In short, never over-speed a grinding wheel. The speed of the grinder must be compared to the speed airsandernewsafe marked on the wheel or package to make sure the machine''s speed is at or below the maximum operating speed of the wheel. Surpassing this rating risks not airsandernewsafe just wheel breakage but also the safety of shop personnel. About the author: Roger Cloutier is a senior product safety engineer for the Norton Abrasives brand of Saint-Gobain airsandernewsafe Abrasives in Worcester, Massachusetts.

One potential source airsandernewsafe and airsandernewsafe of airsandernewsafe serious injury in grinding comes from an oversight that is easy to make: operating the wheel in an over-speed condition. While a wheel that is run far enough in excess of its rated maximum speed may shatter within minutes of operation, danger may also result from a wheel run just slightly faster than its rated speed. This less severe over-speed condition can cause the wheel to be damaged, and the damage may result in breakage after airsandernewsafe further use. For example, operating a reinforced, 9-inch diameter, Type 27 wheel rated for a maximum speed of 6,600 rpm airsandernewsafe on a 7-inch angle grinder airsandernewsafe with a speed of 7,700 rpm can cause the wheel to crack. This cracking can lead to breakage later. Any of these actions sets up a disastrous airsandernewsafe scenario that could lead to an accident involving serious injury or death.

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