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  • Norton NorZon Plus R821 Benchstand Abrasive Belt, Cotton Backing, Zirconia Alumina
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Norton NorZon Plus R821 Benchstand Abrasive Belt, Cotton Backing, Zirconia Alumina

Available in multiple versions

1 customer review

Price: $33.12 - $172.31
Product Specifications
Brand Name Norton Abrasives - St. Gobain
Grit Material Type Zirconia Alumina
Backing Type Cotton
Construction Type Coated
Manufacturer Series Number NorZon Plus R821 Benchstand
UNSPSC Code 27112739

The Norton NorZon Plus R821 Benchstand durable, cotton-backed belts are su... Read full product description



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Overall Width Overall Length Grit Type Number of Items Part Number Part Number Price Quantity
   
2-1/2 inches 60 inches 36 10 78072727235 B001HWC9TU
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$68.62
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2-1/2 inches 60 inches 50 10 78072727233 B0025QKM1O
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$67.59
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2-1/2 inches 60 inches 40 10 78072727234 B0026GNX0U
In Stock (3)
$33.12
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2-1/2 inches 60 inches 80 10 78072727231 B002C4VFV0
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$51.53
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2-1/2 inches 60 inches 60 10 78072727232 B002KGIQS0
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Product Features

  • Zirconia alumina is self-sharpening and durable, allowing for a faster cut rate than aluminum oxide
  • Cloth backing is stiffer, tougher, and thicker than a paper backing
  • The dense placement of the abrasive grain means a higher-quality finish than an open-coat belt
  • Benchstand belts are used with benchstand belt grinders
  • This belt is for use with non-ferrous metals, glass, and ceramics

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004K6MN1Y
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (1 customer review)
  • Product Warranty: For warranty information about this product, please click here

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Product Description

The Norton NorZon Plus R821 Benchstand durable, cotton-backed belts are suitable for non-ferrous metals, glass, and ceramics. These belts have an aggressive, rapid cut rate and good grain adhesion for longer life on soft or brittle materials, especially those that are ground dry (without lubricant).

Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. This is a closed-coat belt. A closed coat covers 100 percent of the surface with abrasive grains, for more stiffness and better surface finish than an equivalent open coat, where abrasive grit covers 50 to 70 percent of the surface. The cloth backing is stiffer, tougher, and thicker than a paper backing. Cloth resists tearing while bending and flexing during use. This belt features a resin bond. Resin bonds have good moisture resistance, are harder and less flexible than glue bonds, and have good heat resistance and grain retention. Resin bonds are useful for abrasive operations with high operating speeds, impact, and sudden loading, as the resin bond is strong.

Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. An open coat covers 50 to 70 percent of the surface with abrasive grains, for greater flexibility and clog resistance than a closed coat, which covers 100 percent of the surface. An open coat allows for longer usage time because it clogs less, while a closed coat offers a finer surface finish than an equivalent open-coat abrasive. This is a closed-coat belt. The cloth backing is stiffer, tougher, and thicker than a paper or film backing. Cloth resists tearing while bending and flexing during use. This belt is suitable for use with a die grinder. Use with molded-rubber back-up pads. Use a hard pad for aggressive cutting, a medium pad for general-purpose applications, or a soft pad for contours and fine finishing work.

Zirconia alumina is a self-sharpening abrasive that allows for a faster cut rate and longer life than aluminum oxide, due to its ability to fracture and refracture, creating new cutting edges. Zirconia alumina is often used for high stock removal on wood and metals.

Abrasives are used for a variety of applications from shaping a part to fine finishing, depending on the grit size. Low grit numbers like 40 are coarse and are used for removing excess material and shaping a part. High grit numbers like 400 are fine and help to create a smooth surface finish.

Norton Abrasives manufactures a wide variety of sanding, grinding, and polishing abrasives, and has been located in the United States since 1885. In 1990, Saint-Gobain purchased Norton, keeping its manufacturing facilities and offices in the same location. Norton/Saint-Gobain has been recognized as a Global 100 Sustainable Company, as well as earning ISO 9000 and 14001 certification for quality and environmental management standards.


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Most Helpful Customer Reviews

By Marc on October 18, 2013
I make knives and tools, and I've used a ton of different brands of abrasive belts. Norton has some of the highest quality and best wearing abrasive belts I've ever had the pleasure to use.
So far I'm still working on wearing through the first belt, I've hogged out 1.5 knives on the first belt so far. If I can get 2 knives out of one belt then I'm really impressed, usually I can only get one.

So, for about 1.60 per belt, you can't really do much better in price and quality.
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