180 Grit Aluminum Oxide, 8 in. PSAdhesive Sanding Disc - Qty:5

180 Grit Aluminum Oxide, 8 in. Pressure Sensitive Adhesive Sanding Disc - QTY:5

Production Shops Take Note - No cheap materials used here!

Our PSA (pressure sensitive adhesive) discs are made of full resin bonded Aluminum Oxide, heavy cloth backed material along with an adhesive that holds fast yet does not gum up your backing pad. Ideal for production situations that require discs to hold fast at high speeds and for repetitious, single-grit sanding of flat surfaces. Our competitors often use inferior materials or scrap in the manufacture of their discs. Klingspor use only top quality industrial goods. You get an extended grit range so that you can pick the perfect finish every time. Each pre-glued disc attaches in seconds; simply peel off the release paper backing, stick, and sand.

These discs are manufactured from premium Aluminum Oxide material for wood sanding operations where clogging or loading is a problem. Also great for sanding of soft metals such as brass or bronze.

Specifications:

• 180 Grit
• 8 in. Diameter
• Aluminum Oxide
• Anti-Static
• Resin to Resin bonded
• Heavy Y-weight polyester backing
• Open Coat
• Pack of 5
• Sticky back- PSA (pressure sensitive adhesive)

Works with the and not limited to the following units.

• Grizzly H8192
• PORTER-CABLE PCB420SA
• Rikon 50-114
• Shop Fox W1850
• BUCKTOOL BD4802
• BUCKTOOL BD4801
• Jet 577004

Aluminum Oxide (AO)

AO is formed by combining bauxite and other materials by firing them in an electric furnace. The resultant mass is then crushed, and the pieces sifted through successively finer screens to assign a grit size (CAMI grading). When crushed, the resulting pieces are naturally pyramidal in shape. Due to the shape and the strength of the materials used in its making, AO is a very durable grain. The grain is worn down during use, sanding finer the longer it's used.

AO is very tough and durable, as stated above, and is used on bare wood, most metals (especially the steels), leather and a wide variety of other materials. It is a great general purposes grain and probably the most, common grain seen today.

Cloth Backing

There are 3 basic weights of cloth backings: J, X and Y. J and X are cotton materials. The J has a slight degree of conformability to it and should be used where a small degree of conformability to the workpiece is needed in belts or sheets. The X is heavier weight cotton and is an all-purpose/general purpose backing used in a wide variety of belting applications including portable belts, intermediate belts and wide belts. Y backings are 100% polyester (or in some cases a 60/40 poly/cotton split) and are used for flat, heavy duty dimensioning or other high heat or rough applications. The J and X weight backings have flexed versions available that are referred to as J-Flex (JF) and X-Flex (XF). These would be suitable for applications where the X or J is not quite flexible enough. The most common uses for JF backings are as pump sleeves and for mold sanding belts. The XF backings are used mainly for slack of belt operations. The Y backings are not flexed but come in a lightweight poly (YX) and a heavy weight poly (Y or YY). Normally 24-50 or 60 grits will be the heavier poly backing and the 80-120 will be the lighter poly backing.

Semi Open / Open Coat

The terms semi-open and open coat mean that, to different degrees, the amount of abrasive grain on the backing of your belt, sheet or disc has been modified (lessened). Semi-open coat usually refers to a 30% reduction in the amount of grain on the backing while open coat usually means 50% has been withheld. Thinking about these statements logically, two things can be deduced from them:

  1.) semi-open and open coat products will cut less aggressively

  2.) semi-open and open coat products will finish coarser per grit than closed coat products.

Semi-open and Open coat products have less grain on the backing, which results in less cutting power per grit designation.

Semi-open and Open coat products have gaps in their grain coverage, so the finishes they provide will not be as even and will fall to the coarse end of the designated grit's finishing parameters.