Okamoto Machine Tool Works
A Gunma-based machine tool maker whose semiconductor products include final polishers for 300 mm silicon wafers.
岡本工作機械製作所・Equipment・Last updated: October 23, 2026
Overview
Okamoto Machine Tool Works is headquartered in Gunma Prefecture. Its PNX332B is a fully automatic final polisher for 300 mm wafers with 3 polishing tables that polishes 6 wafers at once from intermediate to final polishing, producing atomic-level mirror surfaces. The maker describes it as a best seller among 300 mm final polishers.
Business: Wafer polishers and grinders
Why it matters
Final polishing sets the surface quality of prime silicon wafers.
Main products
- •Final polishers for silicon wafers (PNX332B, PNX312)
Sites in Japan
Head officeHeadquarters
Gunma
Products (1)
- PNX332B · Wafer polishing and edge grinding equipment