Unmounted flap wheels

Unmounted Flap Wheel

Unmounted Flap WheelWith unmounted flap wheels, coated abrasive flaps are arranged radially around the core in a fan-like structure. The flexible flaps perfectly adapt to surface contours. The abrasive grain is embedded in the sturdy, flexible cloth backing material with a resinoid bond. In ISO 5429, unmounted flap wheels are designated as "flap wheels." For universal applications from coarse to fine grinding.Special featuresConforms to contours due to high flexibility.Consistently high stock removal rate throughout the entire service life as new, aggressive abrasive is constantly exposed.Can be used face-down very close to edges and in corners thanks to special clamping system.ApplicationsDeburringStep-by-step fine grindingLevelingStructuring (matt finishing, brush matting and satin finishing)Surface workWork on weld seamsMaterials that can be workedStainless steel (INOX)Steel materials with a hardness > 54 HRCSteels up to 370 HV (< 38 HRC)AluminumAnnealed cast ironBrassCast steelCopperGrey/nodular cast iron (GG/GJL, GGG/GJS)Hardened, heat-treated steels over 370 HV (38 HRC)Recommendations for useFlap wheel wear and the thermal load on the workpiece are reduced by decreasing the contact pressure and peripheral speed, and by adding grinding oil.Stock removal rate should be increased by using a coarser grit, not by increasing the contact pressure. This avoids unnecessary flap wheel wear and prevents the thermal load of the workpiece.Increasing the speed results in a slightly finer surface quality. An increase in contact pressure results in a slightly coarser surface. The softer the workpiece material, the coarser the resulting surface (when using the same grit size).For the best performance, use with a recommended peripheral speed of 3,000-6,000 SFPM. This provides an ideal compromise between stock removal rate, surface quality, thermal load on the workpiece and tool wear.Use the appropriate grinding oil for the material to significantly increase the service life and the abrasive performance of the discs.For the best results, use a power tool with 1,000–1,500 watts.SafetyUnmounted flap wheels should only be used with the appropriate clamping flanges.For safety reasons, the maximum permitted rotational speed indicated must never be exceeded.The contact pressure has to be reduced significantly when the optimum rotational speed is exceeded.The maximum permitted peripheral speed is 9,800 SFPM.Technical informationDia. External4 inWidth1 inDrive typeFlexible shaft driveGrit40Max. RPM9500Pack qty2