HL Parts | Ultra-high Precision Mechanical Machining Parts Manufacturer a1

HL Parts CNC Turning Machine Inside
CNC Turning
We have strict standard for CNC Turning
With hundreds of manufacturers in our network, we have a very broad range of manufacturing capabilities and support both one-off prototyping and low-volume production. We pride ourselves on being the go-to manufacturer for geometrically complex parts or highly cosmetic parts.With hundreds of manufacturers in our network, we have a very broad range of manufacturing capabilities and support both one-off prototyping and low-volume production. We pride ourselves on being the go-to manufacturer for geometrically complex parts or highly cosmetic parts.

Maximum Part Size For CNC Turning

Part size limitationsMetric unitsImperial units
Maximum part diameter825 mm32.48 in
Maximum part length1500 mm59 in
Maximum swing over the carriage430 mm16.93 in
Maximum spindle through-hole65 mm2.56 in

The maximum speed is 6000RPM, the maximum load-bearing capacity is 2T, and the minimum compensation parameter is 0.0001mm.


Tolerance

CNC Turning Tolerances

We follow ISO 2768 standards for CNC machining.

Limits for nominal sizePlastics (ISO 2768- f)Metals (ISO 2768- f)
0.5mm* to 3mm±0.05mm±0.05mm
Over 3mm to 6mm±0.05mm±0.05mm
Over 6mm to 30mm±0.1mm±0.1mm
Over 30mm to 120mm±0.15mm±0.15mm
Over 120mm to 400mm±0.2mm±0.2mm
Over 400mm to 1000mm±0.3mm±0.3mm
Over 1000mm to 2000mm±0.5mm±0.5mm
Over 2000mm to 4000mm±1mm

*Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing.

CNC Turning Design Guidelines
Check the recommended and technically feasible values for the most common features of parts produced with precision CNC turning.
FeatureRecommended sizeFeasible size
Min. feature sizeØ 2.5 mmØ 0.50 mm
Internal edgesR 8 mmR 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)

HolesDiameter: standard drill bit sizes Depth: 4 x diameterDiameter: Ø 0.5 Depth: 10 x diameter
ThreadsSize: M6 or larger Length: 3 x diameterSize: M2
CNC Turning Materials

Available materials for CNC turning

Plastic
PMMA
PET
PEEK
ABS
PC
PEI
PA
POM
Metal
Bronze
Aluminum
Cooper
Steel
Stainless Steel
Titanium
Magnesium
Brass
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PMMA

PMMA (Polymethyl Methacrylate), also known as acrylic, is a transparent thermoplastic with excellent optical clarity, UV resistance, and weatherability. It is widely used in applications such as optical lenses, signage, and display panels due to its glass-like properties and lightweight nature.


Appearance
Transparent, translucent, or opaque, available in clear, colored, or frosted finishes.



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PET

PET (Polyethylene Terephthalate) is a high-performance thermoplastic polyester with outstanding mechanical properties, clarity, and barrier resistance to gases and moisture. It is predominantly used in beverage bottles, food packaging, and synthetic fibers for textiles.


Appearance
Transparent or opaque, often clear or custom-colored for packaging and industrial applications.

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PEEK

PEEK (Polyether Ether Ketone) is a high-performance engineering thermoplastic renowned for its exceptional mechanical properties, chemical resistance, and thermal stability, even at elevated temperatures (up to 260°C/480°F). It exhibits excellent wear resistance, low moisture absorption, and biocompatibility, making it ideal for demanding applications in aerospace, automotive, medical implants, and oil and gas industries.


Appearance
Opaque, typically available in natural (beige/tan), black, or custom-engineered colors, with a smooth surface finish.

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ABS

ABS (Acrylonitrile Butadiene Styrene) is a tough, impact-resistant thermoplastic with good mechanical properties and processability. It is commonly used in automotive components, consumer electronics, and 3D printing due to its balance of strength, rigidity, and surface finish.


Appearance

Opaque, typically available in white, black, or custom colors.

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PC

PC (Polycarbonate) is a high-performance thermoplastic known for its exceptional impact strength, optical clarity, and thermal resistance. It offers excellent dimensional stability and electrical insulation properties, making it suitable for applications such as safety glasses, electronic components, automotive parts, and medical devices.


Appearance
Transparent, translucent, or opaque, available in clear, colored, or custom-engineered finishes.

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PEI

PEI (Polyetherimide) is a high-performance engineering thermoplastic known for its exceptional thermal stability, mechanical strength, and flame resistance. It is used in demanding applications such as aerospace components, medical devices, and electrical insulators due to its ability to withstand high temperatures and harsh environments.


Appearance
Opaque, usually amber or black, with a smooth surface finish.

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PA

PA (Polyamide), or polyamide, is an engineering thermoplastic characterized by high mechanical strength, thermal stability, and excellent resistance to wear and abrasion. It is commonly utilized in high-performance applications such as gears, bearings, and structural components in automotive and aerospace industries.


Appearance
Typically opaque, available in natural (off-white), black, or custom-engineered colors.

