Custom CNC Milling
Services for Precision
Machined Parts
We provide precision CNC milling services for custom aluminum, stainless steel, titanium, brass and plastic parts, from prototypes to mass production.
ISO 9001 Certified
3/4/5-Axis CNC Milling
Prototype & Low-Volume Production
Tight Tolerance Machined Parts
One Supplier for Full-Spectrum CNC Machining Solutions
Looking for diversified precision machining support?
We provide custom CNC Milling, CNC Turning, Swiss-type machining, Mill-Turn and 5-axis machining services for new energy, robotic automation, pump & fluid control, packaging machinery and electronic equipment components.
Send your engineering drawings to our technical team. We analyze part structure, tolerance requirements, raw material options and order volume, then recommend the most cost-effective manufacturing process for your precision OEM components.
3, 4 & 5-Axis Precision Machining up to ±0.005 mm
Precision CNC Milling Services
We produce high-precision machined components for new energy storage, robotic automation, pump & fluid control, packaging machinery and electronic test equipment. Supported by complete in-house CNC equipment and professional quality inspection laboratory, we deliver stable precision parts for prototype and mass OEM orders.
- In-house 3/4/5-axis machining centers
- Strict tolerance ±0.005 mm on critical dimensions
- Professional CMM precision inspection
- Rich experience in industrial equipment component manufacturing
No MOQ | Complete Inspection Reports Available | NDA Protection for Custom Drawings
40+
In-house CNC Machining Centers
±0.005 mm
Tolerance for Critical Features
50+
Countries We Export To
5–10 Days
Prototype Production Lead Time
Precision CNC Milling for Industrial OEM Components
CNC milling removes excess material from solid blanks with rotating cutters on multi-axis machines. It is the ideal solution to manufacture complex prismatic and contoured metal & plastic components for automation, new energy and fluid control equipment.
Maintaining ultra-tight tolerance ±0.005 mm on thin-wall aluminum housings, valve blocks and automation brackets requires mature fixture design, optimized tool paths and stress relief technology.
We adopt Mastercam & Siemens NX programming with full simulation before formal machining, to ensure first articles meet your drawing requirements. Our engineers provide professional DFM suggestions free of charge. If your design contains unnecessary strict tolerances or difficult-to-machine structures, we will offer optimization proposals at the quotation stage.
| Milling Capability Specification | Parameters |
| Axis Configurations | 3-axis · 3+2 axis · Simultaneous 5-axis |
| Standard Tolerance | ±0.025–0.05 mm |
| Critical Feature Tolerance | ±0.005 mm |
| Micro Feature Tolerance | ±0.001 mm |
| Standard Surface Roughness | Ra 0.4–1.6 μm |
| Max Machining Size | 600 × 600 × 500 mm |
| Minimum Order Quantity | 1 piece |
| Quotation Cycle | Within 12 working hours |
The Equipment Your Part Actually Runs On
A reliable custom machining supplier relies on stable equipment. We adopt well-known Japanese & Korean machining platforms selected for consistent repeatability, focusing on precision manufacturing for new energy, robotic automation, pump & fluid control and packaging machinery OEM components.
| Cell / platform | Machines | Typical work envelope | What it makes |
|---|---|---|---|
| Simultaneous 5-axis cell | 9 units multi-task 5-axis machining centers | ≈ 500–600 mm travel | Undercuts, complex 3D contours, equipment housings, fluid valve blocks, automation structural components |
| High-speed precision drill-tap | 5 × FANUC Robodrill α-D21MiA / D21MiB Plus | Compact, 2 equipped with 4th-axis rotary table | Micro features below 0.5mm, mixed-batch aluminum & stainless steel parts for electronics and automation equipment |
| Turn-mill centres | Doosan turn-mill machines, Swiss sliding head lathes | Bar stock & chuck processing | Shafts, fluid connectors, composite mill-turn components for pumps and automation systems |
| 3-axis VMC line | Vertical machining centres | Worktable up to ≈ 800 mm | Mounting plates, support brackets, hydraulic manifolds, equipment enclosures |
| Metrology lab | Mitutoyo CMM, optical comparators, height gauges & surface roughness testers | 20 ± 1 ℃ temperature-controlled room | First article inspection & in-process dimensional testing for all custom machined parts |
CNC Milling Materials We Work With
We provide CNC milling service for a wide range of metals and engineering plastics, including aluminum, stainless steel, titanium alloy, brass and high-performance plastics. We support OEM precision components for new energy systems, robotic automation, pump & fluid control equipment, packaging machinery and electronic instruments. Our engineers help customers select suitable materials according to component strength, weight, corrosion resistance and actual working conditions.
Aluminum
6061, 6063, 7075, 2024 and more
Lightweight and anti-corrosion. Widely applied in automation brackets, equipment housings, pump bases, new energy structural plates and precision mechanical components.
Stainless Steel
303, 304, 316, 316L, 17-4PH and more
High durability and corrosion resistance. Ideal for fluid valve parts, pump components, automation equipment and industrial machinery assemblies.
Titanium
Ti-6Al-4V, Grade 2, Grade 5 and more
High strength-to-weight ratio and outstanding corrosion resistance. Suitable for high-performance automation and fluid control precision components.
Brass
C360, C260, H59 and more
Excellent machinability and stable performance. Used for fluid connectors, valve fittings, electronic terminals and automation precision parts.
