東洋精機産業 List of Products and Services

The "gundrill" is a type of drill specialized for deep hole machining and fine hole machining. When using a regular drill for deep hole machining, the cutting chips can clog inside, damaging the product or causing the drill to bite, which in the worst case can lead to the breakage of both the drill and the product. The gundrill processes by spraying cutting oil from the tip, blowing away the chips while machining. This allows for precise deep hole drilling. We can handle not only single-step gundrill machining but also a total solution from material procurement to lathe machining, machining, grinding, heat treatment, lapping, honing, and assembly. *For more details, please download the PDF or feel free to contact us.

• Processing Contract

"Flat grinding" refers to the process of grinding and machining the flat surfaces of workpieces using grinding wheels. Leave it to Toyo Seiki Industry, which offers integrated production from lathe machining, machining, heat treatment, to grinding. We can accommodate small to medium lot sizes. Since we have our own heat treatment facility, how about combining heat treatment with your order? This eliminates time loss due to logistics of workpieces, allowing for reduced lead times and costs. We also have lathes and machining capabilities, so we can handle all machining processes from before to after heat treatment. Please feel free to contact us for more information. [Grinding + α] - We have our own heat treatment facility. - We can eliminate time loss due to logistics of workpieces, allowing for reduced lead times and costs. - With lathes and machining capabilities, we can handle all machining processes from before to after heat treatment. *For more details, please refer to the PDF document or feel free to contact us.

• Processing Contract

"I would like to make corrections because the positional accuracy was not sufficient in the pre-processing." "Achieving precision in fit tolerances is difficult with a lathe." Are you having trouble with such issues? With our NC internal surface grinding machines, both 4-axis and 2-axis, we can perform simultaneous processing with one chucking, allowing for high-precision machining of geometric tolerances (parallelism, perpendicularity, concentricity). We can mount up to four grinding wheels, enabling more complex grinding with one chucking. Furthermore, since we have our own heat treatment facility, we can also handle heat treatment together. This eliminates time loss due to logistics of workpieces and allows us to compress delivery times and costs. We also have lathes and machining capabilities, so we can handle all processes before and after heat treatment. We have a proven track record of processing various materials such as S45C, S25C, SKD, SCM, SACM, SUS, and castings. Please feel free to contact us. *For more details, please refer to the PDF document or feel free to reach out to us.

• Contract manufacturing

Our company specializes in precision machining of parts with geometric tolerance requirements and also handles sub-assembly. We can provide a total solution from material procurement to lathe processing, gun drilling, machining, grinding, heat treatment, lapping, honing, and assembly. *Please refer to the equipment list for details. 【Benefits of Integrated Production】 ● Reducing the burden of outsourcing management by consolidating external suppliers to one for each process ● Reducing transportation costs and time between processes 【Features】 ■ We have a "Precision Machining Department" and a "Special Heat Treatment Department," achieving high quality and short delivery times with a highly integrated system. ■ We excel in processing round materials such as spindles and cylinders. ■ Single-process requests, such as "heat treatment only," are also welcome. ■ Heat treatment can accommodate small lots and next-day shipping (with some exceptions). ■ We also conduct inspection measurements and pressure tests in-house. *For more details, please refer to the PDF. Feel free to contact us with any inquiries.

• Processing Contract

Have you been troubled by issues such as 'the surface of the workpiece became rough after quenching,' 'due to strict tolerances, machining with just a lathe is difficult,' or 'there are not many places that accept small lot orders'? In such cases, please leave it to Toyo Seiki Sangyo, which offers integrated production from lathe machining, machining, heat treatment, to grinding. We have 5 general-purpose cylindrical grinding machines and 6 NC cylindrical grinding machines, capable of handling small to medium lot sizes. Our machining range is from φ4 to 300, with lengths from 15mm to 700mm, and we have qualified personnel for first and second-class cylindrical grinding operations. Additionally, since we have our own heat treatment facility, how about combining heat treatment with your order? This can eliminate time loss due to logistics of the workpieces and compress delivery times and costs. We also have lathes and machining available, so we can handle all processes before and after heat treatment. Please contact us once. *For more details, please refer to the PDF document or feel free to reach out to us.

• Processing Contract
• Contract manufacturing

We would like to introduce a machining case for the "intake valve for marine diesel engine fuel pumps." Starting with lathe processing that leaves the minimum grinding allowance, we performed high-precision inner and outer diameter grinding, followed by hand polishing and seat fitting by skilled craftsmen, as well as assembly adjustments. We have reduced time loss due to logistics and valve rod distortion prevention and correction through heat treatment at our own factory. 【Processing Steps】 ■ Valve Rod - Lathe / Heat Treatment (Vacuum Quenching) / Outer Diameter Grinding ■ Casing Body - Lathe / Machining Center / Heat Treatment (Carburizing Quenching) / Inner Diameter Grinding / Outer Diameter Grinding - Inner Diameter Honing / End Face Lap Finishing ■ Conical Ring - Lathe / Heat Treatment (Carburizing Quenching) / Wire Cutting (2-part) ■ Assembly - Casing Body and Valve Rod Seat Fitting / Assembly *For more details, please refer to the PDF document or feel free to contact us.

