Monocrystalline CBN Powder

Engineered Monocrystalline CBN Powder for Superior Hardness and Precision Grinding

Enhance Grinding with Monocrystalline CBN Powder

Monocrystalline Cubic Boron Nitride (CBN) powder offers exceptional hardness, thermal stability, and wear resistance, making it an ideal abrasive for grinding ferrous materials and hardened steels. Crownkyn’s monocrystalline CBN powder is engineered for high strength and sharpness, ensuring consistent cutting performance and excellent surface finish even in the most demanding applications.

By choosing Crownkyn, you benefit from a stable supply of high-purity, tightly graded monocrystalline CBN powder. With superior fracture toughness and controlled crystal morphology, our CBN enhances grinding efficiency, improves dimensional accuracy, and extends the life of your tools.

Enhance your manufacturing processes with Crownkyn’s precision-engineered monocrystalline CBN, the dependable choice for efficiency, precision, and durability.

CBN-B10

Characteristic: Black, irregular shape with prominent sharp edges, easily fractured and highly self-sharpening. Delivers higher performance and grinding efficiency

Application：suitable for resin bond systems and low-temperature grinding.

CBN-B15

Characteristic: Black, irregular shape, medium strength, with good self-sharpening properties and excellent workpiece surface finish.

Application：Suitable for resin bond and vitrified bond systems.

CBN-B50

Characteristic:BBlack monocrystalline, medium blocky shape, medium strength, high thermal stability, with a well-balanced combination of fracturing strength and characteristics to ensure both grinding efficiency and tool life.

Application：Suitable for vitrified and metal bond systems.

CBN-A80

Characteristic: Brown-black, irregular shape with prominent sharp edges, high strength, and high thermal stability.

Application：Suitable for heavy-duty grinding with resin, vitrified and metal systems.

CBN-A90

Characteristic:Dark brown, complete crystal shape, high strength, and high thermal stability

Application：Widely used in metal bond systems and electroplated tools.

CBN-A70

Characteristic: Golden yellow, with complete crystal shape, high strength, and excellent thermal stability.

Application：Suitable for metal bond systems and electroplated tools.

CBN-A99

Characteristic: Golden monocrystalline, blocky particles, with high toughness and thermal stability.

Application： Mainly used in metal bond systems and electroplated tools, suitable for grinding hard-to-machine materials such as tool steel, carbide alloys, and super cobalt alloys.

Trusted Supplier of High-Performance Monocrystalline CBN Powder

At Crownkyn, we focus on delivering monocrystalline CBN powder solutions that meet your demanding grinding and machining applications. With high thermal stability, excellent toughness, and superior wear resistance, each particle is engineered to enhance tool life, maintain cutting efficiency, and perform reliably on hard-to-machine materials

Tailor Monocrystalline CBN Powder Solutions

Tailored Size Range: Available from 10 μm to 600 μm, suitable for a wide range of grinding and machining applications on ferrous and hard-to-machine materials.
Superior Thermal Stability: High resistance to heat and oxidation ensures reliable performance in high-temperature processes, extending tool life.
Optimised Bond Compatibility: Engineered for use in metal bond, resin bond, and vitrified bond systems, delivering strong retention and consistent grinding efficiency.
Consistent Quality Control: Strict monitoring of particle shape, size distribution, and purity guarantees stable performance and batch-to-batch consistency.
Excellent Toughness and Wear Resistance: Balanced fracture properties and durability provide efficient cutting while maintaining long service life of your tools.

Discover Crownkyn’s range of high-performance single crystal CBN powder solutions.
Work with our technical team to select the optimal grit size, crystal strength, and surface treatment to suit your specific bond system and application requirements.

Why Choose Monocrystalline CBN Powder from Crownkyn

At Crownkyn, we understand that every grinding and finishing application demands the right CBN solution. Our monocrystalline CBN powder is engineered with high crystal strength, sharp cutting edges, and consistent grit size to meet the demands of your bond system and application. Count on us for stable quality, technical support, and reliable performance in your production.

