Featured GENOS M560-V and GENOS L250II

GENOS always makes the grade in accuracy and affordability — and always gives you options. When you’re looking for a compact lathe that excels in mass production and exact efficiency, you’ll find it all with the Okuma GENOS L250II. Or if you need a competitive-advantage-creating machining center that you can trust for any task, the standard-bearing Okuma GENOS M560-V is the best decision you can make.

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Connect. Visualize. Improve. With Okuma’s Connect Plan, gain visibility of your plant floor that will help you optimize machine operations and discover actionable insights for increased profitability.
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Connect Plan Lite

Preview Connect Plan on a single machine with just a quick download from the Okuma App Store. View operating history and production rates in visual graph format and see alarm history with live links to alarm details, all on an easy-to-read display.
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NEW OKUMA GLOBAL REPAIR CENTER

Opened in 2026, the Okuma Global Repair Center reflects our continued investment in service excellence. Located on our Charlotte, North Carolina campus, it brings advanced mechanical and electrical repair, exchange, and legacy parts support together to strengthen machine uptime and reinforce our promise to support you for life.
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AVAILABLE NOW! OKUMA CARE KITS

With an emphasis on preventive maintenance to keep your machine tool running, our CARE Kits help ensure your Okuma machine tool's mechanical, electrical, lubrication, airflow, and coolant systems will continue to operate in “like-new” condition.
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The Okuma Machinist's Handbook

Discover helpful resources and tips from Okuma, made for your shop floor.
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Okuma Webcast

Watch Okuma’s webcasts to expand your knowledge on a variety of manufacturing-related topics through the lens of Okuma’s machine tools and technologies.
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GI-20NII

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PART CAPABILITIES - up to 11.81” ID and up to 11.81” max grind length
WIDE RANGE OF GRINDING WHEEL SPINDLES – Belt drive up to 40,000 RPM High frequency up to 150,000 RPM
5 SURFACE HYDROSTATIC GUIDEWAYS - High rigidity, accuracy and durability
OSP-P300GA CONTROL - easy operation with IGAP+ conversational programming
FLEXIBLE FOR A VARIETY OF PART SIZES- Available with a single wheel spindle, 2 wheel spindles or 4 wheel spindles

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Our GI-20N high-speed I.D. CNC grinder delivers accuracy and power in a compact design. Capable of simultaneous 2-axis control, this model is extremely flexible in handling a wide variety of workpiece shapes in a simple data setting. Centralized control of lubricating and pneumatic devices allows for easy maintenance, while simplified programming and the program help function allow for easy operation.

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Lift, load, turn and transform what's possible in manufacturing. With Okuma Factory Automation, your machine becomes more than a tool – it becomes a partner in efficiency and precision.

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Okuma standard automation systems are ready to perform. From loaders to pallet changers, these systems are built for speed, accuracy, and uptime.

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When the challenge is complex, the solution is Okuma. Our specialized automation systems meet the demands of your production. No idea is too bold.

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Resources

GI-20NII CNC Internal Grinder

Avoid These “Productivity Killers” During CNC Grinder Changeovers

7-Step Spindle Changeover for ID Grinders

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Your local Okuma distributor will be happy to give you a call or visit your facility to discuss your machine tool needs.

Bore Range - with 100mm (3.95) OD Wheel	in	Ø0.20-11.81
Max Grinding Length - 1WS/2WS	in	7.87
Max Grinding Length - Center Rest Option	in	11.81
Max Grinding Length - 4WS	in	5.12
Workhead Spindle Bore	in	Ø2.76
Rapid Traverse	ipm	472
Available Spindles:	Belt Driven High Frequency	max: 40,000 rpm max: 150,000 rpm

Bore Range - with 100mm (3.95) OD Wheel	mm	Ø5-300
Max Grinding Length - 1WS/2WS	mm	200
Max Grinding Length - Center Rest Option	mm	300
Max Grinding Length - 4WS	mm	130
Workhead Spindle Bore	mm	Ø70
Rapid Traverse	m/min	12
Available Spindles:	Belt Driven High Frequency	max: 40,000 rpm max: 150,000 rpm

GI-20NII

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Every Solution Works for You

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GI-10NII

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GI-20NII

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