Hardness of CBN Grinding Wheels

cbn grinding wheelIf you’re looking for a superabrasive that can withstand high temperatures while maintaining a high degree of accuracy, a CBN grinding wheel may be the perfect solution.

At Eagle Superabrasives, we stock an impressive inventory of over 6,000 diamond and CBN grinding wheels at our North Carolina headquarters. As a leading supplier of superabrasives in the country, we’re sure to have the grinding wheel you’re looking for.


What do you mean by CBN?

CBN, cubic boron nitride, gets its name from the cubic form of boron nitride that coats the wheel. This element, also known as a Borazon crystal, is one of the hardest materials on Earth. The crystal forms when boron and nitride join together at 1,800° Celsius.


What can I use a CBN grinding wheel for?

Borazon has a number of grinding uses, including but not limited to:

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

Because Borazon can withstand high temperatures, it’s ideal for use in the automotive and aerospace industries. When applied to the right applications, CBN wheels can outperform even diamond superabrasive wheels.


Diamond vs. Borazon 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. Borazon 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.


Only One Limiting Factor

Today, a CBN grinding wheel is ideal for machining hard ferrous metals, nickel-based superalloys and cast iron. Jewelers will also use a CBN grinding wheel for jewelry making. The wheel can accurately cut metals, glass, and even diamonds.

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.

Don’t settle for less! Trust the experienced professionals at Eagle Superabrasives for all your grinding wheel needs!

CONTACT US TODAY to get started!