CBN INSERTS
CBN Inserts for machining hardened steel, cast iron and superalloys
Carbide Inserts · CBN

CBN INSERTS Supplier in India

CBN Inserts are suitable for machining hardened steel, cast iron, and other tough materials. They offer good wear resistance and reliable cutting performance for CNC machining. Metaldur supplies CBN Inserts in various sizes and grades.

Supplier in India

CBN Inserts for Hard Turning and Precision CNC Machining

At Metaldur, we are a trusted CBN Inserts Supplier in India, offering a wide range of Cubic Boron Nitride Inserts for engineering industries, CNC machine shops, automotive manufacturers, aerospace companies, tool rooms, dealers, distributors, and bulk industrial buyers across India. Our inserts are suitable for hard turning, finish turning, boring, profiling, and precision machining applications.

CBN Inserts (Cubic Boron Nitride Inserts) are advanced cutting inserts specially designed for machining hardened steel, cast iron, sintered metals, and other hard materials. Known for their exceptional hardness, wear resistance, and thermal stability, CBN inserts are widely used for high-speed finishing and hard turning applications where precision and long tool life are essential. Dealers of CBN Inserts can supply durable cutting solutions for hardened steels, cast iron, and other demanding materials where high wear resistance and consistent machining performance are required.

Whether you need inserts for machining hardened steel shafts, bearing components, cast iron parts, or high-hardness alloy materials, our CBN Cutting Inserts provide reliable performance, excellent dimensional accuracy, and extended tool life. We supply dependable cutting tool solutions with competitive pricing, technical support, and PAN India delivery. For machining aluminium and other non-ferrous materials, Metaldur also supplies PCD Inserts designed for suitable high-speed machining applications. Traders of CBN Inserts can offer precision tooling options for CNC turning and finishing operations, helping machining businesses select suitable insert grades and geometries for their applications.

For aluminium, brass, copper, and non-ferrous machining, explore our PCD Inserts for high-speed precision performance.

PCD Inserts
CBN Inserts Supplier in India
The Basics

What Are CBN Inserts?

CBN Inserts are cutting inserts made with Cubic Boron Nitride (CBN), one of the hardest cutting materials after diamond. They are specifically developed for machining ferrous materials with high hardness, where conventional carbide inserts may wear quickly.

Unlike standard carbide inserts, CBN Inserts maintain their cutting edge at high temperatures and allow hard turning operations without sacrificing machining accuracy. Their superior wear resistance makes them suitable for continuous production environments requiring consistent quality and longer tool life. Importers of CBN Inserts can source different CBN grades, cutting geometries, and insert configurations to meet the requirements of industrial machining and high-performance cutting applications.

Today, CBN Turning Inserts are widely used in CNC machining industries because they help improve productivity, reduce tooling costs, and achieve excellent surface finishes on hardened materials. Distributors of CBN Inserts can provide dependable cutting tools to CNC workshops, engineering companies, and manufacturing units for hard turning, cast iron machining, and precision finishing operations.

At a Glance

CBN Inserts Product Specifications

Product Name
CBN Inserts
Product Type
Cubic Boron Nitride Cutting Inserts
Cutting Material
Cubic Boron Nitride (CBN)
Machine Compatibility
CNC Lathes & Turning Centres
Operations
Hard Turning, Finishing, Facing, Boring, Profiling
Insert Shapes
CNGA, CNMG, DNGA, DNMG, TNGA, TNMG, VNGA, VNMG, WNGA, WNMG, Round and Custom options subject to availability
Workpiece Hardness
Up to 68 HRC (depending on application)
Application Materials
Hardened Steel, Cast Iron, Bearing Steel
Surface Finish
Excellent
Supply Area
PAN India
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Your Sourcing Partner

Why Choose Metaldur?

Metaldur is a trusted CBN Inserts Supplier in India, supplying reliable cutting tools for hard turning and precision CNC machining applications.

We are committed to supplying reliable cutting tools that help engineering industries, machine shops, dealers, and industrial buyers improve productivity and machining efficiency.

Features and Benefits

Key Features and Benefits of CBN Inserts

CBN Inserts are designed for demanding hard-turning and precision CNC machining applications. Their excellent hardness, wear resistance, and thermal stability make them suitable for machining hardened steel, cast iron, bearing steel, and other difficult-to-machine ferrous materials.

