Precision Shaft Components
CNC turning, mill-turn and precision grinding for difficult alloys. We machine shafts that carry bearings, seals, threads and critical interfaces where roundness, concentricity and surface finish decide whether your assembly works.
As a Shenzhen-based partner, we support engineering, procurement and quality teams from first prototype through controlled low-volume and repeat production. If your shaft program demands manufacturability, process control, documentation and dependable communication—not just the lowest unit price—we are a strong fit.
What you get when we make your shaft components
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Controlled bearing fits and runout: You get roundness down to 0.002 mm and diameter tolerances down to ±0.005 mm, achieved by combining stable turning with post-process grinding.
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Fewer setups, stronger feature relationships: You get concentric shoulders, threads and grooves from mill-turn machining that preserves datums and reduces stack-up error.
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Predictable results in difficult alloys: You get shafts in Inconel, Hastelloy, titanium, duplex stainless and MP35N with consistent finishes and dimensional stability.
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Inspection evidence and traceability: You get first article inspection, full dimensional reports, material certificates and project-specific quality records.
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Practical engineering support: You get drawing review, DFM feedback, tolerance guidance, fixture planning and a documented machining route before we cut metal.
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Clear schedules you can plan around: You get realistic lead times, proactive updates and risk-reduction options (expedite, split deliveries, pilot batches).
Why speed matters—and how our fast machining helps you
Speed without control creates rework. Our fast prototype cycles shorten your technical validation without increasing supply risk.
Early fit-and-function proof
You get 5–10 business day prototypes to validate bearing press fits, seal leakage, torque transmission, vibration and thermal growth before committing to production.
Shorter design loops
You get inspection data and feedback within days, so engineers can adjust tolerances or interfaces while the program is still flexible.
Schedule recovery
You get expedited re-sourcing when a supplier misses, supported by stable mill-turn processes and grinding that protect critical surfaces.
Lower total cost of change
You get fewer scrap iterations because we plan fixtures, toolpaths and finishing steps around your material and features from day one.
Typical precision shaft features we machine
Bearing and seal journals with ground finishes
Shoulders, undercuts, O-ring grooves and snap-ring grooves
Threads (metric/UN), internal and external
Cross holes, oil holes, ports and radial features
Keyways and narrow slots (milled or EDM)
Tapers, chamfers and precision faces
Male/female pilots and datum features
Marking and identification for traceability
Our approach to difficult alloys
We plan the machining route around material behavior, geometry and tolerances before cutting:
Nickel and cobalt alloys
We manage tool wear, heat and work hardening with controlled feeds, sharp tooling and flood coolant, then grind critical diameters for final size and finish.
Titanium
We stabilize thin sections with fixtures, optimize chip evacuation and finish grind bearing journals to avoid galling.
Duplex/super duplex stainless
We balance cutting forces to limit distortion, protect surface integrity and use passivation after machining.
17-4 PH / 15-5 PH
We machine in the correct condition, perform heat treatment where required and grind post heat treat to final dimensions.
Materials we machine for shaft programs
Nickel-based alloys
Inconel 718/625/600/601/690/706/725, Hastelloy C-276/C-22/X, Monel 400/K-500, Waspaloy, Nimonic
Titanium
Grade 2/5/9/12/23
Stainless
17-4 PH, 15-5 PH, 316L, 304, 321, 410/420/440C
Duplex and super duplex
2205, 2507
Cobalt alloys
Stellite, L605, MP35N
High-temperature steels
A286, Nitronic 50/60
Specialty metals
Nitinol, molybdenum, tungsten, copper-nickel
Shaft components machining capabilities
| Parameter | Standard Capability |
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| Maximum turning diameter | Ø500 mm |
| Maximum turning length | 1,000 mm |
| Mill-turn maximum diameter | Ø400 mm |
| Mill-turn maximum length | 800 mm |
| Swiss turning bar diameter | Ø0.5–32 mm |
| Swiss maximum part length | 300 mm |
| Maximum bar capacity (turning) | Ø80 mm |
| Diameter tolerance | Down to ±0.005 mm |
| Roundness | Down to 0.002 mm |
| Concentricity | Down to 0.008 mm |
| Cylindricity | Down to 0.003 mm |
| Minimum machined diameter (turning) | Ø1.0 mm |
| Minimum thread size | M1.0 (turning), M0.8 (Swiss) |
| Surface finish, turned | Typical Ra 1.6 μm |
| Surface finish, ground | Down to Ra 0.2 μm |
| EDM slot width (wire EDM) | Minimum 0.15 mm |
| Internal corner radius (sinker EDM) | Down to R0.05 mm |
| Cross drilling minimum hole | Ø0.5 mm |
| Positioning accuracy (mill-turn) | ±0.005 mm |
| Repeatability (mill-turn/Swiss) | ±0.003 mm |
| Prototype lead time | 5–10 business days |
| Standard lead time | 10–20 business days |
| Expedited service | Available |
Notes: Actual tolerances depend on geometry, material and inspection strategy. We confirm achievable limits during DFM and quoting. For bearing journals and sealing surfaces, we recommend grinding for consistent size and finish across alloys.
