HBG Tools & Supply
Mercer Zirconia Flap Disk 7/8" Arbor
Mercer’s Zirconia Flap Discs are high-performance abrasive discs designed for tough grinding, blending, finishing, and edge work on ferrous and non-ferrous metals. They offer sharper cutting, longer life, and smoother finishes compared to standard aluminum-oxide flap discs, especially in demanding applications like stainless steel, cast iron, and heavy stock removal.
| Feature | Details & Benefits |
|---|---|
| Abrasive Material | Zirconia grain — tougher, more self-sharpening, better resistance to heat and loading, compared to many traditional abrasives. |
| Density Options | Standard Density or High Density versions. High Density discs have about 40% more cloth/abrasive material, giving longer life, smoother grind, and better performance in heavy removal tasks. |
| Disc Types / Shapes | |
| • Type 27 (flat): best for working on flat surfaces; used between ~0–15° angle. | |
| • Type 29 (conical or “mini-flared”): better for edge work or more aggressive angle grinding. | |
| Backing & Construction | Strong fiberglass backing, X-weight cloth support; resin bonds that resist loading. Disc design helps cool cutting, and durable backing improves safety and stability. |
| Size / Grit Range | Common sizes: 4-1/2″, 5″, 7″ diameters; arbor sizes such as 5/8-11 and 7/8″. Grits typically from 24 (coarse) up to 120 (fine) for finishing. |
| Operating RPM | Discs rated up to typical angle grinder speeds (~12,000-13,300 RPM depending on size). |
| Angle of Use | Best performance when used at low angles (0-15°) for Type 27; Type 29 allows somewhat higher angles for edge/finned work. |
Mercer’s Zirconia Flap Discs are high-performance abrasive discs designed for tough grinding, blending, finishing, and edge work on ferrous and non-ferrous metals. They offer sharper cutting, longer life, and smoother finishes compared to standard aluminum-oxide flap discs, especially in demanding applications like stainless steel, cast iron, and heavy stock removal.
| Feature | Details & Benefits |
|---|---|
| Abrasive Material | Zirconia grain — tougher, more self-sharpening, better resistance to heat and loading, compared to many traditional abrasives. |
| Density Options | Standard Density or High Density versions. High Density discs have about 40% more cloth/abrasive material, giving longer life, smoother grind, and better performance in heavy removal tasks. |
| Disc Types / Shapes | |
| • Type 27 (flat): best for working on flat surfaces; used between ~0–15° angle. | |
| • Type 29 (conical or “mini-flared”): better for edge work or more aggressive angle grinding. | |
| Backing & Construction | Strong fiberglass backing, X-weight cloth support; resin bonds that resist loading. Disc design helps cool cutting, and durable backing improves safety and stability. |
| Size / Grit Range | Common sizes: 4-1/2″, 5″, 7″ diameters; arbor sizes such as 5/8-11 and 7/8″. Grits typically from 24 (coarse) up to 120 (fine) for finishing. |
| Operating RPM | Discs rated up to typical angle grinder speeds (~12,000-13,300 RPM depending on size). |
| Angle of Use | Best performance when used at low angles (0-15°) for Type 27; Type 29 allows somewhat higher angles for edge/finned work. |