Small shafts & pins
Stepped diameters, slender profiles and locating features. Show the mating fits, straightness and datum requirements on your drawing.
Sample orders from 100 pieces
Swiss CNC Machining Services for Small Precision Parts
Swiss-type turning for custom shafts, pins, sleeves and connector contacts. Send your drawing, material and quantity for a machining review and quotation.
Small turned parts shown beside a millimeter ruler.
- 100
- Pieces minimum for sample orders
- 13
- Swiss-type & sliding-headstock machines
- Ø32 mm
- Standard maximum machining diameter
Swiss turning and micro machining
For small turned parts with slender profiles, related diameters and front or back features. OUJI reviews the complete drawing and quantity to select the machine, workholding and inspection method.
Contacts & inserts
Connector contacts, terminal pins and threaded inserts. Include bore, thread, knurling and plating requirements.
Sleeves & thin-wall parts
Small bores and lightly supported walls need a machining and inspection plan. Identify burr-sensitive edges and surfaces that must remain unmarked.
Part diameter & length
The current Citizen and STAR lineup covers miniature work on the R04VI and larger turned parts up to a standard Ø32 mm machining diameter. Length depends on the selected machine and guide-bushing configuration.
Critical dimensions
Selected critical dimensions are reviewed to ±0.005 mm. Material, geometry, workholding and the measurement method determine which features can meet this target.
INSIDE THE WORKSHOP
Small parts on the Citizen R04VI
Our smallest finished outside diameter produced on the Citizen R04VI to date is Ø0.5 mm. Feasibility for your part depends on material, part length, tooling and inspection requirements and is confirmed after drawing review.
Our five R04VI machines have a standard maximum machining diameter of Ø4 mm. The wider Swiss-type lineup includes STAR SR-32JII Type B, STAR SB-20R Type N, Citizen L32 IX and A20VII machines.
See the machining processView Swiss-type equipment and machine limits
FROM OUJI PRODUCTION
Swiss machined parts and process records
A thin-wall production order and a micro-contact machining sequence show how part features, process decisions and inspection fit together.
SUS420J2 · 1,000 PARTS
Thin-wall machining on a STAR SP-23
All cutting operations and the S2 marking were completed within the SP-23. Machining and feed-rate adjustments brought the cycle from 10 to 8 minutes per part.
- Drawing requirement
- 17.3 ± 0.02 mm
- Optical reading
- 17.310 mm
The reading documents one feature on one inspected part. Heat treatment and inspection were separate operations.
Read the production case
BRASS CONTACTS · PROCESS PHOTOGRAPHS
From bar stock to finished contacts
Follow tagged brass stock through Citizen R04VI machining, part collection and optical measurement. The photographs show the production route for small connector contacts.
- Material identification at the bar rack
- Bar-fed machining after first-part verification
- Part collection and non-contact inspection
Building a fiber optic instrument? Combine small turned parts with custom connector hardware, optical housings and optomechanical parts in one drawing-based RFQ.
Materials for Swiss machined parts
Start with the specified grade and material condition. These grade examples are reviewed against the part, available bar stock and required final properties during quotation.
| Material | Grade examples for review | What to specify |
|---|---|---|
| Stainless steel | 303 · 304 · 316 · 17-4PH · SUS420J2 | Specify grade, material condition and any final hardness or passivation requirements. |
| Brass | C36000 · C3604 | Include plating, conductivity and any restrictions on material composition or substitution. |
| Carbon & alloy steel | 1215 · 12L14 · 4140 | State the supply condition, heat treatment and final dimensional requirements. |
| Copper alloys | C1100 · C14500 · phosphor bronze | Specify the exact grade, electrical requirements and finish. |
Aluminum, titanium & engineering plastics
| Material | Grade examples for review | What to specify |
|---|---|---|
| Aluminum | 2011 · 6061 · 7075 | Specify material condition and anodized or other finished-surface requirements. |
| Titanium | Grade 2 · Grade 5 | Include the material standard, feature dimensions and inspection requirements for feasibility review. |
| Engineering plastics | POM · PEEK · PTFE | State the grade, dimensional requirements and any restrictions on deformation or surface marks. |
Dimensions after finishing
Identify fits and surfaces that must meet the drawing after plating, heat treatment or other finishing. Include coating thickness, masking, surface roughness and burr requirements.
Surface finishing optionsCertificates & traceability
Specify the material standard, certificate type and any restrictions on substitutions. The documentation scope is agreed with your order.
Material certificates & traceabilityInspection of small turned parts
Critical dimensions, edge condition and handling matter at this scale. The inspection method and report scope are agreed around the drawing and finished-part requirements.
First-part verification
The first piece from a new setup is checked against the drawing before batch production. Critical dimensions and the inspection method are established at this stage.
Dimensions, burrs & handling
In-process checks watch for dimensional drift, tool wear, burrs and handling damage. Small profiles can be measured on KEYENCE optical systems without a contact probe touching the feature.
Final checks & reports
Finished parts are checked against the agreed requirements. Specify which dimensions need recorded values, the report format and any material certificates when requesting a quote.
Quality assurance at OUJI
A micro-turned part being measured on the OUJI shop floor.
Sample orders from 100 pieces
Drawing review for Swiss machined parts
Share your drawing and the quantity you need. We will review the machining route, critical features and inspection requirements for quotation.
Discuss your project firstPart files & critical features
A dimensioned PDF or DWG drawing and a STEP model if available. Include the current revision, threads, datums, fits and burr requirements.
Quantity & finished-part requirements
Sample orders start at 100 pieces. Include your required sample quantity, expected production quantities, material, finish and target delivery date.
Inspection & confidentiality
List required reports and material certificates. If you need an NDA before sharing files, contact us to arrange the review first.
What happens after your enquiry?
OUJI checks the drawing, material and quantity, identifies any information needed, and confirms the quotation scope and delivery schedule. Files can also be supplied later by email.
Questions about Swiss machining
Sample quantities, part sizes, tolerances and the information needed for your enquiry.The minimum sample order for Swiss-type and micro machining is 100 pieces. Single-piece sample orders are not available for this service.