CBN Grinding Wheels

If you’re on the market for a CBN grinding wheel, Eagle Superabrasives is the one-stop shop to meet your needs.

With an extensive inventory of over 6,000 CBN, Diamond, and CDX  grinding wheels in stock, Eagle Superabrasives is a leading source of Superabrasive supplies in the United States.

Ninety-percent of orders are on location at our Hickory, NC headquarters where they are ready for same day shipping.

We can even fill custom orders in as little as seven days.

Don’t settle for subpar Superabrasives; contact the experts at Eagle Superabrasives for all your grinding needs.


What Is CBN Abrasive

CBN is a man-made Superabrasive that outperforms Diamond when used for Ferrous grinding operations.

CBN derives its name from its chemical makeup, of the cubic form of boron nitride (CBN). It has a very desirable characteristic that is sought after when working with difficult to grind (DTG) materials.

Among it top characteristics are:

  • extreme hardness
  • strength
  • abrasion resistance
  • superior thermal and chemical resistance.

What Are CBN Wheels Used For?

Due to its high thermal stability and chemical resistance, the CBN grinding wheel is most suitable for grinding hard ferrous materials, hardened steel, bearing steel, nickel based alloys. machining ferrous materials.

CBN grinding wheels are used to sharpen, cut, or remove metal from hard surfaces. Use these wheels when you need a good consistent finish.

Most notably CBN wheels are used to cut HSS metals, like wood tools, blades, bits, and cutters. This type of steel is better than the older high-carbon steel because it can withstand higher temperatures. When you’re tools become dull over time from use, a CBN wheel will bring them back to its sharp use.

CBN wheels have a number of grinding applications, including but not limited to:

  • Cutting tools
  • Compressor parts
  • Fuel injectors
  • Surgical knives

Jewelers will also use a CBN grinding wheel for jewelry making. The CBN wheel can accurately cut metals, glass, and even diamonds.

Because CBN wheels can withstand high temperatures, they’re ideal for use in industries like:

  • Automotive
  • Aerospace
  • Semiconductor Slicing & Dicing
  • Paper Converting Wheels
  • and many more.

When applied to the right applications, CBN wheels can outperform even diamond superabrasive wheels. Hardness is an essential property in any Superabrasive wheel. However, Diamond will lose its hardness at high temperatures that are caused when grinding ferrous materials. CBN, however, does not lose its hardness over a vast temperature range and is thus much more suitable.


Why CBN Wheels Are Perfect for High Speed Grinding?

CBN Grinding Wheels are ideal for high-speed grinding in ferrous metals. High-speed grinding creates high temperatures in the grinding zone, causing the super abrasive particles to heat. Unlike diamond, however, CBN has a higher thermal resistance. In fact, at temperatures exceeding 800 degrees, CBN becomes harder than diamond and cBN is more than able to keep its cutting edge well up to 1000 degrees. As well as a higher thermal resistance, the thermal conductivity of CBN is four and a half times better than copper making it a close competitor diamond. The strength and resistance to thermal attack, while maintaining sharp cutting edges during use, make CBN Grinding Wheels the superior choice compared to conventional and diamond grinding wheels in certain materials.


CBN Wheels Have Superior Thermal Performance

There is a significant significant advantage of CBN’s thermal stability over diamond. Diamond begins to lose a significant amount of hardness at around 700 degrees while CBN remains unchanged at over 1,000 degrees!


CBN Wheel Bonds by Eagle Superabrasives

Our unique bond system retains the CBN particle longer than most other bond systems, providing a longer wheel life and excellent wheel durability and special heat reducing processes ensure the wheel always cuts cool and avoids burning of the tool.

We offer a variety of bonds for our CBN grinding wheels including Phenolic Resin, Polyimide Resin, metal bond, Vitrified bond and Hybrid bonds. All of which can be custom made to fit your needs.


The Importance of the CBN Bonding Layer

A grinding wheel is a combination of CBN particles wrapped with a coating and then embedded in a bonding material (or bond). The bond of a CBN wheel is one of the most important factors when choosing the correct wheel for the job.

