Precision CNC Mill-Turn Service

Reliable CNC mill-turn service for cylindrical parts. ISO-certified, competitive pricing, and fast turnaround.

Our multi-axis capabilities enable us to handle your most challenging manufacturing requirements with efficiency and accuracy.

ISO 9001: 2015 Certified Processes

In-Process Inspection with CMM (Coordinate Measuring Machine)

ISO 13485: 2016 Medical Device

IATF 16949: 2016 Automotive AS 9100 Aerospace

No Minimum Order Quantities

Multi-Axis CNC Mill-Turn Machining

CNC mill turn machining integrates both milling and turning capabilities into a single machine, allowing for complete part production in one setup. Unlike traditional CNC processes that require moving workpieces between separate machines, mill turn centers perform multiple operations sequentially, maintaining precise alignment throughout the entire manufacturing process.

This advanced machining technology utilizes computer numerical control to guide cutting tools with exceptional precision. The integration of turning operations (where the workpiece rotates against a stationary cutting tool) and milling operations (where a rotating cutting tool removes material from a stationary workpiece) creates a versatile manufacturing solution for complex components.

Key Features of Mill-Turn Technology

Multi-axis capabilities
(3-axis to 5-axis)

Simultaneous machining operations

Single-setup part completion

Automated tool changing systems

Advanced CNC control systems

The Principle of Mill Turn Processing

Mill turn machining operates on a fundamental principle: combining rotational and stationary cutting processes in a synchronized workflow. This integration allows for seamless transitions between operations without repositioning the workpiece, maintaining critical tolerances and geometric relationships.

The process typically begins with turning operations to establish the basic cylindrical form of the part. The workpiece is held in a chuck and rotated while stationary cutting tools shape its exterior. Once the turning phase is complete, the machine transitions to milling operations, where rotating cutting tools create features such as slots, pockets, and contours.

What makes mill turn machining truly powerful is the ability to perform these operations in any sequence, with automatic tool changes and precise coordination between all machine axes. Advanced mill turn centers can even utilize sub-spindles to transfer parts mid-process, enabling complete machining of all surfaces without manual intervention.

Common Mill-Turn Machine Configurations

Horizontal Mill-Turn Centers

Ideal for longer, shaft-like components
Better chip evacuation for heavy material removal
Typically offers larger work envelopes
Common in aerospace and oil & gas industries

Vertical Mill-Turn Centers

Better for disc-shaped components, diameter 500mm-10m
Smaller footprint for space-constrained shops
Easier workpiece loading and unloading
Popular in automotive and medical device manufacturing

Other Types of Mill-Turn Equipments for Your Needs

Swiss-type lathe milling machine: Suitable for large-volume small precision parts with a diameter of up to 20mm.
CNC mill-turn machine: Combines turning and milling heads for machining parts with a diameter of 20-300mm.
CNC 5-axis mill-turn machine: Imported equipment with a turning head and a 360-degree rotating milling head for machining parts with a diameter of 20-300mm.

CNC Mill-Turn Technical Specifications

CNC Mill-Turn is highly valued for its precision, repeatability, and flexibility, making it a vital process for producing parts across numerous industries.

Machining Processes

Turning

External/internal diameters, facing, grooving, threading

★Applications: Cylindrical components, shafts, precision bores

Milling

Contouring, pocketing, slotting, drilling, tapping

★Applications: Complex geometries, features requiring interpolation

Multi-axis Machining

3+2 positioning, full 5-axis simultaneous

★Applications: Complex contoured surfaces, undercuts, angled features

Live Tooling

Driven tools for off-center operations

★Applications: Cross-holes, keyways, eccentric features

Machine Specifications & Tolerance Capabilities

Axis Configuration	3-axis to full 5-axis simultaneous
Maximum Part Diameter	Up to 24 inches (610mm)
Maximum Part Length	Up to 40 inches (1016mm)
Spindle Speed	Up to 12,000 RPM
Tool Capacity	40-80 tools depending on configuration
Positional Accuracy	±0.0001″ (0.0025mm)
Production Volume	Prototype to high-volume production
Dimensional Tolerance	±0.0005″ (0.0127mm) standard
Surface Finish	Down to 16 Ra micro-inches
Geometric Tolerances	Per ISO standards
Roundness	Within 0.0002″ (0.005mm)

Need Precision Parts?

