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  • Norton Gemini Flexible Blending Depressed Center Abrasive Wheel, Type 27, Aluminium Oxide, 7/8" Arbor, 4-1/2" Diameter x 1/8" Thickness, Grit 60 (Pack of 1)
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Norton Gemini Flexible Blending Depressed Center Abrasive Wheel, Type 27, Aluminium Oxide, 7/8" Arbor, 4-1/2" Diameter x 1/8" Thickness, Grit 60 (Pack of 1)

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List Price: $138.00
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Product Specifications
Mfr Part # 66252830425
Grit Size 60
UPC 662528304253
Arbor Diameter 7/8  inches
EAN 0662528304253
Fastening Type Round Hole
Item Weight 1 pounds
Maximum Speed 13580  RPM
Number of Items 1
Outside Diameter 4-1/2  inches
Warranty Manufacturer
Wheel Diameter 4-1/2 inches
Wheel Thickness 1/8  inches
Specification for this product family (See all  products)
Brand Name Norton Abrasives - St. Gobain
Grit Material Type Aluminum Oxide
Construction Type Bonded
Style Name Type 1
UNSPSC Code 31191600

Product Features

  • Aluminum oxide is durable and the most common abrasive grain
  • Type 01 wheels are straight (also called flat) cut-off wheels, and are used for peripheral grinding
  • Small diameter wheels for use with horizontal and straight shaft grinders
  • Reinforced design helps provide safety, strength, and straight cuts
  • Resin bonds soften under the heat of grinding, releasing dulled abrasive grains

Product Details


Product Description

Norton Gemini Type 01 Fast Cut all-purpose wheels have an aluminum oxide formulation to remain free cutting. Run the grinder at the highest possible speed marked on the wheel.

Reinforced cutoff wheels are designed to resist breakage caused by severe cross-bending and are required on any operation where the work is not securely clamped. Resin bonds are organic bonds that soften under the heat of grinding, releasing dulled abrasive grains. Because of its forgiving nature, only an organic type bond is used in cutoff wheels. The resin-bonded wheel is more resilient than a vitrified wheel. The manufacturing term for a resin bond wheel is "cured," meaning the wheel has been heated to less than 500 degrees F. Straight (also called flat) wheels are the most common grinding wheel shape. Flat wheels are used for grinding on the periphery, or outside boundary edge, of the wheel and produce a slightly concave surface, called hollow ground, on the workpiece. These wheels can be used for cutting off, tool grinding (between centers or centerless), and removing mold marks and sand from castings, among others. They are frequently used with grinding machines. Using a harder grade wheel increases wheel life but also increases burn and requires more power, and decreases cut rate. Burn is the effect on a workpiece from thermal stress as abrasive cuts or rubs material away. The damage ranges from discoloration to cracking of the workpiece.

Aluminum oxide is a widely used and versatile abrasive material. It is a tough, fracture- and wear-resistant grit that works well with a broad range of materials, from metals to wood. Aluminum oxide is more durable than silicon carbide and often used for material removal and finishing.

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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