On every snowplow, there will be general wear items that need to be replaced from time to time. One of those items, is the cutting edges on your snowplow. The lifecycle of a snowplow cutting edge varies depending on the amount of time the plow is used, the type and condition of the ground surface and the material grade of the cutting edge. In general, a cutting edge needs replacing before the plow frame is exposed or rubbing occurs on the moldboard.