Our advanced CNC mill turn capabilities deliver exceptional accuracy and efficiency for your complex components.

CNC Mill Turn Machining Materials

At Fecision, our advanced CNC mill turn centers are equipped to process a wide range of materials with precision and efficiency.

Our material expertise ensures optimal cutting parameters for each specific alloy or polymer, delivering superior surface finishes and tight tolerances.

Aluminum Alloys

Common grades include 6061, 7075, and 2024. They are favored for their ease of machining but require proper cleaning and protection post-processing due to oxidation.

Properties:

Lightweight
High strength-to-weight ratio
Good electrical and thermal conductivity
Corrosion resistant

Applications:

Aerospace: aircraft frames, engine components, wing structures
Automotive: engine blocks, cylinder heads, wheels
Electronics: heat sinks for electronic devices

Stainless Steel

Grades like 303, 304 and 316 are popular for their durability and aesthetic appeal, though they are more challenging and costly to machine.

Properties:

Excellent corrosion resistance
High strength
Heat resistant

Applications:

Medical: surgical instruments, implants, medical equipment
Food and Beverage: food-processing equipment, storage tanks, kitchen utensils
Architecture: building facades, handrails, structural components

Titanium Alloys

Titanium combined with elements like aluminum or vanadium for enhanced strength and biocompatibility.

Properties:

Exceptional strength-to-weight ratio.
Biocompatible and corrosion-resistant.
High melting point.

Application:

Aerospace: Jet engine components, airframes.
Medical: Orthopedic implants, dental devices.
Chemical Processing: Reactors, heat exchangers.

Tool Steel

Alloy steel combined with elements like tungsten, chromium, or vanadium for enhanced hardness, wear resistance, and toughness, with typical grades including A2, D2, H13, and S7.

Properties:

High hardness and wear resistance.
Excellent toughness and impact strength.
Good heat resistance and dimensional stability.

Application:

Mold & Die Making: Forging dies, stamping dies, injection molds.
Cutting Tools: Drill bits, milling cutters, lathe tools.
Industrial Machinery: Wear-resistant parts, punches, shear blades.

Carbon Steel

An iron-carbon alloy containing up to 2.1% carbon, often with small amounts of manganese, silicon, or sulfur.

Low-carbon Steel
Medium-carbon Steel
High-carbon Steel

Properties:

High strength-to-weight ratio.
Good ductility and machinability.
Cost-effective and widely available.
Can be heat-treated for enhanced properties.

Application:

Automotive: Engine components, chassis parts.
Construction: Structural beams, fasteners.
Machinery: Gears, shafts, tools.

Brass

Its good mechanical properties and machinability make it suitable for intricate designs.

Properties:

Good corrosion resistance
Aesthetic appeal
Easy to machine

Applications:

Decorative:jewelry, art objects, architectural hardware
Electrical: electrical connectors, terminals, switches
Musical Instruments: trumpets, trombones, other brass instruments

Bronze

An alloy primarily composed of copper and tin, often with additions of phosphorus, aluminum, or nickel to enhance properties like strength and corrosion resistance.

Properties:

Good corrosion resistance, especially in marine environments.
High strength and hardness compared to pure copper.
Excellent thermal and electrical conductivity.
Good machinability and castability.

Applications:

Marine Engineering: Propellers, valves, and fittings.
Electrical Components: Contacts, springs, and connectors.
Art and Sculpture: Castings and decorative elements.
Industrial Machinery: Bearings, bushings, and gears.

Inconel

A family of nickel-chromium-based superalloys, often incorporating elements like molybdenum, niobium, or titanium to deliver exceptional high-temperature strength and corrosion resistance, with prominent grades such as Inconel 718, Inconel 625, and Inconel 600.

