What is a Centerless Grindnig Machine?
High Productivity
Free rotation without fixing enables fast, efficient multi-part processing.
Precise Grinding Performance
Ensures precise cylindrical grinding with consistent diameter and surface finish.
Versatile Grinding for a Wide Range of Components
Efficiently processes diverse components, regardless of type or shape.
Centerless grinding machines have evolved significantly since the Industrial Revolution and now play a critical role in various industries.
In particular, they have become indispensable tools in the aerospace, automotive, and precision machinery manufacturing sectors.
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.
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.
Key Features:
• CNC / NC Control : SGTE ; 4-axis, SGTI ; 5-axis for precise machining of complex thread profiles
• High-Rigidity Structure : Minimizes vibration and thermal distortion for stable long-term machining
• Automation Functions : Built-in dressing & balancing units ensure consistent quality
Key Features:
• CNC / NC Control : SGTE ; 4-axis, SGTI ; 5-axis for precise machining of complex thread profiles
• High-Rigidity Structure : Minimizes vibration and thermal distortion for stable long-term machining
• Automation Functions : Built-in dressing & balancing units ensure consistent quality
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.
Description
[What is a Centerless Grindnig Machine?]
A centerless grinding machine, as the name implies, is a grinding method that operates without a center support. Instead of being fixed by a chuck or center, the workpiece rotates freely while the grinding wheel precisely refines its surface to achieve the desired shape. This process is highly effective in maintaining clean and uniform diameters and surfaces.
Centerless grinding machines are widely used for circular parts and are particularly optimized for machining the outer diameters of cylindrical components.
[Advantage of Centerless Grinding Machine]
- High Productivity
- Precise Grinding Performance
- Versatile Grinding for a Wide Range of Components
[Tailored to Your Manufacturing Needs :From Small to Large Parts]
The SGC series includes models designed for various workpiece sizes.
- SGC 200 and SGC 300 feature a relatively narrow regulating wheel, making them ideal for small to medium-sized parts.
- SGC 500, SGC 500K, and SGC 500C have a wider regulating wheel, allowing for efficient processing of large or heavy components.
A centerless grinding machine, as the name implies, is a grinding method that operates without a center support. Instead of being fixed by a chuck or center, the workpiece rotates freely while the grinding wheel precisely refines its surface to achieve the desired shape. This process is highly effective in maintaining clean and uniform diameters and surfaces.
Centerless grinding machines are widely used for circular parts and are particularly optimized for machining the outer diameters of cylindrical components.
[Advantage of Centerless Grinding Machine]
- High Productivity
- Precise Grinding Performance
- Versatile Grinding for a Wide Range of Components
[Tailored to Your Manufacturing Needs :From Small to Large Parts]
The SGC series includes models designed for various workpiece sizes.
- SGC 200 and SGC 300 feature a relatively narrow regulating wheel, making them ideal for small to medium-sized parts.
- SGC 500, SGC 500K, and SGC 500C have a wider regulating wheel, allowing for efficient processing of large or heavy components.
