We are a China-based custom CNC machining workshop focused on 5-axis simultaneous machining of impellers, turbine wheels, compressor wheels, diffusers and other complex rotating components. Every part is manufactured strictly per the customer drawing, 3D model or physical sample — from a single CNC machined prototype impeller to recurring large-volume production series.
Our precision 5-axis CNC machined turbomachinery parts serve turbochargers, centrifugal compressors, blowers, micro gas turbines, high-speed pumps and aerospace auxiliary power units, and are routinely produced from high-temperature superalloys, titanium alloys, aluminum alloys and stainless steels selected for the operating temperature, speed and media of each application.
A cross-section of recent CNC machined and cast-then-machined work: solid impellers, 5-axis milled turbine and compressor wheels, diffusers and nozzle rings across aluminum, stainless, 17-4 PH and super-high-temperature alloys.
Impellers are our core specialty, but the same 5-axis capability covers the complete rotating assembly around them. The following custom CNC machined parts are produced from customer drawings, CAD models or reverse-engineered samples, in solid bar, forgings or cast-and-machined blanks.
Open, semi-open and closed impellers with splitter blades, swept blades and 3D twisted vanes. CNC machined aluminum impellers for compressors, 5-axis CNC machined titanium impellers for high-speed rotors, and stainless steel impellers for corrosive media — milled from solid, forged or cast blanks exactly per drawing.
Vaneless and vaned diffusers with narrow aerodynamic passages matched to the impeller outlet flow. Precision CNC milled diffusers in aluminum, stainless steel and high-temperature alloys, with controlled vane spacing, flat sealing faces and repeatable throat dimensions.
Adjustable and fixed vane nozzle assemblies that guide exhaust gas into the turbine wheel. Individual nozzle vanes and complete vane clusters are CNC machined from heat-resistant steels and superalloys, with consistent vane angles, smooth flow surfaces and precise pivot bores.
Nozzle rings and shroud rings that locate the nozzle vanes of turbochargers and small turbines. CNC machined or cast-then-machined nozzle rings in super-high-temperature alloys, with accurate hole circles, profile slots and heat-resistant geometry that stays dimensionally stable in service.
Compressor housings, bearing housings, volutes and casings machined from castings, forgings or solid stock. CNC milled housing components with precise bores, sealing grooves, mounting faces, threaded ports and complex internal contours delivered ready for assembly.
Journal bearings, thrust bearings, bearing sleeves and bushings for high-speed rotating assemblies. CNC turned and milled bearing parts in stainless, bronze and alloy steels, with fine bore finishes, controlled roundness and stable running clearances.
Turbocharger shafts, rotor shafts, turbine shafts and stepped drive shafts. Precision CNC turned, milled and ground shafts with tight concentricity, keyways, threads, seal seats and balancing features, produced from stainless steel, alloy steel and high-temperature alloy.
Turbine wheels, compressor wheels, blisks and integrated rotor assemblies beyond plain impellers. 5-axis CNC machined bladed rotors cut from one solid blank merge hub and airfoils into a single part, reducing assembly stack-up while raising strength and spin safety.
Material selection follows the operating temperature, rotational speed, corrosive environment and mechanical load printed on the drawing. Below are the alloys most frequently used for CNC machined impellers, nozzle rings, shafts and housings; other grades can be quoted on request.
For CNC machined turbine wheels, nozzle rings, vane nozzles and combustor-adjacent parts exposed to sustained heat, creep, oxidation and hot exhaust gas. These heat-resistant alloys retain strength where ordinary steel would soften.
For 5-axis CNC machined high-speed impellers, lightweight rotors and wet compressor stages. Titanium combines a high strength-to-weight ratio with corrosion resistance, lowering rotor inertia and permitting higher tip speeds.
For CNC milled compressor impellers and blower wheels where low inertia, fast spin-up, high thermal conductivity and a fine machined surface finish matter. Aluminum is the default choice for ambient-temperature air stages.
For impellers, shafts, housings and diffusers handling corrosive gas, steam, chemicals, salt spray or hygienic media. Precipitation-hardening 17-4 PH adds strength for heavily loaded thin blades.
For CNC turned shafts, bearing sleeves, wear sleeves and drive components that demand toughness, hardenability and surface durability under torque, vibration and repeated load cycles.
For bearing bushes, thrust washers, seal rings, conductive rings and heat-conductive components inside rotating equipment, where conformability, lubricity or thermal transfer is required.
An impeller is among the most demanding parts a CNC machine can cut: dozens of curved, thin-walled blades must each match the aerodynamic model while the whole rotor stays balanced for rotation at tens of thousands of revolutions per minute. That is why impeller work depends on true 5-axis simultaneous machining rather than ordinary 3-axis milling.