Properties:

Superior strength and structural stability at extreme temperatures (up to 1,200°C).
Excellent resistance to oxidation, creep, and corrosion in aggressive environments.
Maintain mechanical integrity across a broad temperature range.

Applications:

Aerospace: Turbine engine turbine sections, combustion chambers, and afterburners.
Energy: Gas turbine components, nuclear reactor hardware.
Chemical Processing: High-temperature, corrosive fluid handling systems and heat exchangers.

Acrylonitrile Butadiene Styrene (ABS)

Acrylonitrile Butadiene Styrene-thermoplastic polymer known for its excellent balance of strength, toughness, and rigidity.

Properties:

Highly resistant to impact and can withstand physical stress without cracking or breakin
Capable of withstanding temperatures up to 100°C (212°F) without significant degradation
Resistant to many acids, alkalis, oils and other chemicall substances
Smooth, glossy surface to be easily painted or coated
Easy to mold and can be processed through a variety of methods

Application:

Automotive: Dashboard components, wheel covers.
Electronics: Keyboard keys, printer housings, and phone cases.
Toys: LEGO bricks, educational kits

Polyoxymethylene (POM)

Also known as acetal resin, is a high-performance engineering thermoplastic with excellent mechanical properties, low friction coefficient, and good dimensional stability, with common grades including Delrin and Celcon.

Properties:

High tensile strength and rigidity, comparable to some metals.
Low friction and wear resistance, suitable for moving parts.
Good creep resistance and dimensional stability under load.
Resistance to solvents and hydrocarbons, though limited resistance to strong acids and bases.

Applications:

Automotive Industry: Gear wheels, fuel system components, and window lift mechanisms.
Consumer Electronics: Slide rails, hinges, and precision parts in appliances.
Industrial Machinery: Bearings, bushings, and conveyor belt components.
Medical Devices: Pump parts and precision instruments due to its cleanability and low particle generation.

Polycarbonate (PC)

Polycarbonate is a high-performance thermoplastic polymer. It is an amorphous engineering plastic, which is synthesized through the reaction between bisphenol A and phosgene or diphenyl carbonate.

Properties:

①Excellent optical clarity, high light transmittance

②Good dimensional stability, low coefficient of thermal expansion

③Withstand significant impacts without breaking or cracking

Application:

①Medical: Surgical instruments, dialysis machine housings.

②Aerospace: Aircraft canopy windows.

③Electronics: LED light covers, smartphone screens, electronic device enclosures.

④Automotive: Headlight lenses

Nylon (PA)

Nylon, also known as Polyamide (PA), is a type of synthetic polymer that belongs to the family of thermoplastic polymers.

Properties:

①Excellent tensile strength and good abrasion resistance

②A relatively high melting poin, maintain its mechanical and chemical properties at relatively high temperatures

③A relatively low coefficient of friction

④Good electrical insulation and dimensional stability

Application:

①Automotive: Gears, bearings, and fuel system components.

②Industrial: Conveyor belts, machine parts.

③Consumer: Zippers, sports equipment (e.g., ski bindings)

Polyether Ether Ketone (PEEK)

PEEK (Polyether Ether Ketone) is a high-performance thermoplastic polymer, valued for its exceptional heat resistance, mechanical strength, and chemical inertness.

Properties:

Outstanding thermal stability, retaining properties at temperatures up to 260°C (short-term exposure to 300°C).
High tensile strength and creep resistance, maintaining performance under sustained load.
Excellent chemical resistance to oils, solvents, and aggressive fluids.

Applications:

Aerospace: Lightweight structural components and engine parts requiring heat resistance.
Medical: Implants (e.g., spinal cages) due to biocompatibility and sterilizability.
Oil & Gas: Downhole tools resistant to high temperatures and harsh chemicals.

