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  • Standard Abrasives™ Unitized Block 802913, 911 1/4 in Thick, 10 per case
  • Standard Abrasives™ Unitized Block 802913, 911 1/4 in Thick, 10 per case

    Part Number 8029133M ID 66000029539UPC 00051115353536
    • 15˝ x 15˝ block with varying thickness can be converted to a custom size or shape and used for hand sanding or mounted to a tool
    • Extra hard density block with medium to coarse mineral results in superior edge deburring and polishing
    • Harder material density and increased edge durability over 800 Series Unitized Block increases cut and life for heavy-duty tasks and hard metals
    • Aluminum oxide mineral is a good match for ferrous and non-ferrous metals, including aluminum
     More...
    Specifications
    Attribute Name
    Value
    Brand
    Standard Abrasives™
    Form Material
    911
    Form Type
    Unitized
    Mineral Type
    Aluminum Oxide
    Product Form
    Wheel
    Thickness
    0.25 in
    Thickness (Metric)
    6.35 mm
    Product Details
    • 15˝ x 15˝ block with varying thickness can be converted to a custom size or shape and used for hand sanding or mounted to a tool
    • Extra hard density block with medium to coarse mineral results in superior edge deburring and polishing
    • Harder material density and increased edge durability over 800 Series Unitized Block increases cut and life for heavy-duty tasks and hard metals
    • Aluminum oxide mineral is a good match for ferrous and non-ferrous metals, including aluminum
    • Open web is load resistant, contributing to longer abrasive service life
    • Open web features nylon strands that will not melt or smear when heated, reducing potential for unwanted marks and blemishes

    Our extra hard Standard Abrasives™ 900 Series Unitized Block is the most dense and aggressive block in our Standard Abrasives™ Unitized Block line. The 15˝ x 15˝ non-woven abrasive block is engineered with the highest level of toughness and edge durability for effective removal of challenging burrs and efficient polishing of harder metals. The block can be cut and customized for a range of uses.

    Standard Abrasives™ 900 Series Unitized Block
    Standard Abrasives Unitized Wheel Product Application
    Cut to Custom Size or Shape for Hand Sanding or Tool Attachment
    Standard Abrasives™ Series 900 Blocks come in varying thicknesses that can be cut to size for hand finishing or refining. They are also ideal for specialty uses on a tool, when working with an intricate or unique workpiece that requires an unusual shape to achieve the desired result. After cutting and dressing the material into a customized shape such as a mounted point or other abrasive specialty, attach it to a tool using a unitized wheel mandrel (sold separately).

    For your applications requiring a standard wheel shape, choose from the Standard Abrasives™ line of Series 900 Unitized Wheels, offered with a center hole or quick change attachment (sold separately).

    Extra Hard Density Block Removes Challenging Burrs with Precision and Effectively Polishes Harder Metals
    Our Standard Abrasives™ 900 Series Unitized Block is offered in two grades of aluminum oxide (A/O) mineral: coarse or medium. The combination of extra hard density and coarse mineral enables this block 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 Unitized Block for removal of heavy flash and parting lines, deburring sharp edges for a clean radius, removal of coarse coated abrasives grind lines and removal of heavy machine tool marks. When it comes to blending, trust this block to blend pits or cast parts, refine surfaces on high nickel alloys and blend machined surfaces where extra rigidity is necessary.

    Standard Abrasives™ 900 Series Unitized Blocks are also ideal for specialty uses on a tool, when working with an intricate or unique workpiece that requires an unusual shape to achieve the desired result.
    Non-Woven Unitized Construction Offers a Step Up in Density and Durability for Stubborn Surfaces
    Standard Abrasives™ Unitized Blocks come in a range of densities and grades to suit different metals, the degree of aggressiveness required, and desired finish. Although used for some of the same tasks as Standard Abrasives™ Buff and Blend products, our unitized products are designed with a far stronger and denser construction to support more aggressive applications and accomplish material removal more rapidly, making them a great match for tough deburring, cleaning, blending and finishing applications. Even though unitized construction results in a much stiffer product, the non-woven nylon fibers of the block maintain the advantage of responding to surface irregularities while preserving the geometry of the piece, and produce a consistent finish.

    Unitized blocks are created by stacking layers of 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 with heat. By fusing layers of open web, the abrasive gains more toughness and durability, so it can withstand repeated wear.

    Ultimately, the material's durability is what makes it such a good match for edges. The material is tough enough to perform high-pressure edgework without tearing or otherwise disintegrating. Regardless of the thickness of the block, it maintains its structural integrity to remain a stiff and long-lasting abrasive even under high pressure. Additionally, as the layers wear, the material can be dressed to refresh its shape.

    Load-Resistant Construction Boosts Life and Performance
    Standard Abrasives™ Unitized Blocks are load-resistant to keep you cutting with fresh mineral. The gaps in the open web allow unwanted swarf to escape. Consequently, less debris clogs the abrasive, so the mineral can stay fresh, keep cutting sharp and deliver a consistent cut over the life of the product. As the fibers break down and fresh mineral is exposed, it reduces the likelihood of dull or blunt mineral smearing the surface, contributing to cleaner surfaces and less re-work. Furthermore, manual fatigue that may result from applying heavy pressure to a dull abrasive is reduced.

    The Many Benefits of Standard Abrasives™ Non-Woven Products
    Standard Abrasives™ Unitized products offer many benefits for heavy-duty jobs. For all the aforementioned reasons, Standard Abrasives™ Unitized products invigorate deburring, cleaning, blending and finishing applications by helping operators reduce finishing steps, minimize costs and achieve greater throughput.

    Customer Reviews
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    Large Volume Order

    If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.


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