Norton Industrial Applications Catalogue 2019 LR_115567

218 / Bonded Abrasives BONDED ABRASIVES Recommended GRIT SIZE SURFACE FINISH 46 60 80 100 120 150 180 220 42 1,10 32 0,80 26 0,70 21 0,50 16 0,40 14 0,35 11 0,25 8 0,20 7 0,17 6 0,14 5 0,12 4 0,10 3 0,08 2 0,05 MIN FORM RADIUS METIC (mm) 0,75 0,50 0,40 0,25 0,20 0,18 0,13 0,10 IMP INS ,030 ,020 ,015 ,010 ,008 ,007 ,005 ,004 SURFACE FINISH The achievable surface finish in any grinding operation is highly dependent upon the grit size of the grinding wheel. The following chart shows the range of surface finishes achievable when using grinding wheels of different grit sizes on conventional precision grinding applications, together with the minimum form radius that can be ground using each grit size. Other factors can affect the surface finish achieved. In particular: • Production grinding applications, with higher stock removal ranges, will give surface finishes at the coarser end of the range • Plunge grinding applications will often require the selection of a grit size one size finer than shown • Dressing techniques & the type of material can also affect the surface finish achieved ACHIEVING IMPROVED SURFACE FINISHES By changing the wheel dressing technique, it is possible to achieve finer surface finishes than those shown. As well as reducing the dresser infeed per revolution of the grinding wheel, it is also possible to reduce the infeed and traverse rate when grinding, thus reducing the stock removal rate. Obviously this approach will have limited application in production grinding but it can be very useful in tool room work. READING THE PRODUCT 1 Safety pictograms 2 Strong Norton branding 3 Product dimensions (mm) 4 Product specification 5 Maximum operating speed 6 Article number; for use when re-ordering 7 oSa certified The Organisation for Safety of Abrasives 8 European safety standard EN 12413 EN112413 MAX:2.230rpm 35m/s 3NQ46JVQN NQ 01_180X13X32 66253262031 2 4 3 6 5 7 8 1 BONDED ABRASIVES PRODUCT SELECTION