InterDynamics flap discs are ideal for grinding, finishing, and leveling surfaces. They also easily remove rust, paint residue, and weld seams from various types of steel, including stainless steel, structural steel, and (cast) iron.

The self-sharpening zirconia-alumina grains used in InterDynamics flap discs are highly heat-resistant and maintain their cutting performance even under demanding conditions. As a result, metalworking professionals benefit from flap discs that perform reliably even under extreme pressure.

Grain Size

The grain size of the abrasive surface directly influences the performance of the flap disc and the result. Choosing the correct grit size is therefore essential. InterDynamics offers flap discs in grit sizes 40, 60, 80, and 120.

• Heavy material removal: Coarse abrasive grains such as grit 40 are suitable for demanding applications, including intensive material removal from workpieces.
• Chamfering and edge finishing: Coarse abrasives (grit 40–60) are ideal for chamfering and breaking sharp edges.
• Grinding and blending welds: Grit 40–60 is also suitable for grinding and blending weld seams.
• Deburring: Grit 60 is ideal for removing burrs from metal surfaces.
• Rust removal and blending: Grit 60–80 is optimal for finer work such as rust removal and blending surfaces.
• Cleaning and finishing: Finer abrasives (grit 80–120) are suitable for delicate work such as cleaning and finishing.