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CBN Abrasive Tool

CBN abrasive products cover a wide range, from sandpaper sheets to grinding wheels and sanding belts. The common factor is that they all harness the power of Cubic Boron Nitride for abrasive purposes.

CBN abrasive sandpaper sheets are great for precision sanding, often used in applications where traditional abrasives fall short. They excel in grinding hard materials without losing their edge.

CBN abrasive wheels are like the heavy-duty champions of the grinding world. Whether you're sharpening tools or shaping metal, these wheels can handle the toughest jobs with precision and efficiency.

Sanding belts with CBN abrasives are designed for power sanders. They provide consistent and reliable performance, making them ideal for tasks like stock removal and finishing on hard materials.

Flexible Diamond Sanding Belt
Diamond Sanderpaper Sheet
Cubic Boron Nitride  CBN Grinding Wheels


  1. Hard Material Machining: CBN abrasives excel in machining hard materials like hardened steels, cast irons, and superalloys.

  2. High Temperature Stability: They maintain their hardness and cutting ability even at high temperatures, making them suitable for applications involving heat generation.

  3. Longevity: CBN abrasives have a longer lifespan compared to conventional abrasives, reducing the frequency of tool changes and downtime.


  1. Tool Sharpening: Used for sharpening cutting tools such as drills, turning tools, and milling cutters.

  2. Grinding Hardened Steel: Ideal for precision grinding of hardened steel components in industries like automotive and aerospace.

  3. Surface Grinding: Commonly employed in surface grinding applications where high precision and durability are crucial.

  4. Bearings Manufacturing: CBN abrasives play a vital role in the production of high-precision bearings.

  5. Tool and Die Making: Applied in the production of molds, dies, and other tooling requiring precision and wear resistance.


CBN abrasive products come in a range of grit sizes, allowing for different levels of material removal and surface finish. The grit size typically ranges from fine to coarse, similar to traditional abrasive products. Fine grit sizes are suitable for finishing and polishing, while coarser grits are effective for material removal and shaping.

It's important to choose the appropriate grit size based on the specific requirements of your application. Finer grits provide smoother finishes, while coarser grits are more aggressive in material removal.

Keep in mind that the optimal grit size may vary depending on the material being machined and the desired outcome. If you have a specific application in mind, I can provide more tailored information!

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Q: Is CBN harder than diamond?
One of the greatest advantages to using CBN is that it maintains its hardness at room temperature and over a wide variety of temperature ranges. CBN is the second hardest material after synthetic diamond.
Q: How long does a CBN grinding wheel last?
Life span of your CBN wheel depends on the sharpening pressure and workload. The CBN layer does wear over years of use, and if a seller tells you that his CBN wheel will last for your lifetime, it is puffery. Coarse CBN wheels that take the brunt of grinding load, wear sooner.
Q: What is the difference between CBN and diamond stones?
Both types of sharpening stones, CBN and diamond stones, will make a knife perfectly edged after sharpening. However, CBN stones, unlike diamond ones, work faster. With the same grain size in the stone, the scratches left by CBN stones are less jagged compared to diamond stones.
Q: Which is better CBN or diamond sharpening stones?
CBN is softer, sharpening with CBN stone is more delicate (due to the form of crystal), but claimed as less productive than with diamond.
Q: Why is CBN preferred over diamond?
Of the two, diamond is considerably harder at room temperature, (knoop hardness around 7,500 versus the 4,500 of CBN,) but CBN has better thermal and chemical stability, remaining inert at temperatures up to 1,000 oC, versus the 800 oC at which diamond begins to degrade.
Q: What is the difference between CBN and diamond wheel?
Diamonds are better for grinding more delicate items like glass, quartz, and ceramics. CBN doesn't chemically react with iron. This lack of reaction allows CBN to remove more material and last longer than diamonds when grinding most hard metals.
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