CUSTOM CNC TURNING SERVICE ONLINE

Precision CNC Turning from 4 In-House Factories

Partner with Unionfab, a China–based CNC turning company integrating in-house manufacturing and vetted supplier networks to get precision CNC turned parts with tight tolerances, consistent quality, and cost-effective production, from simple round parts to complex turned components.

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STEP | STP | IGS | DWG | DXF | PDF Files and More

CNC Turning Instant Quote

No MOQ • ISO 27001 Certified • Free DFM Analysis

Excellent4.7 out of 5

MACHINING CAPABILITY

3/4/5AXIS

Advanced vertical and horizontal CNC milling, turning, and gantry turn-mill machining.

PRECISION

±0.0002"

ISO 2768-m (Default); Custom tight tolerances down to ±0.0002" (±0.005 mm).

MANUFACTURING SCALE

400+

400+ advanced CNC machining centers (Mazak, DMG MORI, Makino etc.) in 4 in-house facilities.

CERTIFIED

ISO

ISO 9001, 14001, 13485 & IATF 16949 certified with NDA-secured manufacturing workflows.

Why Choose Unionfab for Your CNC Turning Projects?

Extensive Capacity for Diverse Part Sizes

Whether you need micro-precision pins or large-diameter heavy-duty steel shafts, Unionfab's extensive lineup of advanced CNC turning centers is scaled to match your exact dimensional requirements and production volumes.

High Rigidity, Superior Finishes

Our highly rigid turning equipment minimizes vibration to ensure ultra-tight diametric tolerances. We consistently deliver a clean, fresh fabricated look straight off the machine, free of scratches or oxidation marks.

Cost-Effective, Uncompromised Quality

Unionfab's turning operations are optimized for material efficiency and high-throughput production, delivering highly competitive pricing compared with many US and European providers, while maintaining the same rigorous machining standards your parts demand.

ISO-Certified Quality & Runout Control

Backed by ISO 9001, 14001, 13485 & IATF 16949, our inspection process guarantees rotational precision. We ensure strict adherence to your exact specifications for concentricity, outer/inner diameters (OD/ID), and total indicator runout (TIR).

Visit Unionfab CNC Machining Factories Online

3 Axis Machining Factory

4 Axis Machining Factory

5 Axis Machining Factory

CMM Inspection Room

CNC Turning Materials

We offer an extensive variety of high-quality CNC materials, carefully selected to ensure optimal performance across your diverse applications.

CNC Turning Metals

Choose from Unionfab's 60+ high-performance alloys including aluminum, stainless steel, brass, copper, titanium, and others for strong, precise, production-ready parts.

High StrengthTight TolerancesFunctional End-Use Parts

Explore All CNC Turning Metals

CNC Turning Plastics

Choose from Unionfab's engineering plastics such as ABS, PC, POM, nylon, PEEK, and acrylic for lightweight, insulating, and wear-resistant components.

LightweightElectrically InsulatingWear-resistant

Explore All CNC Turning Plastics

CNC Turned Parts by Unionfab

CNC Turning Technical Specifications

Limits for nominal lengths	ISO 2768-m (Default)	ISO 2768-f
0.5mm to 3mm	±0.1mm	±0.05mm
Over 3mm to 6mm	±0.1mm	±0.05mm
Over 6mm to 30mm	±0.2mm	±0.1mm
Over 120mm to 400mm	±0.5mm	±0.2mm
Over 400mm to 1000mm	±0.8mm	±0.3mm
Over 1000mm to 2000mm	±1.2mm	±0.5mm
Over 2000mm to 4000mm	±2.0mm	-

While our instant quoting platform uses your 3D CAD files for geometric pricing, any custom dimensions, GD&T callouts, specific fits, or tight surface finishes MUST be explicitly detailed in an accompanying 2D PDF drawing.

Finishing Options for CNC Turning

A great part deserves a great finish. We offer a diverse selection of surface treatments to enhance the durability, functionality, and look of your CNC machined parts. Browse our capabilities below:

A mechanical surface treatment that bombards the part with fine glass beads at high pressure to remove tool marks and create a uniform, matte texture.

