Ultra-Precision Grinding Machines
±2μm accuracy for aerospace, defense, robotics, and semiconductor components.
High-Frequency & High-Speed Spindles
30,000–120,000 rpm spindles in belt-driven, built-in motor, hydrostatic, and hydrodynamic types.
Comprehensive Machine Lineup
Centerless, double-disc, thread, cylindrical, and special-purpose grinders for key parts.
Global Retrofit & Service
25+ years in spindle repair and retrofit, extending machine life and reducing downtime.
ORSKOREA
See us at Seoul ADEX 2025
ORSKOREA delivers ultra-precision grinding machines and high-frequency spindles for aerospace, defense, robotics, and advanced mobility. With ±2μm accuracy and proven reliability, we enable the machining of critical high-value components.
Masanhoewon-gu, Changwon-si, Gyeongsangnam-do, South Korea
Aerospace
Products & Services
Universal cylindrical grinding machines(SGU35)
ORSKOREA
ORSKOREA’s cylindrical grinding machines are engineered to deliver superior surface quality and tight tolerances for mission-critical components. In aerospace and defense applications, they enable reliable machining of engine shafts, landing gear parts, and weapon system components that demand both strength and precision.
Key advantages of our cylindrical grinders include:
• Ideal for diverse, small-batch productions with high repeatability
• Exceptional dimensional precision for tight-tolerance parts
• Capability for tapered and curved surface grinding
• Flexible length capacity for various workpieces
• Efficient grinding wheel utilization for reduced costs
• Smooth table movement with low noise and vibration, ensuring operator comfort and machining stability
By combining these advantages with proven long-term reliability, ORSKOREA’s cylindrical grinders provide manufacturers with the performance needed to achieve superior quality and efficiency in high-value part production.
Key advantages of our cylindrical grinders include:
• Ideal for diverse, small-batch productions with high repeatability
• Exceptional dimensional precision for tight-tolerance parts
• Capability for tapered and curved surface grinding
• Flexible length capacity for various workpieces
• Efficient grinding wheel utilization for reduced costs
• Smooth table movement with low noise and vibration, ensuring operator comfort and machining stability
By combining these advantages with proven long-term reliability, ORSKOREA’s cylindrical grinders provide manufacturers with the performance needed to achieve superior quality and efficiency in high-value part production.
Centerless ginding machines (SGC 300)
ORSKOREA
The SGC 300 centerless grinding machine provides stable accuracy and durability required for defense and aerospace manufacturing. Its thru-feed design allows efficient machining of small cylindrical components without chucks or centers, making it highly effective for shafts, pins, and precision housings used in armored vehicles, drones, and aircraft systems. With in-house developed hydrostatic slides and spindles, the machine minimizes thermal distortion and ensures long-term repeatability, supporting the production of high-value parts such as bearing races, engine components, battery cases, and optical housings. By combining ±2μm precision with proven reliability, the SGC 300 strengthens the competitiveness of manufacturers in both defense and civilian applications.
High Frequency Spindle
ORSKOREA
ORSKOREA’s high frequency grinding spindles, operating at speeds up to 120,000 rpm—the highest level in Korea—are engineered for ultra-precision and durability in critical defense and aerospace applications. In addition to belt-driven, built-in motor, hydrostatic, and hydrodynamic types widely used in semiconductor and precision equipment, our spindles are customized to deliver the exact speed and power output required by customers. With over 25 years of expertise in repairing and retrofitting leading Japanese, German, and Swiss brands such as TOYO, KOYO, OKUMA, GMN, and Fischer, and with multiple proprietary patents including joint developments with Schaeffler Korea, ORSKOREA ensures proven reliability. These spindles are ideal for machining high-value defense components such as armored vehicle gears, drone actuators, aircraft engine parts, multispectral sensor housings, and advanced optical or communication devices, supporting the competitiveness of both defense and civilian manufacturers.
