When you need a one-stop CNC machine shop for CNC turning services at the lowest costs, fast lead times, and without requirements for minimum order quantity, Runsom may match the capacity your project demands exactly. The instant manufacturability feedback offered by Runsom's professional technological team allows for optimizing your custom CNC machined parts for the CNC turning process and fulfilling all requirements you need.
At Runsom, you can experience incredible CNC turning service, CNC lathe services and receive high-quality metal or plastic CNC turned parts for rapid prototyping or small-to-large volume production. Start your project with an instant quote.
How CNC Turning Works
CNC turning (also known as CNC lathes) is a subtractive manufacturing process in which a stationary cutting tool removes material by making contact with the spinning workpiece to create the desired shape.
During CNC turning, a cylindrical bar of stock material is clamped in the spindle chuck and rotated at high speed. The cutting tools then move according to precise computer-controlled instructions, ensuring exceptional accuracy, repeatability, and consistency throughout the machining process.
When CNC turning rotates the workpiece in a chuck, it’s generally to create round or tubular shapes and achieve far more accurate rounded surfaces than CNC milling or other machining processes. Know more about the difference between CNC milling and CNC turning.
The main vital components of a CNC turning center:
- Chuck: Fixes the bar of stock material for machining
- Spindle: Rotates the chuck across axes for material forming.
- Turret: Moves the stock bar in line with the computer-aided manufacturing (CAM) blueprint or computer-aided design (CAD).
- Interface: Provides options for the operator to control and use the turning centers.
Advantages of CNC Turning
CNC lathe machines also referred to as live tooling lathes, are perfect for creating any symmetrical cylindrical or spherical parts with high accuracy and excellent repeatability at a high speed.
Although typically used for specific shapes of parts, CNC turning can still be used for various cutting, such as drilling, boring, threading, and knurling.
The machine can obey strict measurements and eliminate the waste of natural human errors by integrating CAD or CAM files into the process, which may help to save costs and improve productivity, etc.
CNC turning centers have great flexibility for a variety of applications since they offer a range of dimensional capabilities. For example, our turning centers are equipped in 18 to 0.5 inches in diameter to meet nearly all needs of our customers.
CNC lathes provide excellent repeatability by producing product batches with unmatched accuracy, allowing your business to maximize output and reduce losses.
Why Choose Runsom for CNC Turning Service
Rapid Lead Times
Equipped with advanced CNC machines, we can deliver rapid CNC-turned parts in as fast as 3 days with high accuracy.
Available Materials
Choose from over 50 certified metal and plastic materials suitable for CNC turning.
Great Scalability
Our CNC lathe services are ideal for rapid prototyping or low-to-high volume production of 1-10,000 parts.
High Precision
Our tolerances range from +/-0.001″ – 0.005″, which is greatly influenced by the part’s geometry and material type.
Various Surface Finishes
Abundant choices for surface finishing on solid metal or plastic turned parts in accordance with all critical design specifications.
Extensive Experience
Our engineering team has vast experience from numerous previous projects, they are proficient in making intricate and accurate components for various industries.
Runsom CNC Turning Capabilities
Our CNC turning capabilities combine high precision, flexibility, and efficiency. We leverage advanced live-tooling CNC lathes to manufacture custom CNC turned parts, from simple shafts to complex geometries with rapid turnaround and exceptional accuracy.
Here is an overview of our CNC turning capabilities:
Machine & Tooling
State-of-the-art CNC lathes with live tooling for milling, drilling, threading & grooving on the lathe.
Multi-axis turning centers capable of handling complex profiles in a single setup, reducing secondary operations.
Materials Supported
Metals: Aluminum, Stainless Steel, Brass, Titanium, Copper, etc.
Engineering Plastics: POM, Nylon, PTFE, PEEK, etc.
Dimensional Precision & Tolerances
Standard tolerances in the range of ±0.01 mm to ±0.05 mm for most features.
High-precision machining down to ±0.001 mm ~ ±0.005 mm possible on request with proper setup and inspection.
Size & Volume Capacity
Supports a wide range of part sizes — from small-diameter components to larger cylindrical parts.
Flexible capacity: prototype runs, low-volume batch, up to production-scale turning.
Surface Finish
Excellent surface quality on turned parts, capable of achieving fine finishes (Ra values depending on material and tooling).
Repeatability & Consistency
Each part is machined with consistent precision across batches thanks to CNC automation and quality control.
Quality inspection using tools like CMM or precision gauges to verify critical dimensions.
