Summary

The Okuma GI-20NII is a CNC internal (ID) grinder designed to precisely remove material from the inner surface of cylindrical workpieces. It delivers simultaneous 2-axis grinding with a compact footprint and supports a variety of part sizes and wheel spindle configurations. Key technical differentiators include high-speed grinding spindles up to 150,000 RPM and hydrostatic guideways for enhanced rigidity and accuracy.

Key Capabilities

• Simultaneous 2-axis CNC control for complex ID profiles
• Maximum bore capacity up to 11.81" ID and 11.81" grind length
• Multiple spindle options: belt drive (up to 40,000 RPM) and high frequency (up to 150,000 RPM)
• Configurable with 1, 2, or 4 wheel spindles
• Five hydrostatic guideways for increased rigidity and precision
• OSP-P300GA control with conversational IGAP+ programming

Key Specifications