大和製砥所 List of Products and Services

The term "oil stone" comes from the practice of using oil, such as kerosene or grinding oil, which is absorbed into the stone. Oil stones are made from A-grade abrasive particles, have a wide range of particle sizes, possess strength, and are less prone to shape distortion. Our company manufactures and sells various shapes of stick-type oil stones in addition to the common "rectangular" shape, which has been well received by users for enabling efficient work according to different applications. 【Main Uses】 Square: Deburring of grooves, bottom surface polishing Triangular/Rhombic: Deburring of grooves, polishing of groove entrances Round/Half-Round/Elliptical: Internal surface polishing of hole diameters Pointed: Polishing of sharp corners We are currently offering free samples, so please feel free to contact us for more details!! ↓↓↓ ---------------------------------- Yamato Seito Co., Ltd. Sales Department 5-1613 Hata, Kashiba City, Nara Prefecture 639-0245 TEL: 0745-77-2955 FAX: 0745-78-0667 Email: yamato@yamatoseito.co.jp URL: http://www.yamatoseito.co.jp

• Grindstone

The term "oil stone" comes from the practice of using oil, such as kerosene or grinding oil, which is absorbed into the stone. Oil stones consist of A-grade abrasive particles, have a wide range of particle sizes, and are characterized by their strength and resistance to shape distortion. Our company manufactures and sells various shapes of stick-type oil stones in addition to the common rectangular shape, and we have received positive feedback from users for their efficiency in various applications. 【Main Uses】 Square: Deburring grooves, surface polishing Triangle/Rhombus: Polishing groove entrances Round/Half-round/Elliptical: Internal polishing of hole diameters Point: Polishing sharp corners We are currently offering free samples, so please feel free to contact us for more details!! ↓↓↓ ---------------------------------- Yamato Seito Co., Ltd. Sales Department 〒639-0245 1613 Hata 5-chome, Kashiba City, Nara Prefecture TEL: 0745-77-2955 FAX: 0745-78-0667 Email: yamato@yamatoseito.co.jp URL: http://www.yamatoseito.co.jp

• Grindstone

The term "oil stone" comes from the practice of using oil, such as kerosene or grinding oil, to soak into the stone. Oil stones are made from A-grade abrasive particles, have a wide range of grit sizes, and possess strength that makes them resistant to shape distortion. Our company manufactures and sells various shapes of stick-type oil stones, in addition to the common "rectangular" shape, which have been well received by users for their efficiency in various applications. 【Main Uses】 Square: Deburring grooves, bottom surface polishing Triangle/Rhombus: Deburring grooves, polishing groove entrances Round/Half-Round/Elliptical: Internal surface polishing of hole diameters Point: Polishing sharp corners We are currently offering free samples, so please feel free to contact us for more details!! ↓↓↓ ---------------------------------- Yamato Seito Co., Ltd. Sales Department 5-1613 Hata, Kashiba City, Nara Prefecture 639-0245 TEL: 0745-77-2955 FAX: 0745-78-0667 Email: yamato@yamatoseito.co.jp URL: http://www.yamatoseito.co.jp

• Grindstone

"Elm" is an FM grinding stone developed to facilitate the processing of high-quality finishing surfaces from general metals to non-ferrous metals. It is available in three grit sizes: 80, 120, and 220. It can be used for various applications such as removing discoloration after welding, grinding and polishing uneven surfaces, curves, and R surfaces, as well as simplifying and standardizing the pre-process for mirror finishing. Additionally, we offer "Migai Taro," which can easily remove rust and dirt from machines, tools, and blades used in factories. 【Features of Elm】 - No clogging or adhesion of chips to the grinding stone surface, resulting in a stable finishing surface. - Elasticity allows it to conform easily to the shape of curved workpieces. - Efficient grinding and polishing processes can be standardized. - No dust dispersion during work. *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

CHERRY OIL is a 100% synthetic oil that can be used with oil stones. Its stable viscosity maintains the sharpness and lubrication of the stone while preventing deformation and clogging.

• Grindstone

Our company has been providing Japanese-made oil stones as oil-filled OIL STONE, but in pursuit of higher quality products, we have aimed to better reflect the voices of our users, evolve the know-how of traditional oil stones, and pursue high quality, leading to the birth of "Sakura."

• Grindstone

Generally, there are few artificial grinding stones used for high-precision grinding in manual polishing work, and natural stones such as Arkansas stones are sometimes used. Natural stones are difficult to obtain, expensive, and in recent years, high-quality ones have become harder to find, with fewer imports. Therefore, our company has been working on the development of high-precision grinding stones that can be supplied at a low cost and in a stable manner. The new product "Yamabuki" uses tough alumina-based abrasive grains, has a particle size equivalent to #6000, and is a groundbreaking product that has wax impregnated into a vitrified bond stone that has been fired at high temperatures. (Note) Due to being a flammable solid, please ensure that the grinding stone is dried naturally. It may cause a fire.

