CNC Turned Parts

CNC Turned Parts, Round Parts Held to One Axis

Turning covers the parts that are round: shafts, bushings, collars, spindles, rings, brass fittings and spherical seats. They come off bar stock on CNC lathes, with flats, slots and cross-holes milled in the same setup on a turning-milling compound machine, and every batch ships with a dimensional inspection record.

Three Sub-Families

Turned Parts Break Down Into Three Groups

All three are turned parts — in shop terms, rotational parts: diameters, shoulders, grooves, threads and bores that have to stay concentric to each other. Open a group to see representative parts and what we need to quote.

How We Turn Them

Turning, and Milling in the Same Setup

Turning is the process for rotational parts, the group often called screw machine parts in older buying lists. We turn on CNC lathes and turning-milling compound machines, holding diameter, thread and bore concentricity to ±0.005 mm where the drawing asks for it, then measure every batch before it ships.

Turning to one centreline

Stepped diameters, shoulders, grooves, tapers, threads and bores, cut so the bore and the diameter that locates it stay concentric — the dimension that decides whether the part seats.

Mill-turn in one setup

Flats, slots, cross-holes and wrench features milled on the same turning-milling machine, so their position stays tied to the turned axis instead of being re-datumed in a second fixture.

Finishing on request

Anodising (types II and III), zinc and nickel plating, passivation, polishing and blackening, applied to your drawing's specification.

Materials

Turned From the Metals and Plastics Your Drawing Calls For

Typical grades below. Tell us the grade you need and we confirm availability with the quote.

Metals

  • Aluminium (6061, 7075, 5052)
  • Stainless steel (303, 304, 316)
  • Carbon steel (1018, 1045)
  • Brass (C360) and copper

Plastics

  • POM (Delrin / acetal)
  • PEEK
  • Nylon (PA6, PA66)
  • PTFE, PC, acrylic

Finishing

  • Anodising and hard anodising
  • Zinc / nickel plating
  • Passivation, black oxide
  • Polishing and sandblasting

Send a Drawing, Get a Turned-Part Quote

STEP, IGES, PDF, DWG, DXF or a photo — up to 20 MB per file. We reply within 24 hours with price, lead time and manufacturability notes.

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