The CGW 42142 is a 4-inch diameter Type 27 zirconia flap disc designed for aggressive grinding on steel surfaces. It combines premium zirconia alumina grain with a poly/cotton backing to balance durability and finish, while the zirconia concentration supports high stock removal. An active grinding aid is included to help maintain cooler cutting action under light pressure, which can aid operator comfort and control during extended use.
Key construction details include a 4" disc with a 5/8-11" arbor and a 40-grit zirconia grain configuration, optimized for rapid metal removal in heavy-duty applications. This disc is intended for aggressive stock removal, making it suitable for prep work, deburring, and material removal tasks where high productivity is needed. The packaging lists a standard box quantity of 10 discs per set, and each disc is sized for compatibility with compatible 4" flap disc mandrels that accept 5/8-11" shanks.
When selecting this flap disc, consider the material and workpiece dimensional stability, as the Type 27 profile is designed for flush grinding and contour finishing on flat or slightly curved surfaces. For best results, use with appropriate grinding equipment set to a maximum RPM around 15,300, and apply steady, moderate pressure to leverage the cool-cutting aid without glazing the abrasive surface. This information helps ensure safe operation and effective material removal in typical metalworking and facility-maintenance tasks.
Features:
- Premium Zirconia Alumina grain on poly/cotton backing for durability and finish
- High stock removal with zirconia concentration
- Fastest stock removal in the marketplace for steel applications
- Recommended for aggressive use and heavy-duty grinding
- Active grinding aid provides cool cutting with light pressure
- 4" diameter, 5/8-11" arbor, Type 27, 40-grit
- Grain:
- Zirconia
- Dia:
- 4
- Arbor/Shank Size:
- 5/8-11
- Type:
- 27
- Grit:
- 40
- RPM:
- 15300
- Package Size:
- Each
- Box Quantity:
- 10
