OEM CNC Machining Parts per Drawing in China - CNC Machining Service
We are a China-based CNC machining factory focused on custom CNC machining and OEM machined parts manufactured strictly according to customer drawings, samples and technical specifications. As a reliable China CNC machining parts manufacturer, we produce non-standard, made-to-print CNC machined parts in China for engineers, procurement teams, equipment builders and trading companies around the world. From a single CNC machined prototype to repeat high-volume production batches, every order is treated as a custom project: dimensions, tolerances, threads, material grade, heat treatment and surface finish follow your drawing exactly.
Our daily work covers CNC milling, CNC turning, 5-axis machining, drilling, tapping, precision grinding and turn-mill combined machining of carbon steel, alloy steel, stainless steel, aluminum, brass, bronze, copper, titanium and engineering plastics. Customers looking for OEM CNC machining parts in China, custom machined components, precision turned parts, CNC milled parts or a long-term China CNC machining supplier work with us because we read drawings carefully, communicate clearly in English and deliver parts that assemble and function as designed.
Parts Made per Drawing
Manufactured from PDF, DWG, DXF drawings and STEP, IGES, X_T 3D models - never from generic catalog stock.
High Precision
Standard ±0.01 mm tolerance, critical features down to ±0.005 mm, with Ra 0.8 μm surface finishes.
Flexible Quantity
From a single CNC machined prototype or spare part to repeat high-volume mass production batches.
Strict Inspection
CMM 3D inspection and 2D profile projector measuring at 2.5 micrometer accuracy before shipment.
Custom CNC Machined Parts Made per Drawing
A selection of OEM machined parts produced from customer drawings in our China workshop - precision shafts, gears, hydraulic components, reducer parts and color-finished aluminum components.
One-Stop Custom CNC Machining Service in China
Complete in-house process coverage for OEM CNC machining parts, from raw material cutting to heat treatment coordination, finishing and final dimensional inspection.
CNC Milling
3-axis, 4-axis and multi-face CNC milling of plates, blocks, brackets, housings, manifolds, fixtures and complex prismatic parts with pockets, slots and precision bores.
CNC Turning
CNC lathe turning of shafts, pins, sleeves, bushings, rings, fittings, connectors and custom turned components with external and internal threads, tapers and grooves.
5-Axis Machining
5-axis and 3+2 machining for impellers, blades, cycloidal components and parts with compound angles, reducing setups and improving positional accuracy.
Turn-Mill Machining
Multi-axis turn-mill centers complete turned and milled features in one clamping, ideal for eccentric holes, cross holes, flats and milled features on shaft-type parts.
Drilling and Tapping
Precision CNC drilling, reaming, counterboring, countersinking and tapping of metric and inch threads on hydraulic blocks, valve bodies and mounting plates.
Precision Grinding
Surface grinding, cylindrical grinding and centerless-type finishing for hardened shafts, guide components and sealing surfaces requiring tight size and fine roughness.
Gear and Worm Cutting
Custom gears, pinions, gear shafts, worms, worm wheels, sprockets and cycloidal discs machined per drawing for gearboxes, reducers and power transmission equipment.
Prototyping to Production
One-off machined prototypes, pilot batches and mass production with repeat-order support, first article inspection and consistent process documentation.
How We Manufacture Your Custom Machined Parts
A transparent, drawing-driven workflow built for OEM CNC machining projects of every size.
Drawing Review and Quotation
Send 2D drawings (PDF, DWG, DXF) and 3D models (STEP, IGES, X_T, SAT). We review dimensions, tolerances, material, finish and quantity and quote based on the print.
Manufacturability Feedback
Before cutting, we point out tolerance risks, deep pockets, thin walls, thread and tool-access issues, and propose practical options without changing the part function.
Programming and Machining
CAM programming, raw material preparation, CNC milling and turning, heat treatment and surface finishing are coordinated under one production schedule.
Inspection and Packing
First article, in-process and final inspection with calibrated instruments, followed by export-grade packing to protect precision surfaces and threads in transit.
Materials for CNC Machined Parts
We machine a wide range of metals and engineering plastics according to the grade specified on your drawing; mill material documentation can be supplied with the order when required.
Stainless Steel
304, 304L, 316, 316L, 321, 410, 420, 431 and 17-4 PH for corrosion-resistant parts, valve and pump components, food machinery, fittings and structural precision parts.
