Yoshida Seiko Co., Ltd
Most recent update: 2025-07-01
PR message
2022 marks the 70th anniversary of our company's founding. We would like to take this opportunity to express our heartfelt gratitude for all of your help, cooperation, and efforts.
Since our founding, we have strived to be a "group of manufacturing professionals" by focusing only on machining.
We will continue to work hard in a cooperative spirit to create a company that is even more loved and respected than before, with the goal of fast adapting to changing times and becoming a company for the next 100 years.
[Machining Capacity]( Tsubata Plant)
Lathe: Work size φ3 to φ65, total length 1,800L or less (processing from bar material)
Work size φ3 to φ300, total length 2,000L or less (processing from cut material)
Machining (milling): Work size 1,000 x 500 or less (vertical machining center)
Work size □400 or less (horizontal machining center, 5-face machining center)
Integrated services including gear cutting, heat treatment, grinding, and surface treatment in cooperation with Kyoei Co.
[Contract processing] (Osaka Office)
We offer comprehensive services such as sheet metal stamping, drawing, injection molding, can welding, and materials (lost wax, etc.).
In cooperation with the Osaka Sales Office, we handle everything from materials, machining, various contract processing (sheet metal, press, injection molding, etc.), to assembly. As "manufacturing evacuation center" we contribute to minimize management expenses for our customers by providing a single point of contact and products/services that meet a variety of needs.
We respond to customer needs quickly and efficiently with vertical and horizontal machining centers.
[Detail]
Horizontal 5-face processing machine
[Industry]
Construction machinery parts
Automotive and motorcycle parts
Textile machine parts
Agricultural equipment parts
Hydraulic parts
Pneumatic parts
Machine tool parts
Semiconductor parts
Medical device parts
Food machinery parts etc.
[Materials]
Iron, aluminum, copper, brass, cast iron, stainless steel, heat-resistant steel, resin, etc.
[Material size]
MAX□300×300
[Number of lots]
50 to 1000 (monthly production)
[Accuracy]
1/1,000
[Feature]
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
[Detail]
・Hemostatic forceps for transnasal endoscopy (medical equipment) used in endoscopic surgery
・Material is difficult-to-cut SUS630 (stainless steel)
・Manufacturing with a simultaneous 5-axis multitasking machine
・Extremely small complicated shape parts with a diameter of 2 mm or less
・Available from prototype to mass production
[Industry]
Medical device related
[Material]
SUS630
[Material size]
φ2×12 etc.
[Number of lots]
1 to 1000 (monthly production)
[Accuracy]
1/1,000
[Processing method]
5-axis combined NC lathe
[Feature]
This product is a precision part made of stainless steel. The shape is complicated and there is a strict requirement for a tolerance of 0.01.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd. Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
[Detail]
These are parts of hydraulic unit.
Tolerance: ±0.015
Iron SUM435 tempered material in mass production
[Industry]
Hydraulic related
[Material]
SUM435 refining material
[Material size]
φ30×50 φ30×25 φ22×48
[Number of lots]
300-1000 (monthly production)
[Accuracy]
1/100
[Processing method]
NC lathe, NC combined lathe, plating, assembly
[Feature]
This product is a hydraulic-related precision part made of SCM435 refining material. The shape is complicated and there is a strict requirement for a tolerance of 0.01.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
As a factory specializing in the processing of mechanical parts, Yoshida Seiko Co., Ltd. handles construction machinery, agricultural machinery, textile machinery, motorcycles, hydraulic and pneumatic components, and also handles iron, aluminum, copper, brass, cast iron, stainless steel, etc. regardless of material. We can handle a variety of materials, including heat-resistant steel.
Please feel free to contact us, even if you are working in a new field that you have never worked in before.
[Industry]
Construction machinery parts
Automobile and motorcycle parts
Textile machine parts
Agricultural machinery parts
Hydraulic parts
Pneumatic parts
Machine tool parts
Semiconductor parts
Medical device parts
Food machinery parts etc.
[Material]
Iron, aluminum, copper, brass, cast iron, stainless steel, heat-resistant steel, resin, etc.
[Material size]
・Lathe/Compound machine
Outer diameter φ2 to φ65, total length 1800L or less (processing from bar material)
Outer diameter φ2~φ300, total length 2000L or less (processing from cut material)
*Varies depending on material and shape
・Vertical machining
1000mm x 500mm or less
Horizontal machining/Five-face machining
□400 or less
[Number of lots]
From prototyping to mass production (shapes vary)
[Accuracy]
1/100
[Processing facilities]
NC lathe, combined lathe, NC combined automatic lathe, NC double-headed milling machine, horizontal machining, five-face machining, vertical machining, wire electric discharge machine, honing machine, rolling machine, drilling machine,
surface grinder, general-purpose lathe, general-purpose milling machine, etc.
[Feature]
This product is a hydraulic-related precision part made of SCM435 refining material. The shape is complicated and there is a strict requirement for a tolerance of 0.01.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
[Detail]
This is a part of the air conditioner hydraulic unit.
