Home | OSG Diamond Tool Co., Ltd.

Notification of change of President

Nissin Diamond hereby announces that Seino Kawabe has stepped down from his position as Representative Director
and Nobuaki Kamiya has been appointed as his successor.
We look forward to your continued support under this new leadership.

Information

2019.12.26	Notice of closure for New Year holidays Thank you for your continued support. Please note that Nissin Diamond will be closed for business on the following dates over the New Year holiday period. New Year holiday December 28, 2019 (Mon) to January 5, 2020 (Mon) Inquiries received during the holiday period will receive a response in sequence after business has resumed. We apologize for any inconvenience caused and thank you for your understanding.

2019.12.26

Notice of closure for New Year holidays
Thank you for your continued support.
Please note that Nissin Diamond will be closed for business on the following dates over the New Year holiday period.

New Year holiday
December 28, 2019 (Mon) to January 5, 2020 (Mon)
Inquiries received during the holiday period will receive a response in sequence after business has resumed.
We apologize for any inconvenience caused and thank you for your understanding.

Topics

2025.06.06	We are pleased to announce the publication of THE DIAMOND BASICS, a textbook and product catalog of diamond cutting tools for the world.
2024.12.01	Notice of company name and website URL change Thank you for your continued support. As of December 1, 2024, Nissin Diamond Co., Ltd. has changed its name to OSG Diamond Tool. Accordingly, the company website URL has also been changed. We intend to put every effort into our work in a brand-new frame of mind. We look forward to your continued support in the future. New company name: OSG Diamond Tool New website URL: https://osg-diamond.co.jp
2022.1.26	We have confirmed that one of our employees has been tested positive for the Coronavirus. Based on the guidance of the local public health center, we will take measures to prevent the spread of the infection and place the highest priority on ensuring the health of our employees as well as quality and product safety.
2021.10.11	MECT2021（Mechatronics Japan 2021) (MECHATRONICS TECHNOLOGY JAPAN 2021), one of the largest machine tool exhibitions in Japan, will be held. Nissin Diamond will exhibit at the OSG Corporation booth, so please come and visit us! Date: October 20th (Wed.) ~ 23th (Sat.), 2021 10:00~17:00 Venue: Port Messe Nagoya, Hall 2 (North), 2A24, OSG Corporation booth
2021.07.28	Monozukuri Review ONLINE No.76 The article, "Super Hale Bite was jointly developed with Makino Milling Machine Co., Ltd. Nisshin Diamond to propose at MECT2021" was published.
2021.07.05	We became a supporting company of MLGs (Mother Lake Goals) which is Lake Biwa's version of SDGs.
2021.06.14	Business tie-up with Makino Milling Machine Co., Ltd. We will continue to provide "Super Hale Bite".
2021.04.01	We have opened the English and Chinese version web site. Please select「Japanese」or「Chinese」button on the upper-right of the page.
2020.01.23	Monodukuri Review Online No. 59 A new article has been published: Leadership of Nissin Diamond Moves from Seino Kawabe to Nobuaki Kamiya After Going from Annual Sales of Less than 500 Million Yen to over 800 Million Yen in Kawabe's Six-year Tenure (available in Japanese only)
2019.08.26	Monodukuri Review Online No. 54 A new article has been published: Nissin Diamond Achieves Year-on-year Growth for 20 Consecutive Months, With Capital Investment Already in Excess of 200 Million Yen (available in Japanese only)
2018.12.01	Change of company name and address

2019.08.26	Monodukuri Review Online No. 54 A new article has been published: Nissin Diamond Achieves Year-on-year Growth for 20 Consecutive Months, With Capital Investment Already in Excess of 200 Million Yen (available in Japanese only)
2018.12.01	Change of company name and address
2018.11.21	Monodukuri Review Online No. 45 A new article has been published about the 50th anniversary of Nissin Diamond Co., Ltd. in September: Focusing on Materials, Uncovering Demand (available in Japanese only)

Concept

The strongest tools, made from the Earth’s hardest mineral
Diamond tools that maximize performance in terms of surface roughness, lifespan and cost effectiveness
Opening up a new world of nanotechnology

Product information

THE DIAMOND BASICS

This catalog is not only a product catalog, but also a world-class textbook on diamond cutting tools.
This catalog is not only a product catalog, but also a textbook covering specialized knowledge for people all over the world who are involved in diamond cutting tools.
Please click on the banner below to take a look.

Update on 2025.06.12

Natural diamond cutting tools

Primarily used for machining aluminum, diamond is attached to existing indexable inserts and used for finish machining. These items can be set into insert holders that are currently in use, facilitating finish machining.

Synthetic single-crystal diamond cutting tools

Compatible with brazing and soldering technology, the shape of these end mills makes it possible to machine multiple surfaces at once. These tools are primarily used for machining mirror surfaces on resin.

PCD (polycrystalline diamond) cutting tools

As performance in automotive component machining improves, better aluminum alloys and improved tool performance are also required. These tools provide consistent precision and a lifespan ten times longer than that of carbide tools.

CBN cutting tools

Most CBN cutting tools use inserts and bites. They are used for machining ferrous metals such as hardened steel, cast iron and sintered metal, and enable machining with greater speed and precision than carbide tools while also having a long lifespan.

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OSG Diamond Tool Co., Ltd.
Headquarters / Factory: 1572 Imazu, Imazu-cho, Takashima-City, Shiga 520-1621, Japan
Phone: +81-740-22-2415 Fax: +81-740-22-4178

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Notification of change of President

Information

Topics

Concept

The strongest tools, made from the Earth’s hardest mineral
Diamond tools that maximize performance in terms of surface roughness, lifespan and cost effectiveness
Opening up a new world of nanotechnology

The strongest tools, made from the Earth’s hardest mineral
Diamond tools that maximize performance in terms of surface roughness, lifespan and cost effectiveness
Opening up a new world of nanotechnology

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