Carbon and Alloy Steel
Q235, 20#, 45# / 1045, 40Cr, 42CrMo / 4140, 4130, 20CrMnTi, 35CrMo and 40MnB for shafts, gears, flanges, hydraulic components and high-load structural parts.
Tool and Die Steel
SKD11, D2, Cr12MoV, H13, P20, S136, O1 and DC53 for cutting tools, dies, molds, fixtures, wear parts and components requiring high hardness after heat treatment.
Aluminum Alloys
6061, 6063, 6060, 6082, 7075, 2024, 5052, 5083 and ADC12 for lightweight CNC machined parts, enclosures, plates, heat-dissipating parts and color-anodized components.
Brass and Copper
H59, H62, HPb59-1 free-cutting brass, C36000, T2 red copper, C11000 and tellurium copper for fittings, connectors, electrical parts, bushings, nozzles and fluid components.
Bronze
Tin bronze QSn6.5-0.1 / C93200, aluminum bronze QAl9-4 / C95400, leaded bronze and phosphor bronze for worm wheels, bearings, bushings, nuts and heavy-wear parts.
Titanium Alloys
TA1, TA2, TA3 pure titanium and TC4 / Ti-6Al-4V for lightweight, high-strength and corrosion-resistant CNC machined parts used in demanding industrial equipment.
Engineering Plastics
POM / Delrin, PA6 and PA66 nylon, MC cast nylon, UHMW-PE, PTFE, PEEK, PVC, PC, HDPE and PP for insulators, guide parts, wear strips and non-metal custom parts.
Heat Treatment for Custom Machined Components
Heat treatment is arranged before or after finish machining according to the drawing, giving parts the required hardness, strength, toughness, wear resistance or dimensional stability.
Annealing
Softens steel, relieves internal stress and improves machinability before heavy cutting or forming, producing a stable structure for subsequent precision machining.
Normalizing
Refines grain structure and improves mechanical uniformity in carbon and low-alloy steel parts, commonly used before quenching or as a final treatment for structural parts.
Quenching and Tempering
Q+T treatment (for example 42CrMo, 40Cr, 45#) combines high strength with toughness for shafts, pins, gears and load-bearing OEM machined parts.
Carburizing
Adds a hard, wear-resistant surface layer to low-carbon steels such as 20CrMnTi and 20# while keeping a tough core - typical for gears and transmission parts.
Nitriding
Creates a very hard, low-distortion wear-resistant surface on 38CrMoAl, 42CrMo and tool steel parts such as spindles, sleeves, valve stems and precision guides.
Induction Hardening
Selectively hardens gear teeth, shaft journals, rails and wear surfaces with controlled depth, leaving the rest of the part tough and easy to machine.
Solution and Aging
Solution treatment followed by age hardening strengthens precipitation-hardening stainless steel (17-4 PH), aluminum (7075, 6061) and titanium alloys.
Stress Relieving
Low-temperature stress relief before finish machining minimizes deformation on large plates, welded structures, castings and high-precision housings.
Surface Finishes for CNC Machined Parts
Functional and decorative finishes are applied per drawing or sample, including corrosion protection, wear resistance, controlled appearance and customer-specified colors.
Anodizing
Clear, color and hard anodizing for aluminum CNC machined parts, with controlled film thickness, improved wear resistance and colors matched to samples.
Powder Coating
Durable colored powder coating on steel and aluminum parts such as brackets, covers and frames, providing even coverage and good outdoor corrosion protection.
Zinc Plating
Blue-white, yellow and black zinc plating on carbon steel fasteners, plates and machined components for cost-effective rust and corrosion protection.
Nickel and Chrome Plating
Electroless nickel, bright nickel and hard chrome plating for hydraulic parts, shafts, rollers and components needing hardness, smoothness or corrosion resistance.
Black Oxide
Blackening / black oxide finish on steel and stainless steel parts, often combined with oil, gives a thin dimensional-stable matte black finish for shafts and fittings.
Passivation
Removes free iron and contamination from stainless steel CNC machined parts to restore natural corrosion resistance on 304, 316 and 17-4 PH components.
Polishing and Brushing
Mechanical polishing, mirror polishing, electropolishing and directional brushing for stainless steel parts, food-contact components and decorative aluminum parts.
Sandblasting and Phosphating
Sandblasting creates uniform matte textures before coating; phosphating improves paint adhesion and provides mild corrosion protection on steel parts.
Industries Using Our CNC Machined Parts in China
Our custom CNC machining service supports equipment manufacturers and maintenance suppliers across a broad range of industries worldwide.
