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Precision Craftsmanship: Exploring CNC Turning for Custom Parts

Discover the precision and versatility of CNC turning services in crafting custom cylindrical components. This article delves into the types of parts suited for CNC turning, the benefits of this technology, and how it supports various industries with high-quality, tailor-made solutions.

Understanding CNC Turning Service

The CNC turning service is best suited if you are looking forward to creating custom parts that are round or cylindrical shaped. The ability of CNC turning machines to perform cuts with extreme precision and high quality makes them suitable for industrial graded products.

You can also use the CNC turning services for different types of cuts. For example, you can perform drilling operations with the turning services to reach the desired outline for your designed part. If you want to perform boring cuts where you need to enlarge the diameter of a previously built hole, the lathes are suitable for such operations.

The indexable threading inserts are attached with lathes to make threading cuts. Overall, you can use the CNC turning services to get various types of jobs done.

You can watch this video to know more about turning services.

Types of Products Suitable for CNC Turning Processing

CNC turning, also known as Computer Numerical Control Turning is a machining process that has carved the niche of creating cylindrical parts. It does so by turning a workpiece and removing material with the tool. The approach can be applied to a wide range of materials but its applicability is based on material characteristics, complexity and tolerance. It works its way into the precise production of components that require high dimensional accuracy, such as shafts and axles or bushings and bearings. All kinds of connectors, couplings and fasteners hydraulic components pneumatic components pulleys gears all gain from the precision and accuracy that CNC turning gives.CNC turning

CNC turning also does very well in the Medical sector, where it manufactures surgical equipment, implants and dental prosthetics. It is essential in aerospace for the manufacture of engine parts and landing gear units. In the automotive industry, it is used for drive shafts, brake cylinders and suspension parts. CNC turning is used by precision electronic connectors and components for tight tolerances as well as reliability. In addition, it eases rapid prototyping and small-batch manufacturing as a result of its adaptability and ability to generate complex geometries. This efficient and accurate method also addresses specific custom components that meet particular needs in various industries, thus making CNC turning a vital tool for the manufacturing of cylindrical parts.

Metals You Can Choose for CNC Turning Services

The CNC turning operations are suitable for almost all kinds of metals. Some of the common metals are listed below. Some material properties are included for your help so that you can choose the suitable material for your CNC turning service. The common materials among metals are:
Different alloys of aluminum are suitable for CNC turning services.
Stainless Steel:
Different alloys of stainless steel are suitable for CNC turning services.
Mild Steel:
Alloy Steel:
  • Brass alloy C36000

Order Plastics For CNC Turning Services

You can also order CNC turning services for plastic components. The common materials among plastics are:  CNC Turning Service For Plastic Custom Part

Benefits of Choosing CNC Turning Services

The demand for CNC turning services is increasing day by day due to its numerous benefits. You should choose CNC turning services for the following reasons:
  • Precision and accuracy:
The CNC turning services can provide high-precision products with very low tolerance levels. Most of the CNC turning service providers can perform cuts with a tolerance level of ±0.01 mm. With high accuracy, you can use your custom parts for critical components. Precision Capability With CNC Turning Service
  • High efficiency for cylindrical parts with repeatability:
CNC turning services are very efficient for working on cylindrical custom parts. Moreover, since all the works are done through computer-guided machines, each process is repeatable into multiple processes. So, the CNC turning services can provide you with fast order processing.
  • Types of processes:
You can opt for CNC turning services for a wide range of cutting processes. The CNC turning service providers are well-equipped with various machines, including CNC lathe, thread rolling machine, tapping drilling machine, etc. So, a single CNC turning service provider can be your one-stop solution for getting turning operations with cutting, boring, threading, milling, drilling, grinding. As a result, you don’t have to go to individual service providers for every job.
  • Cost efficiency:
CNC turning processes are very low-cost compared to many other processes like laser cuts, plasma cuts, etc. This enables you to get your custom part done within a low and cost-effective solution. Moreover, with a large number of orders, you can get a very good deal for a very low price per unit.
  • High-quality process:
The quality of the material doesn’t get affected after a CNC turning process. So, with the CNC turning services, you can make your custom parts done with industrial graded quality and reliably use them for any purpose. You can also rely on CNC turning services to get your custom parts done involving complex designs and patterns.
  • Order Variation
If you are looking into a custom part for a prototype, you need to order low order quantities. Many CNC turning service providers will offer you very low MOQ (minimum order quantity) for your efficient trade. Moreover, before ordering many products, you can request a sample to inspect whether you are satisfied with the product and then place a final order. This protects you from making a bad investment.
  • The versatility of material choice:
The CNC turning machines can work on almost any kind of product. So, the service providers can also offer a wide range of material choices from where you can choose the best material that suits your target. You can also perform different surface finishing on a CNC-turned custom part to get the desired quality of surface finishing from the CNC turning services.HDC CNC turning service

Working Principle of CNC Turning

CNC turning is a specific type of CNC machining in which the working piece is rotated, and a mechanical cutter does the cutting process. A computer-controlled sequence controls the complete movement of the cutter and the working piece. That’s why the process is termed CNC or computer numerical control.

