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Transmission Housings CNC Machining Services for Automotive Industry

Transmission housings are engineered meshed enclosures that secure transmissions while keeping gear alignment, fluid and heat control in place for manual, automatic and CVT transmissions. Zintilon CNC machining of transmission cases, bell housings and gearbox assemblies ensures critical automotive powertrain applications receive dimensionally accurate and pressure-retaining durable housings.
  • Machining for complex internal geometries and bearing mounting surfaces
  • Tight tolerances up to ±0.002 in for gear alignment precision
  • Precision milling, boring & surface finishing
  • 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

prductivity

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.

10x

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.

world

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 CNC machining of transmission housings and automotive powertrain components is offered to automotive manufacturers, transmission suppliers and aftermarket equipment suppliers.

Prototype Transmission Housings

Order high-fidelity prototypes of complete assemblies of transmission housings. They should match your end design. Before going to high-volume automotive production, check gear alignment, fluid seal verification, and thermal management.



Key Points:

  • Rapid prototyping with high precision

  • Tight tolerances (±0.002 in)

  • Test design, alignment, and sealing performance early

3 Axis CNC Machined Stainless Steel Passivation

EVT – Engineering Validation Test

Continue precise prototyping iterations of transmission housings to validate and confirm all structural, thermal, and sealing performance and requirements. Potential issue validation should occur early to enable seamless transition to large-scale automotive manufacturing.



Key Points:

  • Validate prototype functionality

  • Rapid design iterations

  • Ensure readiness for production

Anodized Aluminum 1024x536

DVT – Design Validation Test

To confirm design performance, confirm seal and structural integrity of transmission hardware and housings, test different materials and mounting arrangements to ensure optimal powertrain performance, and design accuracy prior to mass production.



Key Points:

  • Confirm design integrity and sealing specifications

  • Test multiple materials and configurations

  • Ensure production-ready performance

design aluminium

PVT – Production Validation Test

Unlock large-scale production on transmission housings and check for production constraints to validate and ensure performance of design for seamless and consistent production.



Key Points:

  • Test large-scale production capability

  • Detect and fix process issues early

  • Ensure consistent part quality

Anodized Titanium Fastener

Mass Production

Automotive manufacturers and transmission providers depend on us to deliver the suitable transmission housings on time while duplicating the exact powertrain performance attributes and precision crafted to the automotive standards. We have the capability to manufacture these housings in an automotive-grade quality and in large volumes.



Key Points:

  • Test large-scale production capability

  • Detect and fix process issues early

  • Ensure consistent part quality

production

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 Transmission Housings Machining Capabilities

We offer Transmission Housings CNC Machining Services for the Automotive Sector employing our state-of-the-art CNC multi-axis machining centres, automotive testing devices for pressure and vibration, and seasoned automotive parts machinists. Each component of transmission assemblies, manual transmission cases, automatic transmissions, and CVT housings are meticulously designed to retain fluids and operate efficiently across an automotive operating range of 150,000 to 300,000 miles. We ensure the structure's integrity, and craft precision bearing races to maximize fluid containment and performance.

We complete CNC milling to tolerance on the order of .01mm on mounting pads and complex internal cavities, boring to tight concentricities for bearing assemblies, drilling deep holes for lubrication passages and performing surface treatments for corrosion, wear and other surface d treatments, followed by pressure testing and other inspection and validation for the mounted components and assemblies. Each of the parking and suspension lifting assemblies for hydraulic actuators consists of housing that is precision machined from lightweight, castable aluminum alloys (A356, A380), durable cast iron (Grade 30, 40), ultra-light magnesium alloys (AZ91, AM60), or steel forgings (4140, 8620), for high-durability applications. The final machined components and assemblies exhibit an exceptional strength to weight ratio, corrosion resistant and tolerant to mechanical failures during extended operations from 200 to 1,500 Nm for and ambient -40 to +150 . The parking suspension actuators are designed to fit prop shafts for hydraulic controlled lifting systems for wagons carrying Fennoscandian Bilateral and Quadruple Rare Earth Marine Harvesting and Transport systems.
milling

