4-1/2x1/2x7/8 T27 UNITIZED WHEEL

When faced with blending or finishing tricky areas such as internal right angles, choose Standard Abrasives™ Type 27 unitized wheel - 500 series for easier access and excellent results. The wheels have a soft, conformable density, making them a good match for light-pressure blending, finishing and polishing on flat or contoured parts. They offer operators the finesse needed for a precise finish. Among Standard Abrasives™ unitized wheels, the 500 series provides the softest density, and is available in medium (MED) and fine (FIN) grade silicon carbide (S/C). The Standard Abrasives™ Type 27 unitized wheel - 500 series combines soft density and sharp-cutting S/C mineral, making these wheels a good match for applications where a fine finish is more important than cut, such as polishing soft metals prior to the coating process. Due to their conformability, these wheels are great for projects with strict tolerances, because they respond to surface irregularities without gouging or undercutting the part. After prolonged use, the wheel may be dressed to maintain its shape. 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.