CNC Turning Service

CNC turning produces parts by mounting a blank on a rotating chuck and removing material using stationary cutting tools. This technology is ideal for manufacturing parts with symmetry along their center axis. Turned parts are typically produced faster (and at a lower cost) than milled parts.

Take advantage of the on-demand CNC turning service and get reliable metal and plastic turned parts for your unique projects. With advanced technologies and expert technicians.

Scojet produces high-quality custom prototypes and end-use production parts. Our CNC turning capabilities allow us to deliver turned parts with high accuracy, regardless of the complexity. You will get durable parts from flats to radial and axial holes, slots, and grooves as fast as one day.

CNC turning is often used for:

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Our CNC Turning Capabilities

Our basic guidelines for CNC turning include important design considerations to help improve part manufacturability, enhance cosmetic appearance, and reduce overall production time.

Maximum part size for CNC turning

Part size limitationsMetric unitsImperial units
Maximum part diameter431 mm17 in
Maximum part length990 mm39 in
Maximum swing over the carriage350 mm13.7 in
Maximum spindle through-hole40 mm1.5 in
Maximum speed: 1700RPM, Motor power: 640W  

Additional Notes on CNC Turning Guidelines
● Small features may be allowed, but the diameter in any region should not be less than 0.030 in. (0.76mm).
● Sharp conical points are allowed; angles should be greater than 30 degrees. Walls thinner than 0.020 in. (0.5mm) typically do not survive the machining process.

CNC Turning Materials

Materials for CNC Turning

We stock a range of metal materials that are suitable for various part applications and industries. Choose from aluminum, brass, low carbon steel, stainless steel, steel alloy, and titanium for turned parts.

Custom CNC Turning Finishes

Enhance part performance by selecting surface finishes that improve the roughness, hardness, chemical resistance and cosmetic features of the finished component.

Parts that are turned typically have a very smooth surface finish. The as-machined surface finish of the cylindrical areas will typically be much smoother using the lathe than the mill, so consider this when selecting the machining method for those parts that qualify for either method. Areas cut with live tooling, such as flats and slots, may have visible tools marks.
If desired, the metal parts can be lightly bead blasted leaving a fine matte finish. Hard metals like steel and stainless steel can also have edges broken (deburred) with a light bead blast to remove metal slivers, and sharp or rough areas.

CNC turning tolerances

We follow ISO 2768 standards for CNC machining.

Limits for nominal sizePlastics (ISO 2768- m)Metals (ISO 2768- f)
0.5mm* to 3mm±0.1mm±0.05mm
Over 3mm to 6mm±0.1mm±0.05mm
Over 6mm to 30mm±0.2mm±0.1mm
Over 30mm to 120mm±0.3mm±0.15mm
Over 120mm to 400mm±0.5mm±0.2mm
Over 400mm to 1000mm±0.8mm±0.3mm
Over 1000mm to 2000mm±1.2mm±0.5mm
Over 2000mm to 4000mm±2mm 
*Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing.  

Gallery of CNC Turning Parts

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