• Other pumps

Unlike air purifiers that remove floating foreign substances with filters, ozone directly inactivates bacteria and viruses. It also decomposes the components of odors to purify the air. It is effective not only against airborne bacteria and viruses and odor components but also against surviving viruses that adhere to surfaces like doorknobs. 1. Ozone has been proven effective in inactivating the coronavirus. 2. It decomposes odor components, making it useful in various businesses. 3. It is also effective for pollen countermeasures. Our company, which has a long history of manufacturing commercial ozone generators in Japan, is now offering compact low-concentration ozone devices at affordable prices for businesses such as hospitals, nursing facilities, and restaurants. *For more details, please download the PDF or feel free to contact us.

• Air purifiers

**About Salt Baths** A salt solution is created by heating and melting chemicals such as potassium chloride, sodium chloride, and sodium nitrite. This is a quenching method where products are heated in a salt bath quenching tank filled with salt solution and then rapidly cooled with low-temperature salt solution. The salt solution has superior heat transfer compared to gases, allowing heat to be evenly transmitted to the object. Since the salt solution directly contacts the object, it minimizes cooling unevenness during cooling, leading to stabilization of the structure and preventing risks of hardness unevenness, distortion, and cracking. **Our Features** We perform quenching by heating above 800°C in a pit-type carburizing furnace and rapidly cooling in a salt bath at 170°C to 180°C. By rapidly cooling, even materials like S45C, which are difficult to harden, achieve higher hardness compared to oil cooling. Additionally, as mentioned above, this reduces the risks of hardness unevenness, distortion, and cracking. **Materials Suitable for Salt Baths** Carbon steel (S45C, S50C) Carbon tool steel (SK2, SK4, SK5, SK6, SK7) Structural steel (SS material, SCM435) Bearing steel (SUJ2), etc. *For more details, please refer to the PDF or feel free to contact us.*

• others

Our company has a "Precision Machining Division" and a "Special Heat Treatment Division," and we carry out processing with a highly advanced integrated production system. We are fully equipped with heat treatment facilities, so we can handle all processes including quenching and tempering (hardening), hardening, annealing, salt bath quenching, carburizing, oxidation-free quenching, and vacuum quenching. 【Features】 ■ Short delivery times We ship the next day for orders received by 15:00*1 ■ Capable of small lot production We can perform quenching even for a single pin ■ Professional precision machining before and after heat treatment NC lathe, machining center, gun drilling, grinding, and lapping finish *For more details, please refer to the PDF or feel free to contact us. *Factory tours are also welcome.

• Processing Contract

Our company has a "Precision Machining Division" and a "Special Heat Treatment Division," enabling us to achieve high-quality and short delivery time production through a highly integrated production system. <Processing Example> ■Material: SCM420 (Chromium Molybdenum Steel) ■Dimensions: φ122×53.5H ■Processes: Machining, burr removal by electrolysis, carburizing and quenching, surface grinding, internal polishing, lapping finish ■Remarks: Mass-produced product *For more details, please refer to the PDF or feel free to contact us. *Factory tours are also welcome.

• Processing Contract

Our company has a "Precision Machining Division" and a "Special Heat Treatment Division," and we carry out processing with a highly advanced integrated production system. We offer a full lineup of services including material procurement, expansion processing, lathe machining, machining, wire cutting, heat treatment, tempering, carburizing hardening, vacuum hardening, nitriding, cylindrical grinding, internal diameter grinding, gun drilling, honing, inspection, assembly, and lapping finish, ensuring high quality and short delivery times. If you are a purchasing manager feeling burdened by outsourcing management, please feel free to consult with us. *For more details, please refer to the PDF or feel free to contact us. *Factory tours are also welcome.

• Other machine elements

Toyo Seiki Sangyo Co., Ltd. is a company that manufactures and assembles precision machine parts and marine internal combustion engine parts, as well as conducts metal heat treatment. We possess a precision machining division and a special heat treatment division, achieving high-quality and short delivery time production through an advanced integrated production system. Additionally, we have established a temperature and humidity-controlled inspection room to ensure a quality control system that prevents defective products from being sent to the subsequent processes. 【Business Description】 ■ Manufacturing and assembly of precision machine parts and marine internal combustion engine parts, as well as metal heat treatment. *For more details, please refer to our catalog or feel free to contact us.

• Processing Contract