You have to remember that you can only create a custom part with cylindrical, conical, or round shapes for CNC turning works. The first workpiece on which you want to perform the CNC turning doesn’t necessarily need to be cylindrical shaped. For that, you can choose a cubic or hexagonal shape as well.

The working material is attached with a chuck at one side. Then following a specific sequence, the piece is rotated at a very high speed. On the other side, the robotic arm of the machine will hold the cutting blade.

You need to input the motion instructions to the controlling software to reach your target design. The CNC machine will follow these specific sequences of motion to guide the cutter blade and cut the working piece.

Working Procedure For CNC Turning

You can watch this video to learn how the CNC turning works.

Surface Finishing You Can Get Through CNC Turning Services

The CNC turning services can offer you different types of surface finishes and coatings. Some of them include:
  • As machined:
If you don’t request additional surface finishing after the CNC turning is completed for your custom part, you will get the surface finishing as expected within a range. 
  • Bead blast:
The bead-blasted finishing mainly provides a change in appearance for the final product. To get the bead-blasted finishing, the manufacturers apply very small particles or beads of glass to your custom part’s surface. When they are applied at extremely high pressure, a light texture is created on the surface. So, the bead-blasted part gets a matte-textured surface.
  • Polished surface:
Manufacturers either use manual methods with hand polishing or automated machine techniques for polished surface finishing. The automated polished surface is better to give a barrel finish to your product using centrifugal force. With this method, you can expect a uniform and high-quality surface finishing.
  • Black oxide surface finishing:
In the black oxide surface, the finishing process is achieved mainly through a chemical reaction. With this process, an extra layer is added to the exterior surface to protect the custom part and make it durable. The color of the layer turns black due to the process. figure 1 what is turning in machining
  • Powder-coated finish:
Powder-coated finishing surfaces are available in different colors and are highly effective due to their higher resistance to impact. Due to the powder-coated finishing, your custom part becomes resistant to wear. Moreover, these materials get more resistant to corrosion, which makes them highly durable.
  • Anodized type II and type III surface finishing:
Manufacturers use a clear or colorful ceramic layer to coat the external surface finishing through anodization type II finishing. This makes the material extremely resistant to corrosion. One of the limitations of this method is that you can perform them only on aluminum and titanium metals due to the involved method. Another variation is Hard coating anodized type III surface finishing. All the features with anodized types II and III are the same, except for the quality of the coating. In type III, the layer is much thicker and can provide better protection against wear and corrosion.
  • Plating
Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is the process of using electrolysis to attach a layer of the metal film to the surface of metal or other materials to prevent metal oxidation ( Such as rust), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulfate, etc.), and enhance aesthetics.

CNC Turning Can Be Used for Both Small and Large Production Runs

CNC turning is an effective method of manufacture that can be used for both small-batch and high output volumes. As rapid prototyping is costly due to the huge amount of time required and it does not offer customization, CNC turning has an advantage because in smaller quantities produced developer benefits from fast development as well as individual component minimizes space. The flexibility is also more expansive due to the fact that it can handle various part geometries and materials, which makes this tool very convenient for most small-scale projects.HDC CNC turning service

However, for high-volume production and applications in industries where standardization is important such as automotive industry CNC turning has very low tolerance levels which have significantly contributed to the need of uniformity. While it takes an initial setup cost, nevertheless; its capacity to save money and labor requirements reduce the overall costs. However, as CNC machines are able to work intermittently with short downtimes large production volumes enjoy much shorter lead times and therefore strict quality control could be maintained. In conclusion, CNC turning is a versatile and adaptable operation that suits both small-scale production and large scale production with the essential accuracy in machining to achieve efficiency.

Differences Between CNC Milling And CNC Turning Services

The two processes act from two different perspectives for different application scopes. The differences are highlighted below:

The first difference is in terms of process. In the CNC milling operation, the cutting is performed by keeping the workpiece stable in a fixed position. Simultaneously, the computer-guided mechanism rotates the cutting tool and changes its position to perform the cut. On the other hand, in CNC turning operations, the cutting is performed by rotating the workpiece in a fixed position.

