CNC Milling

Precision CNC Milling Services

At Parts Tool & Die (PTD), our precision CNC milling capabilities deliver mission-critical components to aerospace, defense, oil & gas, industrial, and commercial OEMs. We excel in producing complex geometries, tight-tolerance features, and multi-face machining in a single setup, reducing lead times and improving accuracy.

Whether you need 5-axis milling services for intricate aerospace housings or vertical milling services for large prismatic parts, our team of skilled machinists, backed by advanced Okuma and Doosan equipment, brings the speed, precision, and engineering collaboration required for high-stakes applications. We don’t just make parts; we become an extension of your engineering team, proactively solving manufacturing challenges and delivering results you can trust.

Expertise for Your High-Tolerance Milled Components:
Our CNC Milling at a Glance

Precision CNC Milling Equipment List

Our machining centers combine high-speed spindles, multi-axis capability, and rigid construction to handle a wide range of part sizes, materials, and tolerances. This flexibility allows us to serve customers with prototype runs, volume production, and ongoing repeat orders.

With 3, 4 and 5-axis CNC milling equipment, our team can review your design and develop an optimized CNC milling processes to maximize efficiency and accuracy. This allows us to produce parts ranging from small, intricate brackets to large CNC milled aerospace structures, all while maintaining consistent quality and repeatability:

Millac 1052

  • Okuma OPS-P300MA with 0.1 Micron Controll
  • Vertical Machining Center with Tsudakoma RWB-500 Rotary Table
  • Spindle Nose to Table 43.31”
  • Travels X: 80.71” Y: 41.73” Z:31.50”
  • Max Table Load Capacity 11,000 lbs
  • Table Size 86.61” x 41.34”
  • ABSO Scales on X, Y, and Z axis
  • 1000 psi High Pressure Through Spindle Coolant
  • 6,000 RPM CAT50 Big-Plus Spindle
  • Renishaw RMP60 Spindle Probe

OKUMA MU-4000V (2)

  • Okuma OPS-P300MA with 0.1 Micron Control
  • 5-Axis CNC Milling Vertical Machining Center
  • Table Size Ø15.75
  • Spindle Nose to Table 22.83”
  • Max Table Load Capacity 660 lbs
  • Linear Travels X: 29.13” Y: 18.11” Z: 18.11”
  • Rotary Travels C-Axis 360° Continuous, B-Axis +90° to -120°
  • ABSO Scales on X, Y, and Z Axis, B and C Axis Rotary Scales
  • 1000 psi High Pressure Through Spindle Coolant
  • 15,000 RPM CAT40 Big-Plus Spindle
  • Renishaw RMP400 Spindle Probe

OKUMA GENOS M560-V (3)

  • Okuma OPS-P300MA with 0.1 Micron Control
  • 4-Axis CNC Milling Vertical Machining Center with Tsudakoma RWA-320 Rotary Table
  • Table Size 51.18” x 22.05”
  • Max Table Load Capacity: 1980 lbs
  • Travels X: 41.34” Y: 22.05” Z: 18.11”
  • Spindle Nose to Table 31.89”
  • 15,000 RPM CAT40 Big-Plus Spindle
  • Renishaw OMP400 Spindle Probe
  • 1000 psi High Pressure Through Spindle Coolant

OKUMA GENOS M660-V (2)

  • Okuma OPS-P300MA with 0.1 Micron Control
  • 4-Axis CNC Milling Vertical Machining Center with Tsudakoma RWB-320 Rotary Table
  • Table Size 60.23” x 25.98”
  • Max Table Load Capacity 3300 lbs
  • Travels X: 59.05” Y: 25.98” Z: 25.98”
  • Spindle Nose to Table 31.89”
  • 15,000 RPM CAT40 Big-Plus Spindle
  • Renishaw OMP400 Spindle Probe
  • 1000 psi High Pressure Through Spindle Coolant

DOOSAN DNM500

  • FANUC i-Series Control
  • 4-axis CNC milling capability
  • Table Size 47.2” x 21.3”
  • Max Table Load Capacity 2000 lbs
  • Travels X: 40.2” Y: 21.3” Z: 20.1”
  • Spindle Nose to Table 26.0”
  • Through Spindle Coolant
  • 8,000 RPM BT40 Spindle

5-Axis CNC Milling Services for Complex Components

Our 5-axis CNC milling services enable machining of multiple surfaces in a single setup, reducing fixture changes and improving geometric accuracy. This capability is ideal for aerospace, defense, and high-performance industrial components where tight tolerances and exact surface finishes are critical. Benefits include:

Vertical Milling Services for Large and Prismatic Parts

Our vertical milling services are designed to handle large plates, blocks, and prismatic components up to several feet in length. With high-torque spindles and robust workholding, we can maintain tolerances across large surface areas, making us a trusted partner for OEMs that require both precision and scale. Applications include:

Learn more about our complete capabilities and how our extensive machining expertise including precision CNC milling, CNC turning, manufacturing engineering, and more can optimize your project.

Material and Finishing Selection with Expert CNC Milling Manufacturer Support

Our knowledgeable team can help you select the right material for your project. As one of the industry’s leading CNC milling manufacturers, Parts Tool & Die brings decades of experience to every project and can offer unique insights on material selection and finishing for complex components and tight tolerance CNC milling and machining processes. While we provide custom CNC milling from a wide variety of metals and alloys depending on the application requirements, some of the common materials we utilize include:

Engineer working at a dual-monitor workstation with model displayed on one screen and technical drawings on the other.

