Cutting and grinding discs are essential consumables used with angle grinders, cut-off machines, and bench grinders. They are designed for cutting, grinding, and finishing metal, stone, concrete, and other materials.
✅ 1. CUTTING DISCS (Cut-off Wheels)
🔹 Purpose:
Used for precise cutting of metals, stone, and non-ferrous materials.
🔹 Common Materials Cut:
- Mild steel
- Stainless steel
- Aluminum
- Cast iron
- Rebar
- Tiles and concrete
🔹 Common Types:
| Type | Description | Application |
|---|---|---|
| Metal Cutting Disc | Made of aluminum oxide or zirconia | For general steel and iron |
| Stainless Steel Disc (INOX) | Sulfur and iron-free | Prevents rust/staining on stainless |
| Diamond Cutting Disc | Embedded diamond segments | For stone, concrete, ceramics |
| Thin Cut-off Disc (1.0–1.6mm) | Minimal heat and burr | Fast, precise metal cutting |
✅ 2. GRINDING DISCS
🔹 Purpose:
Used for material removal, surface preparation, or smoothing welds and edges.
🔹 Common Types:
| Type | Description | Application |
|---|---|---|
| Depressed Center Grinding Disc (DC) | Thick, rigid with central indentation | Heavy-duty metal grinding |
| Flap Disc | Overlapping abrasive flaps | Smoothing, finishing, deburring |
| Fiber Disc (Resin-backed) | Resin and abrasive-coated paper | Surface grinding with backing pad |
| Grinding Cup Wheel | For stone, concrete grinding | Heavy-duty concrete surface prep |
📏 3. STANDARD DISC SIZES
| Diameter | Application |
|---|---|
| 100 mm (4″) | Light work, compact grinders |
| 115 mm (4.5″) | General-purpose use |
| 125 mm (5″) | Heavier jobs, more coverage |
| 180 mm (7″) | Industrial grinding |
| 230 mm (9″) | Large-scale cutting or grinding |
| 300–400 mm | Stationary cut-off machines (chop saws) |
Note: Thickness varies:
- Cutting discs: 1.0 mm to 3.2 mm
- Grinding discs: 4 mm to 8 mm (typically 6 mm)
🧰 4. KEY APPLICATIONS BY INDUSTRY
| Industry | Tool | Use |
|---|---|---|
| Fabrication & Welding | Cutting, grinding, flap discs | Cutting steel, weld preparation & cleanup |
| Construction | Diamond & grinding discs | Cutting concrete, tiles, granite |
| Automotive | Thin cutting, flap discs | Body panel cutting, rust removal |
| Shipbuilding | Large grinding discs | Heavy weld grinding & beveling |
| Oil & Gas / Pipelines | Inox cutting/grinding discs | Stainless steel work with no contamination |
🛡️ 5. SAFETY TIPS WHEN USING DISCS
- Always match disc RPM rating to grinder speed.
- Use correct size and type for your machine.
- Wear PPE: safety goggles, gloves, face shield, ear protection.
- Never use a cracked, damaged, or worn-out disc.
- Use INOX discs for stainless to avoid contamination/rusting.
📦 6. POPULAR DISC BRANDS
- Bosch
- Makita
- 3M
- Tyrolit
- PFERD
- Rhodius
- Norton
🏢 AVAILABLE AT SEMEC AGENCIES NIGERIA LIMITED
As a trusted supplier in Port Harcourt, Semec stocks a wide range of cutting and grinding discs, including:
- Metal Cutting Discs (4″ – 9″)
- Stainless INOX Cutting Discs
- Depressed Center Grinding Discs
- Flap Discs (P60, P80, P120 grit)
- Diamond Cutting Discs for concrete and tiles
- Heavy-duty industrial discs (up to 14″)
🎯 Suitable for fabrication shops, construction, oil & gas, shipyards, and general industrial use.
📞 Contact us today for wholesale and retail supply of reliable, high-performance abrasives for your workshop or project.
