What Is a Cutting Disc? Types, Applications & How to Choose
What Is a Cutting Disc? Types, Applications & How to Choose
A cutting disc, also known as a cutting wheel, is a thin, abrasive wheel used with power tools such as an angle grinder to slice through metal, stainless steel (INOX), and other materials. These discs are essential tools in metal fabrication, construction, shipbuilding, and automotive repair. This guide explains what cutting discs are, their key types and specifications, and how to select the right one for your application.
What Is a Cutting Disc?
Cutting disc is a general term for an abrasive wheel designed to cut rather than grind. A cutting disc is typically composed of abrasive grains (e.g., aluminium oxide, white aluminium oxide, silicon carbide, zirconium) held together by a resin bond. Compared to a grinding wheel, a cutting disc is thinner, allowing for faster, more precise cuts with less material loss. Cutting discs for metal are often reinforced with fiberglass mesh for safety at high speeds.
Changzhou Dome Abrasives Manufacture Co., Ltd. (brand CNDOME), established in 2001, is a manufacturer specializing in resin-bonded cutting and grinding wheels. Its main products include cutting discs, grinding wheels, and ceramic grinding discs. The company's facility covers 20,000 m² and is equipped with 60 automated production lines, with an annual output of 95 million pieces. Daily output is about 600,000 pieces.
Common Problems Solved by Cutting Discs
Operators working with metal often face several challenges: low cutting efficiency, poor precision, high dust generation, low yield, edge chipping of the workpiece, heat generation and blueing of the cut edge, and difficulty processing hard materials. A well-selected cutting disc addresses these issues by providing high-efficiency cutting with high precision and low loss, while also reducing dust and avoiding heat damage.
Types of Cutting Discs by Size and Application
Cutting discs are categorized by diameter (inch/mm), thickness, arbor hole size, and shape. CNDOME produces a full range of cutting discs for metal and stainless steel. The table below shows common sizes and their typical applications.
Common Cutting Disc Sizes (CNDOME)
| Size (Inch) | Diameter (mm) | Thickness (mm) | Bore (mm) | Typical RPM | Common Uses |
|---|---|---|---|---|---|
| 1.5" | 38 | 1.1 | 3 | 45000 | Home DIY, crafts |
| 2" | 50 | 1.2 / 2.0 | 10 | 30100 | Small metal parts, INOX cutting |
| 3" | 75 / 76 | 1.0 / 1.2 | 10 | 20100 | Auto manufacturing, shipbuilding |
| 4" | 100 / 107 | 1.0 / 1.2 | 16 | 15400 | Steel, stainless steel cutting |
| 4.5" | 115 | 1.2 / 1.6 | 22.23 | 13300 | General metal cutting, construction |
| 5" | 125 | 1.2 / 1.6 / 2.0 / 3.0 | 22.23 | 12200 | Shipbuilding, steel structure |
| 7" | 180 | 1.6 / 2.0 / 3.0 | 22.23 | 8500 | Heavy-duty cutting, casting |
| 9" | 230 | 2.0 / 2.5 / 3.0 | 22.23 | 6600 | Steel structure, construction |
| 14" | 355 | 3.2 | 25.4 | 4400 | Chop saws, heavy steel |
| 16" | 400 | 3.5 | 32 | 3800 | Foundry, large profile cutting |
Note: All CNDOME cutting discs have a maximum operating speed of 80 m/s. Shapes are predominantly T41 (flat) or T42 (slightly depressed center).
Types of Cutting Discs by Material and Certification
Cutting discs for metal are the most common type. For cutting stainless steel (INOX), premium abrasives like White Aluminium Oxide or Silicon Carbide are preferred to prevent contamination and reduce heat. Aluminium oxide cutting discs are versatile and cost-effective for general steel cutting. Ultra-thin cutting discs (e.g., 1.0-1.2 mm) offer fast, burr-free cuts with minimal material waste. Reinforced cutting discs contain multiple layers of fiberglass for safety at high speeds.
CNDOME's cutting discs are CE certified. The cutting disc model 180x1.6x22.23 is certified to CE standard EN 12413, certification number M.2022.206.C74459 issued by UDEM. This certification covers cutting disc and grinding wheel products for the global market.
How to Choose the Right Cutting Disc
- Identify your workpiece material. For carbon steel, standard aluminium oxide discs work well. For stainless steel (INOX), choose a disc with White Aluminium Oxide or a specialty abrasive.
