Technology / product information

High-Precision Machining at Ohno Seiko Vietnam

Ohno Seiko Vietnam provides high-precision machining services based on Japanese manufacturing standards, supported by an integrated production system and strict quality control.
We specialize in machining mechanical components that require high accuracy and stable quality, from prototyping to small- and medium-lot production.

■ Typical Machined Component Specifications
Material: Carbon steel S45C
Dimensions: 10 × 10 × 100 mm
Machining tolerance: ±0.01 mm
Production volume: 50–100 pcs per lot
Machining Process
Ohno Seiko applies a closed-loop machining process combining multiple operations to ensure dimensional accuracy and surface quality:
CNC milling for precise shaping
Wire-cut EDM for complex profiles, slots, and high-accuracy features
Grinding to achieve final tolerance and dimensional stability

■ Strengths of Ohno Seiko’s Machining Capabilities
High-precision machining based on Japanese technical standards, achieving accuracy up to ±5 μm
Integrated machining system including machining centers, milling machines, lathes, wire-cut EDM, and grinding equipment
Quality inspection in a temperature-controlled room (20℃ ±1℃) using Mitutoyo CMMs and specialized measuring instruments
Skilled engineers trained in Japan, ensuring consistent quality and process compliance

Reliable lead-time control for small- to medium-lot production (50–100 pcs)
Cost optimization through production in Vietnam while maintaining quality equivalent to Japanese factories

■ A Reliable Precision Machining Partner in Vietnam
With experienced engineers and advanced machining equipment, Ohno Seiko Vietnam supports customers in precision machining projects, from prototyping to mass production.
Please contact Ohno Seiko for consultation on precision machining solutions tailored to your drawings, technical requirements, and production volume.