Hydraulics and Pneumatics
Hydraulic valve blocks, manifolds, cylinders, pistons, end caps, adapter plates and fluid power components with precision threaded ports and bores.
Valves and Pumps
Valve bodies, bonnets, stems, discs, seats, pump shafts, impellers, flanges and sealing components in stainless steel, bronze and alloy steel.
Gearboxes and Reducers
Gears, pinions, gear shafts, worms, worm wheels, cycloidal discs, output shafts, eccentric sleeves and reducer housings made per drawing.
Automotive and Trucks
Custom machined brackets, spacers, shafts, fittings, fixture-grade components and aftermarket specialty parts for vehicles and transport equipment.
Food and Packaging Machinery
304 and 316 stainless machined parts, rollers, guides, change parts, mounting plates and corrosion-resistant components for food and packaging lines.
Medical and Laboratory Equipment
Precision machined frames, adapters, instrument parts and custom components made from stainless steel, aluminum and medical-grade plastics.
Robotics and Automation
Robot structural plates, joint components, grippers, fixtures, sensor mounts, linear module parts and lightweight 7075 aluminum CNC machined parts.
Agricultural Machinery
Shafts, hubs, brackets, linkage parts, sprockets, bushings and wear components for harvesters, irrigation systems and farm equipment.
Marine and Offshore
316 stainless, bronze and aluminum bronze machined fittings, shafts, flanges and custom hardware resistant to saltwater and humid environments.
Energy and Electrical
Copper and brass conductive parts, terminal connectors, generator components, turbine auxiliary parts and custom enclosures for energy equipment.
Textile and Printing
Precision rollers, shafts, gears, cams, guide blocks and replacement parts for textile machines, printers, converters and converting equipment.
Material Handling
Conveyor rollers, pulleys, idler shafts, bearing seats, brackets and custom machined components for conveyors, cranes and lifting equipment.
Precision CNC Machining and Strict Quality Testing
Precision machined dimensions are verified through strict quality testing at every stage, using calibrated equipment traceable to national measurement standards.
| General tolerances | ISO 2768 medium class for unspecified dimensions, unless the drawing defines tighter requirements |
|---|---|
| Standard CNC tolerance | Typical linear dimensional tolerance of ±0.01 mm for milling and turning |
| Tight-feature tolerance | Critical precision features machined and measured down to ±0.005 mm |
| Precision grinding | IT5 to IT6 grade, with roundness and cylindricity controlled down to approximately 0.002 mm |
| Bore and shaft fits | H7 / H6 precision bores and h6 / g6 / js6 shafts according to drawing fit requirements |
| Surface roughness | Ra 0.8 μm as a standard precision finish; Ra 0.4 μm and finer achievable by grinding |
| 2D profile projector | 2D projector measuring with an accuracy of 2.5 micrometers (0.0025 mm) for profiles and small features |
| CMM 3D inspection | Coordinate measuring machine for complex 3D geometry, position, true position and geometric tolerances |
| Thread inspection | GO / NO-GO ring gauges and plug gauges for metric, unified and pipe threads |
| Inspection stages | First article inspection, in-process patrol inspection and 100% final inspection before packing |
CNC Machining Equipment and Inspection Equipment
Our China CNC machining workshop is equipped with CNC turning centers, machining centers, drilling and tapping equipment and precision measuring instruments.
From a Single Piece to Large Batch Production
Flexible order quantities for custom CNC machined parts. The quantity ranges below are indicative; we quote every project according to its actual requirements.
Prototype / Single Pieces
One-off CNC machined prototypes and 1 to 10 piece sample orders for design verification, fit checks, exhibitions and replacement of obsolete spare parts.
Low-Volume Batches
Pilot and small batch production from around 10 to 500 pieces for new product launches, custom machinery builds and maintenance stock.
Mid-Volume Production
Recurring batches from roughly 500 to 5,000 pieces with optimized fixturing, stable cycle times and batch-to-batch dimensional consistency.
High-Volume / Mass Production
Large batch production above 5,000 pieces, repeat blanket orders and scheduled releases with first article approval and retained inspection records.
Examples of Custom Machined Parts We Produce
A representative index of non-standard OEM machined parts manufactured to customer drawings every month.