If the bond is too hard or too soft it will adversely effect the grinding process. The bond has to wear at the correct rate and hold the abrasive particle in place, in some cases the bond is also used to transfer heat away from the grinding area.

When a wheel wears down, typically the CBN particle erodes or fractures, eventually to a point that the particle is not effective and the coating cannot hold the CBN particle in place. It is pulled out by the material being ground, the bond is soft, and immediately exposes the next particle. This constant exposure of new grains of CBN is what keeps a wheel grinding effectively.


What Size Do Our CBN Wheels Come In?

We can manufacture our CBN Wheels as thin as 0.2mm and up to a maximum diameter of 700mm (27-½”) and anything in between.

Our experts at Eagle Superabrasives have formulated a super strong bond system that ensures our CBN grinding wheel stay cutting faster and last longer, providing higher productivity.


Which Is Harder Diamond or CBN Wheels?

Diamond wheels were the preferred abrasive for grinding hard superalloys. But because of diamond’s carbon makeup, diamond grinding wheels would often dissolve iron at high temperatures.

CBN grinding wheels doesn’t contain large amounts of carbon, making CBN grinding wheels an ideal alternative for grinding hardened steel tools. CBN grinding wheels maintain high levels of accuracy while still removing high amounts of material under extreme heat, making them the perfect alternative to diamond wheels when grinding ferrous metals.

Why CBN Wheels Are Perfect for High Speed Grinding

CBN Grinding Wheels are ideal for high-speed grinding in ferrous metals. High-speed grinding creates high temperatures in the grinding zone, causing the super abrasive particles to heat. Unlike diamond, however, CBN has a higher thermal resistance. In fact, at temperatures exceeding 800 degrees, CBN becomes harder than diamond and cBN is more than able to keep its cutting edge well up to 1000 degrees. As well as a higher thermal resistance, the thermal conductivity of CBN is four and a half times better than copper making it a close competitor diamond. The strength and resistance to thermal attack, while maintaining sharp cutting edges during use, make CBN Grinding Wheels the superior choice compared to conventional and diamond grinding wheels in certain materials.

 


 

How Much Do CBN Grinding Wheels Cost?

CBN grinding wheels range in cost depending on the shape, diameter, thickness, grit, and other factors.


How Do I Use CBN Grinding Wheels?

Like other grinding wheels, CBN Wheels can be put on your grinder and spun at a rate recommended by the manufacturer (do not rotate a wheel faster than recommended). Use these wheels to sharpen tools, cut metals, or grind ferrous metals (a compound that includes iron) such as steel, stainless steel, carbon steel, or cast iron.


How Do I Take Care of My New CBN Grinding Wheel?

Your CBN wheel won’t need any cleaning or maintenance if you use it properly. Only use ferrous metals on the wheel. Soft or mild materials can clog pores and make the CBN wheel loaded and unusable.

If you find that the CBN wheel becomes loaded, use the enclosed dressing stick to “open up” the wheel. Look at our website for instructional video.


CBN Wheel Limitations

Not a lot can limit a CBN Wheel’s performance. What can hinder it, however, is improper use. Do not grind anything other than ferrous metals such as steel, stainless steel, carbon steel, or cast iron.

Don’t use non-ferrous metals such as aluminum, copper, lead, zinc, and tin because they are too soft to be used on CBN Wheels and can clog the wheel, which will stop it’s grinding power.

Actually the only limiting factor of a CBN grinding wheel is the breakdown of the bonding agent. The separation of the bonding layer from the metal core will often shorten the wheel’s life faster than the wearing down of the cutting surface.

However, Eagle Superabrasives uses advanced bond systems and six types of core materials to help guarantee a good bond between the bonding agent and the metal core of the wheel.


Why Should You Use a CBN Grinding Wheel?

It will last longer than all other wheels — including diamond — when used against hard surfaces and high temperatures. It’s best used to grind Ferrous materials with a hardness greater than 42 Rc. It will last longer than all other wheels and give you the results you’re looking for.

