The Sait 27611 Challenger 3 is a specialized semi-flexible grinding wheel designed to bridge the operational gap between rigid depressed center wheels and resin fiber discs. Engineered by United Abrasives, this 4-1/2 inch wheel features a unique open-pattern surface that promotes airflow, significantly reducing heat generation at the contact point. This "cool grinding" capability is critical when working with heat-sensitive materials like stainless steel, preventing discoloration and warping during aggressive material removal.
Constructed with premium Aluminum Oxide (A60) grain, this wheel is optimized for general purpose grinding and blending on ferrous metals. The Type 29 conical profile allows for a natural 15 to 30-degree working angle, maximizing surface contact for contouring applications. Unlike standard fiber discs that require a backing pad, the Challenger 3 features a reinforced backing that mounts directly to the angle grinder, simplifying setup and improving durability.
A key specification of the SAI27611 is its contaminant-free formulation. It is manufactured to contain less than 0.1% Iron (Fe), Sulfur (S), and Chlorine (Cl), making it fully compliant for use in the nuclear industry and safe for stainless steel fabrication where cross-contamination must be avoided. The semi-flexible nature of the bond absorbs vibration, reducing operator fatigue and minimizing the risk of gouging the workpiece, resulting in a consistent, high-quality finish that often eliminates the need for subsequent sanding steps.
| Additional Information |
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| Abrasive Material:Aluminum Oxide |
| Wheel Type:Type 29 |
| Flexibility:Semi-Flexible |
| Contaminant Free:Yes |