Plastic
ABS, POM, PC, PMMA, PEEK and more
Lightweight, insulating engineering plastics. Suitable for automation fixtures, equipment covers, prototypes and functional plastic components.
Copper
C11000, C10200 and more
Excellent electrical & thermal conductivity. Widely used for new energy conductive components, heat sink parts and electronic equipment assemblies.
Magnesium Alloy
AZ31B, AZ91D and more
Ultra-light weight with sufficient rigidity. Ideal for lightweight automation equipment housings and new energy structural parts.
Tool Steel
P20, S136, 4140 and more
High hardness and wear resistance. Suitable for custom fixtures, jigs, mould bases and automation tooling components.
Five Factors That Determine CNC Milling Part Cost
Minor adjustments to engineering drawings can reduce manufacturing costs by 20–40% without sacrificing part performance. These practical DFM guidelines are based on our rich experience manufacturing precision CNC machined components for new energy equipment, robotic automation systems, pump & fluid control machinery, packaging machinery and electronic instruments.
📐Internal corner radii
A milling cutter is circular, which means internal corners naturally come with radii. Demanding sharp internal corners requires EDM processing or low-efficiency finishing with tiny cutters. We recommend reserving a radius at least 1/3 of pocket depth. Optimized corner design speeds up production and lowers costs for automation brackets, pump valve bodies and new energy structural parts.
🟦Wall thickness
Metal walls thinner than ~0.8 mm (1.5 mm for plastics) easily vibrate and deform during machining. We can produce ultra-thin walls using dedicated fixtures and stress relief treatment, but this will increase costs. Kindly inform us whether thin walls are functional requirements for fluid control components, automation equipment housings or only reserved from original 3D models.
⬜Pocket depth-to-width ratio
Deep and narrow pockets require slender cutters that are prone to deflection and taper. Keep pocket depth within 4 times the tool diameter for stable dimensional tolerance. Deeper pockets usually require 5-axis machining or negotiated tolerance trade-offs, common for new energy cooling bases and valve fluid channel parts.
🚀Tolerance only where it counts
Universal ±0.01mm tolerance for all dimensions will significantly raise machining expenses. Please mark only mating, sealing and assembly surfaces as critical tolerance zones. This optimization is widely applied in robotic automation assemblies, pump fluid fittings and electronic precision components.
⭕Undercuts & tool access
Features unreachable by straight standard cutters require 5-axis machining, T-slot tools or structural redesign. If undercuts are only reserved for assembly clearance on packaging machinery parts and automation fixtures, simpler alternative structures can effectively cut your production budget.
💡Threads & inserts
For soft metals and mass production orders, threaded inserts offer better durability than directly tapped threads. We adopt thread milling for hard alloy components used in new energy equipment and fluid control valves. Each batch of threaded parts will be strictly inspected to guarantee assembly performance.
Precision CNC Milling with Strict Quality Control
Quality control runs through every custom CNC milling order. Equipped with in-house Hexagon CMM equipment, raw material verification, in-process testing and final dimensional inspection, we guarantee all precision machined components satisfy drawing tolerances and strict application standards for new energy, robotic automation, pump & fluid control, packaging machinery and electronic equipment.
- ✓ 2 sets of Hexagon CMM machines for high-precision dimensional inspection
- ✓ Constant-temperature inspection lab for tight-tolerance CNC milled components
- ✓ In-process inspection during CNC milling production
- ✓ Custom final inspection test reports provided on request
- ✓ Strict raw material incoming inspection before machining
- ✓ ISO 9001 certified quality management system
Prototype and Low-Volume CNC Milling Services
We support product development from single prototype samples to low-volume CNC milling production. Whether you require functional test samples, design verification components, or small-batch machined parts for new energy equipment, robotic automation, pump & fluid control, packaging machinery and electronic instruments. Our engineering team delivers finished components from your drawings, with stable quality and flexible order quantity.
1-Piece Prototype
Fast DFM Review
Small-Batch Production
Fast Lead Time 3–7 Days
CNC Milled Parts for Demanding Industries
We manufacture custom CNC milled parts for industries requiring precision, stability and strict quality control. Our CNC milling service provides custom machined components for new energy systems, robotic automation, pump & fluid control equipment, packaging machinery and electronic test instruments according to customer drawings.
Surface Finishing for CNC Milled Parts
Rapidsupp custom surface finishing options for custom CNC milled parts are based on material type, drawing requirements, appearance needs, and application environments. We help defined machined parts with suitable protection, appearance, and functional surface performance.
Anodizing
Hard Anodizing
Nickel Plating
Zinc Plating
Black Oxide
Passivation
Bead Blasting
Polishing
From Drawing To Milled Part In Four Steps
Send your drawing
Upload 2D or 3D files (STEP, IGES, PDF, DWG) through our encrypted portal. Mutual NDA signed within one business hour.
DFM & quote
We review tolerances, material and finish, flag any cost-driving features, and return an itemised quote in 12 business hours.
Milling & inspection
Vericut-simulated tool paths cut the part; the first article is measured on the CMM before the lot runs.
Documented delivery
Parts ship with FAI, material certs and CMM report - air freight to the target regions in 3–5 business days.
CNC Milling Services FAQ
Here are some common questions about our custom CNC milling services, materials, tolerances, prototypes, surface finishing, and quality control.