Our 5-axis simultaneous machining centers keep all cutting axes in coordinated motion while the part stays in a single clamping, which removes the alignment errors that come from repeated re-fixturing. Full 5-axis interpolation handles swept blades and undercuts in one continuous cut; 3+2 positional machining is used where a fixed tilt is faster and equally accurate. Turning, turn-mill and grinding operations complete bores, shafts and sealing faces on the same production line. The values below are typical ranges reached on properly fixtured CNC machined rotating parts.
General linear tolerances land around IT5 to IT7 grades, with critical bores and mating features held to about ±0.005 mm when the drawing requires it.
Airfoil and blade-surface deviation against the supplied 3D model is controlled to roughly a few hundredths of a millimetre, including leading and trailing edges.
As-milled flow surfaces typically reach Ra 0.4–1.6 µm; polishing, tumbling or abrasive-flow finishing can bring visible flow paths toward Ra 0.2 µm.
Bore-to-outer-diameter concentricity and axial runout are held to the hundredths-of-a-millimetre class needed for smooth high-speed rotation.
Swept blades, splitter blades, undercuts and angled holes are finished without moving the part, preserving positional relationships between features.
Fixed tooling, proven CAM programs and in-process measurement keep the first article and every later volume batch geometrically consistent.
A complete in-house process chain takes each part from raw blank to inspected finish: multi-axis CNC cutting for complex geometry, CNC turning for rotational features, and dimensional verification by optical and coordinate measurement before shipment.
3-axis and multi-axis milling of prismatic bodies, contoured housings, diffusers and flanged components.
Precision turning of shafts, sleeves, bores, threads and sealing seats with controlled roundness and finish.
Simultaneous 5-axis milling of impellers, blisks and turbine wheels with twisted blades and deep channels.
Non-contact optical checking of edge profiles, small radii, angles and thin-blade geometry.
Coordinate-measurement verification of bores, hole positions, flatness and geometric tolerances.
Blade and flow-channel point clouds compared against the 3D model to confirm profile and spacing.
Order quantity never limits the quote. The same engineering team supports a one-off CNC machined prototype, a maintenance spare, a pilot series and a recurring annual program, scaling fixturing and process planning as volumes grow.
A single custom 5-axis machined impeller for a new design, aerodynamic testing, bench validation or fit-check samples, with fast iteration between design revisions.
Runs of roughly 2 to 50 pieces for pilot products, aftermarket replacement of legacy impellers and customer maintenance stock built against a drawing or sample.
Repeat batches built on fixed tooling and dedicated fixtures, with locked CAM programs and process records so every delivery machines identically.
Large-volume programs across multiple 5-axis and turn-mill machines, with planned process control, in-process checks and per-batch traceability records.
Custom CNC machined rotating parts from our workshop appear wherever gas, air or fluid energy is compressed or expanded at high speed.
CNC machined aluminum compressor impellers, titanium upgraded wheels, nozzle rings and shaft-and-wheel assemblies for OEM, aftermarket and motorsport turbo programs.
5-axis CNC machined titanium impellers, blisks and turbine demonstrators for small engines, auxiliary power units and university or institute research projects.
Custom centrifugal compressor impellers, diffusers and blower rotors in aluminum and stainless steel for plant air, process gas and vacuum applications.
Inconel and superalloy turbine wheels, vane nozzles and hot-section components for micro turbines, expanders and distributed energy equipment.
Large custom impellers, turbocharger components and cooling-pump rotors built to withstand vibration, salt atmosphere and continuous heavy-duty load.
Stainless and duplex steel pump impellers, compressor stages and expander wheels for corrosive process media, cryogenic service and energy-recovery turbines.
Production follows the customer's 2D drawing and 3D model; STEP, IGES, X_T, DWG, DXF and PDF files are all accepted. Geometric tolerancing, surface roughness calls, thread specs and material designations are followed exactly as printed, and the blank form — bar, forging or casting — is agreed before any metal is cut.
When no drawing exists, work starts from the physical part: the sample is measured and digitized, a 3D model is reconstructed and confirmed, and matching — or improved — CNC machined replacements are produced for legacy, obsolete or unavailable impellers and rotating components.
As a China custom 5-axis machining supplier, we combine engineering review, solid-model CAM programming, controlled 5-axis simultaneous machining and final dimensional inspection to deliver CNC machined rotating parts that match the drawing, the sample and the application — whether the order is one complex titanium impeller or a recurring series of aluminum compressor wheels, Inconel nozzle rings, diffusers, shafts and housings.