Tolerance: ±0.01
complex shape cast iron mass production
[Industry]
Air conditioner related
[Material]
FC300 (dense bar)
[Material size]
Thickness 50.5x93x98
[Number of lots]
50-300 (monthly production)
[Accuracy]
1/100
[Processing method]
NC double-headed milling machine, horizontal machining, honing machine
[Feature]
This product is a hydraulic precision part for FC300. The shape is complicated and there is a strict requirement for a tolerance of 0.01.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
[Detail]
Parts for pneumatic equipment.
Tolerance: 0.01
Complex shape aluminum, mass production
[Industry]
Pneumatic equipment related
[Material]
A6061 (aluminum)
[Material size]
φ39×38
[Number of lots]
100-500 (monthly production)
[Accuracy]
1/1,000
[Processing method]
Combined lathe hard alumite wrap
[Feature]
This product is a precision part related to air pressure of A6061 material. The inner diameter shape is complicated, and the longitudinal direction is elliptical (inner diameter) with respect to the center H7 hole.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
[Detail]
Parts of construction machinery.
2 jaw chuck oval shape SS400 gantry loader, mass production
[Industry]
Construction machinery
[Material]
SS400 Thermal cutting product
[Material size]
Thickness 22x50x103
[Number of lots]
100-500 (monthly production)
[Accuracy]
1/100
[Processing method]
NC lathe, peripheral deburring, vertical machining, drilling machine
[Feature]
This product uses SS400 thermal cutting material. It is mass-produced using a gantry-loader specification facility with a 2 jaw chuck.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higashi-Osaka-shi, Osaka, 577-0053
Website: http://www.yoshida-seiko.jp
Control number : Construction machine parts-0001
[Detail]
Air valve parts for construction machinery.
Tolerance: ±0.01
Coaxial: 0.01
iron, mass production
[Industry]
Construction machinery related
[Material]
Iron SUM
[Material size]
φ36×68
[Number of lots]
100-500 (monthly production)
[Accuracy]
1/1,000
[Processing method]
NC combined lathe, plating (trivalent chromate)
[Feature]
This product is an air valve part for construction machinery.
There is a tapered seat surface with a diameter of φ4 at the back of the inner diameter of about 40 mm.
There is also a small diameter screw and a small diameter H7 in front of it. This is a product with strict requirements for surface roughness and coaxiality.
We have dealt with a wide range of products for many years, from small lots to 10,000 units, from loose precision to strict precision accuracy, including processed items with complicated shapes.
If you are in difficulties, please contact us (Tsubata Factory), the manufacturing evacuation center!
Please visit our website for more information about our products and processing equipment.
Yoshida Seiko Co., Ltd.
Tsubata Factory
TEL: +8176-288-7001 FAX: +8176-288-7007
E-mail: info@yoshida-seiko.jp (sales representative e-mail)
8 Asahiyama, Tsubata-machi, Kahoku-gun, Ishikawa, 929-0447
Osaka Sales Office
TEL +816-6618-8772 FAX +816-6618-8773
M Takaida A, Takaida 24-15, Higa
shi-Osaka-shi, Osaka, 577-0053
Website: http://www.yoshida-seiko.jp
Control number : Hydraulic parts-0002
 |
Complex turning machining（ Mass production / Mechanical processing ） |
|---|
| Company name | Yoshida Seiko Co., Ltd | Website URL | https://yoshida-seiko.jp/ |
|---|---|---|---|
| Street address |
Kahoku-gun Ishikawa Japan
[See map] |
Person in charge | Tetsuya Kayama |
| Telephone number | +81-76-288-7001 | Fax number | +81-76-288-7007 |
| Capital | 10,000,000 JPY | Employees | 45 |
| Annual sales | 1,090,000,000 JPY | EMIDAS Member Number | 66242 |
| Type of manufacturing | Industrial machinery / Transportation equipment / Medical equipment | ||
| Main 3 products |
|
||
| Large | Medium | Small |
|---|---|---|
| Development and production of prototype/Small-scale production | Machining | General-purpose milling General-purpose lathe machining Tapping Rolling Thread-cutting Machining/Handles small-scale production (order from 1 piece) Iron Stainless steel Aluminum alloy Copper alloy Molybdenum alloy Machining (resin) Keyway milling Automatic lathe Bench lathe machining |
| Development and production of prototype/Small-scale production | NC machining | Machining (vertical) NC milling NC lathe machining 5-face/5-axis machining Combined lathe machining |
| Mass production | Mechanical processing | Machining NC milling machining NC turning machining Tapping machining Five-face/axes machining Complex turning machining Wire machining Gear cutting machining Rolling machining Screw cutting machining Micro-hole machining Electrical discharge machining Iron Stainless Aluminum alloy Copper alloy Magnesium alloy Titanium alloy Sintered metal Broaching machining Automatic screw machining Turning machining(plastic) Casting Honing machining Titanium Fine particle material accepted High precision |
| Mass production | Grinding processing | NC plane grinding NC cylindrical grinding Plane grinding Form grinding Cylindrical grinding Internal grinding Centerless grinding NC internal grinding Rotary grinding |
| Assembly/Inspection | Assembly | Industrial machinery assembly |
| Auto parts manufacturing | Drive system part | Steering device |
