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Norton Twinstar Abrasive Flap Disc, Type 27, Round Hole, Plastic Backing, Ceramic/Zirconia Alumina

Available in multiple versions

1 customer review

Price: $4.12 - $590.85
Sale: Lower price available on select options
Product Specifications
Brand Name Norton Abrasives - St. Gobain
Grit Material Type Ceramic/Zirconia Alumina
Backing Type Cloth
Construction Type Coated
Manufacturer Series Number Twinstar
Material Type Plastic
Style Name Type 27
UNSPSC Code 31191506

Norton Twinfiber type 27, abrasive flap discs are a good choice for blending and smooth finish... Read full product description

Currently showing 1-15 of 15
Outside Diameter Grit Type Arbor Hole Diameter Fastening Type Max Rotational Speed Number of Items Part Number Part Number
The Amazon Standard Item Number (ASIN) uniquely identifies the item in the Amazon catalog.
Price Quantity
4 inches 80 Grit 5/8 inches Round Hole 13000 rpm 100 63642536155 B004MYGUT0
4-1/2 inches 36 Grit 7/8 inches Round Hole 13000 rpm 1 63642504876 B004MYGUMM
4-1/2 inches 40 Grit 7/8 inches Round Hole 13000 rpm 1 63642504877 B004MYGUMW
4-1/2 inches 60 Grit 7/8 inches Round Hole 13000 rpm 1 63642504878 B004MYGUNG
+ Shipping
4-1/2 inches 120 Grit 7/8 inches Round Hole 13000 rpm 1 63642505279 B004MYGUR2
4-1/2 inches 80 Grit 7/8 inches Round Hole 13000 rpm 10 63642504879 B00CAZL340
+ $0.00 Shipping
5 inches 60 Grit 7/8 inches Round Hole 12000 rpm 1 63642505283 B00270S2SI
5 inches 36 Grit 7/8 inches Round Hole 12000 rpm 1 63642505281 B004MYGURC
5 inches 40 Grit 7/8 inches Round Hole 12000 rpm 1 63642505282 B004MYGURM
5 inches 80 Grit 7/8 inches Round Hole 12000 rpm 1 63642505284 B004MYGURW
5 inches 120 Grit 7/8 inches Round Hole 12000 rpm 1 63642505285 B004MYGUS6
7 inches 36 Grit 7/8 inches Round Hole 8500 rpm 1 63642504880 B004MYGUOK
7 inches 40 Grit 7/8 inches Round Hole 8500 rpm 1 63642504881 B004MYGUPE
7 inches 60 Grit 7/8 inches Round Hole 8500 rpm 1 63642504882 B004MYGUPY
7 inches 80 Grit 7/8 inches Round Hole 8500 rpm 1 63642504883 B004MYGUQI
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Product Features

  • Ceramic and zirconia alumina blend is a self-sharpening grit that provides excellent performance and operation on stainless steel applications
  • Type 27 flat shape, for finishing
  • Full Y-weight polyester , resin bonding system with heavy-duty fiber backing for increased strength, durability and tear resistance
  • Durable plastic backing plate allows easy trimming for custom operations
  • Supersize grinding aid provides a cooler cutting and faster cut rate

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: B004NNVF5E
  • 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

Product Description

Norton Twinfiber type 27, abrasive flap discs are a good choice for blending and smooth finishing on stainless steel, cobalt, chrome, titanium and other hard-to-grind materials. Norton flap discs are designed for right-angle, hand-held, grinding machines for stock removal and surface blending.

With a type 27 flap disc, hold the grinder in operation at an angle less than fifteen degrees to the work surface. Steeper angles will weaken the flap edges.

Coated abrasives have individual abrasive grains spaced at a predetermined distance from one another. This is a closed-coat disc. 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. This disc 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 and can withstand rough treatment. Use with molded rubber back-up pads, using a hard pad for aggressive cutting, a medium pad for general purpose applications, or a soft pad for contours and fine finishing work.

Ceramic and zirconia alumina blend is tougher than aluminum oxide, and is self-sharpening. It is formed in a process where alumina gel is dried and then crushed. These engineered crystals fracture and refracture at fine levels, to form a smooth, self-sharpening abrasive material. This blend has excellent performance and efficiencies on mild carbon steel, ferrous metal, cast iron applications. It offers three times the working life of aluminum oxide.

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, sanding, 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 MrCaravayo on September 30, 2015
Fastening Type: Round HolePart Number: 63642505283Max Rotational Speed: 12000Grit Type: 60 GritOutside Diameter: 5Number of Items: 1Arbor Hole Diameter: 7/8 Verified Purchase
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