●Updated the precious metal information. [June 2018]

Compared to extruded and drawn materials, there is less variation in outer diameter and reduced bending of the material! We have a large inventory and can accommodate short delivery times!

"Centerless grinding" is a processing method for machining cylindrical materials that does not require center support, allowing for the processing of long materials, pipes, and machined products without selecting specific processing machines. It excels in outer diameter precision, roundness, and straightness, resulting in high-precision materials. We possess a variety of inspection equipment, including bending inspection devices and micrometers, so customer-side material inspection is unnecessary. Additionally, to deliver high precision to our customers, we offer four types of packaging methods, including support packaging. *We have a rich inventory, including A7075B-T6511 and A6061B-T6 available!* 【Features】 ■ Improved yield ■ Increased production efficiency ■ Can be handled with only sampling inspections ■ Supports shortened delivery times *For more details, please refer to our catalog or feel free to contact us.*

• Other processing machines
• Processing Contract
• aluminum

We will strongly support manufacturing with a competitive edge through non-ferrous metal materials and processing technologies!

Kyoei Metal Co., Ltd. is based on the field of non-ferrous metal materials and their processing technology, embodying high value-added manufacturing services that satisfy our customers. We will derive optimal solutions in all aspects, including functionality, quality, cost, and management, for the requirements of the "users" regarding non-ferrous metal processed parts. By achieving a balance of extremely refined product and service quality, we strongly support our customers' competitive manufacturing. 【Business Description】 ■ Sales of non-ferrous metal materials and their processed parts *For more details, please refer to our catalog or feel free to contact us.

• Other processing machines
• Processing Contract
• aluminum

Case study of aluminum centerless adoption by an automotive parts manufacturer.

We would like to introduce a case study of an automotive parts manufacturer that has adopted our unique technology, "Centerless Grinding." At Company T, there was variability within the outer diameter dimension tolerances, and they were struggling with material layer separation work before processing. However, since adopting "Aluminum Centerless," they no longer need to perform material layer separation work for thicker and thinner materials, and they are now able to adequately handle inspections through sampling. As a result, work efficiency has significantly improved, and the yield of the processing has remarkably enhanced. [Overview] ■ Automotive parts manufacturer ■ Company T, automotive air conditioning parts ■ <Target part> A6061B-T6 φ19 *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines
• Processing Contract
• aluminum

Case study of aluminum centerless adoption by a medical manufacturer.

We will introduce a case study of a medical manufacturer that adopted our unique technology, "Centerless Grinding." Company M was forced to conduct 100% inspection due to material wobbling and lack of roundness, but the adoption of "Aluminum Centerless" significantly improved the processing yield. Additionally, being able to place a consistent order from material procurement to centerless processing is also an advantage. 【Overview】 ■ Medical Manufacturer ■ Company M Dental Medical Devices ■ <Target Parts> A6061B-T6 φ9–11 *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines
• Processing Contract
• aluminum

Case study of aluminum centerless adoption by an industrial machinery manufacturer.

We would like to introduce a case study of an industrial machinery manufacturer that has adopted our unique technology, "centerless grinding." At Company P, even when outsourcing centerless processing to another vendor, aluminum materials were often avoided due to the grinding wheel becoming clogged. However, Hashinaga Metal specializes in aluminum, making it easier to request services, and we received high praise for the finishing quality in terms of outer diameter, straightness, and roundness. Additionally, we have included a case study of machine parts, pins, and shafts from industrial machinery manufacturer Company S. [Overview (Company P)] ■ Industrial Machinery Manufacturer ■ Company P Machine Parts ■ <Target Parts> A7075B-T6511 φ20 *For more details, please refer to the PDF document or feel free to contact us.

• Other processing machines
• Processing Contract
• aluminum

Is the aluminum material you are currently using really ◎? It is ideal for moving spindle CNC lathes, and its effectiveness is tremendous for parts with strict requirements for roundness and cylindricity.

Centerless grinding is a processing method for machining cylindrical materials. It is called "centerless" because grinding is performed by passing the material between two rotating grinding wheels without fixing the workpiece at the center. It is characterized by superior dimensional accuracy, surface roughness, and roundness compared to drawn materials. 【Application Example】 A2017B-T3: φ2.1～φ3.0×2500mm (2000mm) *After centerless processing Outer Diameter Tolerance: +0 -0.004 Roundness: 2μm Application: Two-wheeled vehicle carburetor parts

• aluminum

Is the aluminum material you are currently using really ◎? It is ideal for moving spindle CNC lathes, and its effectiveness is tremendous for parts with strict requirements for roundness and cylindricity.

