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52810 - Sait 3A 5-Inch Fiber Sanding Disc 36 Grit Aluminum Oxide (100-Pack)

Packaging: 100 in a pack
$2.30/ea $144.00/100 in a pack only $1.44/eaSave 37%

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SKU: SAI52810 Categories: ,

OVERVIEW

Industrial Grade 5-Inch Fiber Discs for Metalworking

The Sait 52810 3A Fiber Disc is a staple abrasive solution for industrial fabrication and manufacturing shops. Designed with a premium aluminum oxide grain, the 3A series is engineered to provide consistent, reliable performance on a wide variety of ferrous metals. This 5-inch disc features a coarse 36 grit, making it the ideal choice for heavy stock removal applications where speed and efficiency are paramount. The closed coat structure packs the abrasive grains densely on the disc surface, which translates to more cutting points in contact with the workpiece and a more aggressive material removal rate.

Durability is a key feature of the Sait 52810. Built on a heavy-duty fiber backing, these discs are rigid enough to withstand the high pressure required for grinding down welds and removing heavy scale, yet flexible enough when used with the appropriate backing pad to blend contours effectively. The resin-over-resin bonding system locks the grain in place, resisting heat buildup and extending the life of the disc even under demanding conditions. This ensures that operators spend more time working and less time changing out worn abrasives.

Sold in a bulk pack of 100, this product is tailored for high-volume operations looking to optimize their consumable costs without sacrificing quality. Whether you are working with carbon steel, structural steel, or stainless steel, the Sait 3A fiber disc delivers a uniform scratch pattern and dependable cutting action. It requires a standard backing pad for use on angle grinders.

Key Industrial Benefits

  • Cost-Effective: The 3A Aluminum Oxide formulation provides a long service life at an economical price point.
  • High Removal Rate: 36 grit is aggressive enough for rapid shaping and leveling.
  • Versatile Compatibility: Fits standard 5-inch angle grinders with a 7/8-inch arbor.
Additional Information
Packaging Description:100 in a pack, 100 per box
Used to Sand:Stainless, Steel or Stainless
Diameter (in):5"
Arbor (in):7/8"
Backing Material:Fiber
Series:3A
Max RPM:10000
----- new values below ----
Grain Type:Aluminum Oxide
Backing Material:Fiber
Coat Type:Closed Coat
Series:3A
Max RPM:10000
Diameter (in):5"
Arbor (in):7/8"
Grit:36
Used to Sand:Steel or Stainless
Packaging Description:100 per box
Brand:Sait

INCLUDED

  • 100 x Sait 5" x 7/8" 36 Grit 3A Fiber Discs

APPLICATIONS

  • Weld blending and leveling
  • Heavy stock removal on carbon steel
  • Deburring and finishing stainless steel
  • Rust, paint, and scale removal
  • Surface preparation for coating
  • Edge chamfering and beveling
  • General metal fabrication

FAQ

The Sait 3A series uses premium Aluminum Oxide grain, which is the industry standard for general-purpose grinding on ferrous metals.

Yes, resin fiber discs are not rigid enough to be used alone. You must use a compatible backing pad (typically rubber or plastic) on your angle grinder.

Yes, the Sait 52810 is effective on both carbon steel and stainless steel, although specialized zirconia or ceramic discs may last longer on stainless for very heavy duty applications.

Closed coat means the abrasive grains cover the entire surface of the disc, providing aggressive cutting and a finer finish. Open coat has gaps to prevent clogging, usually for wood or soft metals.

This SKU (52810) is sold as a box containing 100 fiber discs.

While you should always check the specific print on the disc, 5-inch fiber discs are typically rated for around 10,000 to 11,000 RPM. Never exceed the rating of the backing pad or the disc.

You can, but aluminum oxide closed-coat discs may load (clog) quickly on soft aluminum. A specialized disc for non-ferrous metals or a grinding wax is recommended for aluminum.

This fits any standard 5-inch angle grinder or sander that has a 5/8"-11 spindle, provided you have the correct backing pad with a 7/8" center hole or nut.