Screw external/internal thread grinding machine(SGTE .SGTI)
ORSKOREA
The SGTE/SGTI thread grinders are designed to machine both internal and external threads with high precision, accommodating diverse thread profiles and exact dimensions. These machines are essential for producing high-value components where accuracy and durability are critical, such as aerospace fasteners, defense system parts, and precision ball screws. By enabling shorter processes and greater efficiency, the SGTE/SGTI provide cost advantages in equipment investment and energy use. Developed as domestic alternatives to imported equipment, they strengthen localization efforts while creating new export opportunities in aerospace and defense markets.
News
What Is an Internal Thread Grinding Machine?
[What Is an Internal Thread Grinding Machine?]
An internal thread grinding machine is a specialized machine designed to precisely grind internal threads inside components. Compared to external thread grinding, internal thread grinding is far more demanding in terms of machining conditions and precision, requiring advanced technology and highly stable equipment.
Internal thread grinding Machines are mainly used for grinding fastener components in the aerospace and defense sectors, reducer components used in humanoid robots, and ball screws, which are experiencing growing demand in the automotive industry.
[ORSKOREA SGTI-80: A New Standard in Internal Thread Grinding]
The SGTI-80 is ORSKOREA’s independently developed high-precision internal thread grinding machine, designed as an optimal solution for domestic and global precision part manufacturers.
Key Features:
- 5-axis servo control system enabling precise grinding of complex thread profiles
- High-rigidity structure minimizing vibration and thermal distortion
- Built-in automated dressing and balancing units
- High-speed table feed system maximizing productivity
- Dual-process capability allowing two operations on a single machine, improving efficiency and reducing costs
An internal thread grinding machine is a specialized machine designed to precisely grind internal threads inside components. Compared to external thread grinding, internal thread grinding is far more demanding in terms of machining conditions and precision, requiring advanced technology and highly stable equipment.
Internal thread grinding Machines are mainly used for grinding fastener components in the aerospace and defense sectors, reducer components used in humanoid robots, and ball screws, which are experiencing growing demand in the automotive industry.
[ORSKOREA SGTI-80: A New Standard in Internal Thread Grinding]
The SGTI-80 is ORSKOREA’s independently developed high-precision internal thread grinding machine, designed as an optimal solution for domestic and global precision part manufacturers.
Key Features:
- 5-axis servo control system enabling precise grinding of complex thread profiles
- High-rigidity structure minimizing vibration and thermal distortion
- Built-in automated dressing and balancing units
- High-speed table feed system maximizing productivity
- Dual-process capability allowing two operations on a single machine, improving efficiency and reducing costs
17 Sep 2025
What is a Cylindrical Grinding Machine?
[What is a Cylindrical Grinding Machine?]
A cylindrical grinding machine is a specialized tool used to grind the outer or inner surfaces of cylindrical or conical components. The primary purpose of cylindrical grinding is to improve the surface quality of the circular workpiece and achieve precise tolerances.
Work pieces processed on lathes or CNC lathes often have insufficient surface roughness Ra values. Thus, a cylindrical grinding machine is needed in various industrial fields where precision and surface quality are critical.
[Applications of Cylindrical Grinding Machines]
Aerospace Industry :
Machining durable, high-precision parts such as turbine blades and landing gear.
Automotive Industry :
Grinding high-precision components like engine parts, gears, and bearings.
Electronics Industry :
Crafting high-precision parts for semiconductor manufacturing equipment.
[Advantages of Cylindrical Grinding Machines]
- Ideal for Diverse yet Small-Batch Productions
- High-precision Dimensional Capability
- Capability for Tapered and Curved Grinding
- Length Versatility
- Efficient Grinding Wheel Reuse
- Smooth Table Movement and Low Noise and Vibration
[Key Features of ORSKOREA Cylindrical Grinding Machine?]
