Our CNC Milling Capabilities
EKINSUN operates both 3-axis and 5-axis CNC machining centres, allowing us to handle everything from simple profiled plates to complex multi-sided parts that require compound angles, undercuts, and contoured surfaces — all in a single setup where possible to eliminate re-fixturing errors and guarantee dimensional consistency.
We work from CAD files, technical drawings, hand sketches and physical samples. If you don't have a drawing, our engineers build one for you before machining starts — you review and approve it first.
3-Axis vs 5-Axis Milling
3-Axis Milling
- Best for prismatic, flat and contoured parts
- Brackets, mounting plates, flanges
- Enclosures and housings with straight walls
- Tooling plates and fixtures
- Lower cost for standard geometries
5-Axis Milling
- Complex geometries, undercuts, compound angles
- Impellers, turbine blades, propellers
- Organic and sculpted surfaces
- Single-setup machining reduces errors
- Medical device components, aerospace parts
Technical Specifications
| Parameter | Capability |
|---|---|
| Standard Tolerance | ±0.01mm |
| Precision Tolerance | ±0.005mm (critical features) |
| 3-Axis Workspace | 1,200 × 600 × 500mm |
| 5-Axis Workspace | 600 × 500 × 400mm |
| Surface Finish | Ra 0.8μm (standard), Ra 0.4μm (fine) |
| Minimum Feature Size | Ø 0.5mm bore, 0.3mm wall |
| Machine Type | 3-Axis VMC, 5-Axis Machining Centre |
| Minimum Order | 1 piece |
| Standard Lead Time | 7–15 business days |
| Express Lead Time | 3–7 business days |
| Quality Standard | ISO 9001:2015 |
Materials We Mill
- Aluminum: 6061-T6, 7075-T6, 2024, 5052, MIC-6 tooling plate
- Stainless Steel: 304, 316L, 303, 17-4PH, 420
- Carbon & Alloy Steel: 1018, 1045, 4140, 4340, D2 tool steel
- Titanium: Grade 5 (Ti-6Al-4V), Grade 2
- Brass: C36000, C26000
- Copper: C11000, C10100
- Engineering Plastics: Delrin (POM), PEEK, Nylon, Polycarbonate, PTFE
- Nickel Alloys: Inconel 625, Inconel 718 (on request)
Typical CNC Milled Parts
- Housings and enclosures
- Mounting brackets and structural plates
- Flanges and connection blocks
- Manifold blocks and valve bodies
- Impellers and pump components
- Jigs, fixtures, and tooling plates
- Heat sinks and cooling plates
- Robot arms and automation components
Milled Parts We Quote Every Week — by Part, Material & Application
These are the specific part families buyers come to us for most often. Each one is linked to product pages with specs and how to order:
Custom Mounting Brackets
6061-T6 Al · 7075-T6 · 1045 Steel · 304 SS
Any size · custom bolt pattern · counterbores · gussets · anodized or powder-coated
Used in: servo motor mounts · machine frames · conveyor side plates · sensor brackets · equipment enclosures
Standard L-bracket wrong bolt pattern or too light for the load? We mill to your exact drawing — including non-standard hole patterns, integral gussets and weight-reducing pockets.
Custom brackets →Aluminum Heat Sinks
6061-T6 Al · MIC-6 tooling plate
Fin pitch 1.5–5mm · base 3–20mm · any footprint · clear or black anodize
Used in: power electronics cooling · LED drivers · motor controllers · inverters · RF amplifiers
Standard heat sink wrong footprint, wrong mounting pattern or insufficient thermal mass? We mill custom fin geometry in 6061 to match your PCB layout exactly.
Custom heat sinks →Precision Housings & Enclosures
6061 Al · 304 SS · 316L SS · 7075 Al
Pocketed · tapped inserts · custom cutouts · IP67 sealing surfaces · surface Ra 0.8μm
Used in: electronics enclosures · sensor housings · control panel bodies · food-processing equipment · outdoor IP-rated units
Off-the-shelf enclosure wrong internal geometry or too heavy? We mill a bespoke housing with exactly the pockets, bosses and cutouts your assembly needs — one-off or small batch.
Custom housings →Manifold Blocks & Valve Bodies
6061 Al · 7075 Al · 4140 Steel · 316L SS
Multi-port · internal cross-drilled channels · O-ring face seal grooves · SAE/ISO port threads
Used in: pneumatic distribution · hydraulic power units · test rigs · fluid control systems
Standard manifold wrong port spacing or layout? We mill custom blocks from your schematic — any port standard (SAE, BSP, NPT, metric), any internal channel routing.
Custom manifolds →Motor & Gearbox Flanges
1045 Steel · 4140 · 304 SS · 6061 Al
IEC/NEMA bolt pattern · custom register diameter · keyway bore · weld-neck or bolt-on
Used in: motor coupling adapters · gearbox input flanges · drive train interfaces · non-standard frame sizes
Coupling two motors or gearboxes with incompatible frame sizes? We mill adapter flanges to any bolt pattern and register diameter — including mixing IEC and NEMA standards.
Custom flanges →Impellers & Turbine Components
6061 Al · 7075 Al · Ti-6Al-4V · 17-4PH SS
5-axis machining · profile tolerance ±0.05mm · blade undercuts · dynamic balance option
Used in: centrifugal pumps · turbocharger compressor wheels · blowers · vacuum pumps · custom compressors
Impeller supplier says it's too complex for 3-axis? Our 5-axis centres machine full blade profiles in a single setup — from your CAD file or reverse-engineered from the worn original.
