Precision Swiss Turned 316L Stainless Steel Micro Nozzle 0.2mm Orifice Ra 0.4μm Medical Grade

This micro nozzle is machined from Stainless Steel 316L (316L (1.4404) medical grade) to ±0.005mm in the critical dimensions, then finished by Electropolished Ra 0.4μm. It is produced on CNC turning centres that are dedicated to small and medium volume precision work, so every dimension on the drawing is generated by the machine rather than by hand fitting. Typical users are engineers who have already been let down by a supplier that quoted a tolerance it could not hold, and who need the part to fit the first time without sorting or rework on the assembly line.

• Swiss Type Micro Turning: Swiss lathes with guide bushings hold 0.2mm orifice diameter to ±0.005mm without deflection
• Orifice Roundness Control: Roundness held at 0.003mm keeps spray pattern and flow rate stable shot to shot
• Electropolished Flow Path: Electropolishing removes burr microedges and passivates the bore for clean fluid handling
• Flow Tested Individually: Each nozzle is air flow tested and sorted into ±3 percent flow bands
• Medical Grade Cleanliness: Parts are degreased, ultrasonically cleaned and packed in cleanroom bags

The process route is fixed before metal is cut. Bar stock is verified against the purchase specification and the heat number is logged, then a first article is turned and measured in full. Only after the first article is signed off does the lot run. Critical features on this micro nozzle are controlled to ±0.005mm with a process capability target of Cpk 1.33 or better, and the operator checks the feature at a defined frequency with the gauge stated on the control plan. Where the drawing calls for Electropolished Ra 0.4μm, the finishing step is carried out in house and the result is measured, not assumed. Sample parts go to the CMM for full dimensional verification, and the recorded results ship with the lot as a first article inspection report in PPAP level 3 format when a customer program requires it.

Questions are handled by engineers rather than by sales staff. Our team reviews each drawing for manufacturability, flags features that would drive cost without adding function, and proposes the tolerance band that actually matters for the assembly. That review is free and is returned within 24 hours together with a quotation. When a part fails in the field, we ask for the sample back, section it if needed and report what the failure mechanism was, because a supplier that cannot explain a failure cannot prevent the next one.

• Machines: 50+ CNC units including Swiss type lathes, 3, 4 and 5 axis machining centres and turn-mill centres from Citizen, Star, Doosan and Mazak.
• Quality lab: CMM, 2D vision measurement, roughness tester, hardness tester, salt spray chamber and spectral analyser for material verification.
• Team: 15+ mechanical engineers covering DFM review, process design, fixture design and failure analysis.
• Capacity: 500,000+ precision turned parts per month with stable output and on time delivery tracking.
• Quality system: ISO 9001:2015 certified, SGS audited, material traceability from mill heat to finished part.
• Export experience: parts shipped to 30+ countries across North America, Europe, Japan, Korea and Southeast Asia.

Medical nebulizers, analytical instrument spray chambers, inkjet printheads, fuel injector pilots and precision lubrication nozzles.

Parts are degreased, dried and packed so that the surface finish specified above arrives intact. Standard packing is VCI paper or individual PE bag, a partitioned foam tray for form features, and an export grade corrugated carton on a pallet, with the lot number and heat number marked on the outside. Parts are warranted against material and workmanship defects for 12 months from delivery. If a part is found outside the drawing, we replace it at our cost and we pay the return freight for the defective lot. Third party inspection by SGS, BV or TUV can be arranged before shipment at your request, and we work under NDA where drawings are confidential.

Q: How do you measure a 0.2mm orifice? A: We use a video measuring system with backlight and a pin gauge set. Diameter, roundness and edge condition are recorded for each cavity, and the flow test confirms the result functionally.

Q: Can you guarantee flow rate rather than just orifice size? A: Yes. We offer flow banding on air or water at a stated pressure, which is the practical specification for nozzle performance.

Q: Do you offer cleanroom packaging? A: Parts are cleaned ultrasonically, dried with filtered nitrogen and double bagged in a cleanroom. Certificate of cleanliness is available.

Q: What is the smallest batch you will run on a Swiss lathe? A: Trial lots start at 50 pieces. Below that the setup cost dominates and we will tell you honestly if the piece price is not sensible.

Q: How do you confirm the Stainless Steel 316L material before it is machined? A: Every bar is checked against its mill certificate with an optical emission spectrometer before it goes to a machine. If the chemistry does not match the grade, the bar is rejected and returned. The certificate for your lot is filed under the heat number and can be sent with the shipment or on request.

Q: What happens if a delivered part measures outside the ±0.005mm tolerance? A: Send the measurement and the lot number. We check the recorded values for that lot, replace the parts at our cost and cover the return freight. Because each critical feature is recorded during production, we can trace the deviation to a tool wear step, a fixture shift or a gauge issue and correct the process before the next lot runs.

Send a 2D drawing, a STEP file or a sample and you will have a manufacturability review and a firm quotation within 24 hours. Trial orders from a single piece are accepted, so the tolerance claim can be checked on your own assembly before a production order is placed.