Classified by processing method:
Automatic lathe parts: Processed by automatic lathes, with a maximum machining diameter of 20mm and maximum machining length of 90mm. Suitable for small parts, featuring high production rates and low cost, with precision up to ±0.01mm.
CNC lathe parts: Processed on CNC lathes, with a maximum machining diameter of 60mm and maximum length of 300mm. Suitable for large-sized, complex-shaped parts, achieving precision up to ±0.002mm. Particularly effective for difficult-to-machine materials like stainless steel, though processing costs are relatively higher.
Instrument lathe parts: Ideal for small-batch, multi-variety part production, offering precision and efficiency between automatic lathes and CNC lathes.

Classified by Part Type:
Shaft Parts: Such as drive shafts and plain shafts, typical symmetrical components formed through turning processes like external cylindrical and end face machining.
Disc and Sleeve Parts: Such as flanges and gear blanks, also symmetrical components formed through turning processes like external cylindrical and internal bore machining.
Threaded parts: Examples include screws, formed through thread turning processes.
Other types: These encompass bushings, pins, knurled parts, stepped shafts, tapered components, ring-shaped parts, and workpieces with formed rotary surfaces.