大野精工 List of Products and Services

At Ohno Seiko Co., Ltd., our lapping process can achieve a mirror finish with Rz 0.03μm on flat surfaces and Rz 0.2μm or higher on irregular shapes. This precision has been realized through the pursuit of lapping agents and methods by our skilled technicians. We can process irregular shapes without compromising quality, so please feel free to consult us about any shape or surface roughness. Upon delivery, we will provide actual measurement values attached from our unique quality manual. We also have a wide range of measuring instruments, so we accept requests for shape and surface roughness measurements only. *For more details, please download the PDF or feel free to contact us.

• Processing Contract

At Ohno Seiko, we are capable of high-precision machining at the micron level, including right angles, parallelism, roundness, verticality, concentricity, and coaxiality. 【Available Machining Technologies】 ● Lapping, lapping polishing, flat grinding, cylindrical, outer diameter, inner diameter, irregular shape grinding ● Machining, milling, turning ● Die-sinking electrical discharge machining, wire cutting, fine hole electrical discharge machining ● Profile grinding, laser welding 【Available Machining Sizes】 For rectangular items: Width up to 350mm × Length up to 300mm For round items: Outer diameter up to φ200mm Precision ±5 microns *For more details, please download the PDF or feel free to contact us.

• Processing Contract

This document is the VA/VE Technology Handbook of Ohno Seiko Co., Ltd., which primarily provides mirror finish processing and precision machining. Our company supports the enhancement of high added value for customer equipment after comparing and examining various surface treatments. We will propose suitable selections for processing methods, materials, surface treatments, and heat treatments, so please feel free to contact us if you have any requests. [Contents] ■Basic knowledge about extending the lifespan and improving the quality of machine parts ■Case studies of VA/VE in machining and surface treatment ■Reasons why Ohno Seiko is chosen ■Company overview *For more details, please download the PDF or feel free to contact us.

• Processing Contract