Heavy-Duty Turning Capacity
Supports large turned components such as shafts, sleeves, rollers, and flanges, with turning, secondary operations, and inspection coordinated in one facility.
Large CNC Equipment & Workshop Overview
This gallery highlights the CNC equipment, heavy-duty turning capacity, and large-format machining resources available for large part projects in one facility.
Every large part is reviewed for manufacturability and inspected before shipment, with documentation available to match project requirements.
Large Format Gantry Milling
Suitable for large plates, frames, housings, and structural components that require stable fixturing, multi-surface machining, and consistent dimensional control.
DMU80 5-Axis Machining
Used when parts require angled features, complex surfaces, tight tolerances in specific areas, or geometry that benefits from multi-axis access.
Small and Medium-Sized CNC Machining
Supports smaller related components, secondary machining, drilling, tapping, and critical feature accuracy, helping keep related parts within the same production workflow.
Materials for Large CNC Machining
We machine common metals and engineering plastics used in large machined parts. Final feasibility depends on blank form, wall thickness, stress-relief needs, and critical tolerance requirements.
| Material Category | Grades | Notes for Large Parts |
|---|---|---|
| Aluminum Alloys | 6061-T6, 7075-T6, 5083, 2024 | Common for lightweight structures, covers, housings, and large plates; stress relief may be recommended for longer parts. |
| Stainless Steel | 304, 316L, 17-4PH, 15-5PH | Suitable for corrosion resistance, pump parts, and large stainless steel CNC machining with sealing or fit-critical surfaces. |
| Carbon & Alloy Steel | 1045, 4140, 4340, S355 | Used for large shafts, machine bases, fixtures, and structural parts that need strength and durability. |
| Titanium | Grade 2, Ti-6Al-4V | Applied where weight, corrosion resistance, or performance justify slower material removal and tighter process control. |
| Copper & Brass | C110, C360, Beryllium Copper | Used for large copper part machining, conductivity-related parts, and thermal or electrical hardware. |
| Engineering Plastics | PEEK, POM, PTFE, Nylon, UHMWPE, More | Suitable for large plastic CNC machining, insulating parts, low-friction parts, and lighter custom structures. |
| Nickel Alloys | Inconel 625, Inconel 718, Monel 400 | Used for large nickel alloy machining where heat, corrosion, or chemical resistance matters. |
| Cast Iron | HT250, QT500 | Common for machine bases, frames, and rigid structural parts that benefit from damping and dimensional stability. |
Unsure whether your material and geometry are suitable for large CNC machining?
Share the drawing, blank type, and critical features. We can review access, distortion risk, and inspection strategy before we provide a quote.
Large Format CNC Milling Specifications
| Parameter | Value | Use Note |
|---|---|---|
| Max Milling Travel (3-axis) | 3000 × 1600 × 1400 mm | Main large-envelope milling capacity for oversized plates, housings, bases, and structures. |
| Max Part Length (Milling) | ~2600 mm | Depends on fixturing, setup clearance, and the actual geometry of the part. |
| Max Turning | Ø1250 × 2000 mm | For large flanges, sleeves, shafts, bores, and other cylindrical parts. |
| Max 5-Axis Size | 800 × 600 × 900 mm | The 5-axis envelope is smaller than the large 3-axis milling envelope and is used for local complex features. |
| Multi-face Single Setup | 600 × 1200 × 500 mm | Used where fewer setups help improve feature-to-feature consistency. |
| Max Bore Diameter | 1000 mm | By boring, milling, or turning depending on the feature and machine route. |
| Max Thread | M220 | Assessed case by case for wall thickness, access, and support strategy. |
Tolerance Guidance for Large Parts
We can hold tolerances down to ±0.02 mm on suitable local features. Standard large-part tolerances are still assessed by overall size, material, geometry, and fixturing strategy.
| Part Size Range | Standard Tolerance | Precision Tolerance | Notes |
|---|---|---|---|
| 500–1000 mm | ±0.05 mm | ±0.03 mm | Depends on material, structure, and the actual datum strategy. |
| 1000–2000 mm | ±0.08 mm | ±0.05 mm | Final tolerance should be reviewed per drawing and feature location. |
| 2000–3000 mm | ±0.10 mm | ±0.05 mm | Usually requires dedicated fixturing and careful support planning. |
| Flatness (1030 × 1030 mm) | — | 0.02 mm | Typical for mounting or sealing surfaces after process review. |
| Parallelism | — | 0.03 mm / 1030 mm | Used for long reference surfaces, rails, and structural interfaces. |
| Perpendicularity | — | 0.02 mm / 1000 mm | Relevant to large multi-face assemblies and alignment-critical structures. |
Inspection and Documentation
| Item | Capability | Use Note |
|---|---|---|
| Inspection Methods | CMM, height gauge, video measuring, roundness, profile inspection | Selected according to the feature type, span, datum scheme, and customer requirement. |
| Surface Finish | Typical machined surfaces from Ra 3.2 μm to finer local features as required | Critical fit, sealing, or cosmetic areas should be specified on the drawing. |
| Quality Documents | CMM report, FAI, material certificate, surface-treatment and process reports | Available when agreed during quotation or required by the purchase order. |
| Quality Systems | ISO 9001, ISO 13485, IATF 16949, GJB9001C | Supports traceability and process control for regulated or quality-sensitive supply chains. |
Need help checking part size, weight, or machining approach?
