CNC Turning
From Ø 2 mm Swiss pins
From Ø 2 mm Swiss pins
to Ø 450 mm shafts.
10 Doosan/Okuma CNC lathes plus 4 Citizen Swiss-type lathes at our Shenzhen facility. Live tooling for mill-turn work. Tolerance to ±0.005 mm on Swiss. MOQ = 1, production runs up to 100,000.
01 · Lathe types
Two lathe families. Different sweet spots.
Conventional CNC Lathes
Machines10× Doosan Puma 2600 / Okuma LB3000
Max swingØ 450 mm
Max length1,500 mm between centers
Accuracy±0.015 mm
Live toolingYes (mill-turn)
For medium to large turned parts — flanges, hydraulic cylinders, pulley hubs, shafts, housings. Capable of through-bored parts and large-diameter threading.
Typical parts:
ShaftsFlangesHousingsPulleysHydraulic
Swiss-Type Lathes
Machines4× Citizen L20 / L32
Max diameterØ 32 mm
Max length320 mm single pass
Accuracy±0.005 mm
Live toolingYes (8-axis complete)
Small precision parts with long slender features. The guide bushing supports the workpiece millimeters from the cutter, eliminating deflection that plagues conventional lathes on long thin parts.
Typical parts:
Medical pinsConnectorsWatch partsScrewsMiniature
FAQ
Turning questions.
Conventional CNC lathes hold the workpiece in a chuck and the tool moves in X-Z. Best for parts Ø 20–450 mm with moderate length-to-diameter ratios. Swiss-type lathes feed the bar stock through a sliding headstock and guide bushing, supporting the part very close to the cutter — ideal for Ø 2–32 mm parts with long slender features, where deflection would be a problem on a conventional lathe.
On our Citizen L20 Swiss lathes, minimum diameter is about 2 mm. We regularly produce medical pins, watch components, connector pins, and miniature shafts down to Ø 2.5 mm with tolerances of ±0.005 mm.
Yes. Our Doosan Puma and Citizen Swiss lathes have live tooling for cross-drilling, milling, threading and engraving. Mill-turn reduces setups on complex turned parts that also need flats, hex features, or off-axis holes.
Yes. Standard concentricity on turned features is 0.02 mm TIR. Precision concentricity to 0.005 mm TIR is achievable with a single setup and matched tooling. For critical shaft applications (spindles, precision pumps), between-centers grinding can achieve 0.002 mm TIR.
Yes — all common threading: ISO metric, UNC/UNF, tapered NPT/BSPT pipe threads, ACME power threads. Internal (threaded holes), external (threaded studs/bolts), and tapered threads to ANSI or DIN standards. Thread quality classes 6g/6H standard, tighter classes on request.
Top 10 turning materials at CIFProto: free-machining aluminum 6061, stainless 303, stainless 304, mild steel 1018, alloy steel 4140, titanium Grade 5, brass C360 (free-cutting), copper C110, Delrin (POM), PEEK. Brass C360 is the fastest-turning material in our shop — 3× faster than stainless.