Best For:

Achieving a consistent, non-reflective aesthetic finish and hiding minor surface defects on consumer electronics, enclosures, or grip surfaces.

Explore All Finishing Options

Bead blasting surface treatment on a part by Unionfab

CNC Turning Applications

Automotive

From engine components and gear blanks to shafts, bushings, pins, and threaded parts, CNC turning ensures smooth operation, longevity, and precise tolerances for reliable vehicle performance.

Medical and Dental

CNC turning produces high-precision components including surgical instruments, orthopedic screws, dental drill heads, prosthetics, and implant parts, all manufactured to strict biocompatibility standards vital for successful procedures and long-term patient well-being.

Industrial Production

CNC turning serves as a manufacturing workhorse across industrial sectors, producing precision components such as pumps, valves, hydraulic fittings, bearing housings, and custom fixtures with consistent accuracy across both prototyping and high-volume production runs.

Pros and Cons of CNC Turning

High Efficiency for Rotational Parts

Optimized for axisymmetric components like shafts, bolts, and rollers, CNC turning removes material rapidly along the rotational axis for fast, efficient production.

Excellent Precision and Repeatability

Modern CNC lathes deliver tight, repeatable tolerances across thousands of parts, with precision determined by geometry, material, setup, and inspection requirements.

Superior Surface Finish

CNC turning typically delivers a smooth, consistent surface finish, reducing or eliminating the need for secondary polishing.

Material Versatility

Compatible with a wide range of metals including aluminum, stainless steel, brass, copper, and titanium, as well as engineering plastics such as POM, PEEK, PTFE, and ABS.

High Setup and Tooling Costs

CNC turning can involve significant setup, tooling, and fixturing costs, especially for low-volume runs or simple parts that don't justify the investment.

Specialized Programming Required

CNC turning accuracy depends on precise CAD/CAM programming and process planning, which adds setup time and complexity before production can begin.

Quality Assurance & Inspection

We adhere to a strict multi-stage inspection protocol to ensure every part meets your exact specifications.

Full FAI Documentation:

Every order includes a First Article Inspection report (upon request).

Precision Metrology:

We utilize state-of-the-art CMM (Coordinate Measuring Machines), profilometers for surface roughness, and calibrated hand tools.

Traceability:

All material certifications and heat treatment reports are archived and available for audit.

Standards Compliance:

Our quality systems are aligned with international ISO 9001 standards, covering dimensional, geometric (GD&T), and material requirements.

For more details on our quality standards, check out our Inspection Checklist (including both standard and premium options).

FAQs About CNC Turning

We accept both 3D models and 2D drawings. For instant geometry analysis and baseline pricing, please upload your 3D CAD files in STEP, STP, or IGS formats. If your part requires specific tight tolerances, GD&T callouts, or threaded holes, a supplementary 2D drawing in PDF, DWG, or DXF format is required.

We have no strict Minimum Order Quantity (MOQ = 1). Whether you need a single rapid prototype for design validation or a low-volume production run of thousands of parts, our flexible manufacturing network is built to scale with your project efficiently and cost-effectively.

Our standard manufacturing lead time for most CNC projects is 5 business days. For exceptionally simple parts or urgent prototyping needs, we can expedite production and ship in as fast as 1 day. (Please note: Lead times may vary depending on part complexity, total quantity, and any secondary surface finishes required.)

100% Yes. We take intellectual property (IP) protection and data security incredibly seriously. We are proudly ISO 27001 Certified for information security management. Your files are encrypted and shared exclusively with essential engineering staff. We are also fully prepared to sign your Non-Disclosure Agreement (NDA) before you share any CAD files.

Absolutely. By default, every order includes a standard Dimensional Tolerance Report. For production volume orders, we supply comprehensive First Article Inspection (FAI) reports. If your critical components require ultra-precision metrology, full CMM (Coordinate Measuring Machine) inspection is available for an additional fee.

For a deep dive into our quality control processes, please read our guide on Unionfab QC & Inspection Capabilities.