Centerless grinding is a machining method used to process cylindrical materials. It is called "centerless" because grinding is performed without fixing the workpiece at the center, by passing it between two rotating grinding wheels. It is characterized by superior dimensional accuracy, surface roughness, and roundness compared to drawn materials. 【Adoption Example】 A6061B-T6: φ19×2500mm (Extruded rod) ⇒ φ18.9×2500mm (after centerless processing) Outer diameter tolerance: (±0.06) ⇒ (+0 -0.02) = By performing centerless grinding, a dramatic reduction in defect rates was observed in cutting processes. ⇒ (By performing correction processing, it becomes possible to improve surface accuracy with minimal cutting allowance.)

• aluminum

Is the aluminum material you are currently using really ◎? It is ideal for moving spindle CNC lathes, and its effectiveness is tremendous for parts requiring strict roundness and cylindricity.

Centerless grinding is a processing method used for machining cylindrical materials. It is called "centerless" because grinding is performed by passing the workpiece between two rotating grinding wheels without fixing it at the center. It is characterized by superior dimensional accuracy, surface roughness, and roundness compared to drawn materials. 【Adoption Example】 A6061B-T8: φ6.5～φ14×2500mm Outer Diameter Tolerance: +0 -0.006 Bending Tolerance: 4μm/100mm or less Surface Roughness: 3.2S or less Application: Automotive transmission parts

• aluminum

No need for material inspection before use or for stratification work with thicker or thinner layers! Significantly improve processing yield!

【Feedback from Medical Manufacturer M】 ■Issues: When processing the drawn material as is, the material would wobble, causing misalignment in the product's axis, which was problematic. ■Suggestion: Use centerless material. ■The need for material inspection before use and for sorting into thicker and thinner layers has been eliminated, significantly improving processing yield. For more details, please download the catalog or contact us.

• aluminum

JOHNAN has released a video that clearly explains the implementation technology for stretchable films, which are expected to be utilized in wearable devices and medical equipment. In the video, you can see how the film, which has excellent elasticity, stretches and contracts. Please check our high technological capabilities and the flexible characteristics that are useful for product development. We hope this will help you generate new ideas in product development. ▼You can watch the video here [Link to the implementation page for stretchable films] https://www.johnan.com/dms/mounting/filmdevic/stretchable/

Thank you very much for your continued support. We sincerely apologize for the inconvenience, but our company will be closed for summer vacation during the following period. 【Closure Period】 From Saturday, August 9, 2025, to Thursday, August 14, 2025. We will resume normal business operations on Friday, August 15. We appreciate your understanding during this time and apologize for any inconvenience caused.

"Because it's an invisible place, we won't overlook it." Japan's climate is characterized by high temperatures and humidity, and particularly after typhoons and heavy rains, the conditions can be harsh for homes. It's not just the roofs and exterior walls that are affected by rain and wind. The area beneath the floor is actually the most susceptible and often overlooked point. This time, we will explain the "checkpoints for under the floor" that should be confirmed after a typhoon or heavy rain, the "responses" if abnormalities are found, and measures for preventing recurrence. [Table of Contents] ■ Why is underfloor checking necessary? ■ Checkpoints to confirm after a typhoon or heavy rain ■ Responses when damage is discovered ■ Points for preventing recurrence ■ Suggestions from Seihou Products ■ Summary Please be sure to read the [related materials] and [related links]. ↓ ↓ ↓

Explosion-proof motors available in stock We will deliver within 7 days to meet your delivery schedule. 【What is an explosion-proof motor?】 In factories and plants, flammable gases and vapors are present. When these mix with air and come into contact with an ignition source, an explosion or fire can occur. This motor is designed with measures to eliminate such ignition sources. 【Available stock models】 ■ Pressure-resistant explosion-proof motors, explosion-proof grade d2G4 - Foot-mounted type, output 0.4 to 3.7 kW, 4 poles - Flange type, output 0.4 to 0.75 kW, 4 poles ■ Increased safety explosion-proof motors, explosion-proof grade eG3 - Foot-mounted type, output 0.2 to 0.75 kW, 2 and 4 poles - Flange type, output 0.2 to 0.75 kW, 2 and 4 poles

As part of the "Hometown Ibara Future Creation Human Resource Development Project," we welcomed local elementary and middle school students to the special summer program "Ibara Job Exploration Tour 2025," a collaboration between the Ibara City Chamber of Commerce and the Corporate Branding Committee. We conducted a presentation that clearly and enjoyably introduced how our technology supports society, allowing the children to learn about the appeal of manufacturing and the significance of working while interacting with actual devices and products. Through this initiative, we hope to deepen our connection with the community and nurture the curiosity of the children who will carry the future. We sincerely thank everyone who participated, as well as all those involved in planning and organizing the event.