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Grinding machines are categorized into various types based on their machining methods and applications. Among them, internal thread grinding machines are specialized equipment that are gaining attention for high-precision component machining.
Products & Services
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.
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.
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.
Description
[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
