Superabrasive diamond and CBN (cubic boron nitride) wheels were developed to meet the increased use of "difficult-to-grind" materials. Today, the development and use of these specialised grinding wheels has expanded to various industries as demand has increased and new applications are discovered.

Using only the highest quality raw materials and applying the most advanced technologies for manufacturing industrial diamond and CBN tools, EHWA Diamond Industrial have established a world-renowned reputation for high quality products, service and expertise in the industry. EHWA precision diamond / CBN tools as supplied by Australian Industrial Abrasives, meet the heavy demands of modern industry.

Consult your Australian Industrial Abrasives specialist for advice on the best product for your application.

Diamond wheels can be used to grind various materials including tungsten carbide, glass, ceramics, fibreglass, plastics, stone and abrasives. CBN wheels are used to grind high speed steels, tool & die steels, alloy steels, Aerospace alloys and hard stainless steels.

Both products are manufactured in a range of wheel shapes and specifications to suit a wide range of equipment and applications. Important in the selection of the correct diamond or CBN product are the abrasive type, grit size, grade, concentration and bond.

Diamonds can be classified into two categories - natural and synthetic diamonds. since they were first introduced in 1957, synthetic diamonds have become the principal types used in diamond wheels. Different diamond grits with a range of properties and structures have been developed to suit various products and applications.

CBN is the second hardest material know to man and is synthesised in crystal form from hexagonal boron nitride. CBN grinding wheels can give high grinding rations and are superior to diamond for some applications.

Diamond and CBN grits are classified as shown in the chart below. Some manufacturers use the FEPA (European) standard to denote their grit size. Following on from 325/400 grit, micron sizes are used to denote finer grits. The nominal grit size in a grinding wheel indicates the coarsest grits that are present in the wheel.

The hardness or durability of the wheel is expressed on an alphabetical scale, with "A" being the softest and "Z" the hardest. J, N and R are the grades commonly used in our diamond and CBN wheels.

Concentration is the content of diamonds or CBN in the unit volume of a wheel. For example when the content is 25% volume, the concentration is 100, which is equivalent to 4.4 carats / cubic centimetre.
The price of a particular diamond or CBN wheel depends on the concentration as well as the shape and dimensions. The appropriate concentration to use depends on the work material, grinding conditions etc.

Australia Industrial Abrasives will help you determine the best wheel for your application considering all these factors. Contact us here...

Resin Bond wheels are the most commonly used. They have good elasticity, can produce fine surface finishes and give high grinding performance. Many types of resin-bonded diamond wheels are specially made for a specific application. These are particularly suited for the grinding of carbide tipped and inserted tooling such as Saws, Cutters, Reamers and End-mills. They are utilized in precision grinding operations on carbide dies, rolls and carbide wear parts. Resin bonds are the best choice for precision finishing of ceramics as well as grinding tungsten carbide and ceramic thermal spray coatings.

When combined with CBN, resin bonds can be used for grinding high-speed steels, tool and die steels and super alloys with a hardness greater than HRC 50.

• PCD & PCBN
• Diamond dressers
• Rotary diamond dressers
• Electroplated tools
• High precision tools