Exceptional Hardness
Excellent Wear Resistance
High Thermal Stability
Long Tool Life
Superior Surface Finish
High-Speed Machining
Improved Dimensional Accuracy
Suitable for Hard Turning
Reduced Tooling and Production Costs
Reliable Performance in CNC Machining
Exceptional Hardness

Cubic Boron Nitride (CBN) is one of the hardest cutting materials available after diamond. This makes CBN Inserts suitable for machining hardened materials where conventional carbide inserts may not provide the required tool life.

Hover any feature to read its description.

Where They Are Used

Applications of CBN Inserts

CBN Inserts are widely used in precision CNC machining applications where hardened materials require excellent dimensional accuracy, high cutting speeds, and long tool life. Their exceptional hardness and thermal stability make them the preferred choice for hard turning and finishing operations.

Our CBN Inserts are suitable for the following applications:

Hard Turning
Precision machining of hardened steel components without the need for grinding.
External Turning
Accurate machining of hardened shafts, rollers, and cylindrical components.
Facing
Creates flat and smooth surfaces on hardened workpieces.
Continuous Cutting
Stable cutting performance during long production runs.
Bearing Component Machining
Ideal for machining hardened bearing races and rings.
Finish Turning
Produces excellent surface finishes with tight dimensional tolerances.
Internal Turning
Precision machining of internal diameters and bores.
Profile Turning
Machining complex contours with excellent repeatability.
High-Speed CNC Machining
Supports faster machining cycles while maintaining insert life.
Gear Manufacturing
Suitable for machining hardened gears and transmission components.
Who We Supply

Industries We Serve

Metaldur supplies CBN Inserts to various industries across India.

Our products are widely used in:

Automotive Industry
Aerospace Industry
Precision Engineering
CNC Machine Shops
Tool Rooms
Railway Industry
Bearing Manufacturing
Gear Manufacturing
Die & Mould Industry
Heavy Engineering
Industrial Machinery Manufacturing
General Engineering
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Metaldur CBN Inserts
Material Compatibility

Materials Suitable for Machining

CBN Inserts are specifically designed for hard ferrous materials.

Material Suitable
Hardened Steel (45–68 HRC)
✅ Excellent
Bearing Steel
✅ Excellent
Tool Steel
✅ Excellent
Alloy Steel
✅ Excellent
Cast Iron
✅ Excellent
Chilled Cast Iron
✅ Excellent
Powder Metallurgy Parts
✅ Excellent
Sintered Metals
✅ Excellent
Stainless Steel
⚠️ Depends on Grade
Aluminium
❌ Not Recommended
Copper
❌ Not Recommended
Brass
❌ Not Recommended
Insert Types

Types of CBN Inserts

Different machining operations require different insert designs and cutting-edge configurations.

CBN Turning Inserts
Designed for hard turning of hardened steel and alloy components.
CBN Finishing Inserts
Ideal for high-precision finishing operations requiring superior surface quality.
CBN Boring Inserts
Used for machining precision internal diameters in hardened materials.
CBN Profiling Inserts
Suitable for contour machining and profile turning operations.
Solid CBN Inserts
Manufactured entirely from CBN for demanding applications requiring maximum wear resistance.
Brazed CBN Inserts
Features a CBN cutting tip brazed onto a carbide substrate, offering an economical solution for many hard-turning applications.
Insert Shapes

Common Insert Shapes Available

Metaldur supplies CBN Inserts in various insert geometries suitable for CNC machining.

Common insert styles include:

CNGA
CNMG
DNGA
DNMG
TNGA
TNMG
VNGA
VNMG
WNGA
WNMG
Round CBN Inserts

The appropriate insert shape depends on the machining operation, workpiece material, and required surface finish.

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Grade Selection

Available CBN Grades

Different CBN grades are available for specific machining requirements.

High CBN Content Grade
Suitable for continuous machining of cast iron and hardened steel, offering excellent wear resistance.
Medium CBN Content Grade
Provides a balance between toughness and wear resistance for general hard-turning applications.
Low CBN Content Grade
Designed for interrupted cutting and applications requiring greater edge strength.

Selecting the appropriate CBN grade improves tool life, machining quality, and production efficiency.

Side by Side

CBN Inserts vs Carbide Inserts

CBN Inserts Carbide Inserts
Tool Life
Excellent
Good
Wear Resistance
Very High
High
Hard Turning
Excellent
Limited
Surface Finish
Excellent
Good
High-Speed Machining
Excellent
Good
Hardened Steel Machining
Excellent
Moderate
Cast Iron Machining
Excellent
Good
Cost
Higher Initial Cost
Lower Initial Cost
Cost Per Component
Lower in High-Volume Hard Turning
Higher
Selection Guide

How to Select the Right CBN Insert

Selecting the right CBN Insert is essential for achieving excellent surface finish, longer tool life, and efficient hard turning. The correct insert depends on the workpiece material, hardness, machining operation, and cutting conditions.

