Standard Abrasives™ Type 27 Unitized Wheel, 811822, 822, Type 27, 4-1/2 in x 1/2 in x 7/8 in, Nylon, 5/Carton, 50 ea/Case

The Standard Abrasives Type 27 Unitized Wheel - 800 Series is a highly aggressive wheel that is designed to remove challenging burrs with precision and impart a fine polish. With its hard density, this wheel is able to withstand high-pressure applications and cut aggressively. It is an ideal choice for deburring stainless steel pipe thread, wire edges from surgical instruments, stainless steel sinks, tanks, and other equipment for the food service industry. Additionally, it is effective for deburring gears and aircraft wing spars, as well as breaking edges on aluminum extrusions. When it comes to polishing, the 800 Series Wheel is trusted to effectively polish stainless steel rule dies, welds on stainless steel sinks, machined surfaces, hand tools, and round tubing.

The Standard Abrasives 800 Series includes three Type 27 Wheels:

A 4-1/2 Type 27 Wheel, also known as a Type 27 Disc, is specifically designed to fit a right angle grinder with a wheel guard. These wheels are typically used for fiber discs, flap discs, and grinding wheels. Type 27 Wheels have a depressed center that allows grinding at any angle without damaging the surrounding surface with the attachment nut. They are particularly useful for working on internal angles. These unitized wheels can be used in conjunction with, and sometimes in place 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.

Standard Abrasives Unitized Wheels are specifically designed for tough deburring, cleaning, blending, and finishing applications. They come in a variety of densities and grades to suit different metals, the required level of aggressiveness, the shape of the part, and the desired finish. While they can be used for similar tasks as Standard Abrasives Buff and Blend products, Unitized Wheels are constructed with a stronger and denser construction to support more aggressive applications and achieve rapid material removal. Despite their stiffness, the non-woven nylon fibers of the wheel allow it to respond to surface irregularities while maintaining the geometry of the piece and producing a consistent finish.

Unitized wheels are created by layering open web material that combines non-woven fiber strands and abrasive mineral with a tough resin bond. These layers are then cured and compressed together, resulting in a wheel that is tougher and more durable. This allows the wheel to withstand repeated wear and complete high-pressure edgework without tearing or disintegrating. Regardless of the diameter or thickness of the wheel, it maintains its structural integrity and remains 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, meaning they are designed to keep cutting with fresh mineral. The gaps in the open web structure allow unwanted swarf to escape, reducing debris buildup and keeping the mineral fresh. This ensures that the wheel stays sharp and delivers a consistent cut throughout its life. As the fibers break down and fresh mineral is exposed, the likelihood of dull or blunt mineral smearing the surface is reduced, resulting in cleaner surfaces and less re-work. Furthermore, the load-resistant design reduces manual fatigue that may result from applying heavy pressure to a dull abrasive.

Standard Abrasives Unitized Wheels offer numerous benefits for heavy-duty jobs. They invigorate deburring, cleaning, blending, and finishing applications by helping operators reduce finishing steps, minimize costs, and achieve greater throughput. With their strong and dense construction, these wheels are able to handle aggressive applications and accomplish material removal rapidly. The non-woven nylon fibers allow the wheel to respond to surface irregularities while maintaining the geometry of the piece, resulting in a consistent finish. Additionally, the load-resistant design ensures that the mineral stays fresh, reducing the likelihood of dull or blunt mineral smearing the surface and contributing to cleaner surfaces and less re-work. Overall, Standard Abrasives Unitized Wheels are a reliable choice for achieving high-quality results in demanding applications.