Cutting Discs & Grinding Wheels / 37 www.nortonabrasives.com METAL RING WITH VALIDITY DATE V = VALIDITY DATE (PRODUCTION QUARTER + 3 YEAR) V01 V04 V07 V10 1st quarter 2nd quarter 3rd quarter 4th quarter EXAMPLE: V04/2024 indicates production in the 2nd quarter of 2021 and usage before the 2nd quarter of 2024 Sparks should be directed away from the face and body, if possible towards the floor. Dust extraction equipment must be used whenever it is available. The instructions for use given by the abrasive manufacturer must be followed e.g. ‘Not to be used without a support’, or ‘Not to be used for wet grinding’. The workpiece must be firmly fixed before grinding starts. Check all abrasives visually before use and make certain that the product is suitable for the application. No modifications should be made to abrasive products after delivery. When using a portable grinder always switch it off and allow the spindle to stop completely before putting the tool down. OPERATING SPEEDS Norton products are designed and tested for certain applications and operating speeds. Choose a wheel suitable for the application material. Suitable materials are indicated on the wheel label. Before mounting the grinding or cutting disc on the machine, ensure that the operating speed of the machine does not exceed the maximum operating speed as it is marked on the product. GENERAL PRECAUTIONS Safety instructions provided by the machine manufacturers must be followed. All guards, covers and hoods must be in place on the machine during grinding, and should not be modified in any way. Abrasives should not be used near inflammable material. WHEEL DIAMETER (mm) SPEED CONVERSION FOLLOWING EN 12413 MAXIMUM OPERATING SPEED (RPM) for resinoid bonded cutting discs & grinding wheels in handheld and stationary operations 80 100 50/51 30600 38200 63/65 24300 30250 76 20150 25150 100/102 15300 19100 115 13300 16650 125 12250 15300 150/152 10200 12700 180 8500 10650 230 6650 8350 300/305 5100 6400 350/356 4400 5500 400/406 3850 4800 CUTTING DISCS & GRINDING WHEELS
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