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Jinhong is a trusted China-based manufacturer of high precision machining sand casting solutions, combining the design flexibility of sand casting with the dimensional accuracy of CNC machining to deliver near-net-shape components for mission-critical applications. Our CNC machined sand casting parts are engineered to meet the strictest tolerance and quality standards, making them the top choice for business clients in aerospace, medical device, and industrial precision equipment sectors. We support full custom design and manufacturing, from DFM analysis to final inspection, to deliver components that balance structural integrity, dimensional precision, and cost efficiency for your enterprise projects.
Our unique sand casting + CNC machining hybrid process delivers the best of both worlds: sand casting enables cost-effective production of complex geometries including undercuts and hollow sections, with 30% higher material utilization than pure CNC machining, while post-casting CNC processing delivers ultra-tight tolerances for critical mating features.
With advanced 5-axis CNC machining centers, we achieve IT8-IT10 machining tolerances (±0.05-0.1mm) for general features, and positional tolerance ±0.03mm for critical bolt holes and mating surfaces. We deliver surface roughness as low as Ra ≤0.8μm for sealing surfaces via precision grinding, meeting the strictest requirements for aerospace and medical applications.
Our custom sand casting with CNC machining supports a wide range of materials including ductile iron (65-45-12), aluminum (A356.2-T6), carbon steel, and stainless steel (316L). We can produce components with thin walls as thin as 3mm, deep bores (L/D ≤10), and tight-radius corners (R ≥2mm), with full design customization to match your application needs.
Every part undergoes dual inspection at both casting and machining stages: X-ray and MPI testing for casting defects, and CMM inspection (accuracy ±0.02mm) for dimensional precision. Each component is serialized with full production and inspection data stored in our digital database, ensuring 100% traceability compliant with ISO 22309 standards.
Parameter | Value |
Product Name | CNC Precision Machined Sand Casting Parts |
Core Material Options | Ductile Iron, Aluminum Alloy, Copper, Brass, Carbon Steel, Stainless Steel, Zinc Alloy |
Primary Casting Methods | Green Sand Casting, Investment Casting, Gravity Casting |
Casting Tolerance | Sand Casting CT9-CT10 (ISO 8062), Investment Casting CT4-CT6 |
Machining Tolerance | IT8-IT10, ±0.03mm Positional Tolerance for Critical Features |
Core Certifications | ISO9001:2015, AS9100D, ISO 13485, IATF 16949 |
Surface Finish Options | Sandblasting, Polishing, Grinding, Custom Coating |
Surface Roughness | Ra ≤0.8μm (Ground Sealing Surfaces), Ra ≤1.6μm (Machined Features) |
Inspection Standard | 100% Visual Inspection, CMM Dimensional Inspection, X-Ray/MPI Defect Testing |
Order Support | OEM/ODM Custom, Prototype & Bulk Batch Orders |
As an industry-leading foundry with decades of expertise in precision machined sand casting, we deliver end-to-end solutions for enterprise buyers worldwide. Our facility is equipped with 5-axis CNC machines with 0.001mm resolution, supported by an in-house metrology lab with ZEISS CMM equipment (accuracy ±0.005mm) to ensure uncompromising precision. We offer a 25-day standard turnaround for complex casting + machining projects, 30% faster than the industry average, via concurrent engineering and in-house tooling production. Our engineering team provides free DFM analysis to optimize your design, reducing machining time by up to 40% while maintaining full functional performance.
Our aerospace grade sand casting components are used for landing gear brackets, avionics housings, and engine mounts, fully compliant with AS9100D standards and NAS 1334 tolerance requirements for aerospace applications.
We produce precision cast and machined components for surgical robot joints, imaging equipment frames, and orthopedic implants, certified to ISO 13485 standards with biocompatible coating options available.
Our parts are widely used for gearbox internals, precision guides, and optical mounts, with exceptional dimensional stability for direct integration into high-precision industrial assemblies.
We manufacture critical automotive components compliant with IATF 16949 standards, with PPAP Level 3 capability for high-volume production of engine and transmission parts.
We offer a 25-day standard turnaround for complex casting + machining projects, with expedited lead times available for urgent prototype orders. Standard in-stock components can be shipped within 3 working days.
Our facility is certified to AS9100D for aerospace components, ISO 13485 for medical devices, and IATF 16949 for automotive parts, with full documentation support for regulatory compliance.
Yes, we specialize in machining hard materials with hardness up to HRC 50+, using carbide tools and cryogenic cooling to maintain dimensional stability and surface finish during processing.