Send your drawing and target quantity. We can review whether 3-axis, 3+2, 5-axis, or mill-turn is the best fit for your part.
Large Scale CNC Machining Capabilities
XCM CNC supports large part milling, boring, drilling, tapping, contouring, and turning for custom-machined components built to print across industrial equipment, fluid control, energy, robotics, and special machinery projects.
Heavy-Duty CNC Turning and Milling
- 3-axis large-part milling travel up to 3000 × 1600 × 1400 mm
- Turning capacity up to Ø1250 × 2000 mm for shafts, sleeves, flanges, and large bores
- Multi-face machining for housings, manifolds, fixtures, and machine structures
- Boring, bolt-circle, sealing-face, groove, and large-opening work depending on feature access and workholding strategy
Large Format CNC Milling Specifications
- Practical machined part length up to about 2600 mm depending on fixturing and setup clearance
- 5-axis machining for local complex geometry up to 800 × 600 × 900 mm
- Multi-face single-setup machining up to 600 × 1200 × 500 mm for suitable geometries
- Maximum bore diameter up to 1000 mm and maximum thread size up to M220 after drawing review
Prototype to Production
- Minimum order: 1 part for prototypes, repair parts, and custom projects
- Prototype lead times start at 3–7 days on feasible jobs after drawing review
- Typical production lead time is around 10–15 days depending on geometry, blank condition, and quantity
- Accepted files include STEP, IGES, STP, DWG, and dimensioned PDF drawings
What Is Large Part CNC Machining?
Large part CNC machining refers to the precision machining of oversized components that exceed the practical working envelope or handling range of standard setups. It is also commonly described as large scale CNC machining, heavy duty CNC machining, or large format CNC machining, depending on the part size, weight, and process route.
At XCM CNC, this service supports machined parts from 500 mm up to about 2600 mm in practical milling length, plus large cylindrical parts for turning up to Ø1250 × 2000 mm. The real challenge is not only machine travel. It is how the blank is supported, how datums are transferred, how distortion is controlled, and how the final geometry is inspected across long spans.
When this service is the right fit
- Large housings, covers, and enclosures with multi-side machining needs
- Base plates, machine frames, and structural parts with long datums
- Large flanges, rings, and sleeves with bore, sealing, or bolt-circle requirements
- Long shafts, rollers, and rotational parts that need turning plus secondary machining
- Prototype, repair, or low-to-mid volume parts where stable engineering review matters more than commodity routing
Where Large Part Machining Fits Best
Large CNC Machined Parts for Industrial Equipment
Large CNC machining is commonly used for equipment frames, mounting bases, support structures, housings, and custom machine components where flatness, hole location, and assembly fit matter across a long span.
Large Pump & Valve CNC Machining
Large pump parts, manifolds, flanges, and valve bodies often combine sealing faces, large bores, bolt circles, and intersecting passages. These parts benefit from a machining approach that balances rigidity, burr control, and inspection access.
Heavy Duty CNC Machining for Energy, Oil, and Gas
Energy-sector parts often require larger diameters, corrosion-resistant materials, traceability, and process discipline. Material certification, inspection reporting, and sealing-surface control are usually key purchasing concerns in these projects.
Large Scale CNC Machining for Automation & Robotics
Automation structures, robot bases, actuator frames, and support brackets often need low-volume custom machining with reliable hole patterns and mounting geometry. Large scale CNC machining helps keep these assemblies consistent from prototype through repeat builds.
Large Format CNC Machining for Transport Equipment
Fixtures, tooling plates, heavy brackets, covers, and structural machine parts for transport equipment and production lines frequently fall into the large part category. In these projects, buyers usually care most about repeatability, documentation, and schedule stability.
Large CNC Machining FAQ
What is your maximum CNC machining size?
Our current machining envelope includes 3-axis milling travel up to 3000 × 1600 × 1400 mm, practical machined part length up to about 2600 mm depending on fixturing, and turning up to Ø1250 × 2000 mm.
What materials can you machine for large parts?
We machine aluminum, stainless steel, carbon steel, alloy steel, titanium, copper, brass, engineering plastics, nickel alloys, and cast iron. Final feasibility depends on blank form, geometry, and quality requirements.
What tolerances can you hold on large CNC parts?
For suitable local precision features, we can hold tolerances down to ±0.02 mm. Standard large-part tolerances are still evaluated by part size, material, structure, and fixture strategy, so the final target should be confirmed against the drawing.
Can you handle both prototypes and production runs for large parts?
Yes. Minimum order is 1 part. Prototype lead times start at 3–7 days on feasible jobs after drawing review, and production timing depends on part complexity, blank condition, and quantity.
Do you offer large CNC milling and turning in one facility?
Yes. We offer large milling, heavy-duty turning, multi-face machining, and follow-up feature control in one facility, which helps reduce handoff risk and keeps inspection responsibility in one place.
Can you machine large parts from forgings or castings?
Yes, if the drawing, blank allowance, and datum strategy are suitable. For castings and forgings, we recommend sharing blank information early because it affects machining approach, distortion risk, and inspection planning.
What inspection and documentation do you provide for large CNC parts?
We can provide dimensional inspection, CMM reports, first article reports, material certificates, and related process documentation when required by the order. The right inspection level should be agreed during quotation.
Request a Quote for Your Large Part
Send your 2D/3D drawing, material grade, tolerance targets, quantity, and application notes. We will review part size, machining approach, and inspection requirements before we provide a quote.
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