In particular, they have become indispensable tools in the aerospace, automotive, and precision machinery manufacturing sectors. Join us as we delve into the definition, structure, and advantages of centerless grinding machines, along with the types of parts they can process.
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What is a Centerless Grinding Machine?

What is Centerless Grinding Machine?
A centerless grinding machine, as the name suggests, refers to a grinding method that operates without a center support (centerless). Unlike traditional grinding methods, the workpiece is not fixed in place but rotates freely during the grinding process. Imagine a skateboarder in motionβthis concept resembles the freedom and fluidity of centerless grinding.
This person moves freely without a fixed point, with both feet securely positioned on the skateboard. By extending their arms for balance and leaning forward, they gain speed. The underside of the skateboard maintains close contact with the ground, creating friction that allows the board to move effortlessly in the desired direction. Without a fixed position, the individual can freely rotate and change directions, a movement made possible by the unique design of the skateboard and the frictional forces at play.
Similarly, the parts processed in a centerless grinding machine resemble a skateboarder in motion. The parts rotate freely without a fixed point, while the grinding wheel polishes and refines their surfaces. Just as the friction between the skateboard and the ground ensures smooth movement, the grinding wheel meticulously smooths and shapes the part's surface to achieve the desired form.
Centerless grinding machines are primarily used for processing cylindrical parts, making them especially suitable for machining the outer diameters of round components.
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μ΄λ° 무μ¬μ°μκΈ°λ μ£Όλ‘ μν λΆνμ κ°κ³΅μ μ¬μ©λλ©°, νΉν μν΅ν λΆνμ μΈκ²½ κ°κ³΅μ μ ν©ν©λλ€.
How is the Structure of Centerless Grinding Machine?
무μ¬(μΌν°λ¦¬μ€)μ°μκΈ°μ ꡬ쑰λ μ΄λ»κ² λλμ?

A centerless grinding machine features a structure distinct from conventional grinding machines. It can be broadly divided into three main components: the grinding wheel, the regulating wheel, and the workpiece support.
무μ¬μ°μκΈ°λ μΌλ°μ μΈ μ°μκΈ°μλ λ€λ₯Έ ꡬ쑰λ₯Ό μ§λκ³ μμΌλ©°, ν¬κ² μ°μμ«λ, μ‘°μ μ«λ, κ°κ³΅λ¬Ό μ§μ§λ. μ΄λ κ² μΈ κ°μ§λ‘ ꡬμ±λλ€κ³ λ³Ό μ μμ΅λλ€.
Grinding Wheel
μ°μμ«λ (a.k.a μ§μ)

Grinding wheels are circular in shape and come in various sizes and thicknesses. They are primarily composed of bonded abrasive grains, with materials such as alumina and silicon carbide used depending on the type of abrasive.
The bonding material varies and can include resin, ceramic, or metal, chosen based on the specific grinding application. The surface of the grinding wheel may be rough or smooth, depending on the characteristics of the workpiece being processed.
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For more details on grinding stones,
Click the link below
μ§μμ λν μμΈν λ΄μ©μ μλμ ν¬μ€νΈλ₯Ό μ°Έκ³ ν΄μ£ΌμΈμ!

Regulating Wheel
μ‘°μ μ«λ
Regulating wheels adjust the gap between the grinding wheel and the workpiece, controlling the grinding depth. This helps prevent workpiece damage from excessive grinding while ensuring the desired dimensions and shape. Additionally, by adjusting the angle, they enable precision grinding for various workpiece shapes.
μ‘°μ μ«λμ μ°μμ«λκ³Ό κ°κ³΅λ¬Ό μ¬μ΄μ κ°κ²©μ μ‘°μ νμ¬ μ°μ κΉμ΄λ₯Ό μ‘°μ ν μ μλλ‘ ν©λλ€. μ΄λ‘ μΈν΄ κ³Όλν μ°μμΌλ‘ μΈν κ°κ³΅λ¬Όμ μμμ λ°©μ§νκ³ , μνλ μΉμμ νμμ μ»μ μ μκ² ν©λλ€. λν, κ°λλ₯Ό μ‘°μ ν¨μΌλ‘μ¨ λ€μν ννμ κ°κ³΅λ¬Όμ μ ν©ν μ°μ μμ μ΄ κ°λ₯ν΄μ§λλ€.
Work Support
κ°κ³΅λ¬Ό μ§μ§λ
The workpiece support is a structural component that securely holds the workpiece in place. It helps maintain optimal contact with the grinding wheel while minimizing vibration and movement during the grinding process.
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Advantage of Centerless Grinding Machine
무μ¬(μΌν°λ¦¬μ€)μ°μκΈ°μ μ₯μ

