●Updated the precious metal information. [January 10, 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

As the new year begins, I would like to extend my heartfelt congratulations on your continued prosperity. I sincerely appreciate your exceptional support throughout the year. This is the STJ Group (Santelecom Japan, STJ Rentec). Now, I am pleased to announce that we will be opening our "Transceiver & Smartphone Rental Shop" simultaneously at three locations nationwide on January 26 (Monday)! ■ List of Services to be Offered - Same-day pickup/return of rental equipment - Usage explanations and demonstrations of rental equipment - Wireless solutions consultation desk - Mobile BPO service counter As a special promotion to celebrate the opening of the rental shop, we are currently running a special price campaign for picking up rental equipment at the shop! For more details, please contact us!

【Notice of Year-End and New Year Holidays】 Thank you very much for your continued support. Our company will be closed for the year-end and New Year holidays as follows: Holiday Period: Saturday, December 27, 2025 – Sunday, January 4, 2026 Please note that inquiries and orders received during the holiday period will be addressed sequentially starting from Monday, January 5, 2026. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to inform you about our participation in the IT Trend EXPO 2026 Spring. 《Exhibition Information》 With the concept of "New encounters will change tomorrow's work," one of the largest online exhibitions in the industry will be held. NTT TechnoCross will exhibit in the Human Resources Comprehensive category. We have prepared numerous discussions and sessions featuring special guests who are active on television, allowing even those who are usually busy to efficiently gather information on products and services related to IT and DX. Additionally, the first 10,000 participants will receive a 500 yen Amazon gift card. Please apply early. 《Exhibition Overview》 March 3 (Tuesday) to March 7 (Saturday), 2026, online (free: pre-registration required) 《Participation Application》 https://it.expo.it-trend.jp/key/opl7kgdj *Please apply (free) from the "Receive Ticket / Proceed to Participation Registration" link at the above URL.

The TV commercial "What Will You Do in the New Era?" featuring model and actress Akane Horita will begin airing on December 26, 2025. This work expresses the desire of Tokei Densan to respond to the diverse needs of various industries in today's society, where new technologies, such as the expansion of the AI market, are competing with each other, and to nurture and blossom our customers' futures. Please pay attention to Akane Horita, who is dressed in stylish outfits, listening to the concerns of the target audience and offering support. # CM Overview Title: "What Will You Do in the New Era?" (30 seconds / 15 seconds) CM URLs 30 seconds: https://youtu.be/y_lMs0HRj3w 15 seconds: https://youtu.be/egpzMfh8Kok

Thank you very much for your continued support. We would like to inform you that our company will be closed for the year-end and New Year holidays as follows: Year-end and New Year holiday period: December 27, 2025 (Saturday) to January 4, 2026 (Sunday) We apologize for any inconvenience this may cause and appreciate your understanding. *Please note that inquiries made through our website will also be responded to after January 5, 2026 (Monday).