CNC Turning

Custom CNC Turning Services

Our turning process works great for machining the interior or exterior part of a material. Turning performed on the material exterior part is known as facing, while that done on the inside is known as boring.

Face Turning

End turning refers to the process of cutting the end face of a workpiece (i.e., the plane in the length direction of the workpiece) using a turning tool. The cutting direction is usually along the radial direction of the lathe spindle, that is, the tool moves from the outer radial center of the workpiece to machine a flat end face.

Boring Turning

Boring and turning is a turning method for enlarging and finishing inner holes. It uses a boring tool to cut the hole diameter based on the existing pre-drilled or cast hole to produce an inner hole with more accurate size and smoother surface.

CNC Turning With GM-PRE

With access to a network of over 10,000 manufacturers worldwide with CNC lathes and turning centers, Guanmei Pre provides you with the capacity and capabilities for your project needs, while also delivering the most competitive pricing and lead times.

Our machine learning-trained technology also provides instant manufacturability feedback to ensure that your part fits the requirements you need and is optimized for the CNC turning process. Our on-demand manufacturing platform can deliver high-quality metal or plastic turned parts in an amount from a single prototype up to hundreds of thousands of parts.

CNC Materials

Materials Available at Guanmei PRE

Available Surface Treatment

Anodizing/Hard Anodizing

Mainly used for aluminum alloy parts, it forms an oxide film through electrolysis to improve corrosion resistance, surface hardness and aesthetics.

Hard Anodizing is a thickened version with higher wear resistance and insulation, suitable for mechanical friction parts.

Nickel Plating

A layer of nickel metal is deposited on the surface of CNC metal parts to enhance corrosion resistance, wear resistance, and appearance brightness.

It is divided into chemical nickel plating (electroless nickel plating) and electrolytic nickel plating. The former is suitable for high-precision parts.

Zinc Plating

A layer of zinc is plated on the surface of steel parts to form an anode protection to prevent rust.

You can choose different appearances such as colored zinc, white zinc, and black zinc.

Black Oxide

A black oxide film is formed on the surface of steel or stainless steel, mainly providing mild rust prevention, anti-light reflection, and aesthetics.

It does not significantly change the size of the parts and is suitable for parts that require both appearance and rust prevention.

Electropolishing

Use electrochemical methods to dissolve small amounts of stainless steel or titanium alloy parts, making the surface smoother, cleaner and free of microburrs.

Improves corrosion resistance and cleanliness, commonly used in the medical, food, and electronics industries.

Blasting

Cleaning or roughening of surfaces with high-pressure blasting of sand/glass beads/ceramic particles, removal of burrs, scale or preparation of adhesion layers.

Suitable for surface pretreatment or matte effects.

Polishing

Grind and polish the metal surface by mechanical means to obtain a high-gloss, mirror-like or delicate surface.

It is mostly used for part appearance processing, decorative processing or surface roughness control.

Passivation

Mainly used for stainless steel, it removes free iron and impurities through chemical treatment, forms a more stable passivation film, and improves corrosion resistance.

It does not change the size, but can significantly extend the service life of parts.

Dacromet

It is a zinc-chromium coating that provides strong anti-corrosion protection on the surface of steel parts, especially suitable for salt spray environment.

It does not contain heavy metals, is more environmentally friendly, and is often used to replace electrogalvanizing.

Powder Coating

The dry powder is attached to the surface of the parts through electrostatic spraying, and then baked to form a strong, wear-resistant and corrosion-resistant coating.

It has various colors, is environmentally friendly and solvent-free, and is not easy to peel off.

Painting

Traditional surface coating method, you can choose different colors and paint types (such as anti-corrosion paint, high temperature resistant paint).

Used for aesthetics, identification, and basic protection purposes.

PVD

A very hard, thin, wear-resistant ceramic coating (such as TiN, CrN) is physically deposited on the metal surface.

It not only improves the surface hardness, but also achieves a metallic luster or black gold appearance.

MIL-A-8625F Type II anodizing improves corrosion resistance and can serve as a base for paint and other surface finish treatments.
Note: The anodizing effect may vary depending on the material.
Additional notes:
Dyes can be used to affect the surface color of the parts.
Type II coatings are prone to wear and may bleach or fade after prolonged exposure to direct sunlight.
Custom colors are available (Pantone).

