CNC Turning Services

China high-quality precision CNC turning services you can trust. Competitive pricing and fast lead times.

Timely quotes and free DFM evaluation
Tolerance level can be 0.005mm
The diameter of the machined parts is D1mm~D500mm

Precision CNC Turning Services From China

Are you looking for a reliable, quick-turn supplier of CNC-turned parts?

Precionn is a leading manufacturer of CNC turning parts, renowned for its superior quality and flexible production methods. With over 20 years of turning experience, we can machine plastics, common metals, and stainless steel, with a particular focus on specialty alloys such as Inconel, Hastelloy, and Stellite.

Our advanced CNC turning centers and lathes, combined with a variety of finishing solutions, make us the ideal choice for your precision manufacturing needs, from prototyping to mass production.

Why order turning parts from Precionn?

Full-size processing capability

We can process products with diameters ranging from D1mm to D500mm and lengths up to 6m+, meeting the parts needs of various industries.

A Wide Variety of Materials

We offer machining services for over 80 materials and have extensive experience in machining various materials, especially specialty alloys.such as inconel,hastelloy and stellite.

High Accuracy

The dimensional accuracy of our processed products can be guaranteed to be +/-0.005mm, the geometric tolerance to be guaranteed to be within 0.01mm, and the surface roughness to be guaranteed to be Ra0.2~Ra1.6.

High-quality surface treatment

For CNC turned parts, we can provide more than 10+ surface treatment processes, including: PVD coating, DLC coating, anodizing, plating, painting, powder coating, polishing, and more.

What is CNC Turning?

The CNC turning process involves excess debris being chipped away while the workpiece is rotating (continuously rotating) until the desired shape, diameter and size of the final product is reached. This processing method is not only suitable for cutting hard materials such as metal, but also suitable for soft materials such as wood and plastic. Because CNC turning uses computer-controlled programs and codes to operate, it can efficiently complete a variety of cutting tasks, especially in solving aerospace parts and other varieties, small batches, complex shapes, high precision problems, CNC turning has become an effective way to achieve high efficiency and automatic processing.

Metal CNC Turning

Aluminum

Aluminum is light but strong, with excellent machinability and corrosion resistance. The processed products are beautiful in shape and have a wealth of post-treatment options, which can be sandblasted anodizing, painting, electroplating and other treatments. Due to its excellent material properties, it is widely used in aerospace, automotive, consumer products, automation equipment industries

Common alloy:Aluminium 1100、Aluminum 3103,Aluminum 2024,Aluminum 5052,Aluminum 5083,Aluminum 6061, 6061-T6,Aluminum 6063, 6063-T6,Aluminum 6082,Aluminum 7075, 7075-T6,Aluminum ADC12 (A380)

Brass

Brass material has excellent corrosion resistance, excellent machining performance, good stability and electrical conductivity, so its use is very wide, can make faucets, water pipes and other bathroom hardware; It can make Musical Instruments, precision measuring tools, optical instruments, in addition, brass has a wide range of applications in construction, mechanical manufacturing, electronics, automotive fields.

Common alloy:CuZn5, CuZn10, CuZn20, CuZn35, CuZn35Pb1, CuZn36Pb3, CuZn39Pb1

Copper

Copper, also known as red copper, has good electrical and thermal conductivity, excellent plasticity, and is easy to hot press and cold pressure processing. Mainly used in the power industry of cables, transformers, switches, plug components and connectors, motor manufacturing such as stator, rotor, shaft head and hollow wire, electronics industry in the high-frequency transmitter tube, as well as integrated circuit industry.

Common alloy:Copper C101 (T2),Copper C103 (T1),Copper C103 (TU2),Copper C110 (TU0)

Steel

The characteristics of steel mainly include high strength, light weight, good overall rigidity and deformation capacity, excellent plasticity and toughness, able to withstand dynamic loads well, and poor fire resistance and corrosion resistance. Widely used in construction industry, automotive industry, shipbuilding industry, energy industry, machinery manufacturing industry. According to the different material quality, steel can be divided into:
Low carbon steel, medium carbon steel, high carbon steel, low alloy steel, medium alloy steel, high alloy steel.

Stainless steel

Stainless steel materials have excellent corrosion resistance, which makes them work continuously in acid and alkali environments. In addition, it has good heat resistance, high strength, environmental protection materials. Therefore, it is widely used in construction, automobile, medical equipment, food processing and other fields.

Stainless Steel SUS201,Stainless Steel SUS303,Stainless Steel SUS 304,Stainless Steel SUS316,Stainless Steel SUS316L,Stainless Steel SUS420,Stainless Steel SUS430,Stainless Steel SUS431,Stainless Steel SUS440C,Stainless Steel SUS630/17-4PH,Stainless Steel AISI 304

Inconel is a high-performance alloy ideally suited for high-temperature and harsh environments, with a wide range of industrial applications. Due to its high hardness and strength, the selection of cutting tools for lathe machining is crucial. Its high-temperature resistance and corrosion resistance make it important in aerospace, energy, chemical, and other fields.