- Hydraulic valve blocks and manifolds
- Gear shafts and pinion shafts
- Worm shafts and worm wheels
- Cycloidal discs and eccentric sleeves
- Precision impellers and fan wheels
- Custom flanges and flange adapters
- Bushings, sleeves and liners
- Spacers, washers and shims
- Shafts, spindles and axle pins
- Couplings, pulleys and sheaves
- Brackets, mounts and support plates
- Mounting plates and base plates
- Bearing housings and bearing seats
- Gearbox covers and reducer cases
- Pump bodies and pump couplings
- Valve stems, bonnets and discs
- CNC machined fittings and connectors
- Adapters, reducers and transition pieces
- Precision gears, racks and sprockets
- Rollers, drums and guide blocks
- Nozzles, jets and spray bodies
- Clamps, jaws and fixture plates
- Cams, cam followers and levers
- Threaded inserts and custom nuts
The CNC Machining Searches That Lead Customers to Our Factory
Buyers sourcing from China use a wide mix of factory, process, material and part-name searches. The groups below reflect the terms our custom CNC machining service is built to match.
Factory and Service Searches
- China CNC machining
- custom CNC machining
- CNC machining service China
- OEM CNC machining
- China CNC machining factory
- China CNC machining parts manufacturer
- CNC machined parts in China
- OEM CNC machining parts in China
- custom machined parts China
- precision CNC machining China
- CNC machining supplier in China
- CNC machining company China
Process and Drawing Searches
- CNC machined parts per drawing
- custom parts according to drawing
- non-standard CNC machined parts
- made-to-print machined components
- CNC milling parts China
- CNC turned parts China
- 5-axis CNC machining China
- custom CNC turning and milling
- precision machined components manufacturer
- one-off CNC machined prototypes
- small batch CNC machining
- high volume CNC machined parts
Material-Based Searches
- CNC machined stainless steel parts
- CNC machined aluminum parts
- CNC machined 304 / 316 stainless parts
- CNC machined 6061 / 7075 aluminum parts
- CNC machined brass and copper parts
- CNC machined bronze worm wheel
- CNC machined titanium parts
- CNC machined 42CrMo alloy steel parts
- CNC machined SKD11 / H13 tool steel parts
- CNC machined engineering plastic parts
- CNC machined POM / PEEK / nylon parts
- anodized aluminum CNC machined parts
Part and Function Searches
- custom hydraulic valve block manufacturer
- CNC machined gear shaft China
- custom worm gear and worm shaft
- cycloidal drive disc machining
- precision CNC machined flanges
- CNC machined bushings and sleeves
- CNC machined shafts and spindles
- CNC machined brackets and mounting plates
- custom pump and valve components
- CNC machined couplings and pulleys
- precision impeller CNC machining
- custom bearing housings and seats
Why Buyers Choose Our China CNC Machining Service
Practical advantages built around quality, flexibility and clear communication for OEM machined parts.
Manufactured Exactly to the Print
Dimensions, tolerances, threads, chamfers, material grade, heat treatment hardness and surface finish follow the drawing; deviations are never introduced silently.
Flexible Quantities
From a single replacement part or prototype to mass production batches, with the same drawing review and inspection discipline regardless of order size.
Broad Material and Finish Coverage
Metals, plastics, heat treatment and a full range of surface finishes are coordinated through one accountable production and quality team.
Strict Dimensional Verification
CMM inspection, 2D profile projector measurement at 2.5 μm accuracy, calibrated gauges and recorded first article and final inspection results.
Clear English Communication
Engineering-minded English correspondence, careful reading of drawings and standards, and proactive feedback before material is cut.
Built for Repeat Business
Stable processes, retained tooling and programs, archived inspection data and consistent quality across repeat and scheduled batch releases.
Your Long-Term China CNC Machining Partner
If your team searches for China CNC machining, custom CNC machining, OEM machined parts, CNC machined parts in China or OEM CNC machining parts in China, our workshop is set up to manufacture exactly the components your drawings define. We handle non-standard, made-to-order parts that standard catalog suppliers cannot provide - precision CNC milled blocks and plates, CNC turned shafts and fittings, 5-axis machined profiles, ground hardened components and custom gear and reducer parts.
As a China CNC machining parts manufacturer working for export markets, we combine a wide material range, coordinated heat treatment and surface finishing, strict dimensional inspection with CMM and 2D projector measuring, and flexible quantities from one prototype to mass production. Send your drawings and 3D models, and our engineering team will review every dimension, tolerance and finish requirement and prepare a clear quotation for your custom CNC machining project.
About Us
We provide custom machined parts, 5-axis linkage CNC machining, and the design, production, and assembly of machinery and equipment.