Grinding Cup Wheel MACAW — Cup Stone for Sharpening & Surface Grinding, 4–5 in
Description
Grinding Cup Wheel MACAW — Cup Stone for Sharpening & Surface Grinding, 4–5 in
The MACAW grinding cup wheel (cup grinding wheel) is a cup-shaped stone with specially graded grit that grinds on the flat rim face, so it leaves a flatter, truer surface than an ordinary round wheel. It suits tool sharpening and flat surface grinding. Available in 4-inch and 5-inch sizes in grits #46, #60, and #80. Supplied by BOWMAP Industry & Tooling, Samut Prakan.
Specifications
| Brand | MACAW |
|---|---|
| Type | Cup grinding wheel |
| Size | 4 in and 5 in |
| Grits | #46 · #60 · #80 |
| Shapes | Straight cup (Type 6) and flaring cup (Type 11) |
| Suitable for | Tool sharpening and flat surface grinding |
Use cases
- Sharpening planer blades (HSS and carbide) to a flat, true face
- Sharpening industrial and guillotine blades to an even edge
- Sharpening large drills and end mills for CNC machines
- Grinding thick welds flush with the steel surface
- Surfacing moulds and machine parts to a true plane
Compatibility
Match the shape to the job — the straight cup (Type 6) has an even-thickness face for surface grinding and levelling large workpieces, while the flaring cup (Type 11) has a flared mouth and thin face for sharpening planer blades, cutters, and drills in tight spaces. Fit it to a surface grinder or tool grinder whose spindle is square to the work. Use a coarse grit (#46) for fast stock removal and a fine grit (#80) for finishing.
Availability
Both 4–5 inch sizes and all grits are in stock at the BOWMAP warehouse in Samut Prakan, ready for same-day pickup or next-day delivery across Bangkok and the surrounding provinces. Special wholesale pricing on larger orders — contact our team.
Related products
- MACAW round grinding wheel
- Diamond wheel for sharpening carbide
- 4-inch grinding discs
- Surface grinder
FAQ
How is a cup wheel different from a normal round wheel?
An ordinary round wheel grinds on its edge — fast, but it can leave a hollow along the curve. A cup wheel grinds on the flat rim face, giving a wide contact patch and a flat, true surface. That makes it ideal for sharpening and levelling where precision matters.
Should I choose the straight or flaring cup?
The straight cup (Type 6) suits surface grinding and levelling large workpieces. The flaring cup (Type 11), with its flared mouth, suits sharpening blade bevels and working in tight spaces. Choose by the job you do most often.
How do I pick the grit?
Lower number is coarser — #46 removes stock fast for rough grinding, #60 is medium, and #80 is fine for finishing and sharpening where a smooth surface is needed. Choose by the stage of work.