5-axis milling →Tooling Plates & Fixtures
MIC-6 Al · 6061-T6 · 1045 Steel
Flatness ±0.05mm · tapped grid pattern · precision bore locations · CMM verified
Used in: CMM fixturing · welding jigs · assembly fixtures · optical bench plates · inspection aids
Need a custom fixture plate with non-standard hole pattern or datum features? We mill to your drawing with CMM verification of all critical hole locations.
Custom parts →Cooling Plates & Cold Plates
6061-T6 Al · copper C11000
Internal channels via gun drilling + milling · fittings tapped · pressure tested · any footprint
Used in: battery thermal management · power module cooling · laser diode cooling · EV drive electronics
Standard liquid cold plate wrong footprint or channel layout? We design and mill custom cooling plates with internal channel routing matched to your heat source map.
Cooling plates →Who Gets CNC Milling Quotes From Us?
The buyers who find EKINSUN most useful for milled parts — and the specific problems we solve:
Machine Designers & Mechanical Engineers
"I need a custom servo motor bracket for a non-standard frame size — the catalogue part doesn't exist and I only need 3 pieces."
We mill from your DXF, STEP, hand sketch or even a dimensioned photo. Three pieces, no setup surcharge, no minimum order. Quote in 24 hours. Anodize, powder coat or leave as-milled — your choice.
Electronics & Product Development Engineers
"I'm prototyping a new electronics enclosure. I need the housing in 6061 aluminum with exact pocket geometry — one prototype before we decide on tooling."
One prototype, machined to your STEP file or hand sketch. We suggest wall thickness, draft and corner radius improvements before cutting. Result: a functional prototype that looks production-quality and informs your tooling decision.
Industrial Maintenance Buyers
"A milled aluminum housing on our packaging machine cracked. The OEM charges $3,000 and wants 14 weeks. Can you reproduce it for less?"
Send the cracked housing — we 3D scan it or measure it directly, rebuild the CAD, confirm with you, then mill a replacement. Often faster and cheaper than OEM, especially for older or discontinued machines. Replacement machine parts →
Importers & OEM Sourcing Managers
"I need a China manufacturer for 50–500 piece batches of milled aluminum brackets with tight tolerances and consistent quality across reorders."
ISO 9001:2015 certified. CAD locked after first article approval — every batch matches. Material mill certs on every order. Price breaks at 10, 50 and 100 pieces shown upfront. Worldwide shipping with full commercial documentation for import.
Search Terms — If You Found Us This Way, We Can Quote It
Common buyer searches that lead to EKINSUN for CNC milled parts:
Related Services
CNC milling is often combined with CNC turning on our turn-mill centres for complex parts that need both rotational and prismatic features in a single setup. We also offer 3D scanning to reverse-engineer parts that need to be reproduced without a drawing, and vacuum casting for plastic parts that don't justify the cost of a steel mould.
Milling Work From Our Workshop
A selection of recent CNC milling jobs — housings, plates, brackets and 5-axis complex parts across materials:
Frequently Asked Questions
3-axis milling moves along X, Y and Z — ideal for flat parts, brackets and straight-walled housings. 5-axis adds two rotational axes, letting the tool approach from any angle in a single setup. This is essential for compound angles, undercuts, impellers and complex organic shapes. We quote both options where applicable and recommend the one that gives you the best price-to-quality ratio.
Yes. Send us your hand sketch, a photo of an existing part, or key dimensions on paper. Our engineers build a CAD model, send it for your approval, and only start machining once you confirm the geometry is correct. No CAD software required on your end.
Standard tolerance is ±0.01mm. For critical dimensions such as precision bores, locating surfaces and tight fits, we achieve ±0.005mm. Mark all critical dimensions on your drawing; we flag anything that requires special process control before accepting the order.
1 piece. We machine single prototypes regularly — there are no minimum charges or setup fees. Volume pricing applies automatically as quantities increase.
Yes. Material mill certificates are standard with every metal order. Dimensional inspection reports are available on request. First Article Inspection (FAI) reports are prepared automatically for aerospace and medical orders.
Yes. A clear hand sketch with key dimensions is enough to start. Our engineers convert it to a dimensioned CAD drawing, send it to you for approval, and only begin milling once you confirm every dimension is correct. No CAD software needed on your end. You can also email photos of an existing part or a rough description with the critical dimensions — we'll ask follow-up questions before quoting.
Yes. Send the broken or worn part. We measure it with CMM or 3D scan it, rebuild the CAD model (free), confirm it with you, then mill the replacement. This covers housings, brackets, manifold blocks, plates and most prismatic parts. See Replacement Machine Parts and Reverse Engineering for how the process works.
Ideally: a 2D drawing or 3D STEP/IGES file, material, quantity and delivery country. But we also work from hand sketches, photos with key dimensions, or verbal descriptions for simple parts. The more detail you provide, the faster and more accurate the quote — but we'll always ask before assuming. Email [email protected] or use the form on this page.
Yes. After first-article approval your CAD file is stored and reorders reference the same file, material spec and inspection criteria — so every batch matches the first. Most repeat customers see unit price reductions on later runs as fixture time shrinks. We can hold safety stock for high-volume programmes. Contact us to discuss a supply agreement.
Get a Milling Quote
Send your drawing — any format. Quote in 24 hours.
// Qty & price
1 pc
Sample price
Confirm fit before a run
3–10
Unit price drops
Setup cost shared
10+
Best price
All tiers quoted upfront
- →No distributor — you pay the maker directly
- →CAD saved after first order — reorder anytime at lower unit price
Or email: [email protected]