Factory-Direct Expertise

With our own dedicated production facility, we deliver high-strength monocrystalline CBN powder directly, ensuring faster lead times, customised solutions, and responsive technical support within 24 hours.

Competitive & Transparent Supply

Our factory-direct model provides consistently sharp and durable CBN powder at competitive rates, trusted by diamond tool manufacturers and material suppliers in over 40 countries, with an 85% repeat order rate.

Stable Quality You Can Rely On

We control every step of production — from raw material synthesis through precise grading and optional surface treatment — to ensure uniform crystal strength, thermal stability, and performance in every batch.

Frequently Asked Question

Can you provide free samples for quality testing?

Free samples of synthetic diamond powder or CBN powder about 50cts can be provided for quality test. Sample preparation typically takes 3–5 working days, and international delivery is about 7 days by air.

Can you provide test reports of products？

we can provide analysis reports upon request. These may include particle size distribution（PSD）, crystal morphology, purity, magnetic content, and thermal stability, especially important for high-performance products.

What is MOQ of the product? Are there any volume discounts?

Pricing depends on product type (diamond or CBN), grit size, and application. MOQ usually starts from 1kg (5000ct). Volume discounts are available for bulk orders or long-term partnerships.

What is the typical delivery time? Is there any emergency production capacity to cope with sudden demand?

Standard delivery time is 7–15 working days after confirming the order. We maintain stock for regular grades and can prioritize production to support urgent requirements when needed.

Is the packaging moisture- and shock-proof?

All products are packed in sealed, anti-static, moisture-proof PE bags, or PE bottles and sealed in shock-proof cartons. And all packaging complies with international transport regulations.

Do you support customised production？

Absolutely. We support customized coatings (e.g., Ti, Ni, Cu) and tailor-made diamond powder and CBN powder to match different bonding systems and tool applications.

Can the supplier provide complete customs clearance documents？

We provide a full set of export documents including Certificate of Origin, MSDS, Packing List, and Commercial Invoice. Specific documents can be arranged based on your destination country’s requirements.

What are the transport options (air, sea, rail)?

We commonly offer air freight. Logistics can be handled by our team or your nominated forwarder, depending on your preference.

Is the supplier's production capacity stable and can it meet our order requirements in the long run?

Yes. Our production facilities ensure stable monthly output, supported by ISO-standardized quality control. We are able to meet ongoing demands and scale production for long-term cooperation.

If the product quality is not qualified, can it be returned or replaced?

In case of verified quality issues, we offer free replacement or return. All related costs including shipping are covered by us. We prioritize long-term trust and transparency with our clients.

Manufacturing Workshop

Monocrystalline CBN Powder
The Comprehensive Guide (2024)

Explore how monocrystalline CBN powder can significantly improve the precision and durability of your grinding operations. Specially designed for diamond tool manufacturers, precision finishing suppliers, and distributors, this comprehensive guide showcases its superior performance in grinding, honing, and finishing ferrous materials. With stable quality and dependable supply, Crownkyn’s monocrystalline CBN powder delivers tailored solutions that align with your specific industrial requirements.

Table of Contens

在此添加您的标题文本

这是测试文本，单击 “编辑” 按钮更改此文本。

What is Monocrystalline CBN Powder?

Monocrystalline CBN powder is a high-performance synthetic abrasive produced under controlled High Pressure High Temperature (HPHT) conditions, similar to the process used to create synthetic diamonds. During this process, hexagonal boron nitride is transformed into single-crystal cubic boron nitride particles under extreme pressure and temperature.

Crownkyn Diamond manufactures monocrystalline CBN powder of outstanding quality, featuring exceptional hardness, thermal stability, and chemical resistance when working with ferrous materials. Available in well-defined grit sizes for grinding, honing, and finishing, this powder is specifically engineered for demanding applications in industrial tool manufacturing and abrasive distribution, meeting the strict requirements of precision machining.

