二和ダイヤモンド List of Products and Services

This catalog is a comprehensive catalog from Niwa Diamond Co., Ltd., which produces industrial diamond tools widely used in various fields, including general household appliance parts processing, space, aerospace, optics, and the automotive industry. It features a wide range of products suitable for reinforced concrete, unreinforced concrete, and green concrete, including "blades for concrete," "dry asphalt blades," and "dry joint blades," tailored to specific applications. Please use this for selecting products. [Contents (excerpt)] ■ EHWA DIAMOND SINCE 1975 "HISTORY" ■ Examples of ZENESIS Patterns ■ Blade Products ■ Ring Cutters ■ Dry Core Bits *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

Our "Diamond Rotary Dresser" is designed to quickly and accurately dress specific shapes for high-precision grinding using alumina and silicon carbide grinding wheels. The Niwa Diamond Rotary Dresser is ideal for dressing general grinding wheels with special profiles such as bearings, screws, and gears. We believe that by manufacturing only high-quality rotary dressers, we can satisfy customers in any industry. 【Product Lineup】 ■ For water pumps & ball bearings ■ For gears ■ For injection nozzles ■ For turbochargers *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

Electroplated diamond and CBN tools are made by adhering diamond or CBN particles to the surface of the tool using a nickel plating method, either in a single layer or multiple layers (depending on the application). Using this electroplating method, tools with various shapes and surface textures can be manufactured. To meet the rapidly increasing global demand, our company began producing a variety of high-quality electroplated tools in 1992. In addition to conventional electroplated tools, we also produce reverse electroplated diamond rotary dressers for the automotive and aerospace industries, as well as electroplated wafer dicing blades for the semiconductor industry. 【Product Lineup】 ■ Wheels for grinding brake pads ■ Wheels for grinding ferrite ■ Wheels for grinding SiC molds ■ Electroplated reamers *For more details, please refer to the PDF document or feel free to contact us.

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• Work tools

The "Vitrified Bond Wheel" is a special wheel with much higher hardness than resin or metal bond wheels, and its demand for automated equipment and systems is very high. In the late 1980s, our company developed high-quality vitrified bond CBN wheels for grinding automotive parts such as constant velocity ball joints. Since then, we have expanded the development of vitrified bond wheels that can be used for various applications, including high-precision machine parts, bearings, gears, tools and dies, semiconductors, ceramics, cermets, and particularly for grinding cutting tools made of PCD and PCBN. Our company is making every effort to develop better quality and high-performance vitrified bond products to satisfy the diverse needs of the industry. 【Product Lineup】 ■ Wheels for grinding PCD/PCBN inserts ■ Wheels for grinding the inner surface of injection nozzles ■ Wheels and honing stones for bearing grinding ■ CBN wheels for grinding crankshafts *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

The "metal bond wheel" was invented for grinding various types and shapes of glass. In addition to glass grinding, it has been expanded to various applications such as attaching blades to carbide saws, grinding ferrite, ceramics, carbide alloys, automotive accessories, quartz, and stones. In the late 1970s, our company began designing and manufacturing edge wheels for automotive glass and edge wheels for CRT polishing ranging from 14 inches to 33 inches. Since then, in response to the demands of the high-tech industry, we have started producing electrolytic grinding wheels and have accelerated the continuous development of high-quality products. 【Product Lineup】 ■ Wheels for automotive glass grinding ■ Wheels for lens grinding ■ Honing stones *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

At Niwa Diamond, we offer high-quality "Resin Bond Wheels." Our extensive research and development in diamond tool manufacturing, which began in 1975, is directly reflected in a variety of products through our specialized technology. We provide a complete range of cylindrical grinding wheels, creep feed wheels, saw blade grinding wheels, and internal grinding wheels, all of which are suitable for mass production of grinding components with consistently high-quality finishes, regardless of whether they are used in wet or dry conditions. 【Product Lineup】 ■ Wheels for insert grinding ■ Wheels for saw blade grinding ■ Wheels for micro tool grinding ■ Wheels for insert top and bottom grinding *For more details, please refer to the PDF materials or feel free to contact us.

• Work tools
• Work tools

Our company handles cutting tools such as "chip saws," "hob cutters," and "broaches." "Chip saws" offer advantages such as long lifespan, short cycle time, excellent surface finish, and high dimensional stability. Cutting tools are classified by raw material types such as high-speed steel, carbon steel, ceramics, carbides, and PCD/PCBN tools, and EHWA products are commonly used for grinding carbide tools made primarily of tungsten. 【Advantages】 ■ Long lifespan ■ Short cycle time ■ Excellent surface finish ■ High dimensional stability *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

We offer "Hybrid Wheel Packs" for rotary tools and "Precision Wheel Packs" for micro rotary tools. In addition, we provide "Micro Rotary Cutting Tools" that significantly improve surface and edge quality, as well as "Drills & End Mills," "Taps," and "Rotary Burrs." 【Features】 ■ Achieve high productivity at low tool costs ■ Significantly improve surface and edge quality ■ Accurate edge stability *For more details, please refer to the PDF materials or feel free to contact us.

• Work tools
• Work tools

EHWA manufactures most insert grinding wheels, including those for carbide, ceramics, cermets, and PCD/PCBN. These wheels are designed with specifications suitable for optimal productivity, taking into account cycle time and dressing intervals. With excellent grinding performance, they enable the production of inserts with a clean finish and no chipping at the cutting edge. 【Features】 <Peripheral Grinding Wheels> ■ Shortened cycle time with high feed rates ■ Small chip size ■ Long dressing intervals ■ Machines: Agathon, Wendt, Waida, Ewamatic, and Ewag *For more details, please refer to the PDF materials or feel free to contact us.

• Work tools
• Work tools

The "Super Finishing Stone" achieves stable performance with minimal waste. It offers a tool life that is 5 to 10 times longer than conventional grinding wheels and has excellent grinding capability. It allows for a reduction in honing cycle time. 【Features】 ■ Tool life 5 to 10 times longer than conventional grinding wheels ■ Reduction in honing cycle time ■ Excellent grinding capability ■ Sulfur-free ■ Achieves stable performance with minimal waste *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

The "Vitrified CBN Wheel" reduces physical and thermal damage to bearings. It offers advantages such as high efficiency machining, short cycle times, and low grinding resistance. With stable and precise grinding performance, it achieves excellent quality, surface finish, roundness, and reduced size deviation. 【Features】 ■ High efficiency machining and short cycle times ■ Low grinding resistance ■ Reduces physical and thermal damage to bearings ■ Stable and precise grinding performance *For more details, please refer to the PDF document or feel free to contact us.

• Work tools
• Work tools

This catalog is a comprehensive catalog featuring diamond and CBN grinding wheels handled by Niwa Diamond Co., Ltd. In addition to a robust supply system with leading suppliers, our company is promoting various joint ventures with high-tech manufacturers in Europe, Japan, and the United States for the research and development of ultra-precision diamond tools, rotary dressers, and electroplated precision diamond tools. [Contents] ■ Applications ■ Products ■ Diamond and CBN Wheels *For more details, please download the PDF or contact us.

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