Another difference is in terms of cutting technique. For CNC turning techniques, the cutting tool typically has one point that performs cutting operations at a time. This single point is touched with the surface of the rotational workpiece, which results in the cutting or removal of material.

The cutting tool used in the CNC milling process has multiple points that are involved in the cutting process at a time. All the required cutting edges of the rotating cutting blade make contact with the workpiece to perform the cutting operation. Due to the process involved, the CNC turning service is limited to the final shape of the product.

CNC Milling Process Vs CNC Turning Process

Since the workpiece remains in constant rotation, with CNC turning service, you can only create round or cylindrical-based objects. On the other hand, the shape of the final product is unlimited with the CNC milling process. Since you keep the workpiece stationary and position the rotary cutting tools to cut, you can get any form of the final shape.

In the CNC turning process, the computer guides the cutting tool to maintain continuous contact with the surface of the working piece where you want to perform the cutting process. With the CNC milling process, the cutting tool doesn’t maintain similar contact.

The cutting head is involved for a small cut and then taken out and repositioned for a different cut or cuts in a different area. Due to differences in cutting features, mostly continuous chips of waste are produced during the CNC turning process. On the other hand, in CNC milling operations, discontinuous chips are produced.

Tolerance Standards You Can Expect From CNC Turning Services

Referring to international tolerance levels, if you are ordering rough turning processes, you can expect tolerance grades from IT6 to IT8. But if you order finished turning processes, you can expect a tolerance grade up to IT4 levels. Here is a detailed list of general tolerance standards:
  • Most of the CNC turning services can maintain a tolerance level of ±0.01 mm for all products.
  • For the circumference of a cylinder, the tolerance level is ±0.01 mm for a nominal size of 100 mm.
  • For flatness at the end face, the tolerance level is ±0.02 mm for a nominal size of 200 mm.
  • Accuracy for thread pitch, the tolerance is ±0.06 mm for a nominal size of 300 mm.
  • Surface roughness without additional finishing to about Ra 0.8.
  • For the accuracy of an outer circle, tolerance is 0.005 mm to 0.01 mm

Quality Control Productions For CNC Turning Services

The CNC turning services always follow some guidelines and regulations to perform the quality control productions. The common ones are:
  • Standard design input:
One of the main parts of any CNC turning process is the design input. Since the turning machines are controlled through a computer, you must input a standard design to ensure that you can convey the complete instruction in the best way. If there is an error in design terms, the production will halt and might affect the quality. So, the CNC turning service providers always ensure to check the design from customers before input to the computer. Normally the STEP and IGES are standard file formats that can be used across common platforms. After checking the customer’s submitted file, the manufacturers will change the file format if necessary or amend any errors to ensure the quality control of the production. Standard File Formats For CNC Turning
  • Healthy coordination with customers:
Maintaining healthy coordination with the customer helps to achieve the product quality that customers will appreciate. There may be unforeseen factors on some minor details missing during the order. With good communication and coordination, the CNC service providers resolve these factors to leave any uncertainties. This way, the customer will also know the update and details of his production. This leads to increased customer satisfaction.
  • Legal and standard specifications:
Following standard specifications for machine operation and production procedures always help achieve the best outcome. The CNC turning manufacturers always ensure to follow the standard specification following legal standards and regulations for all kinds of products.
  • Raw material quality inspection:
In CNC turning services, the customer chooses the type of material, and the service provider delivers the material with design. It is an important factor that the same material is available with different grades in the market. To maintain quality control in productions, the service providers use the best-grade material available.
  • Experienced and skilled workforce:
The CNC turning processes are mostly controlled through computer-aided machines. But the manual operators and other workforce is a critical factor in setting different parameters and performing important operations at various stages of production. For quality-controlled productions, the service providers ensure that they keep an experienced and skilled workforce for the optimum maintenance of every aspect.
  • Updated and hi-tech production line:
The CNC machines play the most important role in CNC turning processes. The service providers always prioritize keeping themselves updated with the latest technology. This is beneficial for them to gain increased efficiency and ensure quality control in the production line.
  • In-process QC inspection:
Today, the best and the most reliable CNC turning service providers rely not only on their general workforce for quality assurance. To further advance in quality control, they involve a separate team or individual to ensure everything is running smoothly and as directed during the production.
  • Post-process final QC inspection:
How much you maintain the different aspects of a production line, the most important step always comes down to the quality of the final product. The service providers perform a complete product check following a checklist to ensure that every aspect is satisfied. In case of any issue, they discard faulty products to ensure only the best product reaches the customer’s hand.

