4-1/2x1/2x7/8 CRS AO 811 UNITIZED DISC

For stock removal and polishing on tricky areas such as internal right angles, choose our Standard Abrasives™ Type 27 unitized wheel - 800 Series for easier access and excellent results. These hard density wheels are designed with extra tough edge durability, making them a good match for heavy duty edge deburring and stainless steel polishing applications. The hardness of this wheel places it on the upper end of the spectrum of aggressiveness among Standard Abrasives™ unitized wheels. Given the coarseness of the mineral and greater material density, our Standard Abrasives™ Type 27 unitized wheel - 800 Series withstands high-pressure applications and cut aggressively. Use an 800 Series unitized wheel for deburring stainless steel pipe thread, wire edges from surgical instruments, stainless steel sinks, tanks and other equipment for the food service industry. It is a prime choice for deburring gears and aircraft wing spars, and breaking edges on aluminum extrusions. When it comes to polishing, trust an 800 Series Wheel to effectively polish stainless steel rule dies, welds on stainless steel sinks, machined surfaces, hand tools and round tubing. A 4-1/2 in Type 27 wheel (sometimes called a Type 27 Disc) is designed to fit a right angle grinder with a wheel guard, typically used for fiber discs, flap discs, and grinding wheels. Type 27 wheels have a depressed center to allow grinding at any angle without damaging the surrounding surface with the attachment nut, and are particularly useful for working on internal angles. These unitized wheels are used in conjunction with, and sometimes in lieu of, a coated abrasive resin fiber disc or flap disc. Standard center hole and quick-change unitized wheels are also available in a range of sizes (sold separately). Standard Abrasives™ unitized wheels are a great match for tough deburring, cleaning, blending and finishing applications. They come in a broad range of densities and grades to suit different metals, the degree of aggressiveness required, shape of the part and desired finish. Although used for some of the same tasks as Standard Abrasives™ buff and blend products, they are designed with a far stronger and denser construction to support more aggressive applications and accomplish material removal more rapidly. Even though unitized wheels are much stiffer products, the non-woven nylon fibers of the wheel maintain the advantage of responding to surface irregularities while preserving the geometry of the piece, and produce a consistent finish. Unitized wheels are created by starting with layers of open web material that combines non-woven fiber strands and abrasive mineral with a tough resin bond. These layers of web are then cured and compressed together. By fusing layers of open web, the abrasive gains more toughness and durability, so it can withstand repeated wear. Ultimately, the wheel's durability is what makes it such a good match for edges. The wheel is tough enough to complete high-pressure edgework without tearing or otherwise disintegrating. Regardless of the diameter or thickness of the wheel, it maintains its structural integrity to remain a stiff and long-lasting abrasive even under high pressure. Additionally, as the layers wear, the wheel can be dressed to maintain its shape. Standard Abrasives™ unitized wheels are load-resistant to keep you cutting with fresh mineral.