Coated Abrasives are similar to grinding wheels but are two dimensional in structure as in sand paper which has a single layer of abrasive. The main component are shown as

below. unlike a grinding wheel which has a three dimensional layer of abrasive. The operation of material removal with coated abrasives is called sanding instead of grinding with bonded abrasives.

The mechanics of material removal in sanding with coated abrasives is similar to bonded abrasives.

Coated abrasives products have mainly 3 components, a backing which is flexible, a bond which is strong and flexible, and a single layer of abrasive. The main components are shown below. 

Abrasive Size Coat Make Coat Backing

The make coat is the first coat of adhesive which is applied on the backing and this is followed by the abrasive which is placed with a desired orientation on this make coat. After curing this coat in the space between the abrasives a size coat of adhesive is applied which helps the grain to get firmly anchored. Coated abrasives are made with grains which are longer and tougher than bonded abrasives. This ensures that the abrasive particles penetrate deeper with lesser forces and withstand very high pressures on the grain.

These products use Vulcanised fibres as backing materials and are used mounted against a backup pad made of rubber or Phenolic plastics. They can be used for very fast material removal rates without generating heat. They are made fully or partial coated with grain in round or Rossette shapes.

AVOS Discs are new discs made by Norton which enables operator using discs to see the job he is grinding. This ensures no over grinding.

These discs are made with specially shaped holes in octagonal shape.