
Sell your Okamoto 820N today.
MTE does not act as a broker, nor do we buy on consignment. We buy machinery and assets outright and arrange the pickup.
- Make
- Okamoto
- Model
- 820N
- Year
- 1981
- Category
- CNC Grinding Machines
- Condition
- Used / Surplus

Jason sets final pricing on the machines MTE buys.
Okamoto 820N Specifications
- Spindle
- Horizontal
- Magnetic Chuck Working Surface-L
- 20" 508 mm
- Magnetic Chuck Working Surface-W
- 8" 203.2 mm
- Max Height Under New Wheel
- 15.6" 396.24 mm
- Max Longitudinal Travel
- 25.59" 649.99 mm
- Cross Travel
- 9.05" 229.87 mm
- Cross Feed Handwheel Graduation
- 0.0004" 0.0102 mm
- Vertical Handwheel Graduation
- 0.00005" 0.0013 mm
- Table Longitudinal Feeds Range (Variable)
- 1 - 83 ft/min. 25.3 m/min.
- Max Spindle Speed
- 6,000 RPM 6,000 RPM
- Max Grinding Wheel Diameter
- 8" 203.2 mm
- Max Grinding Wheel Width
- 1" 25.4 mm
- Max Grinding Wheel Hole Diameter
- 1.25" 31.75 mm
- Grinding Wheel Power
- 3 hp 2.2 kW
- Electrics
- 230/3/60 230/3/60
- Dimensions
- 90" x 65" x 72" 90" x 65" x 72"
- Weight
- 3,500 lbs 3,500 lbs
Do you have a Okamoto 820N to sell?
We are actively seeking a 1981 Okamoto 820N Reciprocating Surface Grinder to enhance our inventory of quality CNC grinding machines. This model is well-regarded for its precision and reliability, making it a sought-after choice for many manufacturing operations. The Okamoto 820N features a horizontal spindle design, enabling efficient grinding processes with a maximum spindle speed of 6,000 RPM. It comes equipped with an 8" x 20" magnetic chuck, providing a stable and secure work surface for various grinding applications. The machine boasts a maximum height under the new wheel of 15.6 inches, and its longitudinal travel reaches up to 25.59 inches, allowing for versatility in handling different workpieces.
With a cross travel of 9.05 inches, operators can achieve precise movements and adjustments. The variable table longitudinal feeds range from 1 to 83 feet per minute, accommodating a wide range of grinding tasks, while the cross feed handwheel graduation of 0.0004 inches ensures meticulous control. This grinder is powered by a robust 3 HP motor, providing the necessary strength for demanding operations. The machine's dimensions are 90" x 65" x 72", and it weighs approximately 3,500 lbs, making it a substantial addition to any workshop. With its durability and advanced features, the Okamoto 820N is an excellent investment for businesses looking to improve their grinding capabilities.
If you have a 1981 Okamoto 820N or any other used CNC machines to sell, contact us today. At Superior Machine Tools, we offer competitive prices and a seamless selling experience. Let us help you unlock the value of your machinery!

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