Precison Machining Services
Get superior-quality precision CNC machining services for prototypes and production parts. Take advantage of advanced manufacturing solutions with competitive rates and short lead times.
- IATF16949:2016 certificated
- Lead time as fast as 3-5 days
- Tight Tolerance of 0.01 mm
- Milled Parts as Fast as 1 Day
- 3, 4, 5 Axis Milling
Precision CNC Machining Capabilities
WIRE EDM
GCH’s wire EDM, part of our CNC services, efficiently crafts both simple and intricate shapes. Ideal for parts requiring high precision, this no-contact method produces minimal burrs and excels with metals like steel and titanium. Favored in aerospace, automotive, and electronics for their accuracy, we ensure tailored, precise solutions regardless of your needs.
| Capability | Details/Specifications |
| Material Compatibility | Stainless Steel, Titanium, Aluminum, Tool Steel, Copper |
| Tolerance | ± 0.0001 inches (0.0025 mm) or better (based on material and thickness) |
| Maximum Workpiece Size | Length: 16 inches (400 mm) Width: 12 inches (300 mm) Height: 8 inches (200 mm) |
| Cutting Speed | Up to 300 mm2/min (specific to material and thickness) |
| Surface Finish | As fine as Ra 0.2 µm |
| Maximum Cutting Thickness | Up to 12 inches (300 mm) – varies based on material |
| Wire Diameter Range | 0.004 inches (0.1 mm) to 0.012 inches (0.3 mm) |
MIRROR EDM
Mirror EDM delivers mirror-reflective, high-precision parts. Capable of producing intricate shapes with tight tolerances, it excels on hard materials where conventional tools falter. Catering to industries from aerospace to electronics, our Mirror EDM ensures unparalleled precision, capturing intricate contours and complex geometries consistently.
| Capability | Details/Specifications |
| Material Compatibility | Stainless Steel, Titanium, Aluminum, Tool Steel, Copper |
| Surface Finish | Achievable down to Ra 0.05 µm or better (based on material and process parameters) |
| Tolerance | ± 0.00005 inches (0.0013 mm) or better (depending on material and thickness) |
| Maximum Workpiece Size | Length: 16 inches (400 mm) Â Width: 12 inches (300 mm) Height: 8 inches (200 mm) |
| Maximum Cutting Thickness | Up to 10 inches (250 mm) – varies based on material |
GRINDING
GCH’s advanced manufacturing facility features high-precision grinding machines, perfect for manufacturing metal parts with tight tolerances. Our versatile grinding excels from small parts to complex geometries. The precision wheels provide controlled material removal, ensuring polished finishes. This efficiency reduces costs, wear, and errors. Trust our expert team to guide you to the ideal grinding solution for your project.
| Capability | Details/Specifications |
| Material Compatibility | Stainless Steel, Aluminum, Tool Steel,  Copper, Ceramics, Carbides |
| Grinding Methods | Surface Grinding, Cylindrical Grinding, Centerless Grinding,  Internal Grinding |
| Tolerance | ± 0.0001 inches (0.0025 mm) or better (specific to material and grinding method) |
| Maximum Workpiece Size | Length: 24 inches (600 mm) Â Width: 10 inches (250 mm) Diameter: 8 inches (200 mm) for cylindrical grinding |
| Surface Finish | Achievable down to Ra 0.1 µm or better (based on material and grinding method) |
CNC TURNING
| Capability | Details/Specifications |
| Material Compatibility | Stainless Steel, Aluminum, Tool Steel, Copper, Brass, Titanium, Plastics |
| Turning Operations | External & Internal Turning, Facing, Taper Turning, Boring, Drilling, Threading |
| Tolerance | ± 0.0005 inches (0.0127 mm) or better (specific to material and operation) |
| Maximum Workpiece Diameter | 20 inches (508 mm) or specific to machine capability |
| Maximum Workpiece Length | 60 inches (1524 mm) or specific to machine capability |
| Axis | 2-axis, 3-axis, multi-axis turning capability |
| Bar Feeding Diameter | Up to 3 inches (76 mm) or machine-specific |
CNC MACHINING
GCH’s multi-axis milling machines guarantee CNC parts with tight tolerances and precise dimensions. This technology delivers precision tailored to your needs, ideal for iterations and new products. Compatible with a broad material range, from metals to composites, our CNC milling boasts efficiency, having parts ready swiftly.
| Capability | Details/Specifications |
| Material Compatibility | Stainless Steel, Aluminum, Tool Steel, Copper, Â Brass, Titanium, Plastics |
| Milling Operations | Face Milling, Profile Milling, Pocket Milling, Complex Surface Milling, Drilling, Boring |
| Tolerance | ± 0.0005 inches (0.0127 mm) or better (specific to material and operation) |
| Maximum Workpiece Size | X: 40 inches (1016 mm) Â Y: 20 inches (508 mm) Z: 25 inches (635 mm) or specific to machine capacity |
| Axis | 2-axis, 3-axis, multi-axis turning capability |
| Bar Feeding Diameter | Up to 3 inches (76 mm) or machine-specific |
Precision Machining for Prototyping & Production
Accelerate your product development with GCH’S custom-machined prototypes and end-use products, delivered with utmost efficiency. Tailor your production needs by choosing the manufacturing volume and processes that perfectly align with your requirements. We guarantee swift turnaround times without compromising the quality of prototypes and production parts.
