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PFERD Polifan SGP Abrasive Flap Disc, Type 29, Threaded Hole, Phenolic Resin Backing, Zirconia Alumina

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Product Specifications
Manufacturer Series Number
Polifan SGP
Material Type
Phenolic Resin
Construction Type
Backing Type
Style Name
Type 29
Grit Material Type
Zirconia Alumina
Brand Name

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5 inches 80 Grit 5/8-11 inches Threaded Hole 12200 rpm 1 62400 B003HIWK32 yes $12.81 Buy Options
7 inches 24 Grit 5/8-11 inches Threaded Hole 8600 rpm 1 62317 B003HIWIXY yes $16.07 Buy Options
7 inches 40 Grit 5/8-11 inches Threaded Hole 8600 rpm 1 62318 B001HWDW96 yes $14.78 Buy Options

Key Features

  • Zirconia alumina abrasive is self-sharpening, more durable than aluminum oxide, and for use on steel and stainless steel
  • Type 29 angled style is more aggressive than type 27 style and is used for surface grinding and weld dressing
  • Phenolic resin backing offers durability and reinforcement
  • Free of iron, sulphur, and chlorinated fillers
  • Threaded hole for attachment to grinding tools

Product Description

The Pferd Polifan SGP Zirkon-Special type 29 zirconia alumina abrasive flap disc has a phenolic resin backing for reinforcement and a threaded hole for attachment to grinding tools. The zirconia alumina abrasive is self-sharpening and more durable than aluminum oxide, which makes it suitable for fast material removal rates and aggressive grinding on steel and stainless steel. The disc produces a high-quality, consistent finish with low risk of glazing. Applications include surface grinding and weld finishing. It is free of iron, sulphur, and chlorinated fillers. The disc has an angled surface for maximum workpiece contact and is commonly used with high-output angle grinders. Threaded hole fastening type indicates a disc with a female-threaded central hole that twists onto a threaded arbor.

Abrasive flap discs are made from overlapping pieces of coated abrasive attached to a hub. They help reduce finishing time and cost by grinding and finishing in the same step, such as when removing a weld bead and smoothing the workpiece around the weld. Flap discs are coated, meaning an adhesive is used to attach the abrasive grains to a backing of paper, plastic, or cloth. The action of a flap disc is much like that of a sanding disc: the grinding or polishing occurs on the face of the disc. They 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 (with fewer, larger grains) and remove excess material and shape parts. High grit numbers like 400 are fine (with more, smaller grains) and help create a smooth surface finish.

Pferd manufactures abrasives and cutting tools for grinding, finishing, and cutting. Founded in 1799 in Germany, Pferd has its U.S. headquarters in Leominster, MA, and meets International Organization for Standardization (ISO) 9001 standards.

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