  • Safety. CBN grinding wheels are far safer than conventional grit wheels.
  • Wet and dry grinding. Wet and dry grinding is possible with CBN wheels.
  • No dust. Compared to grit wheels, minimal dust is created when using these wheels. However exhaust ventilation is always recommended when grinding!!
  • Minimal heat. When used correctly (and with coolant) little to no heat is transferred to the workpiece using these wheels.

Can You Grind Carbide with CBN Wheels?

No, diamond wheels are recommended for carbide, CBN wheels are recommended for steel.

If you have a product that is a combination of diamond and steel, such as a corrugated knife, give our technicians a call.

A CDX wheel would typically be ideal for this application.


Are CBN Wheels Worth It?

At Eagle Superabrasives Inc. we would say “yes!”

Compared to traditional grit wheels they are expensive, however, these wheels offer far higher performance rates and far longer life than traditional grit wheels.


Where Do I Get a CBN Wheel From?

We sell all types of CBN wheels.

Eagle Superabrasives, Inc. offers CBN wheels in three different bond systems: Hybrid, Resin, and Vitrified. The bond is what holds the abrasive material in place.

Hybrid Bond CBN Grinding Wheels

Hybrid Bond CBN Grinding Wheels

Used in the manufacture of D2, M2, Alloy and Super Alloy End Mills, Drills, and Reamers.

Our unique bond systems, comprised of a mixture of specially selected alloys, ceramics and diamond powders and coatings all sintered in environmental controlled furnaces, offer stock removal rates and tool edge retention that were unheard of only a few years ago.

Hybrid bonds have now become the industry standard bond type for all manufacturing of Ferrous based steel end mills, drills and reamers.

They offer the benefits of hugely reduced cycle times, with material removal rates of up to 10 times that of any resin bond product, wheel edge retention of more than 20 times that of resin bond wheels, lower spindle load, excellent thermal stability, reduced tool deflection plus longer spindle life and no therrmal damage to the tool .

Manufacturing capabilities of up to 10” Diameter

Resin Bond CBN Grinding Wheels

Resin Bond CBN Grinding Wheels

Resin bond is the most commonly used bond system that is used for grinding all types of Ferrous tools such as Tool Steel, Stellite, hardened Alloy and Super Alloys.

Commonly used for metal cutting, tools, glass, and ceramics. It’s cost-effective and highly efficient.

It offers good elasticity, superior surface finish and highly efficient grinding performance at a very cost effective price.

We offer two types of resin:

  1. Phenolic Resins. Typically used for wet or dry grinding, off-hand grinding, centerless grinding and general purpose tool room use.
  2. Polyimide Resins. These resins offer considerable performance increase over phenolic resins. Greater stock removal, better form holding, higher temperature tolerance and minimal wear are all benefits of polyimide body systems.

Manufacturing capabilities of up to 36” diameter

Vitrified Bond CBN Grinding Wheels

Vitrified Bond CBN Grinding Wheels

Vitrified bond CBN wheels are typically selected for grinding Camshafts and Crankshafts, internal and external grinding of cylinders, etc.

Vitrified bond wheels are extremely aggressive and free cutting and provide excellent tool life. They require less dressing and offer longer truing intervals than resin bond wheels. They are cool cutting and are suitable for “lights out” high production grinding in manufacturing environments.

  • Lasts 100-300 times longer than other grinding wheels (non-CBN).
  • Removes heat when grinding.
  • Adaptable to various spindle speeds.

Vitrified Bond – Min. Diameter 3/16 in. / Max. Diameter 39 in. (Segmented)

Trust the experts

When you’re ready to try the best, trust the experts at Eagle Superabrasives. Our experienced staff will provide support and advice along the way. With unparalleled customer service, superior products and fast shipping, Eagle Superabrasives is an easy choice for all your grinding needs. Contact us today to request a quote or place an order!

If you have questions, contact us!

You may call us at 828.261.7281 or contact us here with specific questions.

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