Common grades include Inconel 600, Inconel 625, and Inconel 718.

Plastic CNC Turning

ABS

ABS resin is currently the largest production, the most widely used polymer, the appearance of opaque ivory grain, and has a high gloss. Easy processing, smooth surface, thermal stability, geometric stability, good impact resistance, good insulation, acid and alkali resistance, low creep, high hardness, good rigidity, low price, poor weather resistance, thermal performance is not good enough, general fluidity, small shrinkage,

The largest application areas of ABS resin are automobiles, electronic appliances and building materials. The use of the automotive field includes the instrument panel, the exterior panel of the body, the interior decoration board, the steering wheel, the sound insulation board, the door lock, the bumper, the ventilation pipe and many other components. In electrical appliances are widely used in refrigerators, TV sets, washing machines, air conditioners, computers, copiers and other electronic appliances. In terms of building materials, ABS pipes, ABS sanitary ware and ABS decorative plates are widely used in building materials industry. In addition, ABS is also widely used in packaging, furniture, sports and entertainment supplies, machinery and instrumentation industries.

PE

Polyethylene (PE) is the largest variety of general synthetic resins, mainly including low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE) and some products with special properties. Good acid, alkali and chemical solvent resistance, good fluidity, good insulation, easy to vacuum the surface, low embrittlement temperature (-75 C°), white translucent, easy to environmental stress cracking, good flexibility.

It is widely used in the manufacture of films, packaging materials, containers, pipes, monofilament, wire and cable, daily necessities, etc.

PMMA

High light transmittance, good impact resistance, not easy to break, aging resistance, good weather resistance, low hardness, poor wear resistance, brittle. PMMA products have a very low birefringence, especially suitable for the production of video discs.

PMMA has the advantages of light weight, low price and easy molding. Its forming methods include casting, injection molding, mechanical processing, thermoforming and so on. Especially injection molding, can be mass production, simple process, low cost. Therefore, its application is becoming more and more extensive, at present, it is widely used in instrument parts, automotive lights acrylic rods, optical lenses, transparent pipes and so on.

PP

Rigid, bending resistance, good toughness, fatigue resistance, light weight, still has good mechanical properties at high temperature, good acid and alkali resistance and chemical solvents, good fluidity, good insulation, poor weather resistance, 0C° easy to become brittle, stress cracking resistance.

Automotive industry (mainly using PP containing metal additives: fenders, ventilation pipes, fans, etc.), equipment (dishwasher door liners, dryer ventilation pipes, washing machine frames and covers, refrigerator door liners, etc.), consumer goods (lawn and garden equipment such as lawn mowers and water sprinklers, etc.)

PC

Good impact resistance, good insulation, geometric stability, good heat resistance, low embrittlement temperature (-130 C°), good weather resistance, low creep, high transparency, good mechanical properties, poor solvent resistance, stress cracking phenomenon, poor fatigue resistance, poor fluidity, small shrinkage, easy hydrolysis in boiling water, good gloss, large friction coefficient.

The application and development of polycarbonate is to develop in the direction of high composite, high function, specialization and serialization, and has launched a variety of optical discs, automobiles, office equipment, boxes, packaging, medicine, lighting, film and so on.

PTFE

Polytetrafluoroethylene [PTFE,] is one of the best corrosion resistance materials in the world today, so it has the reputation of "plastic king". It can be used in any kind of chemical medium for a long time, polytetrafluoroethylene seals, gaskets, gaskets. Polytetrafluoroethylene seals, gaskets, sealing gaskets are made of suspended polymer polytetrafluoroethylene resin molding. Compared with other plastics, polytetrafluoroethylene has excellent chemical corrosion resistance and temperature resistance, and it has been widely used as sealing materials and filling materials.

PA (Nylon)

PA has good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and low friction coefficient, a certain flame retardant, easy to process, suitable for reinforced modification with glass fiber and other fillers, improve performance and expand the scope of application.

This kind of product is widely used, it is a good material for plastic replacement of steel, iron, copper and other metals, and is an important engineering plastic.

PEEK

Peek material is a kind of high performance engineering plastic, which has the characteristics of high temperature resistance, chemical stability, good mechanical properties and biocompatibility. It can manufacture and process various mechanical parts, such as automobile gear, oil screen, shift starting disk, aircraft engine parts, automatic washing machine runner, medical equipment parts, etc., which are applied in aerospace, automobile manufacturing, electronic and electrical, medical and food processing fields.