CNC Machining

sheet metal

Sheet Metal Fabrication

edm

Wire EDM

casting

Metal Casting

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 Transmission Housings

Our CNC Machine Shop can fully support the rapid prototyping and precision automotive manufacturing of Transmission Housings with 10+ grades of automotive alloys and lightweight alloys. Transmission Housings Machining Services supports across, and with full consistency for quality and specifications of the automotive industry. David Allen, CNC machining and automotive engineering specialist.Frequently Asked Questions: Transmission Housings for the Automotive Industry.
Aluminum Image

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 Image

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 Image

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 Image

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
Bronze Image

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 Image

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
Copper Image

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 Image

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 Image

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
Magnesium Image

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
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FAQs:Transmission Housings for Automotive Industry Applications

Transmission housings are structural enclosures for manuals, automatics, and CVT transmissions. These are transmission cases, bell housings, and gearbox assemblies, with torque ratings of 200-1,500 Nm, and operational temperature ratings of -40°C - +150°C, with mileage ratings of 150,000-300,000 miles of service.

Aluminum alloys (A356, A380) enhance lightweight construction which reduces vehicle weight with 30-40% compared to the weight of the vehicle with a cast iron. Excellent Thermal conductivity is present. Cast iron delivers maximum durability and vibration damping construction. Magnesium alloys produce an ultra lightweight design for fuel efficient vehicle.

For housing interfaces, we achieve ±0.05mm dimensional tolerances, 0.01mm concentricity for bearing mounting surfaces, ±0.025mm bore tolerances for shafts of gears, and ensure surface finishes of below 3.2 Ra microns for proper alignment and fluid sealing.

Yes, components are compliant with automotive regulations IATF 16949 for automotive quality, known as SAE for the standard of materials, testing and automotive Quality Assurance, ISO 9001 for quality management is also ISO 9001 automotive durability. Complete with material traceability and pressure testing documents.

Standard housings take around 20-30 days and include the steps of machining, heat treatment, and testing. More complicated custom assemblies take around 8-12 weeks. Prototype housings can be done in 15-25 days.

Available finishes include powder coating, which provides corrosion protection within a coating thickness of 60-120 microns and a durability that exceeds 1000 hours of salt spray testing, anodizing for aluminum that provides a protective oxide layer with impressive corrosion resistance, e-coating (electrocoating) that allows for uniform coverage of thick electrodes in complex geometries with enhanced corrosion protection, and machined surfaces that can be produced to achieve a particular roughness that is required for a proper gasket seal, mounting of bearings, and other surface treatments that are corrosion resistant and are wear resistant, such as thermal spray coating and shot peening for the improvement of fatigue strength.

Certainly. We create bespoke transmission housings that fulfill specific drivetrain design requirements. Some examples include: manual gearbox housings that include integrated clutch bell housings for compact assembly design; full automatic transmission housings with valve body mountings and cooling channel paths; continuously variable transmission housings with structural supports for the pulleys and containment for the belts; hybrid transmission modules that integrate an electric motor with mechanical components; heavy duty truck transmission housings that offer additional mounting reinforcement; and other customization such as integrated oil pumps, temperature measurement devices, vibration dampening, modular designs, and lightweight construction that provide significant weight savings in the range of 20-30%.

Transmissions housings made CNC/Machined have reliable bearing mounting surfaces with concentricity of 0.01mm. This ensures correct alignment of the gears such that the transmission does not experience premature failure due to drifting, lower transmission life, unwanted noise, and wear which is significant in reducing the transmission lifespan by almost 30-50% (friends due to premature wear??). Dimensional accuracy of +/- 0.05mm, which also ensures correct alignment of the components and sealing of gaskets to prevent unwanted leakage of fluids. Controlled Internal geometries with surfaces that have been polished to mitigate the risk of needle bearing galling increases the flow of lubricating oil to the bearings reducing losses due to friction by 5-10% thereby enhancing the fuel efficiency due to reduced friction losses. Decisive, strategic material selection for the case of CnC made cast housings is Aluminum alloy reducing the vehicle weight thereby economically boosting fuel consumption by 3-5% and for heavy-duty applications, the cast iron is durable with superior wear resistance). Quality manufacture offers durable reliable operation of automotive transmission to end customers in passenger cars with seamless and quiet (noiseless) shifts, commercial trucks with over 500,000 miles durability, racing with high performance applications in torque (high) and electric vehicles with integrated motor and transmission assembly with 150,000 to 300,000 mile service life in delivering reliable performance & fuel efficiency.
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