This is the number of feet that can be entangled in the equipment during the average reaction time of .75 second. A lawnmower blade makes 52 rotations every second. By the time you can react, a single blade will have gone around 39 times. For example, equipment 9 feet in the air hits the ground in .75 second. This chart is based on estimated values.
Conditions vary that can increase or decrease the values shown in chart.
PTO shafts make either 540 or 1,000 revolutions a minute. At this speed, even slower units can pull in approximately 7 feet every second. Once entangled, a person has few choices. Stay clear of moving parts at all times. Wear close-fitting clothes that do not have loose sleeves or cuffs, and frayed edges.