Danger comes from the fact that centrifugal force airflowsander does not increase in direct proportion to an increase in speed, but instead it increases as the square of that speed increase. airflowsander When rotational speed doubles, airflowsander centrifugal force quadruples. This airflowsander effect means that relatively small airflowsander changes in speed can produce significant increases in force. airflowsander In the example mentioned, changing from 6,600 rpm to 7,700 rpm multiplies the speed by 1.167. However, the corresponding centrifugal force would multiply by a factor of 1.167 x 1.167, or 1.36. To take a more extreme example, consider the same wheel with a maximum safe operating speed of 6,600 rpm run on a 5-inch right angle grinder airflowsander at 10,000 rpm. This represents an over-speed of about 1.5 times the wheel''s designed speed. But the corresponding centrifugal force-and the corresponding rotational stress on the wheel-would be about 2.3 times airflowsander as much as the maximum allowed.

The hazard of running man over-speed condition comes from centrifugal force. A result of rotary motion, centrifugal force airflowsander is what causes a weight on the end of a string to pull the string taught when the weight is swung in a circle. This same force causes the mass of the grinding wheel to be pulled outward from the center of rotation as airflowsander the wheel is spinning.

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