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WIDIA CBN NEGATIVE

WIDIA is a brand with a long history in metal cutting tools, originally formed in the United States and now part of the global tooling group that includes Kennametal. The brand is known for indexable inserts, toolholders, and drilling and milling systems used across general machining and high-production environments. The WIDIA CBN NEGATIVE line consists of cubic boron nitride (CBN) indexable turning inserts with negative rake geometry. These inserts are intended for hard turning of ferrous materials, including hardened steels and cast irons, as well as superalloys in some applications. The negative rake design provides edge strength and is typically used in finishing and semi-finishing operations where wear resistance and surface finish are priorities. The line includes multiple ISO-standard geometries: diamond-shaped (D), triangle-shaped (T), and other negative rake forms. Common styles in this range include DNGA, DNMA, TNGA, and VNGA inserts, with sizes such as 150408, 160404, 160408, 332, 331, 432, 433, and 441. These inserts are available with CBN tips or full CBN cutting edges, depending on the model. The part numbers follow WIDIA's standard coding, and each insert is identified by a manufacturer part number (MPN) for traceability. 3G Electric supplies the WIDIA CBN NEGATIVE line as part of its industrial equipment catalog. The product range includes multiple SKUs covering common geometries and edge preparations. For plant engineers and maintenance managers, these inserts are relevant for machining hardened components in sectors such as automotive, aerospace, and general engineering. Procurement specialists can source individual inserts or quantities through 3G Electric's global logistics network. The inserts are packaged and shipped according to standard industrial practices, and 3G Electric provides support for order fulfillment and technical inquiries. This line is not a single product but a family of CBN negative inserts, each with specific geometry and grade. The VNGA inserts, for example, are diamond-shaped with a 35-degree included angle, often used for profiling and finishing. The TNGA inserts are triangular with a 60-degree included angle, suitable for general turning and facing. The DNGA and DNMA inserts are diamond-shaped with 55-degree or 80-degree included angles, used for a range of turning operations. The negative rake geometry means the insert is oriented with a negative top rake angle, which increases edge strength but requires a rigid machine setup. These inserts are typically used in CNC lathes with appropriate toolholders. The CBN material is selected for its hardness and thermal stability when machining hard ferrous materials, typically above 45 HRC. The inserts are not intended for low-carbon or non-ferrous materials where other grades may be more economical. 3G Electric's role is to make these WIDIA inserts available to buyers worldwide, with the ability to quote multiple SKUs and provide logistics support. The catalog includes the MPNs and geometry details needed for identification and reordering. For technical buyers, the key specifications are the insert shape, clearance angle, size, corner radius, and grade. These are encoded in the ANSI or ISO designation, such as DNGA432S0425MT. The 'S' in the designation often indicates a specific edge preparation or grade, and the 'MT' may refer to a WIDIA grade or coating. Buyers should verify the exact MPN and geometry against their application requirements. 3G Electric does not manufacture these inserts; it distributes them as part of its portfolio of industrial components. The company supports the line with order processing, inventory access, and shipping coordination. This brand profile is intended to provide factual information about the WIDIA CBN NEGATIVE line and how 3G Electric supplies it.

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About WIDIA CBN NEGATIVE

WIDIA is a brand with a long history in metal cutting tools, originally formed in the United States and now part of the global tooling group that includes Kennametal. The brand is known for indexable inserts, toolholders, and drilling and milling systems used across general machining and high-production environments. The WIDIA CBN NEGATIVE line consists of cubic boron nitride (CBN) indexable turning inserts with negative rake geometry. These inserts are intended for hard turning of ferrous materials, including hardened steels and cast irons, as well as superalloys in some applications. The negative rake design provides edge strength and is typically used in finishing and semi-finishing operations where wear resistance and surface finish are priorities. The line includes multiple ISO-standard geometries: diamond-shaped (D), triangle-shaped (T), and other negative rake forms. Common styles in this range include DNGA, DNMA, TNGA, and VNGA inserts, with sizes such as 150408, 160404, 160408, 332, 331, 432, 433, and 441. These inserts are available with CBN tips or full CBN cutting edges, depending on the model. The part numbers follow WIDIA's standard coding, and each insert is identified by a manufacturer part number (MPN) for traceability. 3G Electric supplies the WIDIA CBN NEGATIVE line as part of its industrial equipment catalog. The product range includes multiple SKUs covering common geometries and edge preparations. For plant engineers and maintenance managers, these inserts are relevant for machining hardened components in sectors such as automotive, aerospace, and general engineering. Procurement specialists can source individual inserts or quantities through 3G Electric's global logistics network. The inserts are packaged and shipped according to standard industrial practices, and 3G Electric provides support for order fulfillment and technical inquiries. This line is not a single product but a family of CBN negative inserts, each with specific geometry and grade. The VNGA inserts, for example, are diamond-shaped with a 35-degree included angle, often used for profiling and finishing. The TNGA inserts are triangular with a 60-degree included angle, suitable for general turning and facing. The DNGA and DNMA inserts are diamond-shaped with 55-degree or 80-degree included angles, used for a range of turning operations. The negative rake geometry means the insert is oriented with a negative top rake angle, which increases edge strength but requires a rigid machine setup. These inserts are typically used in CNC lathes with appropriate toolholders. The CBN material is selected for its hardness and thermal stability when machining hard ferrous materials, typically above 45 HRC. The inserts are not intended for low-carbon or non-ferrous materials where other grades may be more economical. 3G Electric's role is to make these WIDIA inserts available to buyers worldwide, with the ability to quote multiple SKUs and provide logistics support. The catalog includes the MPNs and geometry details needed for identification and reordering. For technical buyers, the key specifications are the insert shape, clearance angle, size, corner radius, and grade. These are encoded in the ANSI or ISO designation, such as DNGA432S0425MT. The 'S' in the designation often indicates a specific edge preparation or grade, and the 'MT' may refer to a WIDIA grade or coating. Buyers should verify the exact MPN and geometry against their application requirements. 3G Electric does not manufacture these inserts; it distributes them as part of its portfolio of industrial components. The company supports the line with order processing, inventory access, and shipping coordination. This brand profile is intended to provide factual information about the WIDIA CBN NEGATIVE line and how 3G Electric supplies it.

