Standard Abrasives 7000122038 921 Quick-Change Unitized Wheel, 3 in Dia Wheel, 1/4 in W Face, Medium Grade, Aluminum Oxide Abrasive

Standard Abrasives, 7000122038, Unitized Wheel, Quick-Change, Series: 921, Type TR Attachment, Aluminum Oxide Abrasive, 3 in Wheel Diameter, 1/4 in Face Width, Medium Grade, 12000 rpm Maximum, Density Grade: Extra Hard, 9 Density

Our extra hard Standard Abrasives quick-change aluminum oxide 900 series unitized wheel is the most dense and aggressive wheel in our Standard Abrasives unitized wheels line. This non-woven abrasive wheel is engineered with the highest level of toughness and edge durability for effective removal of challenging burrs and efficient polishing of harder metals. Our Standard Abrasives quick-change aluminum oxide 900 series unitized wheel is offered in two grades of aluminum oxide (A/O) mineral: coarse or medium. Its extra hard density makes it the hardest, most aggressive wheel in our Standard Abrasives unitized wheels line. The combination of high density and coarse mineral enables this wheel to withstand high-pressure applications and cut with force, making it suitable for heavy duty deburring, cleaning, blending and finishing. Use our Standard Abrasives 900 series quick-change A/O unitized wheel on smaller areas of the workpiece to remove heavy flash and parting lines, deburr sharp edges, remove coarse coated abrasives grind lines and remove heavy machine tool marks. When it comes to blending, trust this wheel to blend pits in cast parts, refine surfaces on high nickel alloys and blend machined surfaces where wheel rigidity is necessary. Standard Abrasives quick-change unitized wheels are available in smaller sizes with a TS or TR attachment. Quick-change wheels allow tool-free swap outs, maintain secure attachment at high speeds, and save operators time when switching discs between grades or applications. Easy fastening and swapping of wheels enhances tool efficiency and worker productivity. Choose the wheel compatible with your TR or TS holder pad. TR wheels have a nylon threaded male hub that easily threads onto TR or 3M Roloc type holder pads with a turn of the wrist, and the TS system has a metal hub that fastens to its holder pad with a simple twist. All Standard Abrasives TS and TR holder pads have a 1/4-20 female thread. A 1/4 in TA4 mandrel attaches the holder pad to the tool. 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.