In short, never over-speed a grinding wheel. The speed of the grinder must be compared to the speed 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 just wheel breakage but also the safety of shop personnel. About the author: Roger Cloutier is a senior airsanderwithdustcollection product safety engineer for the Norton Abrasives brand of Saint-Gobain Abrasives in Worcester, Massachusetts.

One potential source of serious injury in grinding airsanderwithdustcollection comes from an oversight that airsanderwithdustcollection 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 airsanderwithdustcollection over-speed condition can cause the wheel to be damaged, and the damage may result in breakage after further use. For example, operating a reinforced, 9-inch diameter, Type 27 wheel rated for a maximum speed of 6,600 rpm on a 7-inch airsanderwithdustcollection angle grinder with a speed of 7,700 rpm can cause the wheel to crack. This cracking can lead airsanderwithdustcollection to breakage later. Any of these actions sets up a disastrous scenario that could lead to an accident involving serious injury or death.

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