Applications of CNC Turning

Rapid Tooling

CNC machining enables the quick production of prototype molds and tooling components with high precision. This makes it ideal for creating low-volume tooling used in test runs or bridge production before full-scale manufacturing begins.

Rapid Prototyping

It is an excellent choice for rapid prototyping due to its wide material compatibility, fast turnaround times, and low per-unit costs. It allows engineers and designers to quickly test form, fit, and function using production-grade materials.

Serial Production

With advanced multi-axis turning (±0.003mm) centers, automated tool changers, and optimized machining programs, we ensure stable output for medium to large-volume orders while keeping tight tolerances, high surface finishes, and short lead times.

Advantages of CNC Turning

CNC turning offers high precision, repeatability, and efficiency for producing complex parts from a wide range of materials.

What is CNC Turning

CNC Turning is a precision machining process that rotates a workpiece on a spindle while a cutting tool removes material to create cylindrical or conical shapes. Controlled by computer numerical code (G-code), it delivers unmatched accuracy (±0.005 mm) for industries like aerospace, medical, and automotive.

The Basics of CNC Lathes

A CNC lathe consists of core components designed for automated, high-precision operations:

Spindle:

Rotates the workpiece at 50–5,000 RPM (varies by material and diameter).
Hydraulic or pneumatic chucks secure parts ranging from 5 mm to 500 mm in diameter.

Turret:

Holds 8–12 cutting tools (turning, drilling, threading) for multi-operation machining.
Automatic tool changes (ATC) reduce setup time by 70%.

Guideways:

Linear or box-type guideways ensure rigidity during heavy cutting (e.g., hardened steel).
Positioning accuracy: ±0.002 mm (with laser calibration).

Control Panel:

Fanuc, Siemens, or Mitsubishi systems for real-time monitoring and adjustments

How CNC Turning Works

1. CAD/CAM Design:

Convert 3D models into G-code using software like Mastercam or SolidWorks.
Optimize toolpaths for minimal material waste (nesting efficiency ≥85%).

2.Workpiece Setup:

Mount raw material (bar stock, casting) onto the spindle.
Align using touch probes (accuracy ±0.001 mm).

3.Machining Operations:

Facing: Create flat surfaces (Ra 0.8–3.2 μm).
Turning: Reduce diameter to target dimensions (±0.01 mm).
Drilling/Tapping: Add holes or threads (M1–M30).
Grooving/Parting: Cut slots or separate finished parts.

4.Real-Time Monitoring:

Sensors detect tool wear, auto-adjust feed rates for consistency.

5.Post-Processing:

Deburring, anodizing, or passivation for enhanced functionality.

Why Choose GM-PRE For Custom Milling

Material Versatility

GM-PRE masters the machining of 40+ materials, from aerospace-grade titanium (Ti-6Al-4V) to medical high-temperature Inconel. Whether you need lightweight aluminum for automotive chassis, biocompatible stainless steel (316L) for surgical tools, our expertise ensures optimal material performance.

Cross-Industry Expertise

With 15+ years of experience, GM-PRE delivers precision-milled components for aerospace, medical, automotive, and other sectors. We can craft titanium engine mounts for supersonic drones and micro heat sinks for AI servers, our engineers understand industry-specific challenges.

Quality Assurance & Certifications

Every GM-PRE part is backed by ISO 9001, ISO 16949 certifications, with full traceability from raw material to final inspection. Our 100% dimensional checks (CMM/3D scanning), X-ray testing for aerospace welds, and RoHS-compliant finishes guarantee reliability.

We are fully aware of the key role of CNC Turning in modern manufacturing, so we provide a series of high-quality services closely related to CNC Turning. For different materials, such as stainless steel, brass, etc., we have professional Stainless Steel CNC Turning and Brass Precision CNC Turning services to ensure all kinds of materials can be finely processed.

In terms of complex processes, Multi-Axis CNC Turning (±0.003mm) can cope with the processing needs of various complex shapes with its high precision and multi-axis operation. At the same time, we also provide a variety of process combinations, such as CNC Turning + Electropolishing and CNC Turning + Nickel Plating, to give the product better performance and appearance. Whether for small-batch customization needs or large-scale industrial production, our CNC Turning services can meet your requirements and provide reliable support for your project.

CNC Turning

Custom CNC Turning Services

Face Turning

Boring Turning

CNC Turning With GM-PRE

CNC Materials

Aluminum

Brass

Copper

Stainsteel