- Swing Capacity Up To 350mm
- Hydrodynamic or Hydrostatic Spindle Options
- Mineral Casting Bed Options for Enhanced Stability
- Multi Workhead & Adjustable Tailstock for Flexibility
A cylindrical grinding machine is a specialized tool used to grind the outer or inner surfaces of cylindrical or conical components. The primary purpose of cylindrical grinding is to improve the surface quality of the circular workpiece and achieve precise tolerances.
Work pieces processed on lathes or CNC lathes often have insufficient surface roughness Ra values. Thus, a cylindrical grinding machine is needed in various industrial fields where precision and surface quality are critical.
[Applications of Cylindrical Grinding Machines]
Aerospace Industry :
Machining durable, high-precision parts such as turbine blades and landing gear.
Automotive Industry :
Grinding high-precision components like engine parts, gears, and bearings.
Electronics Industry :
Crafting high-precision parts for semiconductor manufacturing equipment.
[Advantages of Cylindrical Grinding Machines]
- Ideal for Diverse yet Small-Batch Productions
- High-precision Dimensional Capability
- Capability for Tapered and Curved Grinding
- Length Versatility
- Efficient Grinding Wheel Reuse
- Smooth Table Movement and Low Noise and Vibration
[Key Features of ORSKOREA Cylindrical Grinding Machine?]
- Swing Capacity Up To 350mm
- Hydrodynamic or Hydrostatic Spindle Options
- Mineral Casting Bed Options for Enhanced Stability
- Multi Workhead & Adjustable Tailstock for Flexibility
17 Sep 2025
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About
[Company Profile]
ORSKOREA is a precision machine tool and spindle manufacturer with over 30 years of expertise, serving aerospace/defense, robotics, and future mobility industries.
We specialize in high-precision grinding machines such as centerless, thread, and special-purpose grinders, delivering ±2μm accuracy and stable reproducibility for critical defense and aerospace parts.
Our spindle lineup, including high-speed spindles up to 120,000 rpm, supports demanding applications from semiconductors to robotic joints.
With over 80% of sales from exports, we partner with leading global manufacturers to expand localization and enhance international competitiveness.
[Main Products and Services]
ORSKOREA manufactures precision grinding machines including centerless, double disc, internal/external thread, superfinishing, and cylindrical grinders. Our machines ensure machining accuracy and stable reproducibility, making them suitable for aerospace and defense components such as ball screws, gears, and bearings. Proprietary spindles operate from 30,000 to 120,000 RPM and cover high-frequency, ultra-precision, belt-driven, built-in motor, hydrostatic, and hydrodynamic types, addressing demanding applications in aerospace, defense, robotics, and semiconductor industries. In addition to new machines, ORSKOREA offers over 25 years of experience in spindle repair and retrofit for leading Japanese, German, and Swiss brands, providing solutions that extend equipment life, minimize downtime, and enhance productivity.
ORSKOREA is a precision machine tool and spindle manufacturer with over 30 years of expertise, serving aerospace/defense, robotics, and future mobility industries.
We specialize in high-precision grinding machines such as centerless, thread, and special-purpose grinders, delivering ±2μm accuracy and stable reproducibility for critical defense and aerospace parts.
Our spindle lineup, including high-speed spindles up to 120,000 rpm, supports demanding applications from semiconductors to robotic joints.
With over 80% of sales from exports, we partner with leading global manufacturers to expand localization and enhance international competitiveness.
[Main Products and Services]
ORSKOREA manufactures precision grinding machines including centerless, double disc, internal/external thread, superfinishing, and cylindrical grinders. Our machines ensure machining accuracy and stable reproducibility, making them suitable for aerospace and defense components such as ball screws, gears, and bearings. Proprietary spindles operate from 30,000 to 120,000 RPM and cover high-frequency, ultra-precision, belt-driven, built-in motor, hydrostatic, and hydrodynamic types, addressing demanding applications in aerospace, defense, robotics, and semiconductor industries. In addition to new machines, ORSKOREA offers over 25 years of experience in spindle repair and retrofit for leading Japanese, German, and Swiss brands, providing solutions that extend equipment life, minimize downtime, and enhance productivity.
