Can you machine turbo compressor housings from a hand drawing?

Yes. Send us your hand sketch or existing housing dimensions. Our engineers create a CAD model, send it for your approval, then machine the housing. We have machined turbo housings from hand-drawn cross-sections and measurements from an existing turbocharger.

What aluminum grade is best for a turbo compressor housing?

Aluminum 6061-T6 is the standard choice for most turbo compressor housings. It offers good machinability, adequate strength for compressor pressures, and excellent corrosion resistance. For high-boost applications or weight-critical motorsport use, 7075-T6 provides higher strength but is more expensive to machine.

Can you machine the internal scroll geometry of a turbo housing?

Yes. Our 5-axis machining centers can produce the complex internal scroll and volute geometry of turbo compressor housings in a single setup. This eliminates alignment errors from multiple setups and produces accurate scroll profiles that match your design specification.

What is the lead time for a prototype turbo housing?

A prototype turbo compressor housing typically takes 10-20 business days from drawing approval to delivery, depending on complexity. Express service is available for urgent requirements. Contact us with your drawing for a specific lead time estimate.

Custom CNC Machined Turbo Compressor Housing — Billet Aluminum

Name: CNC Machined Turbo Compressor Housing — Billet Aluminum
Brand: EKINSUN LTD
Availability: InStock

About This Part

The turbocharger compressor housing is one of the most geometrically complex components we machine. It contains the internal scroll and volute that accelerates compressed air into the engine intake. The scroll geometry must be precisely machined to match the compressor wheel and achieve the designed pressure ratio and flow characteristics.

EKINSUN machines turbo compressor housings from billet aluminum on our 5-axis CNC machining centers. 5-axis machining allows the complex internal and external geometry to be cut in a single setup, eliminating the alignment errors that occur when parts are re-fixtured between operations.

Why Billet Aluminum?

Cast iron is the traditional material for OEM turbo housings — it is cheap in high volume and handles the thermal cycling well. However, for custom and performance applications, billet aluminum has significant advantages:

Weight — aluminum is approximately one-third the weight of cast iron. This reduces rotating inertia (turbo lag) and overall vehicle weight.
Machinability — billet aluminum can be machined to much tighter tolerances than castings, allowing more precise scroll geometry and better surface finish on flow surfaces.
Customization — billet housings can be machined to exactly the dimensions you specify, including non-standard scroll sizes, port angles, and flange patterns.
Visual appeal — polished or anodized aluminum housings are a feature in high-performance and show vehicles.

We Can Machine from Your Drawing or Existing Part

If you have a CAD file, send it directly. If you have a hand-drawn cross-section with scroll dimensions, we can work from that. If you have an existing turbo housing you want replicated or modified, send it to us for reverse engineering.

This is one of the cases where our hand-drawing acceptance is especially valuable — turbo housing designs are often developed by engineers who sketch the scroll geometry by hand before committing to CAD.

Surface Finishing Options

As-machined — natural aluminum with machining marks visible
Bead blasted — uniform matte finish
Clear anodized — protective clear coat, natural aluminum color
Hard anodized — thick, wear-resistant black or grey coating
Polished — mirror finish on external surfaces
Custom anodized color — red, blue, gold, black, etc.

Technical Specifications

Standard specifications for our CNC machined turbo compressor housings. All dimensions, materials, and finishes are customizable.

Parameter	Specification	Notes
Material	Aluminum 6061-T6 (standard), 7075-T6 (high strength)	Other alloys available on request
Machining Process	5-Axis Simultaneous CNC Milling	Single setup eliminates re-fixturing error
Dimensional Tolerance	±0.01mm standard, ±0.005mm on critical features	Specify critical dimensions on drawing
Surface Finish (as-machined)	Ra 1.6μm standard, Ra 0.8μm fine	Internal flow surfaces can be polished
Post-Processing Options	As-machined / Bead blast / Clear anodize / Hard anodize / Polish / Color anodize	Specify at time of order
Max Part Envelope	600 × 400 × 400mm	Larger parts possible — contact us
Drawing Formats Accepted	STEP, IGES, SolidWorks, DXF, PDF, Hand Sketch, Photo	Hand sketches converted to CAD free
Minimum Order Quantity	1 piece (prototype)	Volume pricing from 5 pieces
Prototype Lead Time	10–20 business days	Express service available
Inspection & Reports	CMM dimensional report + material certificate	Included on request
Shipping	DHL / FedEx / UPS Express worldwide	3–5 days to USA/EU after dispatch

Frequently Asked Questions

Yes. Send us your hand sketch with the critical dimensions — scroll radius, width, inlet/outlet sizes, flange patterns. Our engineers create a 3D CAD model, send it for your approval, and machine the housing once you confirm it's correct.

6061-T6 for most applications — good balance of strength, machinability, and cost. 7075-T6 for high-boost or motorsport applications where maximum strength-to-weight ratio is needed. We advise on material selection based on your boost pressure targets and application.

Yes. Our 5-axis CNC centers machine the internal scroll in a single setup, holding tolerances of ±0.01mm on critical dimensions. The single-setup approach eliminates repositioning errors that occur with 3-axis multi-setup machining.

MOQ is 1 piece. We machine single prototypes regularly. Production run pricing is significantly lower — contact us for a quote at your required quantity.