We manufacture high-precision, high-efficiency diamond and CBN tools.

Diamond—the hardest known material on Earth—is widely used across industries such as automotive, tooling, electronics, and semiconductors as a cutting and grinding material.
While diamond offers exceptional hardness, its relatively low thermal resistance has led to the widespread use of cubic boron nitride (CBN), which has the second-highest hardness after diamond.

CBN (Cubic Boron Nitride), a superabrasive developed by General Electric in the United States, is highly thermally stable and ideally suited for machining hardened steels (HRC50+), such as tool steels, die steels, cast iron, and various alloy steels, as well as nickel- and cobalt-based superalloys with hardness over HRC40.

Cutting Tools

– Cemented Carbide
– Cermet
– Ceramic
– (Alumina,etc.)

Electronic Components

– Ceramic
– Silicon
– Germanium

Magnetic Materials

– Ferrite
– Rare Earth Cobalt

Jewellery

Hard and Brittle Materials

– Glass
– Crystal
– Ceramic Ware

Stones and Ceramic Products

– Stones
– Fire-resistant Material
– Tile
– Asphalt
– Concrete

Graphite

Abrasion Resistant Metal

– Thermal Sprayed Metal
– Stellite
– Ferrotic

Plastics

– Fiber Reinforced Plastic

General Grinding Wheels

Cutting Tools

– High Speed Tool Steel
– Alloy Tool Steel
– Carbon Tool Steel

Abrasion Resistant Tools

– Alloy Tool Steel
– Stellite
– Thermal Sprayed Metal

Corrosion Resistant Metal

– Stainless Steel

Structural Components

– Chrome Molybdenum Steel
– Nickel Chromium Steel
– Chromium Steel
– High Carbon Chromium Bearing Steel

Heat Resistant Metal

– Heat Resisting Steel
– Inconel
– Titanium Alloy
– Cemented Carbide
– Hastelloy

Cast Iron

Magnetic Materials

– Sendust
– Alnico

Diamond wheels are grinding wheels that utilize diamond particles as the cutting edges. Diamond, being the hardest known material on Earth, possesses excellent properties such as high wear resistance, chemical stability, and superior thermal conductivity, making it ideal for grinding hard and brittle materials.

In contrast, CBN (Cubic Boron Nitride) wheels are used for grinding ferrous materials, thanks to their exceptional heat resistance and lower reactivity with iron, while maintaining a hardness second only to diamond.

Compared to conventional alumina wheels, CBN wheels offer a higher material removal rate, longer wheel life, easier dimensional control, sustained sharpness, and minimal grinding heat, effectively preventing thermal damage to the workpiece. These features make them particularly well-suited for continuous, long-duration grinding processes.

With decades of experience, our company manufactures both diamond and CBN wheels, offering optimal solutions tailored to the specific needs of our customers.

When mounting the wheel, be sure to thoroughly clean the mounting hole and flange contact surfaces.
Install the wheel securely and correctly to minimize runout, using a dial gauge for precise alignment.

After mounting, balance the wheel using balance weights and measure runout.
Ensure that both the side and outer peripheral runout are kept within 0.02 mm or less.

Improper wheel installation may cause chatter marks on the workpiece, excessive machine vibration, increased grinding noise, and significantly shortened wheel life.

The peripheral speed of diamond wheels is determined by considering factors such as the wheel’s shape, dimensional specifications, the type of grinding machine, and the material of the workpiece. Generally, we recommend operating within the following speed range to ensure optimal performance and safety.

CBN wheels exhibit excellent thermal stability, allowing for increased peripheral speeds which in turn improve the grinding ratio.
However, when performing dry grinding, grinding burn may occur on the workpiece; therefore, please use within the speed ranges specified above.

For both diamond and CBN wheels, the type of grinding fluid should be selected primarily based on its cooling performance and tailored to the specific workpiece material.
The quality of fluid application has a significant impact on the wheel’s lifespan and grinding efficiency, so please ensure that sufficient fluid is applied to the grinding point.

Truing of diamond wheels is mainly performed using methods such as brake dressers. Under no circumstances should single-point dressers be used for truing.
If the wheel’s cutting performance deteriorates after truing or during use, perform dressing using sticks with the specifications listed below. Adjust the grinding fluid so that slurry forms on the wheel surface during dressing.

Truing of CBN wheels can be performed using brake dressers or sticks; however, regardless of the method, always carry out the process wet and ensure that grinding fluid is applied directly to the contact area between the wheel and the truing tool.
For dressing, use vitrified sticks of type A with abrasive grains one to two grades finer than the CBN wheel’s grain size, and bonding hardness between E and H. An effective dressing method involves firmly pressing the stick against the wheel while adjusting the grinding fluid so that slurry forms on the wheel surface during dressing.

The depth of cut for diamond wheels greatly affects grinding efficiency. Increasing the depth excessively to improve efficiency can significantly shorten the wheel’s lifespan.
Please use the following standard depth of cut values as a guideline:

When replacing alumina grinding wheels with CBN wheels, the following guidelines for selecting grain size are recommended: