Cut-Off and Grinding Wheels
Every metalworking job starts with the right wheel. Whether you are slicing through steel bar, removing a weld bead, or shaping a fabrication, the performance of your angle grinder depends entirely on the disc you mount on it. MRO Qatar supplies a comprehensive range of cut-off and grinding wheels for angle grinders, bench grinders, and cut-off saws—engineered for fast cutting, consistent stock removal, and safe operation across steel, stainless steel, aluminum, and masonry.
Cut-Off Wheels vs. Grinding Wheels: What’s the Difference?
These two wheel types look similar but serve fundamentally different purposes. Using the wrong one wastes time and creates a safety risk.
| Feature | Cut-Off Wheels | Grinding Wheels |
|---|---|---|
| Thickness | Thin (typically 1–3mm) | Thick (typically 6mm / ¼”) |
| Primary Use | Slicing, severing, trimming | Material removal, weld blending, shaping |
| Wheel Type | Type 1 (straight) | Type 27 (depressed center) |
| Working Angle | Perpendicular to workpiece | 30–45° angle to workpiece |
| Key Risk | Side pressure can shatter a thin disc | Overheating or glazing if wrong grit is used |
Rule of thumb: Never use a cut-off wheel for grinding. Thin discs are not designed for lateral force and can shatter under side load .
Our Cut-Off and Grinding Wheel Range
Cut-Off Wheels
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Type 1 straight cut-off wheels for angle grinders
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Reinforced cut-off wheels for cut-off saws
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Thin (1mm) precision cutting discs for clean, fast cuts
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Standard (2.5–3mm) general-purpose cutting discs
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Wet-cut and dry-cut options
Grinding Wheels
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Type 27 depressed center grinding wheels
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Type 28 saucer wheels for specific contour applications
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Bench and pedestal grinder wheels
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Reinforced grinding discs for heavy stock removal
Abrasive Grain Options
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Aluminum Oxide (A/O): The workhorse grain for carbon steel and general ferrous metals
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Zirconia Alumina: Longer life and aggressive cutting on stainless steel and high-pressure applications
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Ceramic: Premium self-sharpening grain for hard steels, stainless, and high-removal-rate grinding
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Silicon Carbide: For masonry, stone, cast iron, and non-ferrous metals
Matching the Wheel to Your Material
| Workpiece Material | Recommended Abrasive | Notes |
|---|---|---|
| Carbon Steel / Mild Steel | Aluminum Oxide | Standard choice for general fabrication |
| Stainless Steel | Zirconia Alumina or Ceramic | Avoid contamination; use stainless-rated wheels |
| Hard Alloys / Tool Steel | Ceramic | Self-sharpening grain maintains cut rate |
| Aluminum | Silicon Carbide (dedicated aluminum wheel) | Standard steel wheels clog on aluminum |
| Masonry / Concrete / Stone | Silicon Carbide or Diamond | Match wheel to application and tool |
Understanding Wheel Specifications
A grinding wheel’s performance is defined by its specification code. For example, a marking like WA 46 K 8 V breaks down as:
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WA: Abrasive type (White Aluminum Oxide)
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46: Grit size (medium—balance of removal and finish)
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K: Grade (bond strength—medium hardness)
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8: Structure (grain spacing)
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V: Bond type (Vitrified)
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