CNC Turning | Custom Parts & Production Parts

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CNC Turning Capabilities

CNC turning is one of the most efficient methods for producing cylindrical or symmetrical parts with high precision and repeatability.

2-Axis CNC Lathe

2-axis CNC lathe offers an excellent balance of accuracy, efficiency and cost control, especially for producing round or symmetrical components in medium to high volumes.

Multi-Axis Turning Center

Multi-axis turning center is the go-to solution for producing complex, high-precision parts in fewer steps. It provides unmatched efficiency, accuracy and cost savings.

Swiss-Type Lathe

Swiss-type lathe is a high-precision CNC turning machine designed to machine small, slender and complex parts with extreme accuracy, especially in large volumes.

Tolerances for CNC Turning

CNC turning is essential in industries where precision, speed and scalability matter. Understanding and properly specifying tolerances allows us to balance the need for accuracy with the realities of machining capabilities and production efficiency.

Machine Type	Typical Tolerances	Best-Case Tolerances	Notes / Capabilities
2-Axis CNC Lathe	±0.025 mm (±0.001 in)	±0.010 mm (±0.0004 in)	Best for simple cylindrical parts, less suited for off-center or multi-surface features.
Multi-Axis Turning Center	±0.012 mm (±0.0005 in)	±0.005 mm (±0.0002 in)	Ideal for complex geometries and reduced setups, includes milling and drilling operations.
Swiss-Type Lathe	±0.005 mm (±0.0002 in)	±0.002 mm (±0.00008 in)	Exceptional for small, high-precision, high-volume parts, excels in tight tolerance work.

CNC Turning Design Guidelines

Read our design guidelines to optimize production efficiency.From precision prototypes to high-volume production runs, our experts offer immediate feedback to ensure optimal results.

Design Feature	Recommended Guideline	Reason / Benefit
Minimum Wall Thickness	≥ 0.5 mm (metal), ≥ 1.0 mm (plastic)	Prevents deformation and chatter during turning.
Minimum Diameter	≥ 1.0 mm for features	Ensures tool accessibility and stability.
Maximum Length-to-Dia. Ratio	≤ 3:1 (unsupported), up to 10:1 (with support)	Avoids part deflection and vibration during cutting.
Internal -s	Prefer M3 and larger Depth ≤ 2× diameter	Smaller threads are harder to machine and inspect.
External -s	Use standard thread profiles (e.g., ISO, UNF)	Ensures tool availability and quality control.
Grooves & Undercuts	Width ≥ 0.5 mm Depth ≤ 2× width	Maintains tool access and avoids stress risers.
Fillets / Radii	Add fillets ≥ 0.5 mm at internal corners	Reduces tool wear and improves part strength.
Surface Finish	Standard: Ra 3.2 µm (125 µin) Fine: Ra 0.8 µm (32 µin)	Define early to match function and minimize over-specifying.
Chamfers	Recommended for all sharp edges (e.g., 0.5 × 45°)	Improves safety, handling and assembly.
Tool Access	Avoid deep, narrow features Maintain open geometries	Facilitates tool entry and chip evacuation.
Parting Features	Avoid overly thin features near part-off area	Prevents damage during cut-off.

Why Choose Our CNC Turning Services

At Alcro, we deliver high-precision CNC turning solutions tailored to meet the exacting demands of modern manufacturing.Whether you're working on prototypes or scaling up for production, our turning capabilities offer unmatched quality, speed and value.

Precision You Can Rely On
Our CNC lathes—including 2-axis machines, multi-axis turning centers and Swiss-type lathes—are equipped to handle complex geometries and tight tolerances down to ±0.002 mm, ensuring every part meets your exact specifications.
Versatile Machining Capabilities
From simple shafts to multi-featured components, we combine turning, drilling, tapping and milling in one setup, streamlining production and reducing both cost and lead time.
Fast Turnaround & Scalable Production
Need quick prototyping or large-scale manufacturing? Our flexible production system allows for rapid delivery without sacrificing precision—whether it's one part or ten thousand.

Engineering Support at Every Step
Not sure how to optimize your part for turning? Our engineering team offers DFM feedback to help you reduce costs and increase efficiency—without compromising function or integrity.
Custom Finishing Services
Need your parts to look as good as they perform? We offer a range of finishing options including anodizing, powder coating, bead blasting, painting and polishing—tailored to your needs.
Strict Quality Control
We follow a rigorous inspection process with in-process checks and final dimensional validation. Every part that leaves our shop is built to perform and built to last.

Turn Your Designs Into Custom Parts Today

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Driven by customer-first mindset, fast response and technical excellence, we are committed to being your reliable, long-term partner in custom manufacturing.

sophia@alcrocn.com

+86 15338350382

6th North Street, Xiagang Community, Chang'an Town, Dongguan City, Guangdong Province, China.

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