• Grindstone

We would like to introduce the "Ultra-Finish Grinding Stone" handled by Daiwa Seito Co., Ltd. It can be used for the outer circumference of rollers incorporated in cylindrical roller bearings and the outer circumference of engine camshafts. The through-feed type ultra-finish grinder allows for precision grinding simply by passing different grit grinding stones for rough, medium, and final finishing, enabling mass production of precision parts. 【Features】 - The through-feed type ultra-finish grinder enables precision grinding just by passing different grit grinding stones. - Mass production of precision parts is possible. - Due to vibration and rotational motion, there is minimal alteration of the surface layer of the workpiece. *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

This product is a rubber-adjusted grinding stone that has excellent wear resistance compared to the standard A control grinding stone. Therefore, it is possible to significantly improve the dressing interval. With stable quality, our zirconia control exhibits inert and long-lasting stable performance against oil-based and water-soluble grinding fluids due to the use of a special bonding agent primarily made of natural rubber. 【Features】 - Improved machining accuracy and roundness - Suppresses the slipping phenomenon of workpieces that is likely to occur with different diameter cylindrical bodies - Can provide uniform constant circular motion to the workpiece - Exhibits inert and long-lasting stable performance against oil-based and water-soluble grinding fluids - Quality guarantee for 3 years *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

This product is a precision cutting grinding wheel characterized by excellent thickness accuracy, good cutting performance, and a long lifespan. Thanks to the special resin bond manufacturing process, it can be used in both wet and dry conditions, but it particularly excels in wet applications. We offer a wide variety of types, including different abrasive materials (A type, C type), grain sizes, and bond strengths. 【Features】 ■ Excellent thickness accuracy, good cutting performance, and long lifespan ■ Usable in both wet and dry conditions due to the special resin bond manufacturing process ■ Particularly effective in wet applications ■ A diverse range of types available, including different abrasive materials (A type, C type), grain sizes, and bond strengths *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

Daiwa Seito Co., Ltd. is a manufacturer specializing in grinding stones, producing a variety of grinding stones for different applications. We handle numerous types of grinding stones, including oil stones, rubber control stones, diamond paste, and hard Arkansas stones. We inherit traditional techniques, evolve with the times, and contribute to the manufacturing of tomorrow. 【Products (excerpt)】 ■ Oil stones ■ Mold grinding stones ■ Super finishing stones ■ Honing stones ■ Rubber control stones *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

This product features a cross-hatch pattern created by the rotation and reciprocating motion of honing, which serves as an oil reservoir during use, enhancing lubrication and sliding properties. Compared to processing methods like internal grinding, it has significantly higher grinding capability and efficiency. The high surface precision of the finished surface has minimal machining alteration layers and thermal alteration layers, resulting in excellent wear resistance. 【Features】 - Improves lubrication and sliding properties - Significantly higher grinding capability and efficiency compared to processing methods like internal grinding - Can be processed even in small diameter and long lengths - High precision processing allows for easy management of surface precision and dimensional accuracy (cylindricity, roundness) even with simple machine structures - Minimal machining alteration layers and thermal alteration layers, providing excellent wear resistance *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

"Diamond Paste WITH" is an ideal oil-based paste that pursues workability, grinding performance, and economic efficiency. It is capable of achieving a stable finish up to a super mirror surface. Through the pursuit of polishing power, it completely eliminates coloring agents and chemicals that could have adverse effects, ensuring stability even with non-ferrous metals. 【Features】 ■ Carefully selected diamond abrasives are uniformly dispersed through a special manufacturing process, providing stable polishing power. ■ The paste has a very low viscosity, resulting in excellent workability. ■ Even when diluted with a dedicated thinner, there is no separation or detachment of the diamond abrasives (please use the dedicated thinner: A-602). *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

We would like to introduce our high-quality sharpening stones. The "Futakamito" is recommended for those who are struggling with issues such as "recently, it has become difficult to obtain good quality natural sharpening stones for knife sharpening" and "I don't know which precision grinding stone to use by hand." The "Arkansas Stone" is a natural sharpening stone sourced from Arkansas, USA, and is used for sharpening knives and precision grinding. [Features] <Futakamito> ■ Custom sizes available to suit your needs - Grit #2000: Medium finish (100×25×13, 4 inches) - Grit #4000: Finish (150×50×25, 6 inches) - Grit #6000: Precision finish (205×50×25, 8 inches) - Grit #8000: Final finish (205×75×25, for knives) *For more details, please refer to the PDF document or feel free to contact us.

• Grindstone

In recent years, the mold industry has made remarkable progress due to the development and application of new materials and advancements in processing technology. Daiwa Seito has combined its long-standing experience and technology as a grinding wheel manufacturer to complete the 'YH Series' grinding and polishing wheels that respond to the advancements in the mold industry. We invite you to try them out for reduced processing time and improved accuracy. Additionally, we offer a wide range of products, including ceramic grinding wheels "WA" using WA abrasive grains, as well as "C" and "PA" among many others. 【YH Series Lineup】 ■ YHZ: A ceramic grinding wheel developed for medium finishing and finishing. ■ YHB: A rough to medium finishing wheel impregnated with general-purpose phenolic resin on WA grinding wheel. ■ YHB-T: The strongest product in the YH series. ■ YTM: A resin-based grinding wheel developed for the final finishing and mirror finishing of molds. ■ YHA: A ceramic grinding wheel that retains the advantages of WA grinding wheels while incorporating wear resistance. ■ YHS: A grinding wheel impregnated with sulfur on WA grinding wheel. ■ YHF: A grinding wheel made by solidifying GC abrasive grains with a phenolic resin bond. *For more details, please refer to the PDF materials or feel free to contact us.

• Grindstone

It can polish hard workpieces that are difficult to process even with general abrasives (WA or GC). Since the grinding stone is attached to the handle, it won't break easily. The structure is designed to allow for easy application of force when hand polishing. The hand wrapper is mainly used for tool correction in metalworking shops, but it can also be used at home for sharpening knives, carving tools, and for DIY projects. *For more details, please download the PDF or feel free to contact us.

• Grindstone

"CHERRY OIL STONE" is a vitrified oil stone made primarily from A abrasive particles (Al2O3). In the field of hand polishing, it is the most versatile and is widely used for polishing, sharpening, and deburring metals such as molds and cutting tools, as well as non-metals like glass and gemstones. In addition to standard products, we also offer high-quality "Sakura" and natural stone Alcanthus. *For more details, please download the PDF or feel free to contact us.

• Grindstone