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FAQ

Frequently Asked Questions About CBN Inserts

1. What are CBN Inserts?
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CBN Inserts are cutting inserts made from Cubic Boron Nitride, one of the hardest cutting materials available. They are mainly used for machining hardened steel, cast iron, and other hard ferrous materials with excellent precision and long tool life.
2. What are CBN Inserts used for?
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CBN Inserts are commonly used for:
• Hard Turning
• Finish Turning
• Facing
• Boring
• Profile Turning
• Precision CNC Machining
They are ideal for replacing grinding operations in many hardened steel applications.
3. Which materials can be machined using CBN Inserts?
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CBN Inserts are suitable for machining:
• Hardened Steel
• Bearing Steel
• Tool Steel
• Alloy Steel
• Cast Iron
• Chilled Cast Iron
• Powder Metallurgy Components
• Sintered Metals
4. What is the difference between CBN Inserts and PCD Inserts?
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CBN Inserts are designed for hardened ferrous materials such as steel and cast iron, while PCD Inserts are best suited for non-ferrous materials like aluminium, brass, copper, composites, and graphite.
5. Which CBN Insert is best for hardened steel?
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The best CBN Insert depends on the hardness of the material, machining operation, and cutting conditions. High-quality CBN grades designed for hard turning generally provide the best wear resistance and surface finish.
6. How do I choose the right CBN Insert?
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Consider the following:
• Workpiece material
• Material hardness
• Machining operation
• Insert shape
• Nose radius
• CBN grade
• Cutting speed
• Feed rate
• Machine rigidity
Proper selection improves machining performance and tool life.
7. What are the main benefits of using CBN Inserts in CNC machining?
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CBN Inserts offer long tool life, high wear resistance, excellent heat resistance, superior surface finish, high-speed machining capability, and consistent dimensional accuracy when used with suitable materials and cutting conditions.
8. Are CBN Inserts suitable for CNC machines?
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Yes. CBN Inserts are widely used on CNC lathes and turning centres for precision machining of hardened steel and cast iron components.
9. What CBN grades are available?
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Common CBN grades include:
• High CBN Content
• Medium CBN Content
• Low CBN Content
Each grade is selected based on workpiece material and machining conditions.
10. How long do CBN Inserts last?
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CBN Inserts generally last much longer than carbide inserts when machining hardened materials. Tool life depends on cutting parameters, insert grade, material hardness, and machining conditions.
11. Can CBN Inserts replace grinding?
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Yes. In many hard-turning applications, CBN Inserts can replace conventional grinding operations while maintaining excellent dimensional accuracy and surface finish, helping reduce machining time and production costs.
12. Which industries use CBN Inserts?
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CBN Inserts are widely used in:
• Automotive Industry
• Aerospace Industry
• Bearing Manufacturing
• Gear Manufacturing
• Railway Industry
• Precision Engineering
• CNC Machine Shops
• Heavy Engineering
13. Are CBN Inserts suitable for interrupted cutting?
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Yes, certain low CBN content grades are specially designed for interrupted cutting applications because they offer greater toughness and edge strength.
14. Why choose Metaldur for CBN Inserts?
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Metaldur is a trusted CBN Inserts Supplier in India, supplying quality cutting tools with technical support, competitive pricing, reliable product quality, and PAN India delivery for industrial customers.
15. Does Metaldur supply CBN Inserts across India?
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Yes. Metaldur supplies CBN Inserts across India to engineering companies, CNC machine shops, dealers, distributors, and industrial buyers with prompt service and dependable delivery.
Pricing

CBN Inserts Price in India

The price of CBN Inserts in India depends on factors such as insert shape, CBN grade, CBN content, geometry, nose radius, application, and order quantity. Metaldur supplies CBN Inserts at competitive prices for dealers, distributors, CNC machine shops, engineering companies, and bulk industrial buyers across India. Contact us for current pricing, product availability, and suitable CBN Insert options based on your machining requirements.

Get current pricing and product availability for CBN Inserts based on your requirements.

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Looking for a reliable CBN Inserts Supplier in India? Metaldur supplies high-quality Cubic Boron Nitride (CBN) Inserts for precision machining applications across India.

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