» Flap Wheel
Flap Wheel With Shaft
Reference Charts
DO NOT USE ABRASIVE FLAP DISCS ON HIGH-SPEED PISTOL GRIP AIR SANDERS!
Why mounting abrasive flap discs on high-speed pistol grip air sanders is dangerous. factory can't approve of mounting abrasive flap discs onto high-speed pistol grip air sanders. There are three obvious reasons for not mounting abrasive flap discs on high-speed pistol grip air sanders.
1. Speed: High-speed pistol grip air sander speeds typically exceed the speed of abrasive flap discs. For example, 5" flap discs are usually rated for 13,000 rpm and high-speed pistol grip air sanders are typically rated for speeds of 14,000 to 22,000 rpm. In addition, many of these tools are ungoverned and if air pressure is not controlled, speeds can greatly exceed the tool's rated speed. Excessive speed can break the strongest abrasive flap disc. Never exceed the rated speed on the flap disc!
2. Mounting System: High-speed pistol grip air sanders are designed for sanding applications using coated abrasive paper discs mounted to back-up pads. Typically a high-speed pistol grip air sander has a concave/convex mounting system designed to grip/pinch coated wire cup brushes and back-up pads. This type of concave/convex mounting system applies uneven stress to the hard back of an abrasive flap disc which can cause the disc to break.
Reference Charts
| MATERIAL-SURFACE FEET PER MINUTER | |
| MATERIAL | SFPM |
| MIILD STEEL | 5000 |
| STAINLESS STEEL | 6500 |
| ALLOY STEEL | 5000 |
| TITANIUM | 3500 |
| HARD ALUMINIUM | 5500 |
| NON FERROUS | 5000 |
| FIBERGLASS | 5500 |
| RUBBER | 4500 |
| HARDWOOD | 4000 |
| SOFTWOOD | 3500 |
| Thermoplastic | 3000 |
RECOMMENDED GRITS
| MATERIAL/APPLICATION | GRIT |
| STEEL | |
| Blend out heavy machine marks or burrs | 50 or 60 |
| Blend out light machine marks or burrs | 120 or 180 |
| Apply heavy scratch pattern | 50 |
| Apply light scratch pattern | 80 or 120 |
| Remove scale, rust and pit marks | 40 or 50 |
| Prepare surface for painting | 60 or 80 |
| Turbojet blade polishing | 150 or 240 |
| Blending of stainless-No 4 | 80 or 120 |
| ALUMINUM & OTHER NON-FERROUS | |
| Blend out heavy machine marks or burrs | 60 or 80 |
| Blend out light machine marks or burrs | 120 or 180 |
| Apply heavy scratch pattern | 60 |
| Apply light scratch pattern | 120 |
| Blend surface imperfections | 60 or 100 |
| Flash and parting line removal | 50 or 60 |
| RUBBER FLASH REMOVAL | |
| Heavy | 50 |
| Light | 60 |
| PLASTICS, ACRYLICS | |
| Remove flash and machine marks | 120 |
| Fine blending and polishing | 240 & 320 |
| Fiberglass-blend surface imperfections | 50 or 60 |
| WOOD | |
| Edge breaking | 100 or 120 |
| Mold sanding | 120 |
Why mounting abrasive flap discs on high-speed pistol grip air sanders is dangerous. factory can't approve of mounting abrasive flap discs onto high-speed pistol grip air sanders. There are three obvious reasons for not mounting abrasive flap discs on high-speed pistol grip air sanders.
1. Speed: High-speed pistol grip air sander speeds typically exceed the speed of abrasive flap discs. For example, 5" flap discs are usually rated for 13,000 rpm and high-speed pistol grip air sanders are typically rated for speeds of 14,000 to 22,000 rpm. In addition, many of these tools are ungoverned and if air pressure is not controlled, speeds can greatly exceed the tool's rated speed. Excessive speed can break the strongest abrasive flap disc. Never exceed the rated speed on the flap disc!
2. Mounting System: High-speed pistol grip air sanders are designed for sanding applications using coated abrasive paper discs mounted to back-up pads. Typically a high-speed pistol grip air sander has a concave/convex mounting system designed to grip/pinch coated wire cup brushes and back-up pads. This type of concave/convex mounting system applies uneven stress to the hard back of an abrasive flap disc which can cause the disc to break.