3" x 21" Aluminum Oxide Sanding Belt


Pack Size:
1 Belt

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Product Description

3" x 21" Aluminum Oxide Sanding Belt

Name: 3” x 21” Aluminum Oxide Sanding Belt
Description: 3” x 21” Aluminum Oxide Sanding belt for three inch by twenty one inch belt sanders are manufactured with extremely tough, tear resistant, x weight backing and top of the line aluminum oxide abrasive grains. Perfect for sanding grinding or polishing jobs ranging from wood working, cabinet making, and furniture sanding to metal grinding and finishing. These 3" wide 21" long Aluminum Oxide sanding belts are some of the most used abrasive belts due to their diverse array of sanding applications and their affordable price. These 3" x 21" sanding belts a perfect option for day to day deburring, sanding down splinters or jagged edges. 3” x 21” Aluminum Oxide sanding belts come in 40 grit and 60 grit for more aggressive stock removal, 80 grit and 120 grit grit for medium to light sanding, as well as 220 grit, 320 grit, 400 grit, 600 grit, 800 grit and 1000 grit for fine sanding and polishing. MADE IN THE USA
Other Features:
  • Bi-Directional - the belt can be run in either direction.
  • Closed Coated - 100% of the belt is covered in abrasive grains.
Suitable For: Most Ferrous metals (including cast iron, carbon steel, alloy steel, wrought iron), composites, plastics and wood.
Width: 3″
Length: 21″
Grit: 40, 60, 80, 120, 180, 220, 320, 400, 600, 800 grit
Material: Aluminum Oxide
Belt Backing Weight: X-Weight

3" x 21" Portable Belt Sander including but not limited to:
Black & Decker DS321 Dragster, PORTER-CABLE 352VS, WEN 6321, Hitachi SB8V2, Makita 9903, Craftsman 3 x 21 Belt Sander

Quantity: 1 Belt Per Order

Looking for a different size, material or grit? We have access to an extensive amount of hard to find sanding belts. Please contact us and let us know what your looking for.

Reviews Write a Review

  • 5
    From 120 grit on up

    Posted by Steven Warfel on Sep 4th 2020

    It got so old, calling and asking, Do you have 3x21 1000 grit belts? No, 36, 80, and 120. Same story, many times with occasional, they are not made past 120.. OK, go to Amazon for a price far north of perfomance. Again. NEVER AGAIN! For less than $200 I have a box of abrasives equal to all my purchases of past two decades. I bought stuff I didn't need. I need them now. I am not going to review all of the items I purchased. I will simply say that there is no need to look beyond Empire if you want to easily remove part of a whole. Any whole you choose can be shaped, polished, or disassembled particle by particle. You choose the size. Ha, I love this store.

  • 5
    Thank You

    Posted by G on Aug 29th 2020

    Thank You

  • 5
    Sanding belts

    Posted by Richard Brown on Aug 15th 2020

    Fast service, good product, get what what you want, no running around from store to store.

  • 5
    Quality seems excellent.

    Posted by Louis Warmoth on Jul 31st 2020

    Fast shipping. Reasonable prices.

  • 5
    40 grid sanding belt

    Posted by michael on Jul 11th 2020

    They worked better then I thought they removing the finish around the edge of my hard wood floor

  • 5
    sanding belts

    Posted by david Schweidenback on Apr 30th 2020

    they were great

  • 5
    3" x 21" Aluminum Oxide Sanding Belt

    Posted by David Reider on Apr 27th 2020

    The belts were of excellent quality and did the job perfectly ! Going to order some belts for my 1" x 30" sander now.

  • 5

    Posted by Richard N Hitchcock on Jan 20th 2020

    It is so nice to be able to shop and find what you want. I have tried the big box stores, what a waist of time. This is my first order with Empire and I will certainly buy again. The quality of this product is EXCELLANT. The Service is also EXCELLANT.

  • 5
    1St time customer

    Posted by George in Clarksville TN on Sep 24th 2019

    I just needed some sanding belts to sharpen stuff. Found Empire Abrasives on-line, has great prices. Registered and placed order. On-line communications are timely and order shipped to me very quickly. Have used the 800 grit to polish edge onto my pocket knife. I am very happy with my purchase. as I ordered 2 belts in 2 grits, it may be a while before I order again. Sorry. Sanding belt is holding up well and I am a happy camper.