POM

POM material has low strength, but good thermal stability, is not easy to decompose, has a wide processing temperature range (about 50 ° C), and has good stability to acid and base. It is an engineering plastic with excellent comprehensive properties. It has good physical, mechanical and chemical properties, especially excellent friction resistance. Commonly known as steel or steel, it is the third largest general engineering plastic. Suitable for the production of wear resistant parts, transmission parts, and chemical, instrumentation and other parts.

How to ensure high precision in CNC Turning?

Internal grinding

Internal grinding plays a crucial role as an auxiliary process to ensure precision after turning. It is widely used in machining and can handle various shapes of holes on machine parts, such as through holes, blind holes, and stepped holes. Its dimensional accuracy can typically reach the tolerance grade IT6-IT7. With the aid of high-precision grinding processes, the dimensional accuracy can be controlled within 0.005mm.

Cylindrical grinding

Cylindrical grinding is a core precision process for machining shafts and cylindrical parts. It achieves high-precision dimensions and low surface roughness on the workpiece’s outer diameter through high-speed rotating grinding wheel cutting.

• Improved Precision: Controls dimensional tolerances (up to IT5-IT7 grade), roundness, and cylindricity; surface roughness Ra 0.01μm~0.8μm. Dimensional accuracy can reach 0.001mm.

1. Ordinary Cylindrical Grinding: Machining simple cylindrical surfaces, suitable for batch production of conventional parts, with an accuracy of 0.01mm.

2. End Face Cylindrical Grinding: Simultaneously machining the outer diameter and end face, suitable for shafts with steps.

3. Centerless Cylindrical Grinding: Workpiece has no center support, extremely high efficiency, suitable for slender shafts and large batch production of small parts (such as bolts).

Applications Of CNC Turning

shaft

Shaft components are found throughout almost the entire machinery manufacturing industry, primarily in the following sectors:

flanges

Petroleum and chemical industry: Numerous pressure vessels and valves require flange connections.
Oil and gas transportation industry: Pipelines and drilling equipment.
Power industry: Condensers and boilers require flanges.
Machinery and equipment manufacturing industry: Hydraulic systems, gearboxes, and pump bodies.
Shipbuilding and marine engineering industry: Flanges made primarily of corrosion-resistant materials, such as Hastelloy, Inconel 600, Inconel 625, Monel 400, and Monel K500, etc., which are highly corrosion-resistant.

ejector pin

Ejector pins are crucial components in molds used to eject finished products. They are widely used in:

Rollers

Rollers are rotating components widely used in various mechanical equipment, typically serving as bearings, force transmitters, and drivers for material conveying and pressing.

Main applications: Logistics and transportation industry, packaging industry, steel and aluminum alloy rolling, food assembly industry, pharmaceutical manufacturing industry.

Advantages of CNC Turning

Excellent ability to machine cylindrical parts

Lathes are the preferred equipment for machining rotating parts, easily processing:

Shafts (drive shafts, rollers, spindles)

Sleeves (bulbs, flanges)

Discs

Spherical parts, conical parts

High machining efficiency and stable precision make them difficult to replace with other machining methods.

High machining precision and good surface quality

Modern CNC lathes can achieve:

Dimensional accuracy: IT6～IT7

High roundness and coaxiality

Surface roughness can reach Ra 0.8–0.4 μm (finish turning)

Suitable for precision shafts, bearing sleeves, hydraulic parts, etc.

High processing efficiency

Simple tool movement (mainly X/Z axes)

Stable cutting

Short cycle time

High degree of automation (feeder, robot)

Very suitable for mass production of a large number of repetitive parts.

Workpiece clamping is simple and stable

Uniform rotational torque; easy to use with three-jaw chucks, four-jaw chucks, and hydraulic chucks;
Suitable for:

Long shafts

Heavy-duty parts

Precision parts

Compared to milling machines, turning and clamping are easier.

CNC Turning FAQs

What brands of CNC lathe machining equipment do you have?

We have high-precision CNC lathes from Mazak, Hardinge, and other manufacturers, which can meet the machining needs of high-precision products.

What is the diameter range of the products you machine?

Our common horizontal CNC turning can machine diameters from D1mm to D800mm, while our vertical CNC lathes can machine diameters from D800mm to D3500mm.

What is the length range of parts that your CNC turning can machine?

Our CNC turning can machine parts with lengths ranging from 1mm to 6000mm+.

What is the machining accuracy of your CNC turning?

Our CNC turning precision can be guaranteed to be within 0.005mm.

What is the range of surface roughness you can achieve for the products you CNC turning?

The surface roughness of the products we machine can reach between Ra0.2 and Ra1.6.

What materials can your CNC turning process?

Our CNC turning can machine aluminum alloys, stainless steel, carbon steel, and specialty alloys such as inconel, hastelloy, and stellite. We also process over 80 types of plastic materials, including peek, POM, PEI, PC, HDPE, and nylon.