Precision Machined Part Size Standards
| Classification | Minimum Size (mm) | Maximum Size (mm) | Common Applications |
| Ultra-Precision Components | 0.1 | 1 | Watch components, micro devices |
| Micro Machined Parts | 1.1 | 10 | Medical devices, small electronics |
| Small Machined Parts | 10.1 | 50 | Aerospace, automotive sensors |
| Medium Machined Parts | 50.1 | 200 | Automotive, defense, industrial tools |
| Large Machined Parts | 200.1 | 1000+ | Heavy machinery, construction |
Precision CNC Machining Tolerances
| Operation Type | Typical Tolerance (mm) | Best Possible Tolerance (mm) | Notes |
| EDM (Electrical Discharge Machining) | ±0.015 | ±0.005 | Tolerance can be affected by electrode wear. |
| Grinding | ±0.005 | ±0.001 | Surface finish is typically smoother with grinding. |
| CNC Turning | ±0.025 | ±0.010 | Finish can impact tolerance. |
| CNC Milling | ±0.025 | ±0.005 | Precision can vary based on tool type and material. |
Gallery of Precision CNC Machining Parts
Why Choose Our Precision Machining Service
Bring your precision CNC machining parts to life through top-notch precision machining services. GCH boasts cutting-edge manufacturing capabilities for high precision CNC machining. All prototypes and end-use parts meet strict quality standards and tolerance requirements.
Materials for CNC Milling Parts
At GCH, our CNC milling service offers a diverse range of materials, ensuring precision and durability. This vast selection empowers our clients with optimal choices for their unique projects, boosting their product’s quality and performance.
Metals
We offer an extensive selection of high-quality metal materials for different applications.
| Aluminum | Stainless Steel | Steel |
| Copper | Brass | Bronze |
| Titanium | Zinc |
Plastics
We also provide an impressive assortment of plastic materials designed to fulfill diverse manufacturing need.
| POM | PEEK | HDPE | PET |
| Nylon | PTFE | PVC | PP |
| ABS | PC | PMMA |
Our Precision Machined Parts for Various Industrial Applications
At GCH, we prioritize the aesthetics and functionality of your precision CNC parts. Our diverse surface finishes ensure custom-tailored precision. Trust in our commitment to enhance your projects with lasting excellence.
- As-machined finish
- Anodizing
- Bead blasting
- Powder coating
- Polishing
- Polishing
- Passivation
- Brushed finish
CNC Milling Tolerances
GCH ensures precision with our CNC Milling Tolerance standards. We commit to exact measurements, benefiting clients with consistent, high-quality results, optimized for search visibility. Our standard tolerances for CNC milled metals are ISO 2768-m and ISO 2768-c for plastics.
| Type | Tolerance |
| Linear dimension | +/- 0.025 mm +/- 0.001 inch |
| Hole diameters (not reamed) | +/- 0.025 mm +/- 0.001 inch |
| Shaft diameters | +/- 0.025 mm +/- 0.001 inch |
| Part size limit | 950 * 550 * 480 mm 37.0 * 21.5 * 18.5 inch |
Why Choose GCH
We take an approach that aims to meet your customized needs. We aim to provide long-term prototype overmolding solutions to engineering experts and project managers from design to production. GCH combines cost-effective mold tooling with tech-driven overmolding services that help to make high-quality parts.
No MOQ
No minimum order requirement helps move plastic molded parts from design to production in a fast turnaround and supports your on-demand molding manufacturing needs with reduced injection molding cost.
Tight Tolerance and High Quality
Our plastic injection molding process includes vital design considerations to improve moldability and enhance aesthetic appearance. GCH delivers plastic injection molded parts of varying sizes and complexities. Our standard tolerances are defined by ISO 2768 standards, helping us meet tight tolerance requirements.
High Efficiency
With certified domestic factories and a strong supply chain system, we accelerate the product development cycle and bridge the production of your injection molded parts as fast as possible.
Injection Molding Specialists
Working with our experts having 10+ years of experience in the injection molding industry, efficiently complete a turnaround from prototyping to production.
Our Precision Machined Parts for Various Industrial Applications
GCH partners with top industry manufacturers, streamlining supply chains through digitized custom precision CNC machining, bringing ideas into tangible products efficiently.
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