.005 mm and a 0.2 Ra micron finish. Precision drilling generates wheel stud holes with a diameter tolerance of ±0.025 mm and positional accuracy of ±0.050 mm. Multi-axis milling produces ABS sensor mounting features with dimensional accuracy of ±0.025 mm. Thread rolling creates wheel stud threads with class 2A tolerances and increased fatigue strength. Face grinding produces mounting flange surfaces with flatness of ±0.020 mm and perpendicularity within 0.025 mm. Spline milling or broaching generates CV joint splines per SAE J499 with tooth spacing accuracy of ±0.020 mm. Induction hardening creates surface hardness of 58-62 HRC on bearing races to a depth of 2 to 4 mm.
We sustain bearing seat diameter tolerance at ±0.008 mm to secure bearing fit with interference at 0.010 to 0.030 mm or clearance at 0.005 to 0.015 mm. 0.015 mm concentricity in bearing races mitigates bearing noise and premature wear. Bolt hole positional tolerance is ±0.050 mm to secure adequate wheel alignment. Other tolerances are: pilot bore diameter ±0.015 mm, flange flatness ±0.020 mm to ensure balanced wheel mounting, mounting face perpendicularity to bearing axis within 0.025 mm, mounting flange runout < 0.030 mm, and surface finish 0.2 to 0.8 Ra microns. Adhering to these tolerances makes it possible to keep bearing life over 200,000 km or 100 million rotations, below 0.1 mm wheel vibration at 100 km/h, and load capacity between 5000 to 40,000 N per hub with smooth rotation at torque variation < ±0.5 N*m. Wheel vibration would be less than 0.1 mm at 100 km/h and would sustain smooth rotation with moderate torque variation (<0.5 N*m). Bearing life would exceed 200,000 km or 100 million rotations.
Yes, we perform rapid prototyping with CMM dimensional inspection at ±0.005 mm accuracy, bearing seat measurement using air gauging at ±0.002 mm resolution, concentricity measurement with precision spindles, runout verification with dial indicators at ±0.005 mm, surface finish analysis to 0.05 Ra microns, and hardness testing from 58-62 HRC on bearing races per SAE J431. We conduct low-volume production for performance vehicles and specialty applications, producing 100 to 5,000 hubs annually, and high-volume production for automotive OEMs. We supply vehicle manufacturers with wheel hub components in volumes from thousands to millions annually, including dimensional certification with bearing seat documentation, concentricity and runout reports, bolt pattern verification per vehicle specifications, material certification with heat treatment records showing hardness profiles, non-destructive testing for critical load-bearing areas, bearing life testing per ISO 281, and full quality documentation meeting IATF 16949, ISO 9001, SAE J2530, ISO 1101, and automotive wheel bearing manufacturing standards.
Got any more questions?