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POM

POM (Polyoxymethylene) also known as acetal or polyacetal, is a high-strength, low-friction thermoplastic with excellent dimensional stability and wear resistance. It is commonly used in precision parts such as gears, bearings, and conveyor systems due to its durability and low moisture absorption..


Appearance
Opaque, typically white, black, or natural (off-white), with a smooth, glossy surface.

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Bronze

PMMA is known as a 50% lighter, clearer, more affordable, shatter-resistant alternative to glass.CNC machined PMMA or acrylic is commonly used for automotive lights and windows to smartphones screens.


PMMA is known as a 50% lighter, clearer, more affordable, shatter-resistant alternative to glass.CNC machined PMMA or acrylic is commonly used for automotive lights and windows to smartphones screens.

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Aluminum
Aluminum is a lightweight, non-ferrous metal with excellent corrosion resistance, high strength-to-weight ratio, and good thermal and electrical conductivity. It is commonly used in aerospace, automotive, packaging, and construction industries.


Appearance
Silvery-white, often with a matte or polished finish, and can be anodized for additional color options.

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Cooper

Copper is a highly conductive, ductile metal with excellent thermal and electrical properties. It is widely used in electrical wiring, electronics, plumbing, and heat exchangers due to its reliability and efficiency.


Appearance
Metallic, reddish-orange with a distinctive luster, often developing a green patina over time when exposed to air.

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Steel

Steel is an iron-based alloy containing carbon and other elements, known for its high strength, durability, and versatility. It is used in construction, automotive manufacturing, tools, and machinery due to its adaptability and cost-effectiveness.


Appearance
Metallic, silvery-gray, often with a matte or polished finish, and can be coated or treated for enhanced properties.

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Stainless Steel

Stainless steel is a corrosion-resistant alloy of iron, chromium, and other elements, offering high strength, durability, and hygiene. It is widely used in kitchenware, medical instruments, construction, and chemical processing industries.


Appearance
Metallic, silvery with a polished or brushed finish, maintaining its luster even in harsh environments.

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Titanium
Titanium is a lightweight, high-strength metal with exceptional corrosion resistance and biocompatibility. It is used in aerospace, medical implants, and marine applications due to its durability and ability to withstand extreme conditions.


Appearance
Metallic, silvery-gray with a matte or polished finish, often exhibiting a slight sheen.

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Magnesium

Magnesium is a lightweight, highly reactive metal with excellent strength-to-weight ratio and good machinability. It is used in automotive components, aerospace structures, and electronics due to its lightweight and damping properties.


Appearance
Metallic, silvery-white with a dull or slightly shiny surface, often coated to prevent oxidation.

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Brass
HL Parts Machining Surface Finishes
CNC Turning Surface Finishing

Anodizing

Polishing

Black Oxide

Powder Coating

Smooth Machining

View Full CNC Finished List

Application of CNC Turning Machining

Industrial Equipment
Sports
Automative
Robotics & Automation
Medical
Consumer Products
Aerospace & UAV
Tooling & Industrial manufacturing

Precision machining produces CNC-machined gearboxes and hydraulic valve bodies with micron-level tolerances, ensuring optimal power transmission and fluid control. These components enhance operational efficiency, reduce wear, and minimize downtime in heavy-duty equipment.

Industrial equipment
Sports

Titanium bicycle cranks and carbon fiber golf club heads deliver lightweight, high-strength performance, improving athlete precision and endurance while maintaining durability.

Sports
Automative
Harmonic drive systems and aluminum actuator housings enable precise motion control and lightweight design, critical for advanced automation and robotic applications.
Automative
Robotics & Automation

High-precision engine pistons and transmission gears are crafted for tight tolerances, enhancing fuel efficiency, reducing emissions, and ensuring reliable vehicle performance.

Robostics&automation
Medical
We machining creates titanium orthopedic implants and stainless steel surgical instruments, ensuring biocompatibility, sterilization compliance, and precise functionality for patient safety.
Medical
Consumer Products
Precision-machined aluminum smartphone frames and ceramic watch bezels combine durability with aesthetic appeal, enhancing user experience and product longevity.
Consumer product
Aerospace & UAV
Turbine blades and airframe components are crafted from advanced alloys like Inconel, offering high strength-to-weight ratios and thermal resistance for extreme aerospace conditions.
UAV

CNC Turning FAQ

Any confusion?
Click to answer your question
What is CNC Turning Machining

CNC turning is a machining process where a rotating workpiece is shaped by a stationary cutting tool. It’s used to produce cylindrical parts with precise dimensions, surface finishes, and complex geometries through automated control of speed, feed, and tool movement

How to Perform Final Quality Inspection of Turning?

1. Dimensional Inspection: CMM used to ensure the part dimensions meet the drawing requirements.  

2. Surface Roughness Inspection: A surface roughness tester is employed to measure critical surfaces.  

3. Geometric Tolerance Inspection: Gauges or CMM are used to check geometric tolerances such as roundness, cylindricity, and concentricity.  

4. Visual Inspection: Surface defects (e.g., scratches, burrs) are inspected visually or with magnification, followed by polishing or deburring if necessary.  

5. Functional Testing: Critical parts undergo assembly or functional testing to ensure their performance in real-world applications.  

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