Benefits of Monocrystalline CBN Powder

Coated diamond powder enhances bond retention, improves thermal stability, and protects the diamond from oxidation and graphitisation. Its uniform coating strengthens the diamond-to-binder adhesion, extending tool life and ensuring reliable performance under high loads and temperatures.

Superior Single-Crystal Strength

With its durable single-crystal structure, monocrystalline CBN powder offers exceptional hardness and toughness for high-precision grinding and finishing of ferrous materials.

Outstanding Thermal Stability

Excellent thermal stability ensures reliable performance at high grinding temperatures, maintaining tool integrity and extending service life.

Excellent Wear Resistance

Its strong crystal integrity resists fracture and abrasion, providing sharp cutting edges, reduced wear, and consistent performance over time.

Stable and Uniform Particle Quality

Manufactured through advanced HPHT technology, each particle exhibits uniform size, shape, and crystal strength, ensuring process consistency and predictable results.

Broad Industrial Compatibility

Tailored for versatility, monocrystalline CBN powder meets the rigorous demands of automotive, aerospace, bearing, and precision engineering industries.

Technical Specifications and Sizing Standards

Crownkyn’s monocrystalline CBN powder is manufactured under strict quality control to deliver consistent particle shape, size, and crystal integrity. Our CBN powder is graded to international standards, ensuring predictable performance in precision grinding and finishing applications

Grit Sizes:
Available in a wide range of grit sizes, from coarse to micron and sub-micron grades, to suit both rough grinding and fine finishing.

Crystal Structure: Single-crystal CBN with high strength, sharp cutting edges, and excellent thermal stability for ferrous materials.

Shape and Surfac: Carefully controlled to produce uniform, blocky particles with stable geometry for optimal bond retention and wear resistance.

Bond Compatibility: Designed to perform reliably in resin,vitrified, metal and electroplated bond systems.

把粒度表放这里

Bond System Compatibility

Monocrystalline CBN powder is engineered to optimise compatibility with a wide range of bond systems, ensuring superior grit retention, thermal stability, and wear resistance in abrasive tools. Our advanced processing and optional surface treatments enhance the interaction between CBN particles and bond materials, delivering consistent performance in demanding grinding and finishing applications.

Resin Bond CBN Tools

The tough, single-crystal structure of monocrystalline CBN offers excellent thermal stability and high fracture toughness, providing superior grinding efficiency and extended wheel life in resin bond systems, particularly for ferrous materials.

Vitrified Bond CBN Tools

With its sharp edges and robust mechanical strength, monocrystalline CBN ensures strong bonding and stable cutting in vitrified systems, delivering consistent performance for precision grinding applications.

Metal Bond CBN Tools

Outstanding wear resistance and thermal conductivity make monocrystalline CBN highly suitable for metal bond systems, ensuring long service life and efficient stock removal in demanding environments.

Electroplated CBN Tools

The high strength and sharpness of monocrystalline CBN particles allow secure adhesion in electroplated tools, supporting aggressive cutting action and reliable performance across a range of ferrous materials.

Applications Across Various Grinding and Machining Industries

Crownkyn’s monocrystalline CBN powder is trusted in industries that require exceptional thermal stability, hardness, and wear resistance. Designed specifically for machining ferrous materials, our CBN delivers consistent performance and long tool life in demanding environments.

Automotive & Aerospace：Grinding of hardened steels, gears, bearings, and heat-resistant alloys for engines, transmissions, and structural components with high dimensional accuracy and surface quality.
Tool Manufacturing：Production and sharpening of high-speed steel and other ferrous cutting tools using resin, metal, vitrified, and electroplated CBN wheels and tools.
Bearing & Precision Components：Finishing of hardened bearing races, rollers, and precision steel parts requiring superior wear resistance and tight tolerances.
Metal Forming & Rolling：Grinding and maintenance of rolls, dies, and punches used in metal forming and rolling mills, where durability and thermal stability are critical.
Heavy Machinery & Energy：Machining of large, hardened steel components and heat-resistant alloys for power generation, mining, and heavy equipment industries.

With its high fracture toughness and strong bond retention, Crownkyn’s monocrystalline CBN ensures reliability and efficiency in a wide range of grinding and machining applications.