Common Applications

  • Automotive — Hard turning of transmission shafts and gears using WIDIA DNGA432S0425MT inserts for finishing.
  • Aerospace — Machining of hardened superalloy components with WIDIA VNGA332S0525MT inserts for profiling.
  • General engineering — Finishing of hardened steel dies and molds using WIDIA TNGA331S0425MT triangle inserts.
  • Bearing manufacturing — Hard turning of bearing races with WIDIA DNMA441S0420ST inserts for surface finish.
  • Hydraulics — Machining of hardened hydraulic cylinders using WIDIA DNGA431S0425MT inserts for precision turning.
  • Tool and die — Semi-finishing of hardened tool steels with WIDIA TNGA332S0425MT inserts for wear resistance.

Frequently asked questions

Common questions about WIDIA CBN NEGATIVE from 3G Electric.

What is the WIDIA CBN NEGATIVE insert line used for?

The WIDIA CBN NEGATIVE line consists of cubic boron nitride indexable turning inserts with negative rake geometry. They are used for hard turning of ferrous materials such as hardened steels and cast irons, and in some cases superalloys. Typical operations include finishing and semi-finishing where wear resistance and surface finish are required. The negative rake design provides edge strength, making these inserts suitable for interrupted cuts and high-temperature machining. They are not intended for low-carbon steels or non-ferrous materials where other insert grades may be more appropriate.

What geometries are available in the WIDIA CBN NEGATIVE insert range?

The range includes diamond-shaped (D), triangle-shaped (T), and other negative rake geometries. Specific styles found in the catalog include DNGA, DNMA, TNGA, and VNGA inserts. Sizes cover common ISO designations such as 150408, 160404, 160408, 332, 331, 432, 433, and 441. Each insert is identified by a manufacturer part number (MPN) for ordering. The geometry and size determine the included angle, corner radius, and applicable depth of cut. Buyers should match the insert designation to their toolholder and operation requirements.

How do I identify the correct WIDIA CBN NEGATIVE insert for my application?

Start with the insert shape and clearance angle required by your toolholder. The ANSI or ISO designation, such as DNGA432S0425MT, encodes shape, clearance, tolerance, size, and corner radius. The 'S' and 'MT' suffixes may indicate edge preparation or grade. Verify the manufacturer part number (MPN) against WIDIA's catalog or the listing on 3G Electric. Consider the workpiece material, hardness, and operation type (finishing or semi-finishing). If unsure, consult a machining engineer or the toolholder manufacturer for compatibility.

What are the typical specifications of WIDIA CBN NEGATIVE inserts?

These inserts are made of cubic boron nitride, a material with high hardness and thermal stability. They feature negative rake geometry, which increases edge strength. Common sizes include 150408, 160404, 160408, and 332, 331, 432, 433, 441. Corner radii vary by style, such as 0.4 mm, 0.8 mm, or 1.2 mm. The inserts are available with CBN tips or full CBN edges. They are typically used at cutting speeds and feeds suited for hard turning. Always refer to the specific MPN for exact dimensions and grade.

Does 3G Electric stock the full WIDIA CBN NEGATIVE line?

3G Electric supplies multiple SKUs from the WIDIA CBN NEGATIVE line, including diamond and triangle negative inserts. The catalog includes models such as VNGA332S0525MT, TNGA331S0425MT, DNGA432S0425MT, and others. Availability can vary by SKU and quantity. For specific part numbers or bulk requirements, contact 3G Electric for a quote. The company provides global logistics support and can coordinate shipping to various regions. It does not manufacture the inserts but distributes them as part of its industrial equipment portfolio.

What is the difference between DNGA and DNMA WIDIA CBN NEGATIVE inserts?

DNGA and DNMA are both diamond-shaped negative rake inserts, but they differ in clearance angle and tolerance. DNGA typically has a 0-degree clearance angle, while DNMA has a different clearance or tolerance class. The designation also includes size and corner radius, such as DNGA432 or DNMA441. The choice depends on the toolholder and the required cutting conditions. Both are used for hard turning of ferrous materials. Refer to the specific MPN and WIDIA's technical documentation for exact differences in edge preparation and grade.