Norton RazorStar fibre-backed abrasive disc 27990, 4-1/2 in (114 mm) diameter, 7/8 in (22.2 mm) arbor hole, 36 grit (coarse), ceramic alumina. Per the manufacturer, it provides a high cut rate and a smooth finish, reduced heat generation for cooler cuts and longer disc life, and a heavy fibre backing for additional strength and tear resistance; it is suited to all materials including carbon steel, aluminum, stainless steel and hard-to-grind metals. The photo shows the disc alone. Sold individually.
Features
- Diameter 4-1/2 in (114 mm), arbor hole 7/8 in (22.2 mm)
- 36 grit (coarse), ceramic alumina
- Fibre backing
- Maximum RPM printed: 11,000
- High cut rate and smooth finish, per the manufacturer
- Sold individually (1 disc)
Specifications
| Specification | Value |
|---|
| Brand | Norton |
| Series | RazorStar |
| Part number | 27990 |
| Diameter (per Norton) | 4-1/2 in (114 mm) |
| Arbor hole (per Norton) | 7/8 in (22.2 mm) |
| Maximum RPM (per Norton) | 11,000 |
| Grit (per Norton) | 36 (coarse) |
| Abrasive (per Norton) | Ceramic alumina |
| Backing (per Norton) | Fibre |
| Sold as | 1 disc |
References
| Manufacturer part number (MPN) | Big Papa SKU |
|---|
| 27990 | BP-G-NOR-27990 |
