Custom CNC Machining Manufacturer · Precision Metal Parts from Prototype to Production

Precision turning for shafts, sleeves and rotational components

CNC turning removes material from rotating workpieces to produce precise cylindrical components, including shafts, sleeves, bushings, pins and threaded parts. With controlled diameters, concentricity and surface finishes, our turning processes support a wide range of metal component requirements.

From prototypes to repeat production, each project is reviewed for manufacturability before machining. Our engineers evaluate part requirements, material selection and tolerance needs to help optimize production reliability and reduce avoidable rework.

Discuss Your CNC Project

Applications

What components can we turn?

Shafts & Axles

Precision turned shafts and axles with controlled diameters, shoulders, threads and concentric features.

  • Shafts
  • Axles
  • Spindles
  • Drive Shafts

Bushings, Sleeves & Spacers

Cylindrical components with controlled bores, wall thicknesses and mating surfaces for fit and assembly.

  • Bushings
  • Sleeves
  • Spacers
  • Collars

Pins & Threaded Components

Turned pins and threaded parts produced to confirmed diameter, thread and length requirements.

  • Pins
  • Studs
  • Threaded Inserts
  • Fasteners

Why Tongyong

Work with a CNC turning partner built around confidence.

Behind every turned part is an engineering-led team focused on accuracy, repeatability and getting your project right the first time.

01

Expert, engineering-led

You work with engineers who review every drawing for manufacturability and suggest improvements before cutting — not a faceless order queue.

02

Consistent quality, every time

Documented DFM, in-process checks and final inspection mean the 500th part matches the first. Tolerances confirmed against your drawing.

03

One partner, fewer hand-offs

Milling, finishing, inspection and traceability under one roof reduces suppliers, shortens lead time and keeps your part consistent.

Materials Commonly Used

Preview Material Grades Best for
Carbon and alloy steel metal surface texture with brushed finish and metallic shine
Carbon & Alloy Steel 1045 · 4140 · 4340

High strength and hardness for shafts, gears and structural components, with heat treatment or plating as required.

Brass metal surface texture with brushed finish and metallic shine
Brass C360 · C260 · C272

Conductive and decorative, with grades suited to machined connectors, valves and fittings.

Aluminium metal surface texture with brushed finish and metallic shine
Aluminium 6061 · 6063 · 7075 · 5052 · 2024

Lightweight and corrosion-resistant, with grades suited to housings, brackets and structural components.

Stainless Steel
Stainless Steel 303 · 304 · 316 · 17-4PH · 416

Corrosion-resistant, strong and hygienic — for parts that must endure moisture, chemicals or sterilization without losing integrity.

Copper
Copper C101 · C110

High electrical and thermal conductivity for bus bars, electrodes and thermal components.

Titanium
Titanium Grade 2 · Grade 5

High strength-to-weight ratio and corrosion resistance for demanding lightweight components.

Manufacturing Insights

What “tight tolerance” really costs

What “tight tolerance” really costs

Why a single blanket tolerance is the wrong way to spec a part, and how confirming critical dimensions at DFM keeps quality high and cost sensible.

Common questions

CNC turning FAQs

What is the maximum diameter you can turn?

Representative maximum turned diameter is around 400 mm and length up to ~1000 mm. Larger or unusual sizes — send your drawing and we'll confirm feasibility.

General tolerances follow recognized standards; diameters and concentricity are held closely on capable features and confirmed against your drawing at DFM review, then measured and documented.

Yes — with live tooling we add cross-holes, flats, slots and internal/external threads in the same setup, improving accuracy and reducing handling.

Yes — minimum order is one piece. Prototypes are turned from production-grade material so they validate fit, function and finish before you scale.

A 3D model (STEP / IGES) plus a 2D drawing for critical diameters, tolerances and finish. A sketch is enough to start.

Ready to machine your turned parts?

Send your STEP, IGES, or DWG files along with your project requirements. Our engineering team will review your CNC turning requirements, assess manufacturing feasibility, and provide quotation and DFM feedback based on your project.

 

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