Klingspor main catalogue Abrasive, cutting-off & grinding discs Page 409
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Kronenflex® cutting-off wheels and grinding discs Technical Glossary What the type designation reveals about the design of cutting-off wheels and grinding discs The type designation given on a cutting-off wheel or grinding disc divulges more than just the name of the product. It provides important information on the performance class and on the composition of the tool. The first letter indicates which abrasive grit is used. If this letter is followed by a three digit number, the first digit signifies the performance class (the performance class is also included below the name of the product). The last two digits point to the size of the grit that was used. The letters at the end of the type designation mark the hardness grade of a cutting-off wheel or grinding disc. Grit type Product group Grit size according to FEPA standard Hardness A Aluminium oxide 3 16 M C Silicon carbide 6 24 N Z Zirconia alumina 9 30 R 36 S 46 T Product group soft hard 60 80 Explained by example of the Z 960 TX cutting-off wheel Z Zirconia alumina Product group Grit size according to FEPA standard 9 The safe use of Klingspor abrasives Klingspor Kronenflex® cutting-off wheels and grinding discs are manufactured in accordance with the oSa and EN 12413 standards, this ensures the highest level of user safety. 60 Hardness TX Product group hard Wear safety goggles or glasses to protect the eyes Wear safety gloves to protect hands Wear dust mask Observe safety instructions Use ear protectors Do not use for wet grinding Not permitted for grinding Do not use if damaged 409 Grinding knowledge Grit type
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