π High Productivity
λμ μμ°μ±
Since the parts can rotate freely without being fixed, multiple components can be processed quickly and efficiently in a single operation.
λΆνμ κ³ μ νμ§ μκ³ μμ λ‘κ² νμ μν€λ©΄μ μ°μμ μ§νν μ μκΈ° λλ¬Έμ, ν λ²μ μ¬λ¬ λΆνμ λΉ λ₯΄κ³ ν¨μ¨μ μΌλ‘ μ²λ¦¬ν μ μμ΅λλ€.
π Precise Grinding Performance
μ λ°ν μ°μ
Centerless grinding machines enable high-precision cylindrical grinding, ensuring uniformity in diameter and surface finish. This makes them highly effective in industries that require precision components, such as machine shafts and bearings.
무μ¬μ°μκΈ°λ κ³ μ λ°μ μν΅ν μ°μμ κ°λ₯νκ² νμ¬, λΆνμ μ§κ²½μ΄λ μν΅ν νλ©΄μ κ· μΌμ±μ μ μ§νλ λ° νμν©λλ€. μ΄ λλΆμ μ λ°ν λΆν(κΈ°κ³ μΆ, λ² μ΄λ§ λ±)μ μꡬνλ μ°μ μμ μ μ©ν©λλ€.
π¦Ύ Versatile Grinding for a Wide Range of Components
λ€μν λΆν μ°μ κ°λ₯
Since grinding is performed without fixing the workpiece, it allows for efficient processing regardless of the type or shape of the component.
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ORSKOREA NC & CNC Centerless Grinding Machine SGC Series
μ€μμμ€μ½λ¦¬μ NC & CNC 무μ¬(μΌν°λ¦¬μ€)μ°μκΈ°
ORSKOREA's centerless grinding machine series is designed to meet a wide range of machining requirements.
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Naming Rule
μ SGC μ΄λκ³ μ?
The series name consists of the common prefix "SGC" followed by a numerical value. "SGC" stands for "Super Grinding Centerless," highlighting the high precision and stability of the centerless grinding machines. The numerical value corresponds to the width of the regulating wheel (mm).
μ리μ¦μ μ΄λ¦μ "SGC"λΌλ 곡ν΅λ μ λμ΄μ μ«μλ‘ κ΅¬μ±λμ΄ μμΌλ©°, "SGC"λ "Super Grinding Centerless"μ μ½μλ‘, 무μ¬μ°μκΈ°μ κ³ μ λ°μ±κ³Ό μμ μ±μ κ°μ‘°ν©λλ€. μ«μλ μ§μμ ν(mm)μ λ°λΌ λ¬λΌμ§κ² λ©λλ€.
Tailored to Your Manufacturing Needs : From Small to Large Parts
μνλΆν° λνλΆνκΉμ§ κ°κ³΅κ°λ₯ν 무μ¬μ°μκΈ°

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.
SGC μ리μ¦λ λ€μν κ°κ³΅ μꡬμ λ§μΆ° μ€κ³λμμ΅λλ€.
- SGC 200 λ° SGC 300μ λΉκ΅μ μ’μ μ§μμ κ°μ§κ³ μμ΄ μν λ° μ€μν λΆν κ°κ³΅μ μ ν©ν©λλ€.
- SGC 500, SGC 500K, SGC 500Cλ μ§μμ νμ΄ λμ΄ λν λΆν λ° μ€λ λΆν κ°κ³΅μ μ ν©ν©λλ€.
Which parts can be machined by Centerless Grinding Machine?
무μ¬μ°μκΈ°λ‘ κ°κ³΅ν μ μλ λΆνλ€μ?

Centerless grinding machines are ideal for precision machining of components used across various industries. They play a crucial role, especially in sectors requiring high precision and mass production, such as automotive, bearings, machinery parts, molds, and hydraulic systems.
μ΄λ¬ν 무μ¬μ°μκΈ°λ λ€μν μ°μ μμ μ¬μ©λλ λΆνμ μ λ°νκ² κ°κ³΅νλ λ° μ ν©ν μ₯λΉμ λλ€. νΉν μλμ°¨, λ² μ΄λ§, κΈ°κ³ λΆν, κΈν, μ μ μμ€ν λ± κ³ μ λ°μ±κ³Ό λλ μμ°μ΄ μꡬλλ λΆμΌμμ νμμ μΈ μν μ ν©λλ€.
In this post, we covered the fundamentals of centerless grinding machines.
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μ΄λ² ν¬μ€νΈμμλ 무μ¬μ°μκΈ°μ λν κΈ°μ΄μ μΈ μ§μμ λ€λ€λ΄€μ΅λλ€.
μ€μμμ€μ½λ¦¬μ λΈλ‘κ·Έμμλ 곡μκΈ°κ³ μ°μ μ λ¬Έκ°λ€μκ² λμμ μ£Όλ μ§μμ 곡μ ν©λλ€. 곡μκΈ°κ³ λΏλ§μλλΌ ν΄μΈμμ , 무μ μμΆ λ± λ€μν μ°μ λΆμΌμ μ΅μ μΈμ¬μ΄νΈμ μ루μ μ λ°μ보μλ €λ©΄ μ§κΈ λ°λ‘ ꡬλ ν΄μ£ΌμΈμ!