PMMA

Polymethyl methacrylate (PMMA), also known as Acrylic, is a transparent thermoplastic polymer valued for its clarity, weather resistance, and versatility

Properties:

Exceptional optical clarity (transmits ~92% of visible light), with shatter resistance superior to glass.
Strong weatherability, resisting UV radiation and yellowing, making it ideal for outdoor use.
Easy to machine, cut, and thermoform into complex shapes.

Applications:

Signage & Displays: Outdoor signs, retail showcases, and light diffusers due to transparency.
Construction: Skylights, safety barriers, and window panels for its impact resistance.
Automotive: Headlight lenses and interior trim, leveraging both clarity and durability.

Fecision also support mill-turn machining for specialty materials, such as Cobalt Chrome, Hastelloy, Monel, Tungsten Carbide, Ceramic Composites and Custom Alloys.

CNC Mill-Turn Surface Finishing

Our comprehensive manufacturing capabilities extend beyond CNC mill turn machining to include a range of secondary services that enhance part functionality, appearance, and performance.

Powder Coating

Applies dry powder via electrostatic spray, cured by heat to form a hard, durable finish with minimal VOCs.

Anodizing

Enhances corrosion resistance, improves surface hardness, and offers aesthetic color options.

Polishing/Buffing

Achieves smooth or mirror-like finishes by reducing surface irregularities.

Passivation

Removes free iron contaminants and enhances stainless steel’s corrosion resistance.

Electroplating

Deposits metal layers (e.g., Nickel, Chrome, Zinc) onto substrates via electrolysis, improving appearance, wear and corrosion resistance.

Sandblasting/Shot Peening

Reduces surface roughness, removes burrs, and improves adhesion for coatings.

Laser Marking

Using laser beams to engrave permanent marks (text, logos) on surfaces with high precision and minimal damage.

Heat Treatment

Controlled heating/cooling of materials to alter properties like hardness, ductility, or strength.

CNC Mill Turn Machining

Setup Requirements: Single setup for complete part production
Production Time: Reduced cycle times with combined operations
Accuracy: Higher accuracy with single datum reference
Complex Geometries: Readily achievable with multi-axis capabilities
Cost Efficiency: Lower overall production costs

Mill-Turn vs. Traditional CNC Machining

Traditional CNC Machining

Setup Requirements: Multiple setups across different machines
Production Time: Longer cycle times due to multiple operations
Accuracy: Potential for cumulative errors across setups
Complex Geometries: Challenging to achieve in one setup
Cost Efficiency: Higher labor and handling costs

Benefits of CNC Mill Turn Technology

Enhanced Efficiency

Single-Setup Manufacturing: Complete parts in one operation
Reduced Cycle Times: Up to 50% faster than traditional methods
Minimized Non-Cutting Time: Automated tool changes and operations
Lower Labor Costs: Less operator intervention required

Superior Quality

Improved Accuracy: Elimination of multiple setup errors
Better Surface Finishes: Consistent machining parameters
Enhanced Geometric Integrity: Maintained relationships between features
Reduced Scrap Rate: Fewer errors and rework

Greater Flexibility

Complex Part Capability: Machine intricate geometries
Adaptable Production: From prototypes to high volume
Diverse Material Processing: Handle various materials efficiently
Rapid Design Changes: Implement modifications quickly

Design Considerations for Mill Turn Parts

Designing parts for CNC mill turn machining requires understanding the unique capabilities and constraints of this manufacturing process.

Optimal Part Characteristics

Rotational Symmetry: Parts with cylindrical features benefit most
Combined Features: Parts requiring both turning and milling operations
Complex Geometries: Features on multiple faces or angles
Tight Tolerances: Components requiring precise dimensional relationships

Design Guidelines

Rotational Symmetry: Parts with cylindrical features benefit most
Combined Features: Parts requiring both turning and milling operations
Complex Geometries: Features on multiple faces or angles
Tight Tolerances: Components requiring precise dimensional relationships

File Format Requirements

Fecision accepts the following CAD file formats for CNC mill turn machining projects

STEP (.stp, .step)
IGES (.igs, .iges)
Parasolid (.x_t, .x_b)
SolidWorks (.sldprt)
AutoCAD (.dwg, .dxf)
3D PDF (for reference only)