Difference Between Rough CNC Turning And Finish CNC Turning

A complete CNC turning process is divided into two steps. The first step is the rough CNC turning, and the second is the finished CNC turning. Here are some of the differences highlighted for you to understand.OEM Custom Cnc Turning Parts

Difference inRough CNC turning Finish CNC turning

Purpose of operation

Every turning process is started by rough CNC turning on the raw material. The purpose of rough CNC turning is to remove a bulk amount of material from the workpiece to give it a shape closer to the final geometry of the designed part.The purpose of finish CNC turning is to convert the roughened part to the final shape.

Starting piece

The rough turning operation is performed on the first raw material.The finish turning operation is performed on the roughed part.
Finishing pieceThrough rough CNC turning, you can get a roughened part.Through finish CNC turning, you can get the finished final output.

Feed rate

The feed rate is higher in rough CNC turning.The feed rate is slower in finish CNC turning

Cut depth

Each cut depth is higher in rough CNC turning.Low cut depth is applied in finish CNC turning.

Material removal rate

More material is removed per unit time in the rough CNC turning.Less material is removed per unit time in the finish CNC turning.

Surface finish

The CNC rough turning ends with a rough surface finishing.The CNC finish turning ends with a smooth surface finishing.

Dimensional accuracy and tolerance

Low dimensional accuracy and tolerance level are maintained in rough CNC turning.High dimensional accuracy and tolerance level are maintained in rough CNC turning.

Cutting tool

Cutting tools with negative rake inserts are used in rough CNC turning to get more cutting speed.Cutting tools with positive rake inserts are used in finish CNC turning to ignore the speed and improve finishing quality.

Rough CNC Turning (1) Vs Finish CNC Turning (2)

Find The Suitable CNC Turning Service

Finding the right CNC turning service is important to ensure that you are financing for the best output. Here are some of the factors you should consider to find a suitable CNC turning service:
  • Find a CNC turning service that houses the best and updated CNC turning machines to provide their service.
  • Quality control is an important step in CNC turning services. Always choose the service that ensures quality control in their production line.
  • Choose the CNC turning service that can perform a range of capabilities. You don’t want to waste your important time opting for different service providers for different services.
  • Analyze the production time on how quickly the CNC turning services make get your product done.
  • Consider the cost and budget. Choose the manufacturer who can get your product done at efficient costs.
  • Good customer support is important in any service. Choose a manufacturer who maintains good customer support.
  • One of the most beneficial factors is to consider the market reputation of a service provider. If they are good in every aspect of their service, they must have a good reputation.

Guidance for Custom CNC Turning Parts from Manufacturers

Manufacturers should be approached with a clear process when ordering custom CNC turning parts. This will ensure that you get the desired results from manufactures whenever you need their services.
  • Define Requirements: State dimensions, material type, tolerances and the quantity ordered.
  • Research Manufacturers: Search for reliable and reputable CNC turning companies.
  • Request Quotes: Acquire precise cost estimations (RFQ) from several manufacturers.
  • Evaluate Quotes: Compare prices, delivery times, quality and applicability
  • Material Selection: Use a suitable material for your application.
  • Prototyping: Alternatively, you may request a sample part for validation.
  • Quality Assurance: It is therefore necessary to ensure that the manufacturer adheres with quality standards.
  • Lead Time: Develop a production schedule that fits into your timeline.
  • Communication: Keep communication channels open throughout the process.
  • Inspect and Test: The components should be verified upon arrival and tests that are necessary to conduct must also be done.
  • Documentation: All communications and documentation should be recorded.
  • Payment: Meet them halfway on payment terms and stay within those boundaries.
  • Long-Term Relationship: It is possible to suggest a long-term relationship for continuity.
Through these processes and a partnership based on cooperation with the manufacturer, you can be assured that sourcing custom CNC turning parts for your specific needs will yield satisfactory results.Cnc Turning Parts


If you are involved with any kind of engineering-based business, the CNC turning services are an essential part for you. Moreover, the huge availability of CNC turning services with affordable and flexible offers from the service providers are attracting more businesses.

With such high demand and scopes, you can opt for CNC turning services to get your custom parts within a very short time. You should also familiarise yourself with various aspects of CNC turning and CNC turning service opportunities for more efficient trade. Consider important factors while choosing the best CNC turning service to suit your ultimate need.

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