Leadingtech Diamond Tools - Professional Manufacturer of Solid CBN Inserts, PCD & CBN Tools

About Leadingtech

A trusted name in superhard cutting tools with decades of innovation and global reach.

Company Profile

Leadingtech Diamond Tools Ltd., established in 1988, is a Hi-Tech Joint Venture enterprise in China and a professional manufacturer of superhard cutting tools including PCD, PCBN, Solid CBN tools, and ND tools.

Our products are widely used in the machining of cast iron, HSS rolls, brake drums, brake discs, cylinder liners, engine blocks, gears, pistons, slurry pumps, and more.

With advanced grinding equipment from EWAG, Farman, and Agathon, we guarantee high precision and tight tolerances for turning, grooving, milling, boring, and other applications.

Established in 1988
Exported to America, Europe, Asia
Stable quality, trusted by global clients
ISO-certified manufacturing processes

Our Services

We go beyond manufacturing — we support your success with technical expertise and value-added services.

Technical Guidance

Supply technical suggestions and application support tailored to your machining needs.

Custom Tool Production

Produce new PCD/PCBN and Solid CBN cutting tools based on your specifications.

Regrinding Services

Regrind used PCD and PCBN cutting tools to restore performance and extend life.

Size Modification

Change dimensions of used solid CBN inserts to meet new application requirements.

Laser Cutting

Precision laser cutting of PCD and PCBN blanks for custom tool fabrication.

Global Support

Serving customers across America, Europe, and Asia with fast delivery and support.

Our Products

High-performance superhard cutting tools engineered for precision, durability, and efficiency in demanding industrial environments.

Solid CBN Insert

Ultra-hard cubic boron nitride inserts ideal for high-speed machining of hardened steels and cast irons.

High thermal stability
Excellent wear resistance
Suitable for dry cutting

CBN Insert

Polycrystalline cubic boron nitride inserts for precision turning and finishing of hardened materials.

High hardness (HV 3000–5000)
Low friction coefficient
Long tool life

PCD Insert

Polycrystalline diamond inserts optimized for high-speed machining of non-ferrous metals and composites.

Extreme abrasion resistance
Smooth surface finish
Ideal for aluminum alloys

Non-standard PCD/CBN Tools

Custom-designed cutting tools tailored to unique applications and geometries.

Custom shapes and angles
Fast prototyping
OEM/ODM support

RNGN Solid CBN Insert

Round-shaped solid CBN insert for continuous turning operations with excellent edge strength.

0° lead angle
High feed rates
Vibration resistant

CNGN Solid CBN Insert

Diamond-shaped CBN insert ideal for light to medium cutting with high precision.

80° vertex angle
Positive rake design
Suitable for finishing

SNGN Solid CBN Insert

Square CBN insert offering four usable edges and high material removal rates.

90° approach angle
High rigidity
Versatile for multiple operations

PCD/CBN Grooving Tools

Precision grooving and parting tools made with PCD or CBN tips for extended tool life.

Narrow width options
High dimensional accuracy
Ideal for mass production

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Why Choose Leadingtech?

Decades of experience, cutting-edge technology, and unwavering commitment to quality set us apart.

35+ Years Experience

Established in 1988, we bring decades of expertise in superhard tool manufacturing.

Global Quality Standards

Our tools meet international standards and are trusted by clients worldwide.

Worldwide Reach

Serving customers across North America, Europe, and Asia with reliable delivery.

Quality is Our Life

We treat every product with the highest care — because quality defines us.

Frequently Asked Questions

Get answers to common inquiries about our products and services.

What materials are your tools suitable for?

Our PCD tools are ideal for non-ferrous metals like aluminum and composites. CBN and solid CBN inserts excel in machining hardened steels, cast irons, and HSS rolls.

Can you produce custom-shaped tools?

Yes, we specialize in non-standard PCD/CBN tools and can manufacture custom geometries based on your drawings or samples.

Do you offer regrinding services?

Yes, we regrind used PCD and PCBN cutting tools to restore cutting performance and extend tool life.

What is the lead time for custom orders?

Typical lead time is 15–25 days depending on complexity. Urgent orders can be expedited upon request.

Are your products available in stock?

Standard inserts like RNGN, CNGN, and SNGN are often in stock. Contact us for real-time inventory status.

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Professional Manufacturer of Solid CBN Inserts, PCD & CBN Tools