Aluminum Crankcase
Custom Aluminum Casting & Machining Service — From Your Drawing to Finished Parts
This Aluminum Crankcase is a core structural component designed for cylinder engines . It is manufactured by our in-house Low Pressure Casting + CNC precision machining process. The use of A356 aluminum alloy with T6 heat treatment provides an excellent balance of high strength, superior pressure tightness, and lightweight performance. The low-pressure casting process ensures excellent internal soundness, reduced porosity, and uniform mechanical properties — all critical for crankcase housings that must maintain oil-tight sealing, resist cyclic thermal and mechanical loads, and locate crankshaft bearings with precision.
Our one-stop approach — covering mold design, low pressure casting, heat treatment, CNC machining, leak testing, surface treatment, and engineered packing — delivers a ready-to-assemble crankcase that meets strict oil-tightness standards and performs reliably in demanding engine environments.
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Custom Low Pressure Casting A356 Aluminum Crankcase Housing
| Specification | Details for This Case | Matech’s Capability / Notes |
| Alloy Grade | A356 (Complies with ASTM B26/B26M) | We work with A356,ZL101,ZL102 and other standard or customized aluminum alloys, with material certification provided |
| Die Casting Machine | Low Pressure Casting Machine | We can handle aluminum Low Pressure casting parts from 0.1 kg ~ 200kg. |
| Unit Weight | 3.5kg | |
| Overall Dimensions | 150 × 140 × 120 mm | Maximum working area dimensions approximately 2500x2000x800mm, subject to drawing confirmation |
| Casting Tolerance | CT7-CT8 | Achieved via our in-house precise tooling and stable casting parameters. |
| Machining Tolerance | ±0.2 mm | Achieved by 3/4/5-axis CNC centers. Tighter tolerances can be discussed,with best achievable tolerance up to 0.005 mm |
| Surface Roughness | Ra 3.2～12.5 µm (as-cast) / Ra 0.8～3.2µm (machined) | Typical machined surface roughness can reach Ra 0.8–3.2 μm (turning/milling); Ra 0.4–0.8 μm achievable after grinding |
| Min. Wall Thickness | 3 mm | Feasible depending on geometry |
| Heat Treatment | T6 Aging Treatment | Digitally controlled full-process furnaces |
| Surface Treatment | Sandblasting | Options: Anodizing, spray painting, shot blasting, Teflon coating etc. Corrosion resistance per your spec. |
| Application | Automotive Parts | We serve robotics, automotive, medical, machinery, pump & valve, new energy, etc. |
| MOQ | 200 pcs | Flexible MOQ, starting from prototype/small batch quantities. |
| Sample Lead Time | 25-40 working days (with new tooling) | Defined upon drawing review. Expedite options available. |
| Production Lead Time | 30-45 working days | Based on order quantity and complexity, confirmed in contract. |
| Drawing Formats | STEP, IGES, X_T, DWG, PDF | We process all standard 2D/3D formats. |
| Customizable | Manufactured according to drawings or samples | Every aspect—material, geometry, tolerance, finish—is built to your design. |
| Certification | ROHS,ISO 9001:2015 | Material certificates, dimensional inspection reports, and PPAP Level 3 documentation available upon request for automotive and critical components |
| Packing | Custom PE foam + plywood crate | Engineered packing designed for your part’s specific fragile/critical areas. |
Customization Options
Every casting project starts with your unique design and requirements. Whether it's iron, steel, or aluminum, we tailor every aspect of the manufacturing process to your exact specifications. Below are the key dimensions you can customize with Matech — your drawing is our only standard.
Material Selection
From aluminum alloy to grey/ductile iron to carbon steel/stainless steel — we pour the alloy your design demands. Custom compositions are welcome. Full material certification included.
Casting Process
Our engineers tailor the most suitable manufacturing process to your specific needs based on your part's geometry, volume, and performance requirements, ensuring the optimal balance between quality and cost.
Dimensional Accuracy & Machining
We machine to your exact tolerances. In-house 3/4/5-axis CNC with custom fixtures. Casting tolerance CT4-CT11, machining tolerance down to ±0.005mm.
Heat Treatment
MATECH provides a full range of heat treatment services, including: Annealing, Normalizing, Quenching, Tempering, Carburizing, Nitriding, Solution Treatment.
Surface Treatment & Coating
Matech support: Sandblasting / Shot Blasting, Chemical Degreasing, Pickling/Passivation, Mechanical Grinding / Polishing, Zinc Plating, Hard Chrome Plating, Electroless Nickel Plating, Anodizing,Dacromet, Powder Coating, Black Oxide, Stainless Steel Passivation.
Testing, Documentation & Packaging
From material certificates to complete customs clearance documents, and from custom pallets to packaging optimized for your product's specific characteristics. Your parts arrive fully documented, well-protected, and ready for immediate use.
Our Advantages
Technical Advantages
Pattern workshop, low pressure casting workshop, CNC machining workshop, heat treatment,surface treatment, and inspection laboratory — all processes are centralized within the same facility. No outsourcing involved. This allows us to maintain full control over both lead time and product quality.
Before you commit to tooling production, we provide a detailed DFM report highlighting porosity risks, and machining optimization recommendations.
We specialize in complex internal cores, and components requiring high airtightness. In-house X-ray inspection and leak testing capabilities ensure product integrity and reliability.
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Service Advantages-总部接待区 1 拷贝
Material Advantages
Only high-quality primary aluminum ingots are used to ensure consistent mechanical performance.
Every production batch is traceable by furnace number and supported by chemical composition and mechanical property test records.
Experience covering a wide range of alloys, from A356 and A380 to specialized high-strength and corrosion-resistant aluminum alloys.
Service Advantages
A dedicated project manager oversees the entire process — from design review to final delivery — ensuring efficient communication at every stage.
Quotations are typically provided within 24–48 hours. Production progress is updated regularly through photos and production data, with continuous customer feedback collection throughout the project.
Full batch traceability and 24-hour response to quality-related issues ensure reliable post-delivery support.
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Contact Us
Contact us now! Our technical team and mechanical engineers are ready to provide one-stop support for your project from requirement review, quotation to delivery.
Send E-Mail If You Need Any HelpProfessional Manufacturer of Precision Metal Parts & Conveyor Chains
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E-mail: ma@matechin.com
Tel: 0086 21 56076732
Mobile Phone: 0086 13818971637
Address: 1st Floor, Building 8, No. 868 Xinge Road, Xinqiao Town, Songjiang District, Shanghai, China
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