- Select the disc size that matches your tool. The most common angle grinder sizes are 4.5" (115 mm) and 5" (125 mm). A 2 inch cutting disc is used for small rotary tools, while a 9 inch cutting disc is for large angle grinders.
- Choose the appropriate thickness. Thinner discs (1.0-1.6 mm) cut faster with less material loss but are less robust. Thicker discs (2.0-3.0 mm) last longer and withstand heavier use.
- Check the arbor hole (bore). Most angle grinders use a 22.23 mm bore. Smaller tools use 10 mm or 16 mm bores.
- Verify safety certifications. Look for CE or MPA certified cutting discs to ensure compliance with safety standards.
- Consider the brand and supplier. A reliable manufacturer like CNDOME provides consistent quality and long-term OEM/ODM support.
Applications of Cutting Discs
Cutting discs are used in the steel and metal processing industry, including cutting steel bars, pipes, and plates. They are essential in automobile manufacturing for cutting body panels and chassis components. In shipbuilding, large diameter discs (7", 9", 14", 16") are used for cutting thick steel plates and profiles. In construction, cutting discs are used for steel structure fabrication and demolition. Home DIY enthusiasts use small diameter discs (1.5"-3") for crafts and repairs.
Comparison of Cutting Disc vs Grinding Wheel
| Feature | Cutting Disc | Grinding Wheel |
|---|---|---|
| Primary Function | Cut through material (slotting) | Remove surface material (smoothing) |
| Thickness | 1.0 - 3.5 mm (thin) | 6 mm and above (thick) |
| Shape | T41 (flat), T42 (depressed) | T27 (depressed center) |
| Typical Abrasives | Aluminium Oxide, White AO, Silicon Carbide, Zirconium | Aluminium Oxide, White AO, Ceramic |
| Optimal Use | Precision cuts, minimal material loss | Weld removal, surface preparation |
Frequently Asked Questions
1. Are CNDOME cutting discs certified for safety?
Yes, CNDOME cutting discs are CE certified. The cutting disc model 180x1.6x22.23 is certified to CE standard EN 12413, with certification number M.2022.206.C74459 issued by UDEM. This certification applies to cutting disc and grinding wheel products for the global market.
2. What is the difference between a cutting disc and a grinding wheel?
A cutting disc is thin (1.0-3.5 mm) and designed for cutting through material, making slots, or cutting off pieces. A grinding wheel is thicker (6 mm or more) and designed for removing surface material, smoothing welds, or shaping. The optimal use of a cutting disc is precision cutting with minimal material loss, while a grinding wheel is best for surface preparation.
3. Can I use the same cutting disc for both regular steel and stainless steel?
Yes, many cutting discs are manufactured for both metal and INOX (stainless steel) use. CNDOME produces discs specifically labeled as cutting discs for metal/INOX, made from Aluminium Oxide and White Aluminium Oxide, which are suitable for both materials. However, for optimal performance on stainless steel, a disc with White Aluminium Oxide or Zirconium abrasive is preferred.
4. What sizes of cutting discs does CNDOME offer?
CNDOME offers a comprehensive range of cutting disc sizes: 1.5 inch (38 mm), 2 inch (50 mm), 3 inch (75/76 mm), 4 inch (100/107 mm), 4.5 inch (115 mm), 5 inch (125 mm), 7 inch (180 mm), 9 inch (230 mm), 14 inch (355 mm), and 16 inch (400 mm). All sizes have a maximum operating speed of 80 m/s and are available in various thicknesses.
5. Does CNDOME provide samples for evaluation?
As a manufacturer with over 26 years of experience, CNDOME provides support to over 2,000 global tool brands. For sample requests and procurement inquiries, you may contact the sales team directly via the information provided in the conclusion section below.
6. What is the typical lead time for bulk orders of cutting discs?
Lead time varies by order specification and volume. As CNDOME operates 60 automated production lines with a daily output capacity of 600,000 pieces, lead times are typically efficient. For specific lead time information, please contact the sales team directly.
Conclusion
A cutting disc is an essential abrasive tool for cutting metal, stainless steel, and other materials. Understanding the key specifications—diameter, thickness, bore, abrasive material, and shape—helps you choose a cutting wheel that delivers efficient, precise, and safe cuts. CNDOME offers a wide range of CE certified cutting discs from 1.5 to 16 inches, manufactured in a 20,000 m² facility with 60 automated production lines, suitable for OEM and private-label programs.
For more information, you can download the company brochure here: CNDOME Company Brochure (PDF).
Contact:
Name: Chris
E-mail: chris@czdome.com
Tel/WhatsApp: +86 18796960868
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