How to Choose the Right Monocrystalline CBN Powder

STEP 1

Define Your Application

Determine whether the CBN will be used for rough grinding, fine grinding, finishing, or precision machining. This helps identify the required grit size and particle toughness.

STEP 2

Choose the Appropriate Grit Size

Select the grit size according to your processing goals — coarse (e.g., 40/50–80/100) for aggressive stock removal, medium (100/120–170/200) for general grinding, and fine (200/230–325/400) for finishing and achieving tight tolerances.

STEP 3

Match the Bond System

Ensure the CBN powder is compatible with your bond type. Resin bonds work well with tough, sharp particles; vitrified bonds require blocky, stable crystals; metal bonds demand high wear resistance; electroplated tools benefit from angular, strong particles.

STEP 4

Consider the Processed Material

Select CBN grades based on the material you are grinding,which is ideal for hardened steels, high-speed steel, cast iron, and other ferrous alloys to achieve efficient cutting and long tool life.

STEP 5

Consult Technical Support or Request Samples

If you’re unsure which grade suits your needs, Crownkyn’s technical team is ready to assist and can provide samples for evaluation, ensuring you select the right solution for your production process.

Ensuring Quality and Consistency in Production

At Crownkyn, we prioritise consistency and quality across every batch of Monocrystalline CBN powder to ensure stable performance in your production.

Controlled Crystal Structure: Each batch of monocrystalline CBN is manufactured to achieve a uniform, single-crystal structure with high toughness and sharpness, ensuring consistent grinding performance and longer tool life.

Accurate Size Classification: Advanced laser particle size analysis and precision sieving guarantee a narrow particle size distribution and uniform shape, supporting predictable bond behaviour and surface finish quality.

Strict Purity Control: ICP and XRF analysis are employed to detect and minimise metallic and non-metallic impurities, preserving the integrity of the CBN and preventing defects during high-temperature and high-load applications.

Stable Batch-to-Batch Quality: Magnetic separation, optical inspection, and functional testing are conducted on every lot to maintain consistent particle toughness, thermal stability, and coating adhesion where applicable.

Traceable Production Process: Comprehensive production records and quality documentation enable full traceability of each batch, ensuring reliability and confidence in your grinding and machining operations.

Sample Testing and Performance Verification

At Crownkyn, we know the performance of your diamond tools and precision processes relies on consistent, high-quality diamond powder. Please follow these packaging, handling, and storage guidelines to maintain product integrity from delivery to application.

Custom Sample Preparation

We prepare tailored sample quantities in your specified grit sizes, grades to match your bond system and application needs.

Application-Based Testing

Evaluate our single crystal CBN powder in your own processes or through third-party testing to assess grinding efficiency, bond retention, and tool wear under real operating conditions.

Technical Support Service

Our technical team helps you analyse test results, recommend adjustments, and optimise product specifications for the best performance in your tools.

Performance Feedback Loop

Your feedback guides us in refining particle shape, size and distribution, , ensuring greater grinding stability, extended tool life, and consistent results.

Packaging, Handling, and Storage Guidelines

Packaging

Moisture-proof and anti-static containers
Sealed plastic bottles or vacuum-sealed foil bags
Outer cartons for bulk protection
Custom packaging available on request

Handling

Wear gloves and masks to avoid inhalation and skin contact
Use clean, dry tools when opening or transferring
Handle in a clean, controlled environment

Storage

Keep sealed in original packaging until use
Store in a cool, dry, and well-ventilated place
Avoid moisture, sunlight, and extreme temperatures

Hey, I’m Ashley Wei, the sales engineer of crownkundiamond.com Family-run business.
An expert of agriculture protection textile specialist.
In the past 26 years, we’ve supported 100+ clients across 35 countries, including diamond tools manufacturers and synthetic diamond powder distributors to significantly enhance their product quality and efficiency. The purpose of article is to share insights on advanced abrasive solutions, helping you produce higher quality diamond tools with improved performance and durability.