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Our CNC turning service capabilities
From prototyping to full production runs. Our wide range of CNC lathes and turning centers will allow you to produce highly accurate, high quality parts to meet even your most stringent requirements.
Can’t decide which machining process is best for you? Upload your CAD file for a free quote and manufacturability review that will identify any difficult-to-turn features.
CNC lathe
CNC turning machines are able to provide low cost parts for simple cylindrical geometries. Live tooling is available for more complex geometries and is assessed on a case by case basis.
Maximum capabilities for CNC turning
| Part size limitations | Metric units | Imperial units |
|---|---|---|
| Maximum part diameter | 431 mm | 17 in |
| Maximum part length | 990 mm | 39 in |
| Maximum swing over the carriage | 350 mm | 13.7 in |
| Maximum spindle through-hole | 40 mm | 1.5 in |
Maximum speed: 1700RPM Motor power: 640W
Upload your parts to get a free quote
Available materials for CNC machining
Here is a list of our standard CNC machining materials available through our online platform.
CNC Metals
| Aluminum | Stainless steel | Mild, Alloy & Tool steel | Other metal |
|---|---|---|---|
| 6061-T6 | 303 | Mild steel 1018 | Brass C360 |
| 6082 | 304 | Mild steel 1045 | Copper C101 |
| 7075-T6 | 316L | Mild steel A36 | Copper C110 |
| 5083 | 2205 Duplex | Alloy steel 4140 | Titanium Grade 1 |
| 5052 | 17-4 | Alloy steel 4340 | Titanium Grade 2 |
| 2014 | 15-5 | Tool steel O1 | Invar |
| 2017 | 416 | Tool Steel A2 | Inconel 718 | 6063 | 420 | Tool Steel A3 | Magnesium AZ31B |
| 7050 | 430 | Tool Steel D2 | A380 | 440C | Tool Steel S7 | MIC 6 | 301 | Tool Steel H13 |
CNC Plastics
| Plastics | Reinforced Plastic |
|---|---|
| ABS | Garolite G-10 |
| Polypropylene | Polypropylene (PP) 30%GF |
| Nylon 6 | Nylon 30%GF |
| Delrin (POM-H) | FR4 |
| Acetal (POM-C) | |
| PVC | |
| HDPE | |
| UHMWPE | Polycarbonate | PET | PTFE (Teflon) |
Available surface finishes for CNC machining
Surface finishes are applied after machining and can change the appearance, surface roughness, hardness and chemical resistance of the produced parts.
| Name | Description | |
|---|---|---|
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As Machined (standard) | ~125 RA µin (3.2 RA µm). Minor tool marks will be visible on the part. |
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Smoothed | Parts are machined at a lower feed rate in order to achieve a surface roughness of ~62.5 RA µin (1.6 RA µm). Surface roughness can be decreased up to ~32 RA µin (0.8RAµm) upon request. |
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Bead Blasted | Bead blasting adds a uniform matte or satin surface finish on a machined part, removing all tool marks. Mainly used for aesthetic purposes. |
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Anodized Clear or Color (type II) | Anodizing adds a thin, hard, non-conductive ceramic coating on the surface of aluminum parts, increasing their corrosion and wear resistance. Available in a variety of colors. |
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Anodized Hardcoat (type III) | Hardcoat anodizing produces a thicker ceramic coating providing excellent corrosion and wear resistance. for functional applications. |
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Powder Coated | Powder coating adds a thin layer of strong, wear and corrosion resistant protective polymer paint on the surface of a part. Available in a large range of colors. |
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Electropolished | Electropolishing is an electrochemical process used to polish, passivate and deburr metal parts. It is useful to reduce surface surface roughness. |
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Black oxide | Black oxide is a conversion coating used to improve corrosion resistance and minimize light reflection. |
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Chromate conversion coating (Alodine/Chemfilm) | Chromate conversion coating is used to increase the corrosion resistance of metal alloys while maintaining their conductive properties. |
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Brushing | Brushing is produced by polishing the metal with grit resulting in a unidirectional satin finish. |
Other surface finishes are also available. Learn more about our metal and plastic surface finishing capabilities here.
Tolerances
The table below summarizes the standard tolerances of the parts produced by certified 3D Hubs Manufacturing Partners. Tolerances up to .0008” (0.020mm) are available upon request.
| Part size / Dimension | Tolerance | Angularity |
|---|---|---|
| < 12’’ (300 mm) | ± .005’’ (0.125 mm) | ± 0.5° |
| < 24’’ (600 mm) | ± .010’’ (0.250 mm) | ± 1.0° |
| < 36’’ (900 mm) | ± 1/64’’ (0.400 mm) | ± 1.0° |
Tightest tolerance: ±.0008’’ (0.020 mm) Tighter tolerances are examined on a case by case basis with your technical drawings.
CNC turning design guidelines
The table below summarizes the recommended and technically feasible values for the most common features encountered in CNC machined parts.
Learn more in our Engineering Guide to CNC machining.
| Feature | Recommended size | Feasible size |
|---|---|---|
| Min. feature size | Ø 2.5 mm | Ø 0.50 mm |
| Internal edges | R 8 mm | R 0.25 mm |
| Minimum wall thickness | 0.8 mm (for metals) 1.5 mm (for plastics) | 0.5 mm (for metals) 1.0 mm (for plastics) |
| Holes | Diameter:standard drill bit sizes Depth: 4 x diameter | Diameter: Ø 0.5 Depth: 10 x diameter |
| Threads | Size: M6 or larger Length: 3 x diameter | Size: M2 |
Quality assurance
- ISO9001 certified Manufacturing Partners on request
- Inspection report included in every order. Full dimensional inspection reports on request
- Material certifications and test reports available on request
- Batch inspection in concurrence with ISO2859
- Strict NDA agreements with all Manufacturing Partners
- Manufacturing Partner performance tracking on lead time and quality
Matt Farr
UK Strategic Account Manager
Jennifer Kaari
US Strategic Account Manager
David Nguyen
EMEA Sales Engineer
For businesses of all sizes
Get in touch with our team to access these services:
- Add 3D Hubs as a vendor
- ISO 9001, material certifications, test reports and full dimensional reports
- Non-disclosure agreements
- Urethane casting and part marking
- Sample verification program (learn more)
- Dedicated account manager
Call us directly on , or email us at sales@3dhubs.com
Get your parts CNC turned in as fast as 5 days
Upload your designs and get instant feedback on manufacturability, suggesting the best process based on your parts design.