Complex Features & Multi-Operation Turning
Live-tooling allows in-process operations: drilling, tapping, grooving, threading — all on the same machine, reducing setup time and improving efficiency.
Ability to produce parts with complex geometry: cross holes, flats, undercuts, slots.
Lead Time
Fast lead times: capable of delivering prototype or small batch turned parts within days, subject to part complexity and order size.
Materials for CNC Turning
We stock a wide range of metal and plastic materials to make turned parts for a variety of applications and industries.
Alloy Steel 4130
Alloy Steel 4140
Aluminum 5052
Aluminum 7075
Aluminum 7075-T6
Aluminum 6063-T5
Aluminum 7050-T7451
Aluminum MIC-6
Aluminum 6061-T6
Aluminum 2024-T3
Brass C360
Brass 260
C932 M07 Bearing Bronze
Stainless Steel 15-5
Stainless Steel 17-4
Stainless Steel 18-8
Stainless Steel 303
Stainless Steel 304
Stainless Steel 316/316L
Stainless Steel 416
Stainless Steel 420
Titanium Grade 2
Titanium 6Al-4V
ABS
POM
PP
PMMA
PTFE
PEI
PEEK
Polycarbonate
Nylon
Finishing Options for Turned Parts
Without any surface treatment processing methods, the parts will leave visible tool marks and burrs, which can be completed quickly and cost-saving.
A surface treatment process to obtain a certain degree of cleanliness and different roughness on the surface of the workpiece. The surface after sandblasting is dull and matte.
Many colors（such as black, red, blue, etc.）are available. Divided into Type II (normal) and Type III (hard), Type III is usually thicker than Type II and more corrosion resistant.
The powdered paint is sprayed onto the surface of the workpiece by electrostatic spraying to form a powdery coating, and then the powder layer is cured by heating and baking to level it into a uniform film layer. It is usually used for appearance parts, and a variety of colors is available.
Request an instant RFQ and we will offer you the appropriate surface finish for your project if you still do not see the finish you are looking for.
Applications of CNC Turning
Rapid Prototyping
CNC turning is widely used as a means of rapid prototyping, given its short turnaround times and a variety of affordable and available materials.
Batch Production
A delicate finish, extensive material selection, and tight tolerances make CNC lathes turning an advantageous technology for mass-producing parts.
Rapid Tooling
CNC turning can cut virtually any material with a high variety of fully dense, so it is ideal for fabricating metal tooling for injection molding, fixtures, stamping, bending, high-pressure die casting, blow molding, etc.
CNC Turning Design Guidelines
The table below summarizes the recommended values and essential design considerations to help to improve cosmetic appearance, enhance part manufacturability, and lower overall production time.
| 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 |
CNC Turning Parts Gallery
CNC Turning FAQs
Turning involves a process where CNC lathes cut the bar of stock material into circular shapes. The workpiece is placed in the lathe and rotated while the tool removes the material until only the desired shape is left.
Turning is an ideal choice for producing cylindrical parts, mainly using round bar stock, but square and hexagonal ones can also be used.
CNC turning is a method for making symmetrical cylindrical parts. Typical examples are shafts, gears, knobs, tubes, etc. CNC turned parts are usually applied to various applications and industries like aerospace, medical, automotive, and other industries.
Rough turning brings the workpiece close to the desired shape by removing as much material as possible without focusing on precision and surface finish, while finish turning produces the required accuracy and smoothness.
CNC lathes are usually two-axis machines with only one spindle. Their production capacity is not high, and there is usually no protective casing around the machine. A CNC turning center is a more advanced version of a CNC lathe, with up to 5 axes and a more general cutting capacity. They also provide the ability to produce larger volumes, often integrating milling, drilling, and other functions.
Standard turned finishes include:
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Smooth turned finish
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Fine machining finish (low Ra value)
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Threaded surfaces
Optional secondary finishing: -
Anodizing
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Electroplating
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Polishing
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Sandblasting
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Passivation
Lead times depend on part complexity and quantity, but most prototypes or small batches can be produced within 3–7 days.
Large-volume orders may require additional time, but Runsom prioritizes fast delivery.
To improve manufacturability:
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Keep designs axisymmetric where possible
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Avoid unnecessary deep cuts
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Add fillets instead of sharp corners
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Follow standard thread sizes
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Include tolerances only where required
Runsom engineers can review and optimize your design during quoting.
Related Resoures about CNC Turning
The Distinctive Characteristics of CNC Milling and Turning
Lathe Cutting Tools for CNC Turning: Types, Geometry, and Features
