Turning Inserts
Carbide Insert | Grooving & Parting Blade | For CNC Metal Lathe
CMP-04525TURN-00001
£18.99
Turning Inserts
3 products available
Turning inserts are the replaceable, indexable cutting tips used in lathes and turning centers for shaping metal components. For professional machining operations, selecting the correct insert is fundamental to achieving specified tolerances and surface finishes. Our range is focused on high-performance carbide turning inserts, designed for reliability in common industrial metalworking tasks.
We supply a curated selection of lathe inserts for parting, grooving, and turning steel. This includes PVD and PC9030 coated carbide options built for durability and consistent performance. By concentrating on these proven specifications, we provide dependable tooling that meets the demands of CNC machining and production environments without the complexity of an overly broad catalog.
Selecting the Right Insert Shape and Grade
The first step in choosing a turning insert is matching its geometry to your tool holder and application. Model numbers like CCMT060204 or MGMN200 are not arbitrary; they are ISO standard codes that define the insert's shape, size, clearance angle, and tolerances.
For example, 'C' style inserts (CCMT) are rhombic and commonly used for internal turning and finishing due to their shape and positive clearance. 'M' style inserts (MGMN) are designed specifically for grooving and parting. Always verify the required ISO code for your tool holder to ensure a secure and accurate fit.
Matching Carbide Material and Coating to Your Workpiece
Our turning inserts are made from carbide, the industry standard for metal cutting due to its exceptional hardness and wear resistance at high temperatures. This makes it ideal for machining steel and other common industrial materials.
Coatings like PVD (Physical Vapor Deposition) or specialized multi-layer coatings (e.g., PC9030) are applied to the carbide base. These thin layers increase lubricity, reduce friction, and act as a thermal barrier, significantly extending tool life and allowing for higher cutting speeds. While specialized tasks may require cermet or CNB inserts, our coated carbide options provide excellent results for most steel turning applications.
Understanding Hardness Ratings: HRC and HRA
Hardness is a specification for a cutting tool's durability. You will see ratings on either the Rockwell C (HRC) or Rockwell A (HRA) scale. Both measure resistance to indentation, but the HRA scale is often used for extremely hard materials like tungsten carbide, where a test on the HRC scale could risk damaging the test diamond.
The inserts in our catalog feature hardness ratings from 92 HRC to 95 HRA. These values represent a high degree of hardness, ensuring the cutting edge resists deformation and wear when machining metals, leading to longer tool life and consistent part quality.
Buying guide
Choosing Turning Inserts
- Are your carbide inserts suitable for machining stainless steel?
- Our coated carbide inserts are designed for general steel processing. While they can work on some austenitic stainless steels, these materials are often challenging to machine. For optimal performance and tool life on specific stainless grades, always check the detailed datasheet for the insert and its coating.
- How do I interpret the numbers in an insert code like CCMT09T304?
- This is an ISO code defining the insert's dimensions. '09' indicates the inscribed circle (IC) size in millimeters, 'T3' specifies the thickness, and '04' denotes the nose radius. Matching these geometric parameters to your application and tool holder is used for proper function.
- Will these lathe inserts fit any standard tool holder?
- Our inserts conform to ISO standards, so a CCMT insert will fit a CCMT tool holder. However, you must precisely match the insert's full designation (e.g., CCMT09T304) to the specifications of your tool holder. Mismatched sizes or shapes will not fit or perform correctly.
- What is the practical difference between 92 HRC and 95 HRA hardness?
- Both ratings indicate a very hard material suitable for cutting steel. The HRA scale is used for materials like carbide that are too hard for the HRC scale. A 95 HRA rating signifies exceptional hardness and wear resistance, while a 92-95 HRC rating also represents a durable cutting edge for demanding applications.
- Which insert type is for parting-off versus internal turning?
- For parting and grooving, use a narrow, rigid insert like those in the MGMN or SP series. For internal turning (boring), you need an insert with geometry that provides clearance inside the workpiece, such as the CCMT type. The shape is purpose-built for the operation.
- How do I maximize the life of my carbide turning inserts?
- Use the recommended speeds and feeds for your material, and ensure the insert is securely clamped in a rigid setup to minimize vibration. Proper use of coolant can also manage heat. An insert has multiple cutting edges; index to a fresh edge as soon as wear becomes apparent to maintain part quality.