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Yamamoto Metal Technos Co., Ltd. Yamamoto Metal Technos Co., Ltd.

Machining Technology

Precision Machining Technology Pursued Since Our Founding
From Prototyping and Modeling to Mass Production Machining



Hydraulic Equipment Parts

Hydraulic Equipment Parts

Medical Device Parts

Medical Device Parts

Machine Tool Parts

Machine Tool Parts

Energy Infrastructure Parts

Energy Infrastructure Parts

Motorcycle Parts

Motorcycle Parts

Semiconductor Equipment Parts

Semiconductor Equipment Parts

Since our founding, we have been committed to advancing “technology for cutting, polishing, and drilling metal,”
and have enhanced our precision machining technology. We deliver reliable products through a production management system capable of integrated orders for high-mix, low-volume to mass production machining,
and well-equipped machining facilities.
We cater to a wide range of fields including **hydraulic equipment parts, medical device parts, machine tool parts, and energy infrastructure parts**.

Supports High-Precision Complex Shape Machining and Micro-Machining

By incorporating the know-how gained from our unique **machining monitoring technology**, we also derive optimal machining conditions and develop tools. This allows us to achieve process integration and reduced machining time, and finish **micro-machining** and **complex shapes**—often deemed impossible—with high quality and high precision. Additionally, shapes like impellers that are difficult with 3-axis machining can be handled with simultaneous 5-axis control machining.

Simultaneous 5-axis machining

Simultaneous 5-Axis Machining

5-axis machining

We achieve process integration and reduced machining time even for shapes difficult with 3-axis machining. We also perform tool development by integrating our machining know-how, allowing us to finish shapes often deemed impossible with high quality and high precision. We also handle prototyping requests for milling **impellers, bladed wheels, blades, blisks**, etc., with short delivery times.

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Micro / Precision Machining

Micro / Precision Machining

Fine/precision machining

This is an enlarged view of a cross-hole with a **0.2mm tolerance** drilled in the extremely fragile material of a mechanical pencil lead.
We also have examples of high-precision small-diameter deep hole machining.

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Test Piece Production

Test Piece Production

Test piece production

High-precision test pieces leveraging our core technology of precision machining.
Types: Tensile compression, rotary bending fatigue test pieces, etc.
Materials: Various materials are possible

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FSW Tool Production

FSW Tool Production

FSW tool production

We can produce **FSW tools**. We accept orders tailored to the joining material and application.

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Battery Case, Inverter Case

FSW Prototyping/Mass Production Service

Friction Stir Welding

Machined and joined parts using **FSW (Friction Stir Welding)**.
We create various products related to EV adoption, such as **converter cases, battery cases, inverter cases, and cooling units**, using our machining technology.
We perform efficient joining and quality control with **MULTI INTELLIGENCE®i-stir**.

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3D Printer

3D Printer

3D Printer

We can handle the production of robot hands, pre-mass production prototype samples, various jigs, etc., using our in-house **3D printer**.

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Main Materials Handled

  • Carbon steel for machine structural use
  • Stainless steel (SUS303・SUS304・SUS316・SUS440・SUS630 etc)
  • Non-ferrous metals (Brass・Aluminum・Magnesium・Copper etc)
  • Alloy steel・Heat-resistant alloys (SNCM・Inconel・Hastelloy etc)
  • Composite materials (MMC・CFRP etc)
  • Others (Resin・CFRP・Ceramics etc)

※ We can handle all types of materials. Please inquire.

Applicable Treatments

  • Plating
  • Painting
  • Blackening
  • Blasting
  • Shot Peening
  • Heat treatment etc
  • PFAS (Teflon) Free Coating

※We can provide PFAS-free coating that achieves **low friction** and **high durability** without using **PFAS (Teflon)**, which is a concern for environmental impact.
　If you are looking for a new coating option in anticipation of future regulations, please feel free to contact us.

Main Equipment

  • NLX4000AY/1500-Pr　Φ500×1538　Lathe with Y-axis
  • NMV8000　Φ800　5-axis Machining Center
  • YBM Vi40　Φ400　5-axis Machining Center
  • NV4000DCG　700×450　Vertical Machining Center
  • CRYSTA-Apex S　X700,Y700,Z600　CNC Coordinate Measuring Machine
View Details about Equipment

Reliable Quality Assurance System
Backed by High Technology and
Years of Experience

The requests from our customers are all essential for a “safe and secure” society.
We deliver the best products with a perfect quality assurance system.
In addition to in-process inspections by the staff in charge, we perform inspections using the latest measuring instruments,
and manage precision at each stage.

All Product Dimensional Accuracy and
Geometric Tolerances are Measured

We measure and inspect all machined surfaces using a **CMM (Coordinate Measuring Machine)**, **roundness measuring instrument**, **surface roughness tester**, **universal projector**, etc. We measure the **dimensional accuracy** and **geometric tolerances** of all products listed in the design drawings down to the **micron level**, and deliver them with complete assurance of precision. Furthermore, we conduct particularly strict measurements on products machined during time slots when precision is prone to variation to maintain quality.

Measurement Data Recorded
on Inspection Certificate for All Products

The measurement data of machined parts is recorded on an **inspection certificate** for each item and attached upon delivery. We guarantee the highest level of quality. Upon customer request, **100% inspection** can be performed, and measurement data can be submitted. Moreover, these data histories are recorded and managed in our internal database, allowing for **traceability confirmation**.

Quality Assurance Certification・ISO9001
    Qualified Personnel    

Main National Certification Holders (Only 1st Grade equivalents listed)

                                                                                                                                                                                                                                                                                                             
Certification NameGrade / LevelNumber of People
National Trade Skill Test: MachiningMaster Grade Skill Technician14
National Trade Skill Test: Numerical Control Lathe1st Grade Skill Technician22
National Trade Skill Test: Numerical Control Milling Machine1st Grade Skill Technician27
National Trade Skill Test: Machining Center1st Grade Skill Technician5
National Trade Skill Test: Milling Machine1st Grade Skill Technician1
National Trade Skill Test: Electronic Equipment Assembly (Electronic Device Assembly Work)1st Grade Skill Technician1
National Trade Skill Test: Machine InspectionMaster Grade Skill Technician2
National Trade Skill Test: Machine Inspection1st Grade Skill Technician1
Certification Test: Material Testing Engineer (Fatigue Testing)1st Grade Skill Technician2
National Trade Skill Test: Machine Inspection Work1st Grade Skill Technician4
Certification Test: Non-Destructive Testing Engineer (Penetrant Testing)Level 12
National Test: Information Processing TechnicianApplied Information Technology Engineer Examination1


For example, we respond to these kinds of
requests.Request Order

  • Want to quickly confirm the performance of a prototype for new product development
  • Need to complete a prototype as soon as possible
  • Other companies refused because the delivery time is short
  • Other companies refused due to required precision or complex shape
  • The precision of the previous contractor has dropped
  • Currently using another company but looking for a new outsourced machining company, etc.

Flow until Order/RequestFlow

Consultations accepted by phone or email
Please feel free to contact us by phone or email first.
We will respond quickly.
step 01
We will conduct a hearing and listen to customer requests
Please send us your design drawings, and we will listen to your requests in detail.
After assessing feasibility, we will submit a quotation and inform you of the delivery time.
02
A representative knowledgeable about machining will visit upon request
Upon request, our representative will visit your location.
(However, visits may not be possible depending on the region, etc.)
We will propose solutions that lead to the best product for your company.
03
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