Jinyuanfu Hardware Products Co., Ltd. specializes in the development and manufacturing of high-performance alloy die-cast components.

As one of the core structural parts in vehicle powertrains, automotive transmission die casting parts are widely used in traditional fuel vehicles, hybrid power systems, and new energy vehicles (NEVs).

We provide a one-stop solution — from mold design, die-casting forming, precision CNC machining, to surface finishing — meeting the stringent requirements for strength, sealing performance, and dimensional accuracy of transmission housings.

 

Product Advantages

1. Excellent Density & Vacuum Integrity

Using high-vacuum die-casting technology, we effectively eliminate porosity and shrinkage defects.

Our castings meet ≤ 50 mbar vacuum tightness and solid-solution welding standards, ensuring leak-free transmission housings.

2. High Structural Strength

We use high-strength aluminum alloys such as ADC12 and A380, with optional T6 heat treatment to enhance pressure resistance, fatigue strength, and wear performance — ideal for long-life automotive transmissions.

3. Superior Dimensional Accuracy

Our in-house mold design team and CNC precision machining centers guarantee a flatness within 0.3 mm on critical assembly surfaces, ensuring perfect alignment and noise-free operation.

4. Complex Structure Integration

We support integrated one-piece die-casting for multi-chamber gearbox structures, reducing post-assembly operations and improving product reliability.

5. Multiple Surface Finishing Options

Surface treatments such as sand-blasting, anodizing, electrophoresis, powder coating, and painting are available, ensuring both aesthetic appeal and corrosion protection.

Typical Product Types

Transmission housings (upper/lower/integrated)

Main and auxiliary gearbox casings

Electric-drive gearbox housings for NEVs

Dual-clutch transmission (DCT) system components

Lightweight structural transmission components

Manufacturing Capabilities

Item	Specification
Die-casting machine tonnage	160 T – 800 T
Maximum casting weight	Up to 10 kg per part
Mold accuracy	± 0.01 mm
Process flow	Mold-flow simulation → Mold manufacturing → HPDC forming → CNC machining → Surface finishing → Inspection & packaging
Quality certifications	IATF 16949, ISO 9001, ISO 14001

Our integrated HPDC (High-Pressure Die Casting) production ensures high consistency, efficient cycle times, and stable mass-production quality.

Application Fields

Automatic / manual transmission assemblies for fuel vehicles

New energy vehicle (EV/HEV) drive gearbox housings

Integrated e-drive modules and reducer housings

Military or industrial gear reduction systems