Inspection and documentation
What you receive with your shafts:
- • First Article Inspection (FAI) and ballooned drawing report on request
- • Full dimensional inspection report (CMM and optical when applicable)
- • Material test report and mill test certificate
- • Certificate of Conformance
- • Surface roughness report for bearing/seal journals
- • Heat treatment and coating certificates when applicable
- • Material and lot traceability, inspection photos on request
Inspection environment and capability
- • Temperature-controlled inspection room
- • CMM measuring range 700 × 1,000 × 600 mm, accuracy up to 1.8 + L/300 μm
- • Optical measurement accuracy ±0.002 mm, height gauge resolution 0.001 mm
- • Hardness testing: Rockwell, Brinell, Vickers
Example shaft applications we support
Energy and marine
Pump shafts, rotor shafts and impeller hubs
Oil and gas
Valve stems, cages and actuation shafts
Automation and robotics
Motor shafts, linear actuator shafts and precision pins
Medical
Surgical/medical shafts and mandrels in titanium and stainless
Semiconductor
Equipment shafts with tight runout and controlled threads
Special processes for shaft programs
- • Precision grinding (surface, cylindrical, centerless) for final bearing/seal fits
- • Wire EDM and sinker EDM for narrow slots, keyways and sharp internal features
- • Heat treatment, passivation and coatings per spec
- • Deburring and cleaning suited to high-purity and medical applications
- • Marking and assembly support where required
How to request a quote (RFQ)
To help us quote quickly and accurately, please include:
- • 2D drawing (PDF) with tolerances and critical features identified
- • 3D model (STEP/IGES) for geometry reference
- • Material grade and condition (e.g., 17-4 PH H900, Inconel 718)
- • Expected quantities (prototype, batch or repeat program)
- • Required documentation (FAI, dimensional report, CoC, certs)
- • Surface requirements (bearing/seal journals, grinding needs)
- • Target date and any expedite constraints
- • Any special processes (heat treat, passivation, coating, EDM)
Supported file formats: STEP, STP, IGES, IGS, X_T, X_B, SLDPRT, SAT, PDF, DWG, DXF.
Maximum upload size: 500 MB per RFQ.
Drawing units: millimeters and inches.
What happens after you send an RFQ
We review materials, geometry, tolerances, surface requirements and inspection strategy.
You receive DFM feedback and a defined machining route (turning/mill-turn, grinding, EDM, special processes).
We provide pricing, lead time, documentation inclusions and risk-reduction options (pilot batches, staggered deliveries).
On award, you get a confirmed schedule, progress updates and a documented inspection plan.
Packaging and logistics
- • Export-ready protective packaging to prevent surface damage on journals and threads
- • Part separation and labeling with lot traceability
- • International shipping support to North America, Europe, the UK, Australia, New Zealand and advanced manufacturing markets in Asia
Ready to move your precision shaft components forward?
Send your RFQ with drawings and material specifications, and we'll respond with DFM feedback, a stable production route and a clear delivery plan.
Start Your RFQRequest a Quote
Send us your drawings and material specifications. We respond with DFM feedback, pricing, lead time and a documented production route.
Request a Quote
Tell us about your component requirements and material challenges.