The companies, which possess recent technologies in casting, machining, heat treatment, surface treatment,
   and assembling, in Okayama ally to manufacture complex aircraft components for our customers.
>> Japanese
■ Contact・・・CEO Tomohiko Yasuda
■ Phone・・・・・Phone.+81-865-44-7611  FAX.+81-865-44-7883  E-Mail:
Ultra-accurate cylinder grinding using self-developed center hole grinding machines
■PR movie is seen.■
Center hole grinding machine【Technology and Product】
Center hole grinding machine “YCG-1215”
This is the precise center hole grinding machine which enables the accurate grinding of both center holes without rotating the work piece.
YASDA’s sophisticated technology perfected the unique grinding motion of the grinding stone so that the center hole can be finished to the polygon-shaped hole with 2μm tolerance.
Precision vise “YPV”
YASDA’s YPV series precision vise completely prevents any clearance between the vise and the work so that extremely precise clamping can be achieved.
Precise cylindrical grinding, internal grinding, and surface grinding:
The base center hole is precisely shaped to the desired polygon shape, the center hole is further ground cylindrically, and the internal grinding is performed using the periphery of the center hole.
Precise viseIt is very important to precisely finish the base center hole, and the center hole grinding machine developed by us demonstrates its excellent ability in finishing the center hole precisely.
■ Advantages
Precise cylindrical grinding and internal grinding up to 300mm in diameter, 1000mm in length, and 100kg in weight.
■ Machining accuracy
Concentricity: 0.2μ, Run-out: 0.5μ, Cylindricity: 1μ/300mm
■ Material availability
Stainless steel, steel, and others

【Company Profile】
■ Company Name Yasda Enginieering Service Co., Ltd.
■ Representative CEO Tomohiko Yasuda
■ Address 〒719-0251
2988-1 Rokujoin- nishi,
Kamogata-cho, Asakuchi, Japan
■ Establishment 1969
■ Capital 25 million yen
■ Employees 25
■ Major products Precise machining and assembling
of semi-conductor and electronic components
■ Web site URL
Yasda Engineering Service Co., Ltd.
Major Equipment

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