Brass, titanium and stainless components machined on 5-axis mill-turn centers. Tolerances to ±0.005 mm, finishes from as-machined to Ra 0.2–0.8 μm, and a DFM report back within 12 hours.
Most motorcycle part defects are not random. They trace back to a process decision made early.
Ti-6Al-4V galls against stainless fasteners when the thread is cut dry or the pitch diameter runs to the low limit. The joint seizes at final torque and the part is scrapped. Thread milling plus a controlled pitch diameter range avoids it.
C36000 machines fast, but the sharp corner between hex and shank concentrates stress. Under vibration the fitting cracks within a few hundred hours. A generous radius plus a stress-relief pass fixes it.
Hardcoat anodizing adds 25–50 μm per surface. A bore toleranced at ±0.01 mm before coating closes up and the bearing will not seat. We mask critical bores or pre-machine undersize.
A shop quotes three weeks, then finds a 0.4 mm wall and a deep pocket that needs a custom tool. Production stalls. We return a DFM report with the quote so the schedule is real.
Turning, milling and drilling on the same machine reduces the error that accumulates across fixtures.
Motorcycle parts mix round and non-round features: a shaft body with a flat, a hub with drilled flanges, a fitting with a hex and a cross-hole. Each extra fixture adds a datum shift. Our 16 mill-turn centers cut OD, bore, thread and cross-features without releasing the part.
For brass and titanium this matters more than for aluminum. Brass moves under light clamping, titanium springs back after the cut. Keeping one datum through the operation removes both problems from the tolerance stack.
Titanium conducts heat poorly. The cutting edge keeps the heat, so a tool that runs fine in 6061 burns through in Ti-6Al-4V. We run lower surface speed, higher feed per tooth and flood coolant, and we change inserts on a count rather than on a squeal.
Brass C36000 is the opposite case. It cuts clean at high speed, but leaded grades are not suited to every application, and thin walls deflect if the chuck pressure is set for steel. Beryllium copper and C27400 get their own programs and their own inspection plan.
Use this to pick a route before you send a print.
| Part feature | Recommended route | Why |
|---|---|---|
| Shaft under Ø60 mm, round features only | CNC turning | Single-axis work, lowest cost per part |
| Shaft with flats, cross-holes or a hex | Mill-turn | One datum, no second fixture |
| Complex bracket, 5 faces | 5-axis machining | Fewer setups, tighter feature-to-feature position |
| Thin-wall brass fitting | Turn, light clamp, radius corners | Prevents deflection and stress cracking |
| Titanium threaded insert | Thread mill, not tap | Controls pitch diameter, avoids galling |
| Small batch, 1–50 pieces | No dedicated fixture | Setup cost stays out of the unit price |
Most parts use one of these routes. Some use three.
Linkages, triple clamps and housings with features on five faces. 16 simultaneous 5-axis centers, up to 4,000 mm travel.
Cross-drilled shafts, hubs and flanges indexed on a Ø400 mm rotary table.
Plates, covers and brackets where all features sit on one face. 27 machines available.
Turned bodies, spacers and fittings, with milled flats and drilled patterns in the same setup.
One-off fit checks before tooling. No minimum order quantity, prototype to 10,000+ parts.
Anodizing, plating, powder coating, bead blasting, brushing and laser marking in house.
Numbers are what we hold on production, not best-case lab results.
| Parameter | Capability | Notes |
|---|---|---|
| General tolerance | ±0.005 mm | ±0.0002 in on critical features |
| Fine finish | Ra 0.2–0.8 μm | Bearing bores, seal surfaces |
| Standard finish | Ra 0.8–1.6 μm | Most mating surfaces |
| As-machined | Ra 1.6–3.2 μm | Non-critical faces |
| Maximum part size | 4,000 mm | 4,000 × 400 × 150 mm travel |
| Inspection | 100% before shipment | Reports on request |
| Laser marking | 1.5 mm min character height | Part numbers, traceability |
| Qualification rate | 99.99% | Measured on shipped lots |
Fifteen years on turned and milled metal parts, three wholly-owned plants and 7,600 m² of floor space in Dongguan.
16 simultaneous 5-axis centers, 12 four-axis mills, 27 three-axis machines and 16 mill-turn centers. Scheduling stays inside our walls.
Held across milled features, not just on a turned diameter measured at the machine.
Drawing in, quotation plus manufacturability notes back within 12 hours.
Production can start within 24 hours once the print and material are confirmed.
Also ISO 13485 for medical and ISO 27001 for information security. NDA on request.
Spacers, adapters and mount blocks that see constant load and heat cycling.
Calipers mounts, linkage arms and bushings where a bore that drifts ruins the fit.
Brass bodies with cross-holes and tapered threads that must seal on the first torque.
One-off brackets and adapters for frame changes, before any tooling is cut.
Yes, if the thread is milled rather than tapped. Thread milling lets us hold the pitch diameter in a controlled band instead of running to the low limit, which is where galling starts.
We also specify the mating fastener material. A titanium part with a titanium bolt needs a dry-film lubricant or a different alloy pair. We flag that in the DFM report.
It depends on the grade. C36000 is free-machining and good for fittings, spacers and low-load bushings. C27400 and beryllium copper carry more load and wear better.
For a stressed bracket, aluminum 7075 or 17-4PH is usually the better answer. We will say so rather than quote brass.
±0.005 mm on diameters up to the machine capacity, but length matters. Beyond roughly 300 mm, thermal growth and deflection start to eat into that.
On long shafts we hold ±0.01 mm as a working tolerance and inspect at 20 °C. If you need tighter, we discuss a temperature-controlled cut and a slower cycle.
Hardcoat adds 25–50 μm per surface, so a bore needs to be pre-machined undersize or masked. We decide which in the DFM review.
The drawing should call out which surfaces are functional. Coating everything usually means the critical bore is out of tolerance when the parts come back.
There is no minimum order quantity. We run single prototypes and batches over 10,000 parts on the same equipment.
For one or two pieces we skip dedicated fixtures, so setup cost stays low. For volume, we build fixtures and cut cycle time.
A STEP, STP, IGES or X-T file plus a 2D drawing with tolerances, material and finish. SolidWorks, Pro/Engineer, AutoCAD DXF and DWG all work.
A PDF or TIF drawing is fine if that is what you have. Missing tolerances get flagged rather than guessed.
Raw material is verified on receipt, dimensions are monitored during the run, and every part gets a final inspection before packing.
We use CMM, tool microscope, multi-joint arm, height gauges and roughness measurement. Reports are available on request.
Yes. NDAs are available on request, and uploads are handled as confidential. We hold ISO 27001:2022 for information security.
We do not share customer drawings, part numbers or project details.
Upload your STEP file and 2D print. We come back within 12 hours with pricing, lead time and any manufacturability notes worth acting on.
12-hour quote100% inspectionNo minimum order quantityNDA on request
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Upload your 3D model or 2D drawing and get a quotation with a free DFM analysis. Maximum processing size 4,000 mm.
CNC Metals 13 grades
CNC Plastics 10 grades
Machines & processes 12 options
Surface & post-processing 10 options
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