CNC Turning — How It Works, What Parts and Tolerances

June 6, 2026

Turning is one of the oldest metalworking methods — but in its CNC form it became a process repeatable to within a micrometre. If you need shafts, sleeves, flanges or threaded parts in steel, aluminium or brass, CNC turning is most likely the answer. We explain how it works, what parts it produces and what tolerances you can expect.

What CNC turning is

In turning, the workpiece rotates while the turning tool removes stock, giving the part a rotational shape. “CNC” means the tool movements are controlled by a computer following a program — so every next part in a batch is identical. In our machine park we turn parts in a diameter range from 15 to 750 mm.

What parts are made by turning

  • shafts, axles, pins, spindles
  • sleeves, rings, flanges
  • threaded components
  • housings and machine parts with rotational symmetry
  • spare parts and prototypes

Tolerances and accuracy

For typical turned parts we talk about tolerances in the hundredths of a millimetre, and for precision components — single micrometres. Quality control is carried out on measuring equipment with an accuracy of 0.5 µm.

Frequently asked questions (FAQ)

What accuracy does CNC turning achieve?
For typical parts — hundredths of a millimetre; for precision parts — single micrometres.

What materials do you turn?
Steel and stainless steel, aluminium, brass, copper, bronze and engineering plastics.

Need CNC-turned parts? Send an enquiry or see our CNC turning offer.

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CNC turning, CNC milling, drilling, tapping, saw cutting, abrasive machining and assembly.
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ul. Olszynki Grochowej 24
70-790 Szczecin, Poland