When to Choose Mill Turn Machining

Ideal Applications

Complex parts requiring both turning and milling
Components with tight tolerances across multiple features
Parts where feature-to-feature relationships are critical
Production runs where consistency is essential
Components that would otherwise require multiple setups

Less Suitable For

Simple parts requiring only turning or only milling
Very large components exceeding machine capacity
Parts with extremely simple geometries
Components where cost is the only consideration
Extremely high volume production (>100,000 units)

Mill-Turn Machining Application

Industries We Serve

CNC mill turn machining excels in producing complex parts across numerous industries. The ability to complete parts in a single setup makes it ideal for components with critical tolerances and intricate geometries.

Medical

Orthopedic implants
Surgical instruments
Diagnostic equipment
Dental components
Medical device housings
Endoscopic probe

Automotive

Valve spool
Sensor housing
Motor shaft
Turbocharger impeller
Fuel injector
Engine block

Industrial Equipment

Wind turbine bearings
Valve housings
Drill bits
Pump bodies
Oil and gas equipment accessories
Shaft sleeves

Aerospace

Turbine blades
Precision fuel system parts
Landing gear components
Hydraulic manifolds
Blisks
Nozzles

Why Fecision for CNC Mill Turn Machining?

Advanced Technology

Traditional machining methods may not be able to deal with complex geometries and high-precision parts. Our multi-axis machines, ranging from 3-axis to 5-axis CNC machines, enable us to perform intricate cuts, angles, and curves.

Experienced Engineering Team

Our engineering team has decades of experience in CNC machining and design optimization. At Fecision, we specialize in Design for Manufacturability (DFM) and leverage advanced CAD/CAM software to ensure smooth integration between design and machining processes.

Versatility Across Materials

Fecision offers a broad spectrum of material options to match the needs of your specific application. Meanwhile, we provide guidance on material selection based on part performance requirements such as strength, corrosion resistance, or wear resistance, ensuring optimal results.

Quality Assurance

Our products are trusted by high-profile customers from industries across global, meeting strict and complete quality standard. Access to ISO 9001: 2015 quality certification and our manufacturing partners certified to ISO 13485: 2016, ISO 14001: 2015, and IATF 16949: 2016.

Fast Turnaround Times

We recognize the critical need for timely delivery. Most machines of our partner manufactuers run 7*24 hours with integrated process. Through streamlined workflows and optimized production processes, we ensure fast lead times while maintaining the highest standards of quality.

Commitment to Sustainability

Fecision is committed to minimizing waste and reducing our environmental impact. We prioritize sustainable practices such as material recycling, energy-efficient operations, and waste reduction in our machining processes.

Start CNC Mill Turn Machining

Once your parts are designed and optimized for CNC machining, it's time to move forward with the manufacturing process. It only takes 4 steps as followed.

Submit Technical Files

xport your design to a CNC-compatible CAD format. For CNC machining, we advise STEP format as it’s more standardized and can be used across platforms. A technical drawing is helpful, especially for threads, tolerances, or specific finishes.

DFM & Quotation

Our engineers analyze your design for manufacturability, check tolerances and materials. Please be aware that further discussions may be needed during the process. We then provide a detailed quote including lead time, costs, and other infomation you may need.

Precision Manufacturing

Upon your confirmation to the design, our team will begin CNC machining. Using advanced CNC machines, we mill, turn or grind parts per your design. Real-time monitoring ensures adherence to tolerances, with material traceability maintained throughout production.

Inspection & Delivery

Parts undergo strict QC via CMM or 3D scanning. We issue inspection reports, pack securely and ship, offering tracking info. Rush delivery options are available upon request.

Validated Performance, Guaranteed Quality

Commitment to Quality & Validation

We employ rigorous validation protocols, including in-process and final CMM inspection, steel certifications, heat treat certifications, and comprehensive mold trials (T1, T2...) to ensure your mold performs flawlessly and meets all specifications from the first shot. Trust our ISO-certified quality system.