How to Choose a Supplier for Precision CNC Milling Services

Selecting a precision CNC milling provider can be challenging given the variety of suppliers available. However, not all milling manufacturers deliver the same quality, reliability and performance. When choosing your partner, look for the following:

Certified Quality

In-place, proven process certified by third-party organizations, such as ISO 9001:2015, AS9100:2016 for aerospace, and ITAR compliance for DoD applications.

Advanced Equipment

Including multi-axis CNC milling technology with rapid production capabilities, as well as automated part handling, coordinate measurement machinery (CCM) and optical measurement equipment.

Part Traceability

The ability to track part details including the raw material, subassemblies, and equipment used to ensure accountability and compliance.

Expertise

Look for partners with years of experience producing parts for relevant applications. CNC machining services for oil & gas, aerospace, defense, transportation and automation applications often require multi-axis machining services to produce complex parts with tight tolerance requirements.

Engineering Support

In-house engineers can provide valuable insight into design for manufacturing (DFM) considerations, material selection and cost optimizations.

PTD proudly provides all of the above capabilities, and is ready to partner with you from prototype to volume to deliver the CNC milled components you need. Contact us today about your unique project requirements.

Your Partner in Precision CNC Milling

When you choose PTD for precision CNC milling, you get more than a manufacturing supplier; you gain a partner invested in your success. Our AS9100 and ITAR compliance ensure quality and security, while our commitment to communication means you always know the status of your order.

We thrive on solving manufacturing challenges, whether it’s a one-off prototype or a mid-volume production run. With decades of experience, cutting-edge equipment, and a problem-solving culture, Parts. Tool & Die delivers the precision, reliability, and speed your projects demand.

Let’s talk about your next project. Contact us today or submit your drawings for a fast, informed response from our team.

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Precision CNC Milling FAQs

Precision CNC milling is a subtractive manufacturing process that uses computer-controlled rotating cutting tools to remove material from a workpiece and create components to specified dimensions and geometries. It can produce features such as slots, pockets, holes, flat surfaces, and complex contours. Precision CNC milling is well suited for custom parts that require dimensional accuracy, repeatability, and consistent quality.

The difference between 3-axis, 4-axis, and 5-axis CNC milling is the number of axes along which the machine can position or move the cutting tool and workpiece. Three-axis milling moves along the X, Y, and Z axes, while 4-axis milling adds a rotary axis to access additional features. Five-axis milling adds two rotary axes, allowing more complex surfaces and multiple sides of a part to be machined with fewer setups. PTD offers 3-, 4-, and 5-axis CNC milling capabilities for components with a range of geometries and machining requirements.

Yes. PTD provides CNC milling for OEMs across aerospace, defense, oil and gas, industrial, and commercial markets. Located in New England’s aerospace manufacturing region, we are supplier to many OEMs that manufacture aircraft, aircraft engines, and aircraft systems. Our team manufactures custom precision components to customer specifications, supporting complex geometries, tight tolerances, and demanding production requirements. With in-house engineering and design for manufacturability (DFM) support, PTD works collaboratively with customers to develop efficient manufacturing processes for their parts.

PTD manufactures a wide range of custom CNC-milled components, from small, intricate parts to large and complex structures. Applications may include aerospace structural components, industrial equipment housings, defense system frames and panels, and oil and gas drilling or exploration parts. Our multi-axis milling capabilities support complex features and multi-face machining, with manufacturing solutions tailored to each component’s design and application requirements.

Yes. PTD specializes in complex components and strict tolerance requirements, using advanced CNC milling equipment and manufacturing engineering expertise to address demanding part designs. Our team evaluates geometry, materials, machining strategy, and inspection requirements to develop a process suited to the component. Achievable tolerances depend on the part’s design, material, dimensions, and specified requirements.

Yes. PTD supports prototype development, small production runs, and mid-to-large volume manufacturing. Our engineering and machining teams work with customers to evaluate designs, plan manufacturing processes, and support the transition from prototype parts to ongoing production. The appropriate approach depends on part complexity, quantity, quality requirements, and delivery schedules.

PTD’s CNC milling capabilities accommodate parts ranging from less than 0.1 inch to as large as 80 inches long by 41 inches deep by 31 inches tall. Our equipment includes multi-axis machining centers for complex components and large-format parts. Actual machining feasibility depends on the component’s geometry, material, workholding requirements, and other project specifications.

PTD machines a variety of metals, alloys, and other materials for custom CNC-milled components. Common materials include aluminum, stainless steel, titanium, Inconel, magnesium, nickel, brass, forgings, castings, plastics, and composites. Material selection depends on the component’s strength, operating environment, corrosion resistance, dimensional requirements, and other application-specific considerations. PTD’s team can help evaluate material and manufacturing options during project planning.

To request a CNC milling quote, provide as much of the following information as possible:
– Part drawings or CAD models, including dimensions and tolerances.
– Material specifications and any required material certifications.
– Required quantities, including prototype and anticipated production volumes.
– Surface finish, secondary machining, and finishing requirements.
– Quality, inspection, documentation, and traceability requirements.
– Target delivery dates and relevant production schedules.

Providing complete project information helps PTD evaluate manufacturability, machining requirements, pricing, and expected lead times.

PTD maintains an AS9100:2016- and ISO 9001:2015-certified quality management system supporting the manufacture of precision components for aerospace, defense, and other demanding industries. PTD is also ITAR compliant for applicable defense-related requirements. Its quality assurance capabilities include coordinate measuring machine (CMM) inspection, calibrated measurement equipment, and customer-tailored inspection processes to verify components against applicable specifications.

Closeup CNC milling machine during operation. Produced cutting metal parts, banner background of industry heavy factory.

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