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Over100 YearsAluminum OxideABRASIVESAluminum Oxide and Silicon Carbide, Zirconia, and CeramicAluminum Oxide and Silicon Carbide MixA Regular Aluminum Oxide. Used most frequentlyon snagging steel castings, bench andpedestal grinding and O.D. grinding of softannealed or medium hardness materials. Brownor blue-gray in color.TA Ceramic Coated Oxide. Ceramic coatingincreases durability of Regular A. Generally usedin cut-off. Resin only.81A Versatile premium grain suited to grind alltool steels. Fast, cool cutting action with minimaldressing. Use medium to heavy infeeds .001-.003 per pass for best results. Cream in color.49A Designed for high speed steel, D2 steel orsteels containing high levels of chromium. Uselight to medium infeed. .001 per pass (stockremoval). Pink in color.50A Used on the most heat sensitive materials.50A is the coolest cutting of the aluminum oxidefamily and is designed for light infeeds. .001 andless (stock removal). White in color.42A Blend of 50A and A. General purpose abrasivedesigned for a variety of work surfaces ineither the hard or soft state. Brown and white incolor or blue and white in color..48A Blend of 47A and 50A used as a performancespecification on surface, cylindrical andtool and cutter operations. Good at .002 - .005per pass (stock removal). Brown and white incolor or blue and white in color.43A Blend of 50A and A identical in applicationto 42A, however, more desirable on harder materials.Brown and white in color or blue andwhite in color.70A/CA General Purpose Mixture of 75C and A.Used to grind cast iron.71A Special friable blend for aluminum grinding.66A Multi-grain blend for throughfeed centerlessgrinding a variety of materials.Silicon Carbide75C/C Primarily used on gray iron or nonferrousmaterials, such as glass, rubber, stoneand cemented carbide. Black in color.80C Ideal for grinding of cemented carbide andcarbide cutting tools. Green in color.ZirconiaZ Modified zirconia used for snagging gray iron,cast steel, malleable and ductile iron. Generallyrun at 12,500 SFPM.ZGS Modified friable zirconia designed for sawgumming applications.Ceramic Aluminum Oxide9D-9H A blend of ceramic abrasive with 50A.9D is well suited for most applications at 50+ Rcrange including surface, cylindrical, internal, geargrinding, and tool sharpening. Ideal at .003 to.010 per pass downfeeds without burn andminimal dress.3A-6A A special blend of ceramic abrasive.Used in knife grinding and saw sharpening applications.46A Blend of 49A and Regular A. Similar to 42Ain application. Brown and pink in color or blueand pink in color.53A Used for form holding and heavy removalrates. Ruby in color.56A Heavy stock removal. For heat sensitivematerials. Light pink in color.Toll free 1-877-994-7463 • Fax 800-659-6654 • www.pacificgrindingwheel.com 25
GRIT SIZEOver100 Years■ Use Coarse Grit• Rapid stock removal• Large areas of contact• When finish is not important• Soft, ductile materials■Use Fine Grit• When form holding is needed• Small areas of contact• Fine finishes• Hard, brittle materialsGrit Size 46 54 60 80 100 120 150 220Finish (RMS) Over 32 20-32 15-20 12-18 10-15 8-12 6-10 5-6Radius Over .020 .017-.020 .016-.020 .010- .020 .008-.020 .005-.008 .004 -.006 .003-.005Horizontal SpindleSurface GrindingDry Cut-offWet Cut-off26Toll free 1-877-994-7463 • Fax 800-659-6654 • www.pacificgrindingwheel.com
Page 2 and 3: Over100 YearsIndustrialCatalogPRODU
Page 4 and 5: Over100 YearsGRINDING WHEELS4” to
Page 6 and 7: Over100 YearsGRINDING WHEELS6” Di
Page 12 and 13: Over100 YearsGRINDING WHEELS12” D
Page 14 and 15: Over100 YearsGRINDING WHEELS12” D
Page 16 and 17: Over100 YearsGRINDING WHEELS14” t
Page 18 and 19: Over100 YearsGRINDING WHEELS24” t
Page 20 and 21: SEGMENTSOver100 YearsProductProduct
Page 22 and 23: Over100 YearsProductDimensions Spec
Page 24 and 25: Over100 YearsDIAMONDDRESSERSCONE PO
Page 28 and 29: BOND SYSTEMSOver100 YearsVitrified
Page 30 and 31: STANDARD WHEEL SHAPESOver100 YearsD
Page 32: ROCKWELL HARDNESSOver100 YearsBrinn
Page 35 and 36: Notes34Toll free 1-877-994-7463 •
Page